Sudarshan Rajagopal
Associate Professor of Medicine
Current Research Interests
The research of the Rajagopal lab focuses on understanding and untapping the signaling potential of G protein-coupled receptors (GPCRs) to regulate inflammation in vascular disease. GPCRs are the most common transmembrane receptors in the human genome (over 800 members) and are some of the most successful targets for drug therapies. While it has been known for some time that these receptors signal through multiple downstream effectors (such as heterotrimeric G proteins and multifunctional beta arrestin adapter proteins), over the past decade it has been better appreciated that these receptors are capable of signaling with different efficacies to these effectors, a phenomenon referred to as "biased agonism". Ligands can be biased, by activating different pathways from one another, and receptors can be biased, by signaling to a limited number of pathways that are normally available to them. Moreover, this phenomenon also appears to be common to other transmembrane and nuclear receptors. While a growing number of biased agonists acting at multiple receptors have been identified, there is still little known regarding the mechanisms underlying biased signaling and its physiologic impact.
Much of our research focuses on the chemokine system, which consists of approximately twenty receptors and fifty ligands that display considerable promiscuity with each other in the regulation of immune cell function in inflammatory diseases. Research from our group and others have shown that many of these ligands act as biased agonists when signaling through the same receptor. We use models of inflammation such as contact hypersensitivity and pulmonary arterial hypertension (PAH). PAH is a disease of the pulmonary arterioles that results in right heart failure and most of its treatments target signaling by GPCRs. We use multiple approaches to probe these signaling mechanisms, including in-house pharmacological assays, advanced phosphoproteomics and single cell RNA sequencing.
Current Appointments & Affiliations
- Associate Professor of Medicine, Medicine, Cardiology, Medicine 2023
- Associate Professor of Cell Biology, Cell Biology, Basic Science Departments 2022
- Associate Professor of Biochemistry, Biochemistry, Basic Science Departments 2023
Contact Information
- Box 102147, DUMC, Durham, NC 27710
- Duke University Medical Center, Box 3126, Durham, NC 27710
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sudarshan.rajagopal@duke.edu
(919) 684-6237
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Rajagopal Lab Website
- Background
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Education, Training, & Certifications
- Clinical Fellowship, Cardiovascular Disease, Duke University School of Medicine 2011 - 2013
- Research Fellowship, Duke University School of Medicine 2008 - 2011
- Resident, Internal Medicine, Duke University School of Medicine 2006 - 2008
- M.D., The University of Chicago 2006
- Ph.D., The University of Chicago 2004
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Medical Licensure
- 134545. North Carolina. 2009
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Previous Appointments & Affiliations
- Assistant Professor in Biochemistry, Biochemistry, Basic Science Departments 2017 - 2023
- Associate Professor of Medicine, Medicine, Cardiology, Medicine 2019 - 2023
- Assistant Professor of Medicine, Medicine, Cardiology, Medicine 2017 - 2019
- Assistant Professor of Medicine, Medicine, Cardiology, Medicine 2013 - 2017
- Assistant Research Professor in Biochemistry, Biochemistry, Basic Science Departments 2015 - 2017
- Research
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Selected Grants
- EPIPHANY Effects of Combination Medical Therapy Followed by Balloon Pulmonary Angioplasty on Right Ventricular-PA Coupling and Hemodynamics in Chronic Thromboembolic Pulmonary Hypertension (The EPIPHANY Study) awarded by Actelion Pharmaceutical US, Inc 2023 - 2028
- UT Solar Defining a Noninvasive Signature for Pulmonary Vascular Remodeling in Group 3 PH awarded by United Therapeutics Corporation 2022 - 2027
- Medical Scientist Training Program awarded by National Institutes of Health 2022 - 2027
- AC-055-315 A Phase 3, Prospective, Multicenter, Double-blind, Double-Dummy, Randomized, Active-controlled, Parallel-group, Group-sequential, Adaptive, Event-Driven Study to compare Efficacy, Safety, and Tollerability of Macitentan 75mg Versus Maciten awarded by Janssen Research & Development, LLC 2021 - 2027
- Duke Program of Training in Pulmonary ReSearch to Promote, Engage and Retain Academic Researchers (PROSPER) awarded by National Institutes of Health 2022 - 2026
- Novel Mechanisms and Therapeutic Targets for Pulmonary Hypertension in End-Stage Renal Disease (K23) awarded by National Institutes of Health 2021 - 2026
- Biasing CXCR3 Signaling to Modulate the Inflammatory Response awarded by National Institutes of Health 2022 - 2026
- Novel mitochondrial protective properties of annexin A1 awarded by National Institutes of Health 2021 - 2026
- Cell and Molecular Biology Training Program awarded by National Institutes of Health 2021 - 2026
- Pulmonary Structure and Function with Hyperpolarized 129Xe Magnetic Resonance Imaging in Patients with Pulmonary Hypertension awarded by American Heart Association 2023 - 2026
- Xenon MRI in Pulmonary Hypertension awarded by National Institutes of Health 2021 - 2025
- Elevate 2 RVT-1201-2002 awarded by Altavant Sciences, Inc. 2021 - 2024
- National Research Service Award (F31) awarded by National Institutes of Health 2021 - 2024
- Functional divergence of ss-arrestin isoforms drives distinct AT1R signaling in hypertension awarded by American Heart Association 2023
- Pluridemensional Signaling of Vasoactive G Protein-Coupled Receptors awarded by American Heart Association 2023
- Restrospective Study of Outcomes of Patients with WHO Groups 1 and 3 Pulmonary Hypertension Treated with High-Dose Inhaled Treprostinil awarded by United Therapeutics Corporation 2018 - 2023
- US - Base, observational, drug registry of Opsumit (macitentan) new users in clinical practice (OPUS Registry) awarded by Actelion Pharmaceuticals Ltd. 2015 - 2023
- TRACE: Selexipag ACT-293987, AC-065A404 A multicenter double-blind placebo controlled Phase 4 study in patients with pulmonary arterial hypertension to assess the effect of selexipag awarded by Actelion Pharmaceutical US, Inc 2018 - 2023
- Analytics 4 Life PHDEV Secondary awarded by Analytics 4 Life 2020 - 2023
- Right Ventricular Metabolic Dysregulation after Surgery for Heart Failure awarded by International Anesthesia Research Society 2021 - 2023
- A Multicenter, Randomized, Double-Blinded, Placebo-Controlled Trial to Evaluate the Safety and Efficacy of Inhaled Treprostinil in Subjects with Pulmonary Hypertension due to Parenchymal Lung Disease awarded by United Therapeutics Corporation 2017 - 2023
- An Open-Label Extension study of Inhaled Treprostinil in Subjects with Pulmonary Hypertension due to Parenchymal Lung Disease awarded by United Therapeutics Corporation 2017 - 2023
- Assessing Response to Inhaled Prostacyclin with Hyperpolarized 129Xe MRI awarded by United Therapeutics Corporation 2017 - 2022
- R01: CXCL10/CXCR3 regulation of ozone-induced epithelial permeability awarded by National Institutes of Health 2017 - 2022
- Single Cell Profiling and Disease Modeling of CTEPH awarded by American Heart Association 2019 - 2022
- Medical Scientist Training Program awarded by National Institutes of Health 1997 - 2022
- CXCR3 in Atherosclerosis awarded by American Heart Association 2020 - 2021
- RVT-1201 A Phase 2a, Double-Blind Placebo-Controlled Multicenter Study to Assess the Safety tolerability pharmacokinetics and pharmacodynamic effects of RVT-1201 in Patients with PAH awarded by Altavant Sciences, Inc. 2019 - 2021
- A Pilot Study of Transitioning from Parenteral Prostacyclins to Selexipag awarded by Actelion Pharmaceutical US, Inc 2017 - 2021
- TDE-HF-302 Open-label extension study of oral Treprostinil in subjects with Pulmonary Hypertension associated wiht Heart Failure with Preserved Ejection Fraction- A long-term follow-up to TDE-HF-301 awarded by United Therapeutics Corporation 2017 - 2020
- Evaluate the Safety and Efficacy of Oral Treprostinil in Subjects with Pulmonary Hypertension in Heart FAilure with Preserved Ejection Fraction (HFpEF) awarded by United Therapeutics Corporation 2017 - 2020
- Non-invasive Diagnosis of Pulmonary Vascular Disease Using Inhaled 129Xe MRI awarded by National Institutes of Health 2016 - 2020
- Dissecting Receptor Signaling Pathways in Pulmonary Hypertension awarded by Burroughs Wellcome Fund 2014 - 2020
- RADPH - Building a Repository of Phase Signals for Algorithm Development from Subjects with Pulmonary Hypertension. awarded by Analytics 4 Life 2019 - 2020
- Probing the Mechanism of VEGFR3 regulation by Beta-rrwatins in Vascular Disease awarded by National Institutes of Health 2017 - 2019
- RV STRAIN awarded by Gilead Sciences, Inc. 2015 - 2019
- A phase 2, randomized, double-blind, placebo-controlled study of ubenimex in patients with pulmonary arterial hypertension (WHO Group 1) (LIBERTY) awarded by Eiger BioPharmaceuticals, Inc. 2016 - 2018
- Opsummit Historical Users cohort study (OrPHeUS) awarded by Actelion Pharmaceuticals Ltd. 2018
- A Phase 2, Open-Label, Extension Study to Evaluate the Long- Term Safety and Efficacy of Ubenimex in Patients with Pulmonary Arterial Hypertension (WHO Group 1) awarded by Eiger BioPharmaceuticals, Inc. 2016 - 2018
- Noncanonical Receptor Signaling in Pulmonary Arterial Hypertension awarded by National Institutes of Health 2013 - 2018
- CardioMEMS awarded by Pacesetter, Inc. 2016 - 2018
- Investigation of the Effect of Expressing BMPr2, BMP10 or BMP9 in the monocrotaline rat model (MCT) and sugen-hypoxia model (SuHX) for PAH following the systemic delivery of genes using an AAV vector. awarded by StrideBio LLC 2017 - 2018
- Targeting the Right Ventricle with Biased Agonists in Pulmonary Arterial Hypertension awarded by Gilead Sciences, Inc. 2014 - 2016
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External Relationships
- APIE Therapeutics
- Aerami Therapeutics
- Altavant
- Gossamer Bio
- Insmed
- Janssen Pharmaceuticals
- Liquidia Technologies, Inc
- Merck
- Polarean
- TotalCME
- United Therapeutics Corp.
