Neuronal specification and differentiation in the cerebellum
Project/Area Number |
15H04268
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Nerve anatomy/Neuropathology
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Research Institution | National Center of Neurology and Psychiatry |
Principal Investigator |
Hoshino Mikio 国立研究開発法人国立精神・神経医療研究センター, 神経研究所 病態生化学研究部, 部長 (70301273)
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Research Collaborator |
OWA tomoo
MIYASHITA satoshi
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Project Period (FY) |
2015-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2018)
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Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2017: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2016: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2015: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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Keywords | 小脳 / 転写因子 / 発生 / 神経科学 / 発生・分化 / 解剖学 / 脳・神経 / 遺伝学 |
Outline of Final Research Achievements |
Cerebellar granule cell precursors (GCPs) and granule cells (GCs) represent good models to study neuronal development. We found that Meis1 is expressed in granule cell lineage cells and astrocytes in the cerebellum during development. Targeted disruption of the Meis1 gene specifically in the GC lineage resulted in smaller cerebella with disorganized lobules. Knockdown/knockout experiments for Meis1 as well as in vitro assays show that Meis1 binds to an upstream sequence of Pax6 to enhance its transcription in GCPs/GCs. Furthermore, we found that the Meis1-Pax6 pathway increases the expression of Smad proteins to upregulate BMP signaling, leading to degradation of Atoh1 in the inner EGL, which contributes to differentiation from GCPs to GCs. Thus, this work reveals multiple functions of Meis1 in GC development and gives insights into the general understanding of the molecular machinery underlying neural differentiation from neural progenitors.
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Academic Significance and Societal Importance of the Research Achievements |
今回の知見により、これまで個別に明らかにされてきた小脳顆粒細胞の発生の分子機構を、MEIS1というハブによって統合的に理解することが可能となった。これは小脳にとどまらず、様々な脳部位での神経前駆細胞から神経細胞が生み出されるしくみの理解につながると考えられる。また、MEIS1は一部の髄芽腫において異常に強く発現しており、髄芽腫の発症に関与している可能性も考えられるために、今回の研究成果は広く今後の小脳癌研究の発展に寄与すると考えられる。
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Report
(4 results)
Research Products
(28 results)
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[Journal Article] Forebrain Ptf1a Is Required for Sexual Differentiation of the Brain2018
Author(s)
Fujiyama Tomoyuki、Miyashita Satoshi、Tsuneoka Yousuke、Kanemaru Kazumasa、Kakizaki Miyo、Kanno Satomi、Ishikawa Yukiko、Yamashita Mariko、Owa Tomoo、Nagaoka Mai、Kawaguchi Yoshiya、Yanagawa Yuchio、Magnuson Mark A.、Muratani Masafumi、Shibuya Akira、Nabeshima Yo-ichi、Yanagisawa Masashi、Funato Hiromasa、Hoshino Mikio
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Journal Title
Cell Reports
Volume: 24
Issue: 1
Pages: 79-94
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Deficiency of AMPAR?Palmitoylation Aggravates Seizure Susceptibility2018
Author(s)
Itoh Masayuki、Yamashita Mariko、Kaneko Masaki、Okuno Hiroyuki、Abe Manabu、Yamazaki Maya、Natsume Rie、Yamada Daisuke、Kaizuka Toshie、Suwa Reiko、Sakimura Kenji、Sekiguchi Masayuki、Wada Keiji、Hoshino Mikio、Mishina Masayoshi、Hayashi Takashi
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Journal Title
The Journal of Neuroscience
Volume: 38
Issue: 47
Pages: 10220-10235
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Pathologic Active mTOR Mutation in Brain Malformation with Intractable Epilepsy Leads to Cell-Autonomous Migration Delay2017
Author(s)
Hanai S, Sukigara S, Dai H, Owa T, Horike SI, Otsuki T, Saito T, Nakagawa E, Ikegaya N, Kaido T, Sato N, Takahashi A, Sugai K, Saito Y, Sasaki M, Hoshino M, Goto YI, Koizumi S, Itoh M
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Journal Title
The American Journal of Pathology
Volume: 187
Issue: 5
Pages: 1177-1185
DOI
Related Report
Peer Reviewed
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[Journal Article] Origins of oligodendrocytes in the cerebellum, whose development is controlled by the transcription factor, Sox92016
Author(s)
Hashimoto R, Hori K, Owa T, Miyashita S, Dewa K, Masuyama N, Sakai K, Hayase Y, Seto Y, Inoue YU, Inoue T, Ichinohe N, Kawaguchi Y, Akiyama H, Koizumi S, Hoshino M
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Journal Title
Mech Dev
Volume: 140
Pages: 25-40
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] Loss of Auts2 induces the defects of synaptic function and cognitive brain functions2018
Author(s)
Hori K, Nagai T, Shan W, Yamad M, Shiraishi R, Sakamoto A, Kanno K, Abe M, Yamada K, Sakimura K, Hoshino M
Organizer
新学術領域個性創発脳第1回国際シンポジウム
Related Report
Int'l Joint Research / Invited
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[Presentation] Cytoplasmic function of AUTS2 in neural network formation2015
Author(s)
Hoshino M, Nagai T, Shen W, Sakamoto A, Taya S, Hashimoto R, Hayashi T, Abe M, Yamazaki M, Nakao K, Nishioka T, Sakimura K, Yamada K, Kaibuchi K, Hori K
Organizer
Society for Neuroscience 45th annual meeting
Place of Presentation
McCormick Place, Chicago, IL, USA
Year and Date
2015-10-17
Related Report
Int'l Joint Research
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