Publication List English

2017/07/29
New photic stimulating system with white light-emitting diodes to elicit electroretinograms from zebrafish larvae.

2017/03/09
Potential protective function of the sterol regulatory element binding factor 1-fatty acid desaturase 12 axis in early-stage age-related macular degeneration

2016/07/11
Activation of Sterol Regulatory Element Binding Factors by Fenofibrate and Gemfibrozil Stimulates Myelination in Zebrafish

2016/06/14
Downregulation of GSTK1 Is a Common Mechanism Underlying Hypertrophic Cardiomyopathy

2016/06/07
Comparative Transcriptome Analysis Identifies CCDC80 as a Novel Gene Associated with Pulmonary Arterial Hypertension

tEP300 Protects from Light-Induced Retinopathy in Zebrafish

                     
2016/05/19

Front Pharmacol. 2016 May 19;7:126. doi: 10.3389/fphar.2016.00126. eCollection 2016.

Reiko Kawase, Yuhei Nishimura, Yoshifumi Ashikawa,Shota Sasagawa, Soichiro Murakami, Mizuki Yuge, Shiko Okabe,Koki awaguchi,Hiroshi Yamamoto, Kazumi Moriyuki, Shinsaku Yamane,
Kazuhiro Tsuruma,Masamitsu Shimazawa7, Hideaki Hara, Toshio Tanaka


Exposure of rhodopsin to bright white light can induce photoreceptor cell damage and degeneration. However, a comprehensive understanding of the mechanisms underlying light-induced retinopathy remains elusive. In this study, we performed comparative transcriptome analysis of three rodent models of light-induced retinopathy, and we identified 37 genes that are dysregulated in all three models. Gene ontology analysis revealed that this gene set is significantly associated with a cytokine signaling axis composed of signal transducer and activator of transcription 1 and 3 (STAT1/3), interleukin 6 signal transducer (IL6ST), and oncostatin M receptor (OSMR). Furthermore, the analysis suggested that the histone acetyltransferase EP300 may be a key upstream regulator of the STAT1/3–IL6ST/OSMR axis. To examine the role of EP300 directly, we developed a larval zebrafish model of light-induced retinopathy. Using this model, we demonstrated that pharmacological inhibition of EP300 significantly increased retinal cell apoptosis, decreased photoreceptor cell outer segments, and increased proliferation of putative Müller cells upon exposure to intense light. These results suggest that EP300 may protect photoreceptor cells from light-induced damage and that activation of EP300 may be a novel therapeutic approach for the treatment of retinal degenerative diseases.

ŠΦ˜AƒŠƒ“ƒN

Frontiers

PubMed