- Visterra
- Publications & Artistic Works
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Selected Publications
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Academic Articles
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Viswanathan, Gayathri, and Sudarshan Rajagopal. “De novo purine synthesis: a new target in pulmonary arterial hypertension?” Eur Heart J 44, no. 14 (April 7, 2023): 1280–82. https://doi.org/10.1093/eurheartj/ehad078.Full Text Link to Item
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Richter, Manuel J., Federico Fortuni, Fawaz Alenezi, Michele D’Alto, Roberto Badagliacca, Nathan W. Brunner, Arie P. van Dijk, et al. “Imaging the right atrium in pulmonary hypertension: A systematic review and meta-analysis.” J Heart Lung Transplant 42, no. 4 (April 2023): 433–46. https://doi.org/10.1016/j.healun.2022.11.007.Full Text Link to Item
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Nathan, Steven D., Chunqin Deng, Christopher S. King, Hilary M. DuBrock, Jean Elwing, Sudarshan Rajagopal, Franz Rischard, et al. “Inhaled Treprostinil Dosage in Pulmonary Hypertension Associated With Interstitial Lung Disease and Its Effects on Clinical Outcomes.” Chest 163, no. 2 (February 2023): 398–406. https://doi.org/10.1016/j.chest.2022.09.007.Full Text Link to Item
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Eiger, Dylan Scott, Noelia Boldizsar, Christopher Cole Honeycutt, Julia Gardner, Stephen Kirchner, Chloe Hicks, Issac Choi, et al. “Location bias contributes to functionally selective responses of biased CXCR3 agonists.” Nat Commun 13, no. 1 (October 4, 2022): 5846. https://doi.org/10.1038/s41467-022-33569-2.Full Text Link to Item
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Park, Saejeong, Zhiyuan Ma, Georgia Zarkada, Irinna Papangeli, Sarin Paluri, Nour Nazo, Felix Rivera-Molina, Derek Toomre, Sudarshan Rajagopal, and Hyung J. Chun. “Endothelial β-arrestins regulate mechanotransduction by the type II bone morphogenetic protein receptor in primary cilia.” Pulmonary Circulation 12, no. 4 (October 2022): e12167. https://doi.org/10.1002/pul2.12167.Full Text
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Kolb, Peter, Terry Kenakin, Stephen P. H. Alexander, Marcel Bermudez, Laura M. Bohn, Christian S. Breinholt, Michel Bouvier, et al. “Community guidelines for GPCR ligand bias: IUPHAR review 32.” Br J Pharmacol 179, no. 14 (July 2022): 3651–74. https://doi.org/10.1111/bph.15811.Full Text Link to Item
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Alenezi, F., R. J. Tedford, and S. Rajagopal. “Hemodynamics of the right ventricle and the pulmonary circulation.” Applications in Engineering Science 10 (June 1, 2022). https://doi.org/10.1016/j.apples.2022.100102.Full Text
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Eiger, Dylan S., Jeffrey Smith, Tujin Shi, Tomasz M. Stepniewski, Christopher Honeycutt, Noelia Boldizsar, Julia Gardner, et al. “Phosphorylation barcode ensembles encoded by biased CXCR3 agonists direct non-redundant chemokine signaling.” Faseb J 36 Suppl 1 (May 2022). https://doi.org/10.1096/fasebj.2022.36.S1.0R486.Full Text Link to Item
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Eiger, Dylan Scott, Uyen Pham, Julia Gardner, Chloe Hicks, and Sudarshan Rajagopal. “GPCR systems pharmacology: a different perspective on the development of biased therapeutics.” Am J Physiol Cell Physiol 322, no. 5 (May 1, 2022): C887–95. https://doi.org/10.1152/ajpcell.00449.2021.Full Text Link to Item
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Gardner, Julia, Dylan Eiger, Noelia Boldizsar, Christopher C. Honeycutt, Stephen Kirchner, Chloe Hicks, Issac Choi, et al. “Location Bias Contributes to Functionally Selective Responses of Biased CXCR3 Agonists to Regulate Inflammation.” Faseb J 36 Suppl 1 (May 2022). https://doi.org/10.1096/fasebj.2022.36.S1.0R865.Full Text Link to Item
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Hicks, C. N., D. Eiger, J. Gardner, N. Boldizsar, C. Honeycutt, I. Choi, and S. Rajagopal. “Location Bias of G Protein-Coupled Receptor Kinases Promotes Biased Signaling at CXCR3.” Faseb Journal : Official Publication of the Federation of American Societies for Experimental Biology 36 (May 1, 2022). https://doi.org/10.1096/fasebj.2022.36.S1.R2182.Full Text
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Kohlmann, T., C. Lee, and S. Rajagopal. “Determining the Requirements for Gαi:β-arrestin Complex Formation at G Protein-Coupled Receptors.” Faseb Journal : Official Publication of the Federation of American Societies for Experimental Biology 36 (May 1, 2022). https://doi.org/10.1096/fasebj.2022.36.S1.R5812.Full Text
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Lee, C., T. Kohlmann, X. Xiong, and S. Rajagopal. “Regulation of Endothelial Cell function by Integration of Gαi and β-arrestin signaling at Atypical Chemokine Receptor 3.” Faseb Journal : Official Publication of the Federation of American Societies for Experimental Biology 36 (May 1, 2022). https://doi.org/10.1096/fasebj.2022.36.S1.R6324.Full Text
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Pham, U., A. Chundi, and S. Rajagopal. “Distinct Spatial Conformations and Trafficking Patterns of β-arrestin Isoforms in AT1R Signaling.” Faseb Journal : Official Publication of the Federation of American Societies for Experimental Biology 36 (May 1, 2022). https://doi.org/10.1096/fasebj.2022.36.S1.L7742.Full Text
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Alenezi, Fawaz, Taylor A. Covington, Monica Mukherjee, Stephen C. Mathai, Paul B. Yu, and Sudarshan Rajagopal. “Novel Approaches to Imaging the Pulmonary Vasculature and Right Heart.” Circ Res 130, no. 9 (April 29, 2022): 1445–65. https://doi.org/10.1161/CIRCRESAHA.121.319990.Full Text Link to Item
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Zheng, Kevin, Jeffrey S. Smith, Dylan S. Eiger, Anmol Warman, Issac Choi, Christopher C. Honeycutt, Noelia Boldizsar, et al. “Biased agonists of the chemokine receptor CXCR3 differentially signal through Gαi:β-arrestin complexes.” Sci Signal 15, no. 726 (March 22, 2022): eabg5203. https://doi.org/10.1126/scisignal.abg5203.Full Text Open Access Copy Link to Item
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Rajagopal, Sudarshan, and Yen-Rei A. Yu. “The Pathobiology of Pulmonary Arterial Hypertension.” Cardiol Clin 40, no. 1 (February 2022): 1–12. https://doi.org/10.1016/j.ccl.2021.08.001.Full Text Link to Item
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Rajagopal, Sudarshan. “Visualizing Pulmonary Vascular Disease With CT Scanning.” Chest 160, no. 6 (December 2021): 1998–99. https://doi.org/10.1016/j.chest.2021.08.009.Full Text Link to Item
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Edmonston, Daniel L., Roland Matsouaka, Svati H. Shah, Sudarshan Rajagopal, and Myles Wolf. “Noninvasive Risk Score to Screen for Pulmonary Hypertension With Elevated Pulmonary Vascular Resistance in Diseases of Chronic Volume Overload.” Am J Cardiol 159 (November 15, 2021): 113–20. https://doi.org/10.1016/j.amjcard.2021.08.016.Full Text Link to Item
