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2021 Fiscal Year Final Research Report

Elucidation of the mechanism of dystonia development using animal model and attempts to restore the symptoms

Research Project

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Project/Area Number 18H02592
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 48010:Anatomy-related
Research InstitutionNiigata University

Principal Investigator

Takebayashi Hirohide  新潟大学, 医歯学系, 教授 (60353439)

Co-Investigator(Kenkyū-buntansha) 佐野 裕美  生理学研究所, システム脳科学研究領域, 助教 (00363755)
黒瀬 雅之  岩手医科大学, 歯学部, 教授 (40397162)
Project Period (FY) 2018-04-01 – 2021-03-31
Keywords不随意運動 / Dst-b / 遺伝性感覚性自律神経性ニューロパチー / 筋原線維性ミオパチー(MFM)
Outline of Final Research Achievements

In this study, we generated genetically engineered mice specific for the muscle-type dystonin gene (Dst-b), which results in late-onset myofibrillary myopathy. These results suggest the existence of an unidentified inherited muscle disease.
We further investigated the neural factors in dystonin mutant mice by generating conditional knockout and conditional rescue mice. The results revealed that dystonin expression in peripheral nervous system plays an important role in sensory neuron degeneration and the appearance of motor symptoms.

Free Research Field

神経化学、神経解剖学

Academic Significance and Societal Importance of the Research Achievements

ヒトのジストニン遺伝子の変異により、遺伝性感覚性自律神経性ニューロパチーVI型(HSAN6)が発症することが知られており、ジストニン変異マウスはHSAN6の良いモデル動物である。従って、本研究で得られた成果は、遺伝性神経疾患HSAN6の治療法開発の基盤となる。また、筋肉型ジストニン(DST-b)の変異により筋原線維性ミオパチーなどの病態を示す患者が将来見出されて、新たなヒト遺伝病の同定につながる可能性がある。

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Published: 2023-01-30  

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