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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Neuroinflammation
2016 ; 13
(1
): 57
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Brain pericytes serve as microglia-generating multipotent vascular stem cells
following ischemic stroke
#MMPMID26952098
Sakuma R
; Kawahara M
; Nakano-Doi A
; Takahashi A
; Tanaka Y
; Narita A
; Kuwahara-Otani S
; Hayakawa T
; Yagi H
; Matsuyama T
; Nakagomi T
J Neuroinflammation
2016[Mar]; 13
(1
): 57
PMID26952098
show ga
BACKGROUND: Microglia are the resident macrophage population of the central
nervous system (CNS) and play essential roles, particularly in
inflammation-mediated pathological conditions such as ischemic stroke. Increasing
evidence shows that the population of vascular cells located around the blood
vessels, rather than circulating cells, harbor stem cells and that these resident
vascular stem cells (VSCs) are the likely source of some microglia. However, the
precise traits and origins of these cells under pathological CNS conditions
remain unclear. METHODS: In this study, we used a mouse model of cerebral
infarction to investigate whether reactive pericytes (PCs) acquire
microglia-producing VSC activity following ischemia. RESULTS: We demonstrated the
localization of ionized calcium-binding adaptor molecule 1 (Iba1)-expressing
microglia to perivascular regions within ischemic areas. These cells expressed
platelet-derived growth factor receptor-? (PDGFR?), a hallmark of vascular PCs.
PDGFR?(+) PCs isolated from ischemic, but not non-ischemic, areas expressed
stem/undifferentiated cell markers and subsequently differentiated into various
cell types, including microglia-like cells with phagocytic capacity. CONCLUSIONS:
The study results suggest that vascular PCs acquire multipotent VSC activity
under pathological conditions and may thus be a novel source of microglia.