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Ma, Zhiyuan, Gayathri Viswanathan, Mason Sellig, Chanpreet Jassal, Issac Choi, Aditi Garikipati, Xinyu Xiong, Nour Nazo, and Sudarshan Rajagopal. “β-Arrestin-Mediated Angiotensin II Type 1 Receptor Activation Promotes Pulmonary Vascular Remodeling in Pulmonary Hypertension.” Jacc Basic Transl Sci 6, no. 11 (November 2021): 854–69. https://doi.org/10.1016/j.jacbts.2021.09.006.Full Text Link to Item
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Nathan, Steven D., Aaron Waxman, Sudarshan Rajagopal, Amy Case, Shilpa Johri, Hilary DuBrock, David J. De La Zerda, et al. “Inhaled treprostinil and forced vital capacity in patients with interstitial lung disease and associated pulmonary hypertension: a post-hoc analysis of the INCREASE study.” Lancet Respir Med 9, no. 11 (November 2021): 1266–74. https://doi.org/10.1016/S2213-2600(21)00165-X.Full Text Link to Item
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Alba, George A., Deepak Atri, Sriranjani Darbha, Inderjit Singh, Victor F. Tapson, Michael I. Lewis, Hyung J. Chun, Yen-Rei Yu, Bradley A. Maron, and Sudarshan Rajagopal. “Chronic Thromboembolic Pulmonary Hypertension: the Bench.” Curr Cardiol Rep 23, no. 10 (August 19, 2021): 141. https://doi.org/10.1007/s11886-021-01572-6.Full Text Link to Item
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Matusov, Yuri, Inderjit Singh, Yen-Rei Yu, Hyung J. Chun, Bradley A. Maron, Victor F. Tapson, Michael I. Lewis, and Sudarshan Rajagopal. “Chronic Thromboembolic Pulmonary Hypertension: the Bedside.” Curr Cardiol Rep 23, no. 10 (August 19, 2021): 147. https://doi.org/10.1007/s11886-021-01573-5.Full Text Link to Item
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Colebank, Mitchel J., M Umar Qureshi, Sudarshan Rajagopal, Richard A. Krasuski, and Mette S. Olufsen. “A multiscale model of vascular function in chronic thromboembolic pulmonary hypertension.” American Journal of Physiology. Heart and Circulatory Physiology 321, no. 2 (August 2021): H318–38. https://doi.org/10.1152/ajpheart.00086.2021.Full Text
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Xiong, Xinyu, Nour Nazo, Ritika Revoori, Sudarshan Rajagopal, and Matthew A. Sparks. “G protein- and β-arrestin Signaling Profiles of Endothelin Derivatives at the Type A Endothelin Receptor.” Kidney360 2, no. 7 (July 29, 2021): 1124–31. https://doi.org/10.34067/KID.0005462020.Full Text Link to Item
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Alba, George A., Andriy O. Samokhin, Rui-Sheng Wang, Ying-Yi Zhang, Bradley M. Wertheim, Elena Arons, Edward A. Greenfield, et al. “NEDD9 Is a Novel and Modifiable Mediator of Platelet-Endothelial Adhesion in the Pulmonary Circulation.” Am J Respir Crit Care Med 203, no. 12 (June 15, 2021): 1533–45. https://doi.org/10.1164/rccm.202003-0719OC.Full Text Link to Item
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Alenezi, Fawaz, and Sudarshan Rajagopal. “The right atrium, more than a storehouse.” Int J Cardiol 331 (May 15, 2021): 329–30. https://doi.org/10.1016/j.ijcard.2021.01.069.Full Text Link to Item
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Wang, Ziyi, Leith Rankine, Elianna A. Bier, David Mummy, Junlan Lu, Alex Church, Robert M. Tighe, et al. “Using hyperpolarized 129Xe gas-exchange MRI to model the regional airspace, membrane, and capillary contributions to diffusing capacity.” J Appl Physiol (1985) 130, no. 5 (May 1, 2021): 1398–1409. https://doi.org/10.1152/japplphysiol.00702.2020.Full Text Link to Item
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Smith, Jeffrey S., Thomas F. Pack, Asuka Inoue, Claudia Lee, Kevin Zheng, Issac Choi, Dylan S. Eiger, et al. “Noncanonical scaffolding of Gαi and β-arrestin by G protein-coupled receptors.” Science 371, no. 6534 (March 12, 2021). https://doi.org/10.1126/science.aay1833.Full Text Link to Item
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Eiger, Dylan Scott, Noelia Boldizsar, Christopher Cole Honeycutt, Julia Gardner, and Sudarshan Rajagopal. “Biased agonism at chemokine receptors.” Cell Signal 78 (February 2021): 109862. https://doi.org/10.1016/j.cellsig.2020.109862.Full Text Open Access Copy Link to Item
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Tsai, Chia-Feng, Jeffrey S. Smith, Dylan S. Eiger, Kendall Martin, Tao Liu, Richard D. Smith, Tujin Shi, Sudarshan Rajagopal, and Jon M. Jacobs. “Mass Spectrometry-Based Proteomics for Analysis of Hydrophilic Phosphopeptides.” Methods Mol Biol 2259 (2021): 247–57. https://doi.org/10.1007/978-1-0716-1178-4_16.Full Text Link to Item
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Ma, Zhiyuan, Gayathri Viswanathan, Mason Sellig, Chanpreet Jassal, Issac Choi, Xinyu Xiong, Nour Nazo, and Sudarshan Rajagopal. “β-arrestin-mediated Angiotensin II type 1 Receptor Activation Promotes Pulmonary Vascular Remodeling in Pulmonary Hypertension,” 2021. https://doi.org/10.1101/2021.03.23.436676.Full Text
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Mamazhakypov, Argen, Gayathri Viswanathan, Allan Lawrie, Ralph Theo Schermuly, and Sudarshan Rajagopal. “The role of chemokines and chemokine receptors in pulmonary arterial hypertension.” Br J Pharmacol 178, no. 1 (January 2021): 72–89. https://doi.org/10.1111/bph.14826.Full Text Open Access Copy Link to Item
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Suwanpradid, Jutamas, Min Jin Lee, Peter Hoang, Jeffery Kwock, Lauren P. Floyd, Jeffrey S. Smith, Zhinan Yin, et al. “IL-27 Derived From Macrophages Facilitates IL-15 Production and T Cell Maintenance Following Allergic Hypersensitivity Responses.” Front Immunol 12 (2021): 713304. https://doi.org/10.3389/fimmu.2021.713304.Full Text Link to Item
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Lee, Claudia, Gayathri Viswanathan, Issac Choi, Chanpreet Jassal, Taylor Kohlmann, and Sudarshan Rajagopal. “Beta-Arrestins and Receptor Signaling in the Vascular Endothelium.” Biomolecules 11, no. 1 (December 23, 2020). https://doi.org/10.3390/biom11010009.Full Text Open Access Copy Link to Item
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Edmonston, Daniel L., Sudarshan Rajagopal, and Myles Wolf. “Echocardiography to Screen for Pulmonary Hypertension in CKD.” Kidney Int Rep 5, no. 12 (December 2020): 2275–83. https://doi.org/10.1016/j.ekir.2020.09.033.Full Text Open Access Copy Link to Item
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Snyder, Joshua C., and Sudarshan Rajagopal. “Isoforms of GPCR proteins combine for diverse signalling.” Nature 587, no. 7835 (November 2020): 553–54. https://doi.org/10.1038/d41586-020-03001-0.Full Text Link to Item
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Edmonston, Daniel L., Kishan S. Parikh, Sudarshan Rajagopal, Linda K. Shaw, Dennis Abraham, Alexander Grabner, Matthew A. Sparks, and Myles Wolf. “Pulmonary Hypertension Subtypes and Mortality in CKD.” Am J Kidney Dis 75, no. 5 (May 2020): 713–24. https://doi.org/10.1053/j.ajkd.2019.08.027.Full Text Open Access Copy Link to Item
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Virgincar, Rohan S., John C. Nouls, Ziyi Wang, Simone Degan, Yi Qi, Xinyu Xiong, Sudarshan Rajagopal, and Bastiaan Driehuys. “Quantitative 129Xe MRI detects early impairment of gas-exchange in a rat model of pulmonary hypertension.” Sci Rep 10, no. 1 (April 30, 2020): 7385. https://doi.org/10.1038/s41598-020-64361-1.Full Text Link to Item
