Mechanism of neural circuit plasticity investigated from cell-type specific chromatin dynamics of juvenile brain
Project/Area Number |
16K14781
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Genetics/Chromosome dynamics
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Research Institution | Niigata University |
Principal Investigator |
SAKAI Akiko 新潟大学, 医歯学総合研究科, 日本学術振興会特別研究員 (70532745)
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Research Collaborator |
NAKATO Ryuichiro
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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Keywords | 臨界期 / 抑制性ニューロン / PV細胞 / ChIP-seq / 細胞種特異的トランスクリプトーム / クロマチン / 転写制御 / Otx2 / トランスクリプトーム / パルブアルブミン / 精神疾患 / ミトコンドリア / 脳・神経 / 神経可塑性 / コヒーシン |
Outline of Final Research Achievements |
This study aimed to clarify gene expression and chromatin dynamics specific to interneurons (PV cells) that govern development of brain function depending on juvenile experience in mammals. Downstream target genes of Otx2 homeoprotein necessary for development of PV cells were identified comprehensively using ChIP-seq and interneuron-specific RNA-seq. Important functions of Otx2 were suggested to be promoting functional development for fast-spiking property characteristic to PV cells as well as homeostatic regulation. Moreover, functional analysis of a cohesin-related factor indicated importance of regulating chromatin structure in maturation of PV cells.
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Academic Significance and Societal Importance of the Research Achievements |
脳の成長には、神経回路の興奮性を調節する抑制性の神経細胞の働きが不可欠である。本研究では、経験に応じて脳の発達を促すOtx2が調節し得る遺伝子として、抑制性神経細胞の機能に必要な遺伝子群や、細胞の恒常性を保つ抗酸化遺伝子を新たに発見した。また、遺伝子調節の背景にある染色体の構造の調節の重要性も見出した。本研究の成果は、脳の成長のしくみと、その異常による精神疾患の原因の解明につながると期待される。
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Report
(4 results)
Research Products
(11 results)
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[Journal Article] Chondroitin Sulfate Is Required for Onset and Offset of Critical Period Plasticity in Visual Cortex2017
Author(s)
Hou X, Yoshioka N, Tsukano H, Sakai A, Miyata S, Watanabe Y, Yanagawa Y, Sakimura K, Takeuchi K, Kitagawa H, Hensch TK, Shibuki K, Igarashi M, Sugiyama S
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Journal Title
Scientific Reports
Volume: 7
Issue: 1
Pages: 12646-12646
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Presentation] Genome-wide Target Analyses of Otx2 Homeoprotein In Postnatal Cortical Interneuron2017
Author(s)
Sakai, A., Nakato, R., Ling, Y., Hou, X., Hara, N., Iijima, T., Yanagawa, Y., Kuwano, R., Okuda, S., Shirahige, K., Sugiyama, S.
Organizer
第40回日本神経科学大会
Related Report