2023 Fiscal Year Final Research Report
Elucidation of the Mechanism of Retinal Neuropathology by Glycer-AGE and Drug Discovery for Diabetic Retinopathy
Project/Area Number |
20H03837
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 56060:Ophthalmology-related
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Research Institution | Hokkaido University |
Principal Investigator |
Ishida Susumu 北海道大学, 医学研究院, 教授 (10245558)
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Co-Investigator(Kenkyū-buntansha) |
村田 美幸 北海道大学, 医学研究院, 助教 (50423752)
神田 敦宏 北海道大学, 医学研究院, 客員研究員 (80342707)
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Project Period (FY) |
2020-04-01 – 2024-03-31
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Keywords | 糖尿病網膜症 / Glycer-AGE / 網膜神経病態 |
Outline of Final Research Achievements |
Advanced glycation end products derived from glyceraldehyde called Toxic AGE (TAGE) due to its strong cytotoxicity, has been reported to be involved in the pathogenesis of various diseases including diabetic retinopathy. The aim of this study was to elucidate the mechanism of retinal neuropathology caused by TAGE and to develop a novel treatment for DR using anti-TAGE antibodies. In cultured human retinal pigment epithelial cells (RPE), TAGE decreased the barrier function of RPE. We also identified candidate target proteins of TAGE in RPE cells. Plasma levels of TAGE tended to be higher in diabetic retinopathy patients than in controls, but the difference was not significant. Further detailed analysis by stage will be conducted in the future.
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Free Research Field |
網膜細胞生物学
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Academic Significance and Societal Importance of the Research Achievements |
糖尿病網膜症(diabetic retinopathy、DR)は重篤な視機能障害をきたす疾患であり、その病態理解は眼科学における最重要課題の一つである。これまでのDR治療はその血管病態を制御することを目的とされてきたが、近年、DRにおける「神経病態」が注目されている。しかし、DRにおける神経保護的治療法は現在のところ確立されておらず、眼科領域におけるアンメットニーズである。本研究によりTAGEが視細胞の恒常性維持に重要なRPEの機能を変化させることなどが明らかとなり、TAGEよる網膜神経病態形成機序の一端が示された。
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