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Parikh, Kishan S., Sean Doerfler, Nicholas Shelburne, Karla Kennedy, Jordan Whitson, Talal Dahhan, Terry Fortin, and Sudarshan Rajagopal. “Experience in Transitioning From Parenteral Prostacyclins to Selexipag in Pulmonary Arterial Hypertension.” J Cardiovasc Pharmacol 75, no. 4 (April 2020): 299–304. https://doi.org/10.1097/FJC.0000000000000800.Full Text Open Access Copy Link to Item
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Yu, Yen-Rei A., Yuryi Malakhau, Chen-Hsin A. Yu, Stefan-Laural J. Phelan, R Ian Cumming, Matthew J. Kan, Lan Mao, Sudarshan Rajagopal, Claude A. Piantadosi, and Michael D. Gunn. “Nonclassical Monocytes Sense Hypoxia, Regulate Pulmonary Vascular Remodeling, and Promote Pulmonary Hypertension.” J Immunol 204, no. 6 (March 15, 2020): 1474–85. https://doi.org/10.4049/jimmunol.1900239.Full Text Link to Item
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Narayanan, Sanju, Vineetha Vasukuttan, Sudarshan Rajagopal, Rangan Maitra, and Scott P. Runyon. “Identification of potent pyrazole based APELIN receptor (APJ) agonists.” Bioorg Med Chem 28, no. 4 (February 15, 2020): 115237. https://doi.org/10.1016/j.bmc.2019.115237.Full Text Open Access Copy Link to Item
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Alenezi, Fawaz, Sudarshan Rajagopal, and Shelby Kutty. “Assessing right atrial function in pulmonary hypertension: window to the soul of the right heart?” Am J Physiol Heart Circ Physiol 318, no. 1 (January 1, 2020): H154–55. https://doi.org/10.1152/ajpheart.00739.2019.Full Text Open Access Copy Link to Item
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Zheng, Kevin, Jeffrey Smith, Anmol Warman, Issac Choi, Jaimee Gundry, Thomas Pack, Asuka Inoue, Marc Caron, and Sudarshan Rajagopal. “Biased agonists of the chemokine receptor CXCR3 differentially drive formation of Gαi:β-arrestin complexes,” 2020. https://doi.org/10.1101/2020.06.11.146605.Full Text
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Benza, Raymond L., Mark Doyle, David Lasorda, Kishan S. Parikh, Priscilla Correa-Jaque, Nima Badie, Greg Ginn, et al. “Monitoring Pulmonary Arterial Hypertension Using an Implantable Hemodynamic Sensor.” Chest 156, no. 6 (December 2019): 1176–86. https://doi.org/10.1016/j.chest.2019.06.010.Full Text Open Access Copy Link to Item
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Wang, Ziyi, Elianna A. Bier, Aparna Swaminathan, Kishan Parikh, John Nouls, Mu He, Joseph G. Mammarappallil, Sheng Luo, Bastiaan Driehuys, and Sudarshan Rajagopal. “Diverse cardiopulmonary diseases are associated with distinct xenon magnetic resonance imaging signatures.” Eur Respir J 54, no. 6 (December 2019). https://doi.org/10.1183/13993003.00831-2019.Full Text Open Access Copy Link to Item
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Shelburne, Nicholas J., Kishan S. Parikh, Karen Chiswell, Linda K. Shaw, Joseph Sivak, Kristine Arges, Jennifer Tomfohr, et al. “Echocardiographic Assessment of Right Ventricular Function and Response to Therapy in Pulmonary Arterial Hypertension.” Am J Cardiol 124, no. 8 (October 15, 2019): 1298–1304. https://doi.org/10.1016/j.amjcard.2019.07.026.Full Text Link to Item
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Tsai, Chia-Feng, Jeffrey S. Smith, Krzysztof Krajewski, Rui Zhao, Ahmed M. Moghieb, Carrie D. Nicora, Xinyu Xiong, et al. “Tandem Mass Tag Labeling Facilitates Reversed-Phase Liquid Chromatography-Mass Spectrometry Analysis of Hydrophilic Phosphopeptides.” Anal Chem 91, no. 18 (September 17, 2019): 11606–13. https://doi.org/10.1021/acs.analchem.9b01814.Full Text Open Access Copy Link to Item
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Ma, Zhiyuan, Yen-Rei Yu, Cristian T. Badea, Jeffrey J. Kovacs, Xinyu Xiong, Suzy Comhair, Claude A. Piantadosi, and Sudarshan Rajagopal. “Vascular Endothelial Growth Factor Receptor 3 Regulates Endothelial Function Through β-Arrestin 1.” Circulation 139, no. 13 (March 26, 2019): 1629–42. https://doi.org/10.1161/CIRCULATIONAHA.118.034961.Full Text Link to Item
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Parikh, Kishan S., Talal Dahhan, Leigh Nicholl, Nicole Ruopp, Gina-Maria Pomann, Terry Fortin, Victor F. Tapson, and Sudarshan Rajagopal. “Clinical Features and Outcomes of Patients with Sarcoidosis-associated Pulmonary Hypertension.” Sci Rep 9, no. 1 (March 11, 2019): 4061. https://doi.org/10.1038/s41598-019-40030-w.Full Text Open Access Copy Link to Item
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Ghadimi, Kamrouz, and Sudarshan Rajagopal. “Nasally Inhaled Nitric Oxide for Sudden Right-Sided Heart Failure in the Intensive Care Unit: NO Time Like the Present.” J Cardiothorac Vasc Anesth 33, no. 3 (March 2019): 648–50. https://doi.org/10.1053/j.jvca.2018.10.008.Full Text Link to Item
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Antonia, Alejandro, Monica Alvarez, Esme Trahair, Kyle Gibbs, Kelly Pittman, Alyson Barnes, Jeffrey Smith, et al. “Pathogen-encoded evasion of CXCL10 and T cell responses,” February 22, 2019. https://doi.org/10.1101/557876.Full Text Open Access Copy
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Rajarathnam, Krishna, Michael Schnoor, Ricardo M. Richardson, and Sudarshan Rajagopal. “How do chemokines navigate neutrophils to the target site: Dissecting the structural mechanisms and signaling pathways.” Cell Signal 54 (February 2019): 69–80. https://doi.org/10.1016/j.cellsig.2018.11.004.Full Text Open Access Copy Link to Item
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Clapham, Katharine R., Inderjit Singh, Isabella S. Capuano, Sudarshan Rajagopal, and Hyung J. Chun. “MEF2 and the Right Ventricle: From Development to Disease.” Front Cardiovasc Med 6 (2019): 29. https://doi.org/10.3389/fcvm.2019.00029.Full Text Open Access Copy Link to Item
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Antonia, Alejandro L., Kyle D. Gibbs, Esme D. Trahair, Kelly J. Pittman, Amelia T. Martin, Benjamin H. Schott, Jeffrey S. Smith, et al. “Pathogen Evasion of Chemokine Response Through Suppression of CXCL10.” Front Cell Infect Microbiol 9 (2019): 280. https://doi.org/10.3389/fcimb.2019.00280.Full Text Link to Item
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Bier, Elianna A., Scott H. Robertson, Geoffry M. Schrank, Craig Rackley, Joseph G. Mammarappallil, Sudarshan Rajagopal, H Page McAdams, and Bastiaan Driehuys. “A protocol for quantifying cardiogenic oscillations in dynamic 129 Xe gas exchange spectroscopy: The effects of idiopathic pulmonary fibrosis.” Nmr Biomed 32, no. 1 (January 2019): e4029. https://doi.org/10.1002/nbm.4029.Full Text Link to Item
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Loyalka, Pranav, Muhammad Z. Ansari, Faisal H. Cheema, Charles C. Miller, Sudarshan Rajagopal, and Keshava Rajagopal. “Surgical pulmonary embolectomy and catheter-based therapies for acute pulmonary embolism: A contemporary systematic review.” J Thorac Cardiovasc Surg 156, no. 6 (December 2018): 2155–67. https://doi.org/10.1016/j.jtcvs.2018.05.085.Full Text Link to Item
