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New Insight of Common Regulatory Pathways in Human Trabecular Meshwork Cells in Response to Dexamethasone and Prednisolone Using an Integrated Quantitative Proteomics: SWATH and MRM-HR Mass Spectrometry.

Publication ,  Journal Article
Shan, SW; Do, CW; Lam, TC; Kong, RPW; Li, KK; Chun, KM; Stamer, WD; To, CH
Published in: Journal of proteome research
October 2017

The molecular pathophysiology of corticosteroid-induced ocular hypertension (CIH) is not well understood. To determine the biological mechanisms of CIH, this study investigated protein expression profiles of human trabecular meshwork (hTM) cells in response to dexamethasone and prednisolone treatment. Both discovery-based sequential windowed data independent acquisition of the total high-resolution mass spectra (SWATH-MS) and targeted based high resolution multiple reaction monitoring (MRM-HR) confirmation were applied using a hybrid quadrupole-time-of-flight mass spectrometer. A comprehensive list of 1759 proteins (1% FDR) was generated from the hTM. Quantitative proteomics revealed 20 differentially expressed proteins (p-value ≤ 0.05 and fold-change ≥ 1.5 or ≤ 0.67) commonly induced by prednisolone and dexamethasone, both at 300 nM. These included connective tissue growth factor (CTGF) and thrombospondin-1 (THBS1), two proteins previously implicated in ocular hypertension, glaucoma, and the transforming growth factor-β pathway. Their gene expressions in response to corticosteroids were further confirmed using reverse-transcription polymerase chain reaction. Together with other novel proteins identified in the data sets, additional pathways implicated by these regulated proteins were the phosphatidylinositol 3-kinase (PI3K)-protein kinase B (Akt) signaling pathway, integrin cell surface interaction, extracellular matrix (ECM) proteoglycans, and ECM-receptor interaction. Our results indicated that an integrated platform of SWATH-MS and MRM-HR allows high throughput identification and confirmation of novel and known corticosteroid-regulated proteins in trabecular meshwork cells, demonstrating the power of this technique in extending the current understanding of the pathogenesis of CIH.

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Published In

Journal of proteome research

DOI

EISSN

1535-3907

ISSN

1535-3893

Publication Date

October 2017

Volume

16

Issue

10

Start / End Page

3753 / 3765

Related Subject Headings

  • Trabecular Meshwork
  • Thrombospondin 1
  • Signal Transduction
  • Proteomics
  • Prednisolone
  • Ocular Hypertension
  • Mass Spectrometry
  • Male
  • Humans
  • Glaucoma
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Shan, S. W., Do, C. W., Lam, T. C., Kong, R. P. W., Li, K. K., Chun, K. M., … To, C. H. (2017). New Insight of Common Regulatory Pathways in Human Trabecular Meshwork Cells in Response to Dexamethasone and Prednisolone Using an Integrated Quantitative Proteomics: SWATH and MRM-HR Mass Spectrometry. Journal of Proteome Research, 16(10), 3753–3765. https://doi.org/10.1021/acs.jproteome.7b00449
Shan, Sze Wan, Chi Wai Do, Thomas Chuen Lam, Ricky Pak Wing Kong, King Kit Li, Ka Man Chun, William Daniel Stamer, and Chi Ho To. “New Insight of Common Regulatory Pathways in Human Trabecular Meshwork Cells in Response to Dexamethasone and Prednisolone Using an Integrated Quantitative Proteomics: SWATH and MRM-HR Mass Spectrometry.Journal of Proteome Research 16, no. 10 (October 2017): 3753–65. https://doi.org/10.1021/acs.jproteome.7b00449.
Shan, Sze Wan, et al. “New Insight of Common Regulatory Pathways in Human Trabecular Meshwork Cells in Response to Dexamethasone and Prednisolone Using an Integrated Quantitative Proteomics: SWATH and MRM-HR Mass Spectrometry.Journal of Proteome Research, vol. 16, no. 10, Oct. 2017, pp. 3753–65. Epmc, doi:10.1021/acs.jproteome.7b00449.
Journal cover image

Published In

Journal of proteome research

DOI

EISSN

1535-3907

ISSN

1535-3893

Publication Date

October 2017

Volume

16

Issue

10

Start / End Page

3753 / 3765

Related Subject Headings

  • Trabecular Meshwork
  • Thrombospondin 1
  • Signal Transduction
  • Proteomics
  • Prednisolone
  • Ocular Hypertension
  • Mass Spectrometry
  • Male
  • Humans
  • Glaucoma