Neonatal Maternal Separation Alters the Capacity of Adult Neural Precursor Cells to Differentiate into Neurons Via Methylation of Retinoic Acid Receptor Gene Promoter

Boku, Shuken; Toda, Hiroyuki; Nakagawa, Shin; Kato, Akiko; Inoue, Takeshi; Koyama, Tsukasa; Hiroi, Noboru; Kusumi, Ichiro

Neonatal Maternal Separation Alters the Capacity of Adult Neural Precursor Cells to Differentiate into Neurons Via Methylation of Retinoic Acid Receptor Gene Promoter

Boku, Shuken; Toda, Hiroyuki; Nakagawa, Shin et al.

Biological psychiatry, 2015, 77(4), 335-344

Permalink : https://hdl.handle.net/2115/58027

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アクセス権	open access
URI	https://hdl.handle.net/2115/58027
タイトル	Neonatal Maternal Separation Alters the Capacity of Adult Neural Precursor Cells to Differentiate into Neurons Via Methylation of Retinoic Acid Receptor Gene Promoter
著者	Boku, Shuken ; Toda, Hiroyuki ; Nakagawa, Shin ; Kato, Akiko ; Inoue, Takeshi ; Koyama, Tsukasa ; Hiroi, Noboru ; Kusumi, Ichiro
e-Rad_Researcher 60455665 著者名 Boku, Shuken
著者名 Toda, Hiroyuki
e-Rad_Researcher 60360905 著者名 Nakagawa, Shin
著者名 Kato, Akiko
e-Rad_Researcher 70250438 著者名 Inoue, Takeshi
e-Rad_Researcher 10113557 著者名 Koyama, Tsukasa
著者名 Hiroi, Noboru
e-Rad_Researcher 30250426 著者名 Kusumi, Ichiro
言語	英語
キーワード	Adult neurogenesis
	Dentate gyrus
	DNA methylation
	DNA methyltransferase
	Maternal separation
	Retinoic acid receptor
発行日	2015-02-15
出版者	Elsevier
収録物名	Biological psychiatry
巻(号)	77(4)
ページ	335-344
抄録	BACKGROUND: Early life stress is thought to contribute to psychiatric disorders, but the precise mechanisms underlying this link are poorly understood. As neonatal stress decreases adult hippocampal neurogenesis, which, in turn, functionally contributes to many behavioral phenotypes relevant to psychiatric disorders, we examined how in vivo neonatal maternal separation (NMS) impacts the capacity of adult hippocampal neural precursor cells via epigenetic alterations in vitro. METHODS: Rat pups were separated from their dams for 3 hours daily from postnatal day (PND) 2 to PND 14 or were never separated from the dam (as control animals). We isolated adult neural precursor cells from the hippocampal dentate gyrus at PND 56 and assessed rates of proliferation, apoptosis, and differentiation in cell culture. We also evaluated the effect of DNA methylation at the retinoic acid receptor (RAR) promoter stemming from NMS on adult neural precursor cells. RESULTS: NMS attenuated neural differentiation of adult neural precursor cells but had no detectible effect on proliferation, apoptosis, or astroglial differentiation. The DNA methyltransferase (DNMT) inhibitor, 5-aza-dC, reversed a reduction by NMS of neural differentiation of adult neural precursor cells. NMS increased DNMT1 expression and decreased expression of RAR alpha. An RAR alpha agonist increased neural differentiation and an antagonist reduced retinoic acid-induced neural differentiation. NMS increased the methylated portion of RAR alpha promoter, and the DNMT inhibitor reversed a reduction by NMS of RAR alpha messenger RNA expression. CONCLUSIONS: NMS attenuates the capacity of adult hippocampal neural precursor cells to differentiate into neurons by decreasing expression of RAR alpha through DNMT1-mediated methylation of its promoter.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0006-3223
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.biopsych.2014.07.008