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Wang, Ziyi, Mu He, Elianna Bier, Leith Rankine, Geoffry Schrank, Sudarshan Rajagopal, Yuh-Chin Huang, et al. “Hyperpolarized 129 Xe gas transfer MRI: the transition from 1.5T to 3T.” Magn Reson Med 80, no. 6 (December 2018): 2374–83. https://doi.org/10.1002/mrm.27377.Full Text Link to Item
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Smith, Jeffrey S., Lowell T. Nicholson, Jutamas Suwanpradid, Rachel A. Glenn, Nicole M. Knape, Priya Alagesan, Jaimee N. Gundry, et al. “Biased agonists of the chemokine receptor CXCR3 differentially control chemotaxis and inflammation.” Sci Signal 11, no. 555 (November 6, 2018). https://doi.org/10.1126/scisignal.aaq1075.Full Text Link to Item
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Alenezi, Fawaz, Aditya Mandawat, Zachary J. Il’Giovine, Linda K. Shaw, Irfan Siddiqui, Victor F. Tapson, Kristine Arges, et al. “Clinical Utility and Prognostic Value of Right Atrial Function in Pulmonary Hypertension.” Circ Cardiovasc Imaging 11, no. 11 (November 2018): e006984. https://doi.org/10.1161/CIRCIMAGING.117.006984.Full Text Link to Item
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Luttrell, Louis M., Jialu Wang, Bianca Plouffe, Jeffrey S. Smith, Lama Yamani, Suneet Kaur, Pierre-Yves Jean-Charles, et al. “Manifold roles of β-arrestins in GPCR signaling elucidated with siRNA and CRISPR/Cas9.” Sci Signal 11, no. 549 (September 25, 2018). https://doi.org/10.1126/scisignal.aat7650.Full Text Link to Item
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Siddiqui, Irfan, Sudarshan Rajagopal, Amanda Brucker, Karen Chiswell, Bridgette Christopher, Fawaz Alenezi, Aditya Mandawat, et al. “Clinical and Echocardiographic Predictors of Outcomes in Patients With Pulmonary Hypertension.” Am J Cardiol 122, no. 5 (September 1, 2018): 872–78. https://doi.org/10.1016/j.amjcard.2018.05.019.Full Text Link to Item
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Il’Giovine, Zachary J., Hillary Mulder, Karen Chiswell, Kristine Arges, Jennifer Tomfohr, Abraham Hashmi, Eric J. Velazquez, Joseph A. Kisslo, Zainab Samad, and Sudarshan Rajagopal. “Right Ventricular Longitudinal Strain Reproducibility Using Vendor-Dependent and Vendor-Independent Software.” J Am Soc Echocardiogr 31, no. 6 (June 2018): 721-732.e5. https://doi.org/10.1016/j.echo.2018.01.008.Full Text Link to Item
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Smith, Jeffrey S., Robert J. Lefkowitz, and Sudarshan Rajagopal. “Biased signalling: from simple switches to allosteric microprocessors.” Nat Rev Drug Discov 17, no. 4 (April 2018): 243–60. https://doi.org/10.1038/nrd.2017.229.Full Text Link to Item
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Prem Kumar, K. S., R. Sudarshan, G Sree Vijayabala, Samuel Raj Srinivasan, and Prajna V. Kini. “A Study on the Assessment of Haller Cells in Panoramic Radiograph.” Niger Med J 59, no. 3 (2018): 25–27. https://doi.org/10.4103/nmj.NMJ_166_18.Full Text Link to Item
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Rajagopal, Sudarshan, and Sudha K. Shenoy. “GPCR desensitization: Acute and prolonged phases.” Cell Signal 41 (January 2018): 9–16. https://doi.org/10.1016/j.cellsig.2017.01.024.Full Text Link to Item
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Smith, Jeffrey S., Sudarshan Rajagopal, and Amber Reck Atwater. “Chemokine Signaling in Allergic Contact Dermatitis: Toward Targeted Therapies.” Dermatitis 29, no. 4 (2018): 179–86. https://doi.org/10.1097/DER.0000000000000391.Full Text Link to Item
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Viswanathan, Gayathri, Argen Mamazhakypov, Ralph T. Schermuly, and Sudarshan Rajagopal. “The Role of G Protein-Coupled Receptors in the Right Ventricle in Pulmonary Hypertension.” Front Cardiovasc Med 5 (2018): 179. https://doi.org/10.3389/fcvm.2018.00179.Full Text Link to Item
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Broderick-Forsgren, Kathleen, Clemontina A. Davenport, Joseph A. Sivak, Charles William Hargett, Michael C. Foster, Andrew Monteagudo, Alicia Armour, et al. “Improving on the diagnostic characteristics of echocardiography for pulmonary hypertension.” Int J Cardiovasc Imaging 33, no. 9 (September 2017): 1341–49. https://doi.org/10.1007/s10554-017-1114-2.Full Text Link to Item
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Smith, Jeffrey S., Priya Alagesan, Nimit K. Desai, Thomas F. Pack, Jiao-Hui Wu, Asuka Inoue, Neil J. Freedman, and Sudarshan Rajagopal. “C-X-C Motif Chemokine Receptor 3 Splice Variants Differentially Activate Beta-Arrestins to Regulate Downstream Signaling Pathways.” Mol Pharmacol 92, no. 2 (August 2017): 136–50. https://doi.org/10.1124/mol.117.108522.Full Text Link to Item
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Wang, Ziyi, Scott Haile Robertson, Jennifer Wang, Mu He, Rohan S. Virgincar, Geoffry M. Schrank, Elianna A. Bier, et al. “Quantitative analysis of hyperpolarized 129 Xe gas transfer MRI.” Med Phys 44, no. 6 (June 2017): 2415–28. https://doi.org/10.1002/mp.12264.Full Text Link to Item
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Onaran, H Ongun, Caterina Ambrosio, Özlem Uğur, Erzsebet Madaras Koncz, Maria Cristina Grò, Vanessa Vezzi, Sudarshan Rajagopal, and Tommaso Costa. “Systematic errors in detecting biased agonism: Analysis of current methods and development of a new model-free approach.” Sci Rep 7 (March 14, 2017): 44247. https://doi.org/10.1038/srep44247.Full Text Link to Item
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Luo, Nancy, Damian Craig, Olga Ilkayeva, Michael Muehlbauer, William E. Kraus, Christopher B. Newgard, Svati H. Shah, and Sudarshan Rajagopal. “Plasma acylcarnitines are associated with pulmonary hypertension.” Pulm Circ 7, no. 1 (March 2017): 211–18. https://doi.org/10.1086/690554.Full Text Link to Item
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Dahhan, Talal, Fawaz Alenezi, Zainab Samad, and Sudarshan Rajagopal. “Echocardiography in the Risk Assessment of Acute Pulmonary Embolism.” Semin Respir Crit Care Med 38, no. 1 (February 2017): 18–28. https://doi.org/10.1055/s-0036-1597563.Full Text Link to Item
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Gundry, Jaimee, Rachel Glenn, Priya Alagesan, and Sudarshan Rajagopal. “A Practical Guide to Approaching Biased Agonism at G Protein Coupled Receptors.” Front Neurosci 11 (2017): 17. https://doi.org/10.3389/fnins.2017.00017.Full Text Link to Item
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Parikh, Kishan S., Youlan Rao, Tariq Ahmad, Kai Shen, G Michael Felker, and Sudarshan Rajagopal. “Novel approach to classifying patients with pulmonary arterial hypertension using cluster analysis.” Pulm Circ 7, no. 2 (2017): 486–93. https://doi.org/10.1177/2045893217705891.Full Text Link to Item
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Dahhan, T., I. Siddiqui, V. F. Tapson, E. J. Velazquez, S. Sun, C. A. Davenport, Z. Samad, and S. Rajagopal. “Clinical and echocardiographic predictors of mortality in acute pulmonary embolism.” Cardiovascular Ultrasound 14, no. 1 (October 28, 2016): 44.
