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NEDD9 Is a Novel and Modifiable Mediator of Platelet-Endothelial Adhesion in the Pulmonary Circulation.

Publication ,  Journal Article
Alba, GA; Samokhin, AO; Wang, R-S; Zhang, Y-Y; Wertheim, BM; Arons, E; Greenfield, EA; Lundberg Slingsby, MH; Ceglowski, JR; Haley, KJ; Yu, Y-R ...
Published in: Am J Respir Crit Care Med
June 15, 2021

Rationale: Data on the molecular mechanisms that regulate platelet-pulmonary endothelial adhesion under conditions of hypoxia are lacking, but may have important therapeutic implications. Objectives: To identify a hypoxia-sensitive, modifiable mediator of platelet-pulmonary artery endothelial cell adhesion and thrombotic remodeling. Methods: Network medicine was used to profile protein-protein interactions in hypoxia-treated human pulmonary artery endothelial cells. Data from liquid chromatography-mass spectrometry and microscale thermophoresis informed the development of a novel antibody (Ab) to inhibit platelet-endothelial adhesion, which was tested in cells from patients with chronic thromboembolic pulmonary hypertension (CTEPH) and three animal models in vivo. Measurements and Main Results: The protein NEDD9 was identified in the hypoxia thrombosome network in silico. Compared with normoxia, hypoxia (0.2% O2) for 24 hours increased HIF-1α (hypoxia-inducible factor-1α)-dependent NEDD9 upregulation in vitro. Increased NEDD9 was localized to the plasma-membrane surface of cells from control donors and patients with CTEPH. In endarterectomy specimens, NEDD9 colocalized with the platelet surface adhesion molecule P-selectin. Our custom-made anti-NEDD9 Ab targeted the NEDD9-P-selectin interaction and inhibited the adhesion of activated platelets to pulmonary artery endothelial cells from control donors in vitro and from patients with CTEPH ex vivo. Compared with control mice, platelet-pulmonary endothelial aggregates and pulmonary hypertension induced by ADP were decreased in NEDD9-/- mice or wild-type mice treated with the anti-NEDD9 Ab, which also decreased chronic pulmonary thromboembolic remodeling in vivo. Conclusions: The NEDD9-P-selectin protein-protein interaction is a modifiable target with which to inhibit platelet-pulmonary endothelial adhesion and thromboembolic vascular remodeling, with potential therapeutic implications for patients with disorders of increased hypoxia signaling pathways, including CTEPH.

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Published In

Am J Respir Crit Care Med

DOI

EISSN

1535-4970

Publication Date

June 15, 2021

Volume

203

Issue

12

Start / End Page

1533 / 1545

Location

United States

Related Subject Headings

  • Signal Transduction
  • Respiratory System
  • Pulmonary Embolism
  • Pulmonary Circulation
  • Models, Animal
  • Middle Aged
  • Mice
  • Male
  • Hypoxia
  • Humans
 

Citation

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Alba, G. A., Samokhin, A. O., Wang, R.-S., Zhang, Y.-Y., Wertheim, B. M., Arons, E., … Maron, B. A. (2021). NEDD9 Is a Novel and Modifiable Mediator of Platelet-Endothelial Adhesion in the Pulmonary Circulation. Am J Respir Crit Care Med, 203(12), 1533–1545. https://doi.org/10.1164/rccm.202003-0719OC
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.
Alba GA, Samokhin AO, Wang R-S, Zhang Y-Y, Wertheim BM, Arons E, et al. NEDD9 Is a Novel and Modifiable Mediator of Platelet-Endothelial Adhesion in the Pulmonary Circulation. Am J Respir Crit Care Med. 2021 Jun 15;203(12):1533–45.
Alba, George A., et al. “NEDD9 Is a Novel and Modifiable Mediator of Platelet-Endothelial Adhesion in the Pulmonary Circulation.Am J Respir Crit Care Med, vol. 203, no. 12, June 2021, pp. 1533–45. Pubmed, doi:10.1164/rccm.202003-0719OC.
Alba GA, Samokhin AO, Wang R-S, Zhang Y-Y, Wertheim BM, Arons E, Greenfield EA, Lundberg Slingsby MH, Ceglowski JR, Haley KJ, Bowman FP, Yu Y-R, Haney JC, Eng G, Mitchell RN, Sheets A, Vargas SO, Seo S, Channick RN, Leary PJ, Rajagopal S, Loscalzo J, Battinelli EM, Maron BA. NEDD9 Is a Novel and Modifiable Mediator of Platelet-Endothelial Adhesion in the Pulmonary Circulation. Am J Respir Crit Care Med. 2021 Jun 15;203(12):1533–1545.

Published In

Am J Respir Crit Care Med

DOI

EISSN

1535-4970

Publication Date

June 15, 2021

Volume

203

Issue

12

Start / End Page

1533 / 1545

Location

United States

Related Subject Headings

  • Signal Transduction
  • Respiratory System
  • Pulmonary Embolism
  • Pulmonary Circulation
  • Models, Animal
  • Middle Aged
  • Mice
  • Male
  • Hypoxia
  • Humans