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Int. J. Mol. Sci. 2017, 18(2), 334; doi:10.3390/ijms18020334

Proteomic Analysis of Various Rat Ocular Tissues after Ischemia–Reperfusion Injury and Possible Relevance to Acute Glaucoma

1
Institute of Bioinformatics and Structural Biology & Department of Medical Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
2
Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
3
Center for Teacher Education, National Tsing Hua University, Hsinchu 300, Taiwan
4
Department of Applied Science, National Hsinchu University of Education, Hsinchu 300, Taiwan
5
Gynecologic Oncology Section Department of Obstetrics and Gynecology, Hsinchu Mackay Memorial Hospital, Hsinchu 300, Taiwan
6
Department of Ophthalmology, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu 300, Taiwan
*
Authors to whom correspondence should be addressed.
Academic Editor: David Sheehan
Received: 6 December 2016 / Revised: 26 January 2017 / Accepted: 26 January 2017 / Published: 5 February 2017
(This article belongs to the Collection Advances in Proteomic Research)
View Full-Text   |   Download PDF [6901 KB, uploaded 5 February 2017]   |  

Abstract

Glaucoma is a group of eye diseases that can cause vision loss and optical nerve damage. To investigate the protein expression alterations in various intraocular tissues (i.e., the cornea, conjunctiva, uvea, retina, and sclera) during ischemia–reperfusion (IR) injury, this study performed a proteomic analysis to qualitatively investigate such alterations resulting from acute glaucoma. The IR injury model combined with the proteomic analysis approach of two-dimensional difference gel electrophoresis (2D-DIGE) and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) was used to monitor the protein expression alterations in two groups of specimens (an IR injury group and a control group). The analysis results revealed 221 unique differentially expressed proteins of a total of 1481 proteins in the cornea between the two groups. In addition, 97 of 1206 conjunctival proteins, 90 of 1354 uveal proteins, 61 of 1180 scleral proteins, and 37 of 1204 retinal proteins were differentially expressed. These findings imply that different ocular tissues have different tolerances against IR injury. To sum up, this study utilized the acute glaucoma model combined with 2D-DIGE and MALDI-TOF MS to investigate the IR injury affected protein expression on various ocular tissues, and based on the ratio of protein expression alterations, the alterations in the ocular tissues were in the following order: the cornea, conjunctiva, uvea, sclera, and retina. View Full-Text
Keywords: acute glaucoma; ischemia–reperfusion (IR) model; cornea; proteomics; difference gel electrophoresis (DIGE); matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) acute glaucoma; ischemia–reperfusion (IR) model; cornea; proteomics; difference gel electrophoresis (DIGE); matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chen, H.-Y.; Chou, H.-C.; Chang, S.-J.; Liao, E.-C.; Tsai, Y.-T.; Wei, Y.-S.; Li, J.-M.; Lin, L.-H.; Lin, M.-W.; Chen, Y.-J.; Chen, Y.-S.; Lin, C.-C.; Wang, Y.-S.; Ko, M.-L.; Chan, H.-L. Proteomic Analysis of Various Rat Ocular Tissues after Ischemia–Reperfusion Injury and Possible Relevance to Acute Glaucoma. Int. J. Mol. Sci. 2017, 18, 334.

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