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Dahhan, Talal, Irfan Siddiqui, Victor F. Tapson, Eric J. Velazquez, Stephanie Sun, Clemontina A. Davenport, Zainab Samad, and Sudarshan Rajagopal. “Clinical and echocardiographic predictors of mortality in acute pulmonary embolism.” Cardiovasc Ultrasound 14, no. 1 (October 28, 2016): 44. https://doi.org/10.1186/s12947-016-0087-y.Full Text Open Access Copy Link to Item
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Smith, Jeffrey S., and Sudarshan Rajagopal. “The β-Arrestins: Multifunctional Regulators of G Protein-coupled Receptors.” J Biol Chem 291, no. 17 (April 22, 2016): 8969–77. https://doi.org/10.1074/jbc.R115.713313.Full Text Link to Item
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Ma, Zhiyuan, Lan Mao, and Sudarshan Rajagopal. “Hemodynamic Characterization of Rodent Models of Pulmonary Arterial Hypertension.” J Vis Exp, no. 110 (April 11, 2016). https://doi.org/10.3791/53335.Full Text Link to Item
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Parikh, Kishan S., Sudarshan Rajagopal, Terry Fortin, Victor F. Tapson, and Abby D. Poms. “Safety and Tolerability of High-dose Inhaled Treprostinil in Pulmonary Hypertension.” J Cardiovasc Pharmacol 67, no. 4 (April 2016): 322–25. https://doi.org/10.1097/FJC.0000000000000357.Full Text Link to Item
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Dahhan, Talal, Shiv S. Kaushik, Mu He, Joseph G. Mammarappallil, Victor F. Tapson, Holman P. McAdams, Thomas A. Sporn, Bastiaan Driehuys, and Sudarshan Rajagopal. “Abnormalities in hyperpolarized (129)Xe magnetic resonance imaging and spectroscopy in two patients with pulmonary vascular disease.” Pulm Circ 6, no. 1 (March 2016): 126–31. https://doi.org/10.1086/685110.Full Text Link to Item
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Parikh, Kishan S., Sudarshan Rajagopal, Kristine Arges, Tariq Ahmad, Joseph Sivak, Prashant Kaul, Svati H. Shah, et al. “Use of outcome measures in pulmonary hypertension clinical trials.” Am Heart J 170, no. 3 (September 2015): 419-29.e3. https://doi.org/10.1016/j.ahj.2015.06.010.Full Text Link to Item
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Forsha, Daniel, Niels Risum, Sudarshan Rajagopal, Stephen Dolgner, Christoph Hornik, Huiman Barnhart, Joseph Kisslo, and Piers Barker. “The influence of angle of insonation and target depth on speckle-tracking strain.” J Am Soc Echocardiogr 28, no. 5 (May 2015): 580–86. https://doi.org/10.1016/j.echo.2014.12.015.Full Text Link to Item
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Onaran, H Ongun, Sudarshan Rajagopal, and Tommaso Costa. “What is biased efficacy? Defining the relationship between intrinsic efficacy and free energy coupling.” Trends Pharmacol Sci 35, no. 12 (December 2014): 639–47. https://doi.org/10.1016/j.tips.2014.09.010.Full Text Link to Item
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Rajagopal, Sudarshan, Daniel E. Forsha, Niels Risum, Christoph P. Hornik, Abby D. Poms, Terry A. Fortin, Victor F. Tapson, Eric J. Velazquez, Joseph Kisslo, and Zainab Samad. “Comprehensive assessment of right ventricular function in patients with pulmonary hypertension with global longitudinal peak systolic strain derived from multiple right ventricular views.” J Am Soc Echocardiogr 27, no. 6 (June 2014): 657-665.e3. https://doi.org/10.1016/j.echo.2014.02.001.Full Text Link to Item
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Forsha, Daniel, Niels Risum, P Andrea Kropf, Sudarshan Rajagopal, P Brian Smith, Ronald J. Kanter, Zainab Samad, Peter Sogaard, Piers Barker, and Joseph Kisslo. “Right ventricular mechanics using a novel comprehensive three-view echocardiographic strain analysis in a normal population.” J Am Soc Echocardiogr 27, no. 4 (April 2014): 413–22. https://doi.org/10.1016/j.echo.2013.12.018.Full Text Link to Item
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Kahsai, Alem W., Sudarshan Rajagopal, Jinpeng Sun, and Kunhong Xiao. “Monitoring protein conformational changes and dynamics using stable-isotope labeling and mass spectrometry.” Nat Protoc 9, no. 6 (2014): 1301–19. https://doi.org/10.1038/nprot.2014.075.Full Text Link to Item
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Rajagopal, Sudarshan, Daniel L. Bassoni, James J. Campbell, Norma P. Gerard, Craig Gerard, and Tom S. Wehrman. “Biased agonism as a mechanism for differential signaling by chemokine receptors.” J Biol Chem 288, no. 49 (December 6, 2013): 35039–48. https://doi.org/10.1074/jbc.M113.479113.Full Text Link to Item
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Rajagopal, Sudarshan. “Quantifying biased agonism: understanding the links between affinity and efficacy.” Nat Rev Drug Discov 12, no. 6 (June 2013): 483. https://doi.org/10.1038/nrd3954-c1.Full Text Link to Item
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Forsha, Daniel E., Niels Risum, Phillip B. Smith, Andrea Kropf, Sudarshan Rajagopal, Zainab Samad, Ronald J. Kanter, Barker Piers, and Joseph Kisslo. “A Novel Comprehensive RV Strain Analysis: Echocardiographic Approach to Define a Normal Adult Population.” Circulation 126, no. 21 (November 20, 2012).Link to Item
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Xiao, K., J. Sun, J. Kim, S. Rajagopal, B. Zhai, J. Villén, W. Haas, et al. “Erratum: Global phosphorylation analysis of ß-arrestin-mediated signaling downstream of a seven transmembrane receptor (7TMR) (Proceedings of the National Academy of Sciences of the United States of America (2010) 107, 34 (15299-15304) doi:10.1073/pnas.1008461107).” Proceedings of the National Academy of Sciences of the United States of America 109, no. 33 (August 14, 2012): 13464. https://doi.org/10.1073/pnas.1211889109.Full Text
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Rajagopal, Sudarshan, Seungkirl Ahn, David H. Rominger, William Gowen-MacDonald, Christopher M. Lam, Scott M. Dewire, Jonathan D. Violin, and Robert J. Lefkowitz. “Quantifying ligand bias at seven-transmembrane receptors.” Mol Pharmacol 80, no. 3 (September 2011): 367–77. https://doi.org/10.1124/mol.111.072801.Full Text Link to Item
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Kahsai, Alem W., Kunhong Xiao, Sudarshan Rajagopal, Seungkirl Ahn, Arun K. Shukla, Jinpeng Sun, Terrence G. Oas, and Robert J. Lefkowitz. “Multiple ligand-specific conformations of the β2-adrenergic receptor.” Nat Chem Biol 7, no. 10 (August 21, 2011): 692–700. https://doi.org/10.1038/nchembio.634.Full Text Link to Item
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Hara, Makoto R., Jeffrey J. Kovacs, Erin J. Whalen, Sudarshan Rajagopal, Ryan T. Strachan, Wayne Grant, Aaron J. Towers, et al. “A stress response pathway regulates DNA damage through β2-adrenoreceptors and β-arrestin-1.” Nature 477, no. 7364 (August 21, 2011): 349–53. https://doi.org/10.1038/nature10368.Full Text Link to Item
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Nobles, Kelly N., Kunhong Xiao, Seungkirl Ahn, Arun K. Shukla, Christopher M. Lam, Sudarshan Rajagopal, Ryan T. Strachan, et al. “Distinct phosphorylation sites on the β(2)-adrenergic receptor establish a barcode that encodes differential functions of β-arrestin.” Sci Signal 4, no. 185 (August 9, 2011): ra51. https://doi.org/10.1126/scisignal.2001707.Full Text Link to Item
