期刊
PROGRESS IN RETINAL AND EYE RESEARCH
卷 83, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.preteyeres.2020.100936
关键词
Age-related macular degeneration; Geographic atrophy; Complement; C3; C5; Retina
资金
- National Institutes of Health [R01EY028916]
- Research to Prevent Blindness (New York, NY)
- Paul and Evanina Bell Mackall Foundation (Chicago, IL)
This article delves into the roles, biochemical and structural aspects, expression locations, and functions of C3 and C5 in AMD, as well as the development of therapeutics targeting these components. It also emphasizes the relationships of complement biology with inflammasome and microglia/macrophage activity.
Age-related macular degeneration (AMD) remains a major cause of legal blindness, and treatment for the geographic atrophy form of AMD is a significant unmet need. Dysregulation of the complement cascade is thought to be instrumental for AMD pathophysiology. In particular, C3 and C5 are pivotal components of the complement cascade and have become leading therapeutic targets for AMD. In this article, we discuss C3 and C5 in detail, including their roles in AMD, biochemical and structural aspects, locations of expression, and the functions of C3 and C5 fragments. Further, the article critically reviews developing therapeutics aimed at C3 and C5, underscoring the potential effects of broad inhibition of complement at the level of C3 versus more specific inhibition at C5. The relationships of complement biology to the inflammasome and microglia/macrophage activity are highlighted. Concepts of C3 and C5 biology will be emphasized, while we point out questions that need to be settled and directions for future investigations.
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