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Proteomics Lab

Proteomics is the culmination of advances in chemistry, physics, bioinformatics, and molecular biology that allow the study of thousands of proteins simultaneously. A proteome can be defined as the complete set of proteins expressed in a particular cell or tissue of interest. This strategy is especially important in eye diseases where there are limited cell and animal models.

We are using proteomics to discover biomarkers, therapeutic targets, and molecular pathways involved in several eye diseases where diagnosis is difficult and current treatment is inadequate.

Projects

A multi-institution precision health consortium for collecting ophthalmic surgical samples.

We are using proteomics to study the vitreous fluid from eyes with ADNIV.

A proteome can be defined as the complete set of proteins expressed in a particular cell or tissue of interest.

The vitreous is an optically clear, collagenous extracellular matrix that fills the inside of the eye and overlies the retina.

News

Jul 6 2021 | Posted In: 20/20 Blog
Palo Alto, CA – As genetic testing and molecular biomarkers open new avenues for medical care, researchers are more reliant on samples from human subjects than ever.
Jun 28 2021 | Posted In: 20/20 Blog
Palo Alto, CA ­— Jennifer Vu, a recent Stanford graduate and researcher in the Mahajan Lab, earned the 2021 Oral Communication Program Excellence in Honors Thesis Presentation Award. 
May 6 2021 | Posted In: 20/20 Blog
Palo Alto, CA — Most people today, including many physicians, see the hypodermic needle as a mundane instrument that isn’t worth a second thought. This is not so for eye surgeons.
Apr 4 2021 | Posted In: 20/20 Blog, Awards
Palo Alto, CA —Young Joo Sun Ph.D., postdoctoral fellow in the Mahajan Lab, received a grant from the Brightfocus Foundation to study a key protein involved in macular degeneration.

Publications

Liquid biopsy proteomics of uveal melanoma reveals biomarkers associated with metastatic risk., Velez, Gabriel, Nguyen Huy V., Chemudupati Teja, Ludwig Cassie A., Toral Marcus, Reddy Sunil, Mruthyunjaya Prithvi, and Mahajan Vinit B. , Mol Cancer, 2021 02 24, Volume 20, Issue 1, p.39, (2021)
Structure-based phylogeny identifies Avoralstat as a TMPRSS2 inhibitor that prevents SARS-CoV-2 infection in mice., Sun, Young Joo, Velez Gabriel, Parsons Dylan E., Li Kun, Ortiz Miguel E., Sharma Shaunik, McCray Paul B., Bassuk Alexander G., and Mahajan Vinit B. , J Clin Invest, 2021 Apr 12, (2021)
Proteomic analysis of intermediate uveitis suggests myeloid cell recruitment and implicates IL-23 as a therapeutic target., Sepah, Yasir J., Velez Gabriel, Tang Peter H., Yang Jing, Chemudupati Teja, Li Angela S., Nguyen Quan D., Bassuk Alexander G., and Mahajan Vinit B. , Am J Ophthalmol Case Rep, 2020 Jun, Volume 18, p.100646, (2020)
Personalized Proteomics for Precision Health: Identifying Biomarkers of Vitreoretinal Disease., Velez, Gabriel, Tang Peter H., Cabral Thiago, Cho Galaxy Y., Machlab Daniel A., Tsang Stephen H., Bassuk Alexander G., and Mahajan Vinit B. , Transl Vis Sci Technol, 2018 Sep, Volume 7, Issue 5, p.12, (2018)
HTRA1, an age-related macular degeneration protease, processes extracellular matrix proteins EFEMP1 and TSP1, Lin, Michael K., Yang Jin, Hsu Chun Wei, Gore Anuradha, Bassuk Alexander G., Brown Lewis M., Colligan Ryan, Sengillo Jess D., Mahajan Vinit B., and Tsang Stephen H. , Aging Cell, 05/2018, (2018)
Proteomic analysis of the human retina reveals region-specific susceptibilities to metabolic-and oxidative stress-related diseases, Velez, Gabriel, Machlab Daniel A., Tang Peter H., Sun Yang, Tsang Stephen H., Bassuk Alexander G., and Mahajan Vinit B. , PloS one, Volume 13, p.e0193250, (2018)