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Rajagopal, Sudarshan, Jeff Kovacs, Cristian Badea, G Allan Johnson, Howard A. Rockman, Claude A. Piantadosi, and Robert J. Lefkowitz. “BETA-ARRESTINS REGULATE SIGNALING BY BONE MORPHOGENETIC PROTEIN TYPE II RECEPTOR IN PULMONARY ARTERIAL HYPERTENSION.” Journal of the American College of Cardiology 57, no. 14 (April 2011): E2046–E2046. https://doi.org/10.1016/s0735-1097(11)62046-9.Full Text
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Whalen, Erin J., Sudarshan Rajagopal, and Robert J. Lefkowitz. “Therapeutic potential of β-arrestin- and G protein-biased agonists.” Trends Mol Med 17, no. 3 (March 2011): 126–39. https://doi.org/10.1016/j.molmed.2010.11.004.Full Text Link to Item
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Xiao, Kunhong, Jinpeng Sun, Jihee Kim, Sudarshan Rajagopal, Bo Zhai, Judit Villén, Wilhelm Haas, et al. “Global phosphorylation analysis of beta-arrestin-mediated signaling downstream of a seven transmembrane receptor (7TMR).” Proc Natl Acad Sci U S A 107, no. 34 (August 24, 2010): 15299–304. https://doi.org/10.1073/pnas.1008461107.Full Text Link to Item
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Rajagopal, Sudarshan, Keshava Rajagopal, and Robert J. Lefkowitz. “Teaching old receptors new tricks: biasing seven-transmembrane receptors.” Nat Rev Drug Discov 9, no. 5 (May 2010): 373–86. https://doi.org/10.1038/nrd3024.Full Text Link to Item
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Rajagopal, Sudarshan, Jihee Kim, Seungkirl Ahn, Stewart Craig, Christopher M. Lam, Norma P. Gerard, Craig Gerard, and Robert J. Lefkowitz. “Beta-arrestin- but not G protein-mediated signaling by the "decoy" receptor CXCR7.” Proc Natl Acad Sci U S A 107, no. 2 (January 12, 2010): 628–32. https://doi.org/10.1073/pnas.0912852107.Full Text Link to Item
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Rajagopal, Sudarshan, and Stephen B. H. Kent. “Total chemical synthesis and biophysical characterization of the minimal isoform of the KChIP2 potassium channel regulatory subunit.” Protein Sci 16, no. 9 (September 2007): 2056–64. https://doi.org/10.1110/ps.072876107.Full Text Link to Item
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Ihee, Hyotcherl, Sudarshan Rajagopal, Vukica Srajer, Reinhard Pahl, Spencer Anderson, Marius Schmidt, Friedrich Schotte, Philip A. Anfinrud, Michael Wulff, and Keith Moffat. “Visualizing reaction pathways in photoactive yellow protein from nanoseconds to seconds.” Proc Natl Acad Sci U S A 102, no. 20 (May 17, 2005): 7145–50. https://doi.org/10.1073/pnas.0409035102.Full Text Link to Item
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Rajagopal, Sudarshan, Spencer Anderson, Vukica Srajer, Marius Schmidt, Reinhard Pahl, and Keith Moffat. “A structural pathway for signaling in the E46Q mutant of photoactive yellow protein.” Structure 13, no. 1 (January 2005): 55–63. https://doi.org/10.1016/j.str.2004.10.016.Full Text Link to Item
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Rajagopal, Sudarshan, Konstantin S. Kostov, and Keith Moffat. “Analytical trapping: extraction of time-independent structures from time-dependent crystallographic data.” J Struct Biol 147, no. 3 (September 2004): 211–22. https://doi.org/10.1016/j.jsb.2004.04.007.Full Text Link to Item
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Anderson, Spencer, Vukica Srajer, Reinhard Pahl, Sudarshan Rajagopal, Friedrich Schotte, Philip Anfinrud, Michael Wulff, and Keith Moffat. “Chromophore conformation and the evolution of tertiary structural changes in photoactive yellow protein.” Structure 12, no. 6 (June 2004): 1039–45. https://doi.org/10.1016/j.str.2004.04.008.Full Text Link to Item
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Rajagopal, Sudarshan, Marius Schmidt, Spencer Anderson, Hyotcherl Ihee, and Keith Moffat. “Analysis of experimental time-resolved crystallographic data by singular value decomposition.” Acta Crystallogr D Biol Crystallogr 60, no. Pt 5 (May 2004): 860–71. https://doi.org/10.1107/S0907444904004160.Full Text Link to Item
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Schmidt, Marius, Reinhard Pahl, Vukica Srajer, Spencer Anderson, Zhong Ren, Hyotcherl Ihee, Sudarshan Rajagopal, and Keith Moffat. “Protein kinetics: structures of intermediates and reaction mechanism from time-resolved x-ray data.” Proc Natl Acad Sci U S A 101, no. 14 (April 6, 2004): 4799–4804. https://doi.org/10.1073/pnas.0305983101.Full Text Link to Item
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Rajagopal, S., J. M. Key, E. B. Purcell, D. J. Boerema, and K. Moffat. “Purification and initial characterization of a putative blue light-regulated phosphodiesterase from Escherichia coli.” Photochemistry and Photobiology 80, no. 3 (January 1, 2004): 542–47. https://doi.org/10.1562/0031-8655(2004)080<0542:PAICOA>2.0.CO;2.Full Text
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Rajagopal, Sudarshan, Jason M. Key, Erin B. Purcell, David J. Boerema, and Keith Moffat. “Purification and initial characterization of a putative blue light-regulated phosphodiesterase from Escherichia coli.” Photochem Photobiol 80, no. 3 (2004): 542–47. https://doi.org/10.1562/2004-06-16-RA-203.Full Text Link to Item
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Rajagopal, S., and K. Moffat. “Erratum: Crystal structure of a photoactive yellow protein from a sensor histidine kinase: Conformational variability and signal transduction (Proceedings of the National Academy of Sciences of the United States of America (February 18, 2003) 100:4 (1649-1654).” Proceedings of the National Academy of Sciences of the United States of America 100, no. 13 (June 24, 2003): 8037. https://doi.org/10.1073/pnas.1432896100.Full Text
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Schmidt, Marius, Sudarshan Rajagopal, Zhong Ren, and Keith Moffat. “Application of singular value decomposition to the analysis of time-resolved macromolecular x-ray data.” Biophys J 84, no. 3 (March 2003): 2112–29. https://doi.org/10.1016/S0006-3495(03)75018-8.Full Text Link to Item
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Rajagopal, Sudarshan, and Keith Moffat. “Crystal structure of a photoactive yellow protein from a sensor histidine kinase: conformational variability and signal transduction.” Proc Natl Acad Sci U S A 100, no. 4 (February 18, 2003): 1649–54. https://doi.org/10.1073/pnas.0336353100.Full Text Link to Item
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Crosson, Sean, Sudarshan Rajagopal, and Keith Moffat. “The LOV domain family: photoresponsive signaling modules coupled to diverse output domains.” Biochemistry 42, no. 1 (January 14, 2003): 2–10. https://doi.org/10.1021/bi026978l.Full Text Link to Item
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Nathan, Steven D., Aaron Waxman, Sudarshan Rajagopal, Amy Case, Shilpa Johri, Hilary DuBrock, David De La Zerda, et al. “Inhaled Treprostinil and FVC Change in Patients With Interstitial Lung Disease and Associated Pulmonary Hypertension,” n.d.
