...epithelial cells by acetylation of FOXO3. J Biol Chem 282...

来自 : www.oalib.com/references/11985 发布时间：2021-03-24

ABSTRACT: Complement factor H (CFH) is a central regulator of the complement system and has been implicated in the etiology of age-related macular degeneration (AMD), a leading cause of blindness in the elderly. In view of previous studies showing that reduced expression of CFH in the retina is a risk factor for developing AMD, there is significant interest in understanding how CFH expression is regulated in the retina. In this study, we have shown that the anti-inflammatory cytokine, IL-27, induced CFH expression in mouse retinal cells and human retinal pigmented epithelial cells (RPE) through STAT1-mediated up-regulation of Interferon Regulatory Factor-1 (IRF-1) and IRF-8. We further show that cells in the ganglion and inner-nuclear layers of the retina constitutively express IRF-1 and IRF-8 and enhanced CFH expression in the retina during ocular inflammation correlated with significant increase in the expression of IRF-1, IRF-8 and IL-27 (IL-27p28 and Ebi3). Our data thus reveal a novel role of IL-27 in regulating complement activation through up-regulation of CFH and suggest that defects in IL-27 signaling or expression may contribute to the reduction of CFH expression in the retina of patients with AMD.
Wu Z, Lauer TW, Sick A, Hackett SF, Campochiaro PA (2007) Oxidative stress modulates complement factor H expression in retinal pigmented epithelial cells...Wu Z, Lauer TW, Sick A, Hackett SF, Campochiaro PA (2007) Oxidative stress modulates complement factor H expression in retinal pigmented epithelial cells by acetylation of FOXO3. J Biol Chem 282: 22414–22425.Wu Z, Lauer TW, Sick A, Hackett SF, Campochiaro PA (2007) Oxidative stress modulates complement factor H expression in retinal pigmented epithelial cells by acetylation of FOXO3. J Biol Chem 282: 22414–22425.Wu Z, Lauer TW, Sick A, Hackett SF, Campochiaro PA (2007) Oxidative stress modulates complement factor H expression in retinal pigmented epithelial cells by acetylation of FOXO3. J Biol Chem 282: 22414–22425.