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CX3CR1-dependent subretinal microglia cell accumulation is associated with cardinal features of age-related macular degeneration

来自 NCBI

阅读量：

118

作者：

C Combadière，C Feumi，W Raoul，N Keller，F Sennlaub

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摘要：

The role of retinal microglial cells (MCs) in age-related macular degeneration (AMD) is unclear. Here we demonstrated that all retinal MCs express CX3C chemokine receptor 1 (CX3CR1) and that homozygosity for the CX3CR1 M280 allele, which is associated with impaired cell migration, increases the risk of AMD. In humans with AMD, MCs accumulated in the subretinal space at sites of retinal degeneration and choroidal neovascularization (CNV). In CX3CR1-deficient mice, MCs accumulated subretinally with age and albino background and after laser impact preceding retinal degeneration. Raising the albino mice in the dark prevented both events. The appearance of lipid-bloated subretinal MCs was drusen-like on funduscopy of senescent mice, and CX3CR1-dependent MC accumulation was associated with an exacerbation of experimental CNV. These results show that CX3CR1-dependent accumulation of subretinal MCs evokes cardinal features of AMD. These findings reveal what we believe to be a novel pathogenic process with important implications for the development of new therapies for AMD.

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关键词：

Eye Retina Retinal microglial cells Macular degeneration Age Microglial cells

DOI：

10.1172/JCI31692

被引量：

888

年份：

2007

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