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α2‐glycine receptors modulate adult hippocampal neurogenesis and spatial memory
Author(s) -
Lin MinShan,
Xiong WenChao,
Li ShuJi,
Gong Zhi,
Cao Xiong,
Kuang XiaoJing,
Zhang Yuan,
Gao TianMing,
Mechawar Naguib,
Liu Ce,
Zhu XinHong
Publication year - 2017
Publication title -
developmental neurobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.716
H-Index - 129
eISSN - 1932-846X
pISSN - 1932-8451
DOI - 10.1002/dneu.22549
Subject(s) - neurogenesis , dentate gyrus , neuroscience , hippocampal formation , glycine receptor , biology , neural stem cell , hippocampus , strychnine , picrotoxin , receptor , glycine , stem cell , microbiology and biotechnology , gabaa receptor , genetics , amino acid
The α2‐glycine receptors (GlyRs) play important roles during early central nervous system development. However, these receptors’ possible involvement in neurodevelopmental events occurring in the adult brain remains to be explored. Adult hippocampal neurogenesis (AHN) is the process by which new granule cell neurons are added to the dentate gyrus (DG) throughout adulthood. In this study, we observed that hippocampal adult neural stem cells (ANSCs) express α2‐containing GlyRs. Pharmacological inhibition of GlyRs by strychnine or picrotoxin decreased the proliferation of ANSCs, both in vivo and in vitro . Mice knockout for glra2 , the gene coding for the GlyR α2 subunit, were determined to display impaired AHN, and this phenomenon was accompanied by deficits in spatial memory. These results, which reveal neurodevelopmental roles for α2‐GlyRs in the adult brain, may be clinically relevant, given that a mutation in GLAR2 , as well as AHN impairments, have been reported in autism spectrum disorder. © 2017 Wiley Periodicals, Inc. Develop Neurobiol 77: 1430–1441, 2017