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Book Sections
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Zheng, K., A. Kibrom, G. Viswanathan, and S. Rajagopal. “Arrestin-mediated signaling at GPCRs.” In GPCRs: Structure, Function, and Drug Discovery, 243–55, 2019. https://doi.org/10.1016/B978-0-12-816228-6.00012-X.Full Text
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Conference Papers
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Bier, Elianna A., Fawaz Alenezi, Junlan Lu, Ziyi Wang, Joseph G. Mammarappallil, Bryan O’Sullivan-Murphy, Alaattin Erkanli, Bastiaan Driehuys, and Sudarshan Rajagopal. “Noninvasive diagnosis of pulmonary hypertension with hyperpolarised 129Xe magnetic resonance imaging and spectroscopy.” In Erj Open Res, Vol. 8, 2022. https://doi.org/10.1183/23120541.00035-2022.Full Text Link to Item
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Suwanpradid, J., P. Hoang, J. Kwock, L. Floyd, J. Smith, R. Kedl, A. Atwater, S. Rajagopal, D. Corcoran, and A. S. MacLeod. “IL-27 in macrophages mediates T cell survival and dermal cluster formation in allergic contact hypersensitivity.” In Journal of Investigative Dermatology, 139:S2–S2. ELSEVIER SCIENCE INC, 2019.Link to Item
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Bier, E., Z. Wang, A. Swaminathan, J. Nouls, M. He, J. Mammarappallil, S. Luo, B. Driehuys, and S. Rajagopal. “129Xenon MR Imaging and Spectroscopic Signatures to Differentiate Pulmonary Arterial Hypertension from Other Heart and Lung Disease.” In American Journal of Respiratory and Critical Care Medicine, Vol. 199. AMER THORACIC SOC, 2019.Link to Item
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Smith, J. S., L. Nicholson, J. Suwanpradid, R. Glenn, J. Gundry, P. Alagesan, N. Knape, et al. “678 Biased CXCR3 ligands differentially alter allergic contact hypersensitivity and chemotaxis.” In Journal of Investigative Dermatology, 137:S117–S117. Elsevier BV, 2017. https://doi.org/10.1016/j.jid.2017.02.701.Full Text
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Dahhan, T., K. Parikh, N. F. Ruopp, V. Poon, G. -. M. Pomann, T. Fortin, V. F. Tapson, and S. Rajagopal. “Clinical Features And Outcomes Of Patients With Sarcoidosis Associated Pulmonary Hypertension At A Tertiary Care Center, Using Pulmonary Vasodilator Medications.” In American Journal of Respiratory and Critical Care Medicine, Vol. 195. AMER THORACIC SOC, 2017.Link to Item
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Alenezi, Fawaz, Aditya Mandawat, Irfan Siddiqui, Kristine Arges, Danny Rivera, Eric Velazquez, Pamela Douglas, Sudarshan Rajagopal, and Zainab Samad. “Right Atrial Dysfunction From Speckle Tracking Strain Echocardiography Associated With Mortality in Patients With Pulmonary Hypertension.” In Circulation, Vol. 134. LIPPINCOTT WILLIAMS & WILKINS, 2016.Link to Item
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Siddiqui, Irfan, Sudarshan Rajagopal, Amanda Brucker, Karen Chiswell, Fawaz Al Enezi, Danny Rivera, Aditya Mandawat, et al. “Clinical and Echocardiographic Predictors of Clinical Outcomes in Pulmonary Arterial Hypertension.” In Circulation, Vol. 134. LIPPINCOTT WILLIAMS & WILKINS, 2016.Link to Item
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Parikh, K. S., Y. Rao, K. Shen, and S. Rajagopal. “Patient Characteristic Cluster Analysis Predicts Response To Therapy To Oral Treprostinil In Pulmonary Arterial Hypertension.” In American Journal of Respiratory and Critical Care Medicine, Vol. 193. AMER THORACIC SOC, 2016.Link to Item
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Swaminathan, A. C., A. Poms, K. Kennedy, H. Zhu, E. Gaspard, T. A. Fortin, J. Senick, et al. “Toward Theranostic Biomarkers In Pulmonary Hypertension.” In American Journal of Respiratory and Critical Care Medicine, Vol. 193. AMER THORACIC SOC, 2016.Link to Item
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Luo, Nancy, Damian M. Craig, Olga Ilkayeva, James Bain, Michael Muehlbauer, William E. Kraus, Christopher B. Newgard, Svati H. Shah, and Sudarshan Rajagopal. “Plasma Metabolomic Profiles Differentiate Hemodynamic Subtypes of Pulmonary Hypertension.” In Circulation, Vol. 132. LIPPINCOTT WILLIAMS & WILKINS, 2015.Link to Item
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Dahhan, T., I. Siddiqui, Z. Samad, V. Tapson, E. Velazquez, and S. Rajagopal. “Predictors Of 30-Day Survival In Acute Pulmonary Embolism.” In American Journal of Respiratory and Critical Care Medicine, Vol. 191. AMER THORACIC SOC, 2015.Link to Item
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Krishnamoorthy, Arun, Sneha Vakamudi, Mara H. Watson, Jennifer S. Byrns, Sudarshan Rajagopal, G Michael Felker, Joseph G. Rogers, and Chetan B. Patel. “Hemodynamic Response to Continuous Outpatient Milrinone Infusion in Advanced Heart Failure Patients with Mixed Pulmonary Hypertension.” In Journal of Cardiac Failure, 20:S41–S41. Elsevier BV, 2014. https://doi.org/10.1016/j.cardfail.2014.06.118.Full Text
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Moffat, K., S. Anderson, S. Rajagopal, V. Srajer, R. Pahl, H. Ihee, M. Schmidt, and J. Key. “How do signaling photoreceptors respond to light?” In Acta Crystallographica Section a Foundations of Crystallography, 61:c72–c72. International Union of Crystallography (IUCr), 2005. https://doi.org/10.1107/s0108767305096947.Full Text
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Schmidt, M., S. Rajagopal, S. Anderson, and K. Moffat. “Protein kinetics: relaxations on atomic length scales.” In Acta Crystallographica Section a Foundations of Crystallography, 60:s19–s19. International Union of Crystallography (IUCr), 2004. https://doi.org/10.1107/s0108767304099647.Full Text
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Rajagopal, S., S. Anderson, H. Ihee, V. Srajer, M. Schmidt, R. Pahl, and K. Moffat. “A structural pathway for signaling in photoactive yellow protein.” In Biophysical Journal, 86:83A-83A. BIOPHYSICAL SOCIETY, 2004.Link to Item
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Moffat, K., V. Srajer, R. Pahl, Z. Ren, M. Schmidt, S. Anderson, S. Crosson, et al. “Time-resolved macromolecular crystallography: molecular movies?” In Acta Crystallographica Section a Foundations of Crystallography, 58:c27–c27. International Union of Crystallography (IUCr), 2002. https://doi.org/10.1107/s0108767302086166.Full Text
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Schmidt, M., R. Pahl, V. Srajer, S. Anderson, K. Brister, S. Ruan, S. Rajagopal, Z. Ren, and K. Moffat. “Application of singular value decomposition to time-resolved X-ray data; simulations and experiments.” In Acta Crystallographica Section a Foundations of Crystallography, 58:c374–c374. International Union of Crystallography (IUCr), 2002. https://doi.org/10.1107/s0108767302099956.Full Text
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Dwyer, J. J., M. A. Dwyer, S. Rajagopal, and A. A. Kossiakoff. “Probing the dielectric environment of RNase S using a fluorescent, non-natural amino acid.” In Biophysical Journal, 78:294A-294A. BIOPHYSICAL SOCIETY, 2000.Link to Item
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Dwyer, J. J., M. A. Dwyer, S. Rajagopal, and A. A. Kossiakoff. “Investigation of structure and stability in a model protein system: A synthetic variant of the C-terminal fragment of ovomucoid third domain.” In Biophysical Journal, 78:294A-294A. BIOPHYSICAL SOCIETY, 2000.Link to Item
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Preprints
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Gardner, Julia, Dylan Scott Eiger, Chloe Hicks, Issac Choi, Uyen Pham, and Sudarshan Rajagopal. “Subcellular localization of GPCR kinases differentially modulate biased signaling at CXCR3.” Cold Spring Harbor Laboratory, July 11, 2022. https://doi.org/10.1101/2022.07.11.499601.Full Text
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Park, Saejeong, Zhiyuan Ma, Georgia Zarkada, Irinna Papangeli, Sarin Paluri, Nour Nazo, Xinyu Xiong, et al. “Endothelial β-arrestins Regulate Mechanotransduction by the Type II Bone Morphogenetic Protein Receptor in Primary Cilia.” BioRxiv, 2022. https://doi.org/10.1101/2022.02.04.479175.Full Text
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- Teaching & Mentoring
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Recent Courses
- BIOCHEM 393: Research Independent Study 2023
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- CMB 710A: Cell & Molecular Biology Module I 2023
- BIOCHEM 393: Research Independent Study 2022
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- CMB 710A: Cell & Molecular Biology Module I 2022
- PHARM 494: Research Independent Study 2022
- BIOCHEM 393: Research Independent Study 2021
- BIOCHEM 593: Research Independent Study 2021
- PHARM 494: Research Independent Study 2021
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