Journal
NEUROCHEMISTRY INTERNATIONAL
Volume 151, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuint.2021.105214
Keywords
Oxidative stress; 4-Hydroxy-2-nonenal; Caffeic acid phenylethyl ester; Mitochondrial uncoupling protein; UCP2
Categories
Funding
- Natural Science Foundation of China [81900894, 81870675, 81870651]
- Natural Science Foundation of Tianjin [18JCQNJC11300]
- Tianjin Key Clinical Discipline (Specialty) Project [TJLCZDXKQ004]
- Independent and open project of Tianjin Key Laboratory of retinal function and disease [2019tjswmm004]
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Caffeic acid phenylethyl ester (CAPE) protects retinal ganglion cells from ischemic injury, exhibits antioxidant properties, and functions through modulation of the mitochondrial uncoupling protein UCP2.
Oxidative stress due to mitochondrial produced reactive oxygen species is a major cause of damage seen in many retinal degenerative diseases. Caffeic acid phenylethyl ester (CAPE) is protective agent in multiple tissues and is reported to have anti-oxidant properties. Systemically applied CAPE protected retinal ganglion cells from ischemic injury induced by increased intraocular pressure. CAPE provided complete protection for ARPE19 retinal pigment epithelial cells against tert-butyl hydrogen peroxide and reduced both basal and LPS-stimulated ROS production. The major effect of CAPE was mediated by the mitochondrial uncoupling protein UCP2 since both pharmacological inhibition of UCP2 and siRNA-induced knockdown removed the ability of CAPE to block ROS production. Based on common structural features, CAPE may be acting as a mimetic of the natural UCP2 homeostatic regulator 4-hydroxy-2-nonenal. CAPE may provide a valuable tool to treat oxidative stress-related damage in retinal and other degenerative diseases.
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