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Deciphering perivascular macrophages and microglia in the retinal ganglion cell layers

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Title
Deciphering perivascular macrophages and microglia in the retinal ganglion cell layers
Author(s)
Jeon, Jehwi; Park, Yong Soo; Sang-Hoon Kim; Kong, Eunji; Kim, Jay; Yang, Jee Myung; Lee, Joo Yong; Kim, You-Me; Kim, In-Beom; Kim, Pilhan
Publication Date
2024-03
Journal
Frontiers in Cell and Developmental Biology, v.12
Publisher
Frontiers Media S.A.
Abstract
Introduction: The classically defined two retinal microglia layers are distributed in inner and outer plexiform layers. Although there are some reports that retinal microglia are also superficially located around the ganglion cell layer (GCL) in contact with the vitreous, there has been a lack of detailed descriptions and not fully understood yet. Methods: We visualized the microglial layers by using CX3CR1-GFP (C57BL6) transgenic mice with both healthy and disease conditions including NaIO3-induced retinal degeneration models and IRBP-induced auto-immune uveitis models. Result: We found the GCL microglia has two subsets; peripheral (pph) microglia located on the retinal parenchyma and BAM (CNS Border Associated Macrophage) which have a special stretched phenotype only located on the surface of large retinal veins. First, in the pph microglia subset, but not in BAM, Galectin-3 and LYVE1 are focally expressed. However, LYVE1 is specifically expressed in the amoeboid or transition forms, except the typical dendritic morphology in the pph microglia. Second, BAM is tightly attached to the surface of the retinal veins and has similar morphology patterns in both the healthy and disease conditions. CD86(+) BAM has a longer process which vertically passes the proximal retinal veins. Our data helps decipher the basic anatomy and pathophysiology of the retinal microglia in the GCL. Discussion: Our data helps decipher the basic anatomy and pathophysiology of the retinal microglia in the GCL.
URI
https://pr.ibs.re.kr/handle/8788114/15112
DOI
10.3389/fcell.2024.1368021
ISSN
2296-634X
Appears in Collections:
Korea Virus Research Institute(한국바이러스기초연구소) > Center for Viral Immunology(바이러스 면역 연구센터) > 1. Journal Papers (저널논문)
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