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Updated: Jul 16, 2026
Dissection of Human Retina and RPE-Choroid for Proteomic Analysis
Published on: November 12, 2017
Identification of differentially regulated proteins in a patient with Leber's Congenital Amaurosis--a proteomic study
Henrik Vorum1, Morten Østergaard, Greg E Rice
1Department of Ophthalmology, Aarhus University Hospital, Nørrebrogade 44, DK-8000 Aarhus C, Denmark. hv@biokemi.au.dk
Background:
To identify the pattern of protein expression in the retina from a patient with Leber's Congenital Amaurosis (LCA) secondary to a mutation in the AIPL1 gene. The retina from one eye of a patient with LCA and 7 control eyes were studied. The tissue was subjected to high resolution two-dimensional gel electrophoresis, image analysis and mass spectrometry, in an effort to identify differentially regulated proteins.
Results:
In the LCA retina seven protein spots were differentially expressed. Six proteins were significantly up-regulated of which three could be identified as: alphaA-crystallin, triosephophate isomerase, and an N-terminal fragment of the beta-chain of ATP synthase. One protein spot that was down-regulated in the LCA retina was identified as a C-terminal fragment of beta-tubulin.
Conclusion:
Retinal tissue in LCA is characterised by an up-regulation of alphaA-crystallin, triosephosphate isomerase, and ATP synthase (beta-chain fragment) and down-regulation of a fragment of beta-tubulin. These proteins/protein fragments may play a crucial role for the retinal degeneration processes in LCA and other retinal dystrophies.
