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2015 ; 36
(11
): 2995-3007
Nephropedia Template TP
gab.com Text
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English Wikipedia
The anti-inflammatory glycoprotein, CD200, restores neurogenesis and enhances
amyloid phagocytosis in a mouse model of Alzheimer s disease
#MMPMID26315370
Varnum MM
; Kiyota T
; Ingraham KL
; Ikezu S
; Ikezu T
Neurobiol Aging
2015[Nov]; 36
(11
): 2995-3007
PMID26315370
show ga
Cluster of Differentiation-200 (CD200) is an anti-inflammatory glycoprotein
expressed in neurons, T cells, and B cells, and its receptor is expressed on
glia. Both Alzheimer's disease patients and mouse models display age-related or
amyloid-? peptide (A?)-induced reductions in CD200. The goal of this study was to
determine if neuronal CD200 expression restores hippocampal neurogenesis and
reduces A? in the amyloid precursor protein mouse model. Amyloid precursor
protein and wild-type mice were injected at 6 months of age with an
adeno-associated virus expressing CD200 into the hippocampus and sacrificed at
12 months. CD200 expression restored neural progenitor cell proliferation and
differentiation in the subgranular and granular cell layers of the dentate gyrus
and reduced diffuse but not thioflavin-S(+) plaques in the hippocampus. In vitro
studies demonstrated that CD200-stimulated microglia increased neural
differentiation of neural stem cells and enhanced axon elongation and dendrite
number. CD200 also enhanced A? uptake by microglia. These data indicate that
CD200 is capable of enhancing microglia-mediated A? clearance and neural
differentiation and has potential as a therapeutic for Alzheimer's disease.