alexa Phospho-Site-Specific Antibody Microarray to Study the
ISSN: 0974-276X

Journal of Proteomics & Bioinformatics
Open Access

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Research Article

Phospho-Site-Specific Antibody Microarray to Study the State of Protein Phosphorylation in the Retina

Raju V.S. Rajala*

Departments of Ophthalmology and Cell Biology, and Dean A. McGee Eye Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA

*Corresponding Author:
Dr. Raju V.S. Rajala Ph.D.,
University of Oklahoma Health Sciences Center
608 Stanton L. Young Blvd
Oklahoma City, OK 73104
Tel :405-271-8255,
Fax : 405-271-8128,
E-mail: [email protected]

Received Date: July 15, 2008; Accepted Date: August 05, 2008; Published Date: August 13, 2008

Citation: Rajala RVS (2008) Phospho-Site-Specific Antibody Microarray to Study the State of Protein Phosphorylation in the Retina. J Proteomics Bioinform 1: 242-249. doi: 10.4172/jpb.1000031

Copyright: © 2008 Rajala RVS. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



Neurodegeneration is an important component of diabetic retinopathy as demonstrated by increased neural apoptosis in the retina during experimental and human diabetes. Accumulation of sorbitol and fructose and the generation or enhancement of oxidative stress has been reported in the whole retina of diabetic animals. Aldose reductase (AR), the first and the rate limiting enzyme in the pathway reduces glucose to sorbitol and the diabetic complications are prevented by drugs that inhibit AR. In this study we examined the phosphorylation state of various retinal proteins in response to sorbitol-treatment by phospho-site-specific antibody microarray. Our results suggest that various retinal protein kinases and cytoskeletal proteins either activated or down regulated in response to sorbitol treatment. Further, our study also indicates the activation of retinal insulin and insulin growth factor 1 receptor and their downstream signaling proteins such as phosphoinositide 3-kinanse and protein kinase B (Akt). Understanding the regulation of retinal proteins involved in polyol (sorbitol) pathway would help to design therapeutic agents for the treatment of diabetic retinopathy.


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