Investigation of role of serotonergic neurons in regulation of masseter muscle activity using optogenetics
Project/Area Number |
17H04373
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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 |
Functional basic dentistry
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Research Institution | Showa University |
Principal Investigator |
Inoue Tomio 昭和大学, 歯学部, 教授 (70184760)
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Co-Investigator(Kenkyū-buntansha) |
中山 希世美 昭和大学, 歯学部, 講師 (00433798)
望月 文子 昭和大学, 歯学部, 講師 (10453648)
田中 謙二 慶應義塾大学, 医学部(信濃町), 准教授 (30329700)
中村 史朗 昭和大学, 歯学部, 准教授 (60384187)
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Project Period (FY) |
2017-04-01 – 2020-03-31
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Project Status |
Completed (Fiscal Year 2019)
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Budget Amount *help |
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2017: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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Keywords | セロトニン / 咀嚼 / 光遺伝学 / 三叉神経運動ニューロン / 樹状突起 / 5-HT2A受容体 / GluN2Aサブユニット / 5-HT1B受容体 / プレモーターニューロン / 除脳ラット動脈灌流標本 / 顎舌骨筋神経 / 舌下神経 / セロトニン神経系 / ブラキシズム / Srcキナーゼ / 除脳動物動脈灌流標本 |
Outline of Final Research Achievements |
Various motor behaviors are modulated by serotonin (5-HT). While it is known that both the trigeminal motor nucleus and mesencephalic trigeminal nucleus (MesV) receive serotonergic inputs, it remains unclear how 5-HT affects jaw movement. We examined the effects of 5-HT on masseter (jaw-closing) motoneurons (MMNs) in Wistar rat brainstem slice preparations using a whole-cell recording technique. Activation of 5-HT2A receptors enhanced the function of NMDARs in MMN dendrites and presynaptic 5-HT1B receptors were shown to be involved in inhibition of excitatory synaptic inputs from MesV afferents to MMNs. Our results indicate that optogenetic activation of serotonergic neurons during mastication may promote masticatory movements.
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Academic Significance and Societal Importance of the Research Achievements |
本研究の特色は、セロトニンが神経細胞に対してどのような役割があるのかを解析したうえで、セロトニン神経特異的に活動を制御することができる光操作技術を、私たちが開発した独自の実験モデルに適用することで、セロトニンの役割を細胞レベルから個体レベルまで解析する点にある。本研究結果から、セロトニン神経系による咀嚼筋活動調節の詳細が明らかになり、さらには、セロトニン神経系の活動を特異的に操作することで、咀嚼の機能低下の治療やブラキシズムの治療につながれば、社会的意義は非常に大きいと考えられる。
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Report
(4 results)
Research Products
(66 results)
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[Journal Article] Nanomechanical characterization of time-dependent deformation/recovery on human dentin caused by radiation-induced glycation2019
Author(s)
Tobe T, Shibata Y, Mochizuki A, Shimomura N, Zhou J, Wurihan, Tanaka R, Ikeda S, Zhang Z, Li Q, Inoue T, Miyazaki T
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Journal Title
J Mech Behav Biomed Mater
Volume: 90
Pages: 248-255
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Generation of orthotopically functional salivary gland from embryonic stem cells2018
Author(s)
Tanaka Junichi、Ogawa Miho、Hojo Hironori、Kawashima Yusuke、Mabuchi Yo、Hata Kenji、Nakamura Shiro、Yasuhara Rika、Takamatsu Koki、Irie Tarou、Fukada Toshiyuki、Sakai Takayoshi、Inoue Tomio、Nishimura Riko、Ohara Osamu、Saito Ichiro、Ohba Shinsuke、Tsuji Takashi、Mishima Kenji
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Journal Title
Nature Communications
Volume: 9
Issue: 1
Pages: 4216-4216
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Distinctive features of Phox2b-expressing neurons in the rat reticular formation dorsal to the trigeminal motor nucleus2017
Author(s)
Nagoya K, Nakamura S, Ikeda K, Onimaru H, Yoshida A, Nakayama K, Mochizuki A, Kiyomoto M, Satoh F, Kawakami H, Takahashi K, Inoue T.
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Journal Title
Neuroscience
Volume: 358
Pages: 211-226
DOI
Related Report
Peer Reviewed
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[Journal Article] Central neural mechanisms involved in the control of jaw movement during postnatal development2017
Author(s)
Nakamura S, Nagata S, Nonaka M, Nishimura A, Nagoya K, Dantsuji M, Nakayama K, Mochizuki A, Iijima T, Ozeki M, Yamamoto M, Inoue T
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Journal Title
Showa Univ J Med Sci
Volume: 29(3)
Pages: 221-229
NAID
Related Report
Peer Reviewed
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[Presentation] Electrophysiological recordings of neurons derived from sleep bruxism patient-specific iPSCs.2019
Author(s)
Nakai K, Shiga T, Abe Y, Hoashi Y, Nakamura S, Yasuhara R, Matsumoto T, Avijite KS, Kotani K, Mishima K, Inoue T, Akamatsu W, Baba K.
Organizer
ISSCR Annual Meeting
Related Report
Int'l Joint Research
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[Presentation] Patch-clamp recordings of neurons induced from sleep bruxism patient specific iPSCs.2019
Author(s)
Nakai K, Hoashi Y, Abe Y, Nakamura S, Siga T, Avijite KS, Yasuhara R, Matsumoto T, Kotani K, Inoue T, Mishima K, Akamatsu W, Baba K.
Organizer
97th general session & exhibition of the IADR
Related Report
Int'l Joint Research
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[Presentation] Distinctive properties of Phox2b neurons located in the rat reticular formation dorsal to the trigeminal motor nucleus2017
Author(s)
Nagoya K, Nakamura S, Ikeda K, Onimaru H, Nakayama K, Mochizuki A, Sato F, Yoshida A, Kawakami K, Inoue M, Inoue T.
Organizer
Society for Neuroscience 47th annual meeting
Related Report
Int'l Joint Research
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