2006 Fiscal Year Final Research Report Summary
Control of critical period development in mouse somatosensory cortex by glutamatergic signal transduction
Project/Area Number |
17300108
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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 | HOKKAIDO UNIVERSITY |
Principal Investigator |
WATANABE Masahiko Hokkaido Univ., Graduate School of Medicine, Prof, 大学院医学研究科, 教授 (70210945)
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Project Period (FY) |
2005 – 2006
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Keywords | glutamate / receptor / barrel / plasticity / critical period |
Research Abstract |
In the present study, I studied on the molecular mechanisms regulating critical period development of the mouse somatosensory cortex using gene knockout mice. In particular, I focused on the roles played by NMDA-type glutamate receptor subunits GluRe2 (NR2B) and GLuRe4 (NR2D) and also by glutamate transporter GLAST and GLT1 in developmental appearance, critical period termination, critical period plasticity of somatosensory barrel structures. Here I found that, compared to wild-type control mice, heterozygous GlnRe2+/-mice showed one-day retardation in developmental appearance and critical period termination, whereas homozygous GluRe4-/-mice did on-day facilitation. No significant change was seen in the magnitude of critical period plasticity, as determined by row-C whisker cautery. In contrast, homozygous GLAST-/-and GLTI-/-mice displayed significant reduction in the magnitude of critical period plasticity, with normal developmental appearance and critical period termination. These results provide experimental evidence that N3IDA receptor activation regulates temporal properties of somatosensory development in a subunit-dependent manner, while transporters regulating extracellular glutamate concentration magnify critical period plasticity. Therefore, armed with the two mechanisms, synaptic refinement during development is shaped normally in a activity-dependent manner.
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Research Products
(71 results)
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[Journal Article] Impaired cerebellar functions in mutant mice lacking DNER.2006
Author(s)
Tohgo A, Eiraku M, Miyazaki T, Miura E, Ono K, Kawaguchi S, Nishi M, Watanabe M, Hirano T, Kengaku M, Takeshima H
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Journal Title
Mol. Cell. Neurosci. 31
Pages: 326-333
Description
「研究成果報告書概要(和文)」より
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[Journal Article] NR2B tyrosine phosphorylation modulates fear learning as well as amygdaloid synaptic plasticity.2006
Author(s)
Nakazawa T, Komai S, Watabe AM, Kiyama Y, Fukaya M, Arima-Yoshida F, Horai R, Sudo K, Ebine K, Delawary M, Goto J, Umemori H, Tezuka T, Iwakura Y, Watanabe M, Yamamoto T, Manabe T
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Journal Title
EMBO J. 25
Pages: 2867-2877
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Functional uncoupling between Ca^<2+> release and afterhyperpolarization in mutant hippocampal neurons lacking junctophilins.2006
Author(s)
Moriguchi S, Nishi M, Komazaki S, Sakagami H, Miyazaki T, Masumiya H, Saito S, Watanabe M, Kondo H, Yawo H, Fukunaga K, Takeshima H
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Journal Title
Proc. Natl. Acad. Sci. USA 103
Pages: 10811-10816
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Abundant distribution of TARP γ-8 in synaptic and extrasynaptic surface of hippocampal neurons and its major role in AMPA receptor expression on spines and dendrites.2006
Author(s)
Fukaya M, Tsujita M, Yamazaki M, Kushiya E, Abe M, Akashi K, Natsume R, Kano M, Kamiya H, Watanabe M, Sakimura K (Corresponding author)
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Journal Title
Eur. J. Neurosci. 24
Pages: 2177-2190
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Indispensability of glutamate transporter GLAST and GLT1 to brain development.2006
Author(s)
Matsugami TR, Tanemura K, Mieda M, Nakatomi R, Yamada K, Kondo K, Ogawa M, Obata K, Watanabe M, Hashikawa T, Tanaka K
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Journal Title
Proc. Natl. Acad. Sci. USA 103
Pages: 12161-12166
Description
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[Journal Article] Abundant distribution of TARP γ-8 in synaptic and extrasynaptic surface of hippocampal neurons and its major role in AMPA receptor expression on spines and dendrites.2006
Author(s)
Fukaya M, Tsujita M, Yamazaki M, Kushiya E, Abe M, Akashi K, Natsume R, Kano M, Kamiya H, Watanabe M, Sakimura K
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Journal Title
Eur. J. Neurosci. 24
Pages: 2177-2190
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Ptfla, a bHLH transcriptional gene, defines GABAergic neuronal fates in cerebellum.2005
Author(s)
Hoshino M, Nakamura S, Mori K, Kawauchi T, Terao M, Nishimura YV, Fukuda A, Fuse T, Matsuo N, Sone M, Watanabe M, Bito H, Terashima T, Wright CVE, Kawaguchi Y, Nakao K, Nabeshima Y
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Description
「研究成果報告書概要(和文)」より
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[Journal Article] Autoantibodies and cell-mediated autoimmunity to NMDA-type GluTε2 in patients with Rasmussen's encephalitis and chronic progressive epilepsia partialis continua.2005
Author(s)
Takahashi Y, Mori H, Mishina M, Watanabe M, Kondo N, Shomomura J, Kubota Y, Matsuda K, Fukushima K, Shiroma M, Akasaka N, Nishida H, Imamura A, Watanabe H, Sugiyama N, Ikezawa M, Fujiwara T
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Journal Title
Epilepsia 46
Pages: 152-158
Description
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[Journal Article] Fyn kinase-mediated phosphorylation of NMDA receptor NR2B subunit at Tyr1472 is essential for maintenance of neuropathic pain.2005
Author(s)
Abe T, Matsumura S, Katano T, Mabuchi T, Takagi K, Xu L, Yamamoto A, Hattori K, Yagi T, Watanabe M, Nakazawa T, Yamamoto T, Mishina M, Nakai Y, Ito S
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Journal Title
Eur. J Neurosci. 22
Pages: 1445-1455
Description
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[Journal Article] Complementary roles of cholecystokinin and parvalbumin expressing GABAergic neurons in hippocampal network oscillations.2005
Author(s)
Klausberger T, Marton LF, O'Neill J, Huck JHJ, Dalezios Y, Fuentealba P, Suen W-Y, Papp E, Kaneko T, Watanabe M, Csicsvari J, Somogyi P
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Journal Title
J. Neurosci. 25
Pages: 9782-9793
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Clbn1 is essential for synaptic integrity and information processing in the cerebellum.2005
Author(s)
Hirai H, Pang Z, Bao D, Miyazaki T, Li L, Miura E, Parris J, Rong Y, Watanabe M, Yuzaki M, Morgan JI
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Journal Title
Nature Neurosci. 8
Pages: 1534-1541
Description
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[Journal Article] Ptf1a, a bHLH transcriptional gene, defines GABAergic neuronal fates in cerebellum.2005
Author(s)
Hoshino M, Nakamura S, Mori K, Kawauchi T, Terao M, Nishimura YV, Fukuda A, Fuse T, Matsuo N, Sone M, Watanabe M, Bito H, Terashima T, Wright CVE, Kawaguchi Y, Nakao K, Nabeshima Y
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Description
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