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2022 Fiscal Year Final Research Report

Elucidation of the pathological mechanism of schizophrenia using synaptic function analysis with disease-specific induced pluripotent stem cell (iPSC)-derived neurons

Research Project

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Project/Area Number 20K07057
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionOsaka Medical and Pharmaceutical University

Principal Investigator

KURIU TOSHIHIKO  大阪医科薬科大学, 医学部, 特別職務担当教員(講師) (10401374)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywords電気生理 / シナプス / 統合失調症 / iPS細胞 / 神経細胞 / 分子イメージング
Outline of Final Research Achievements

To elucidate the pathological mechanisms of schizophrenia, we analyzed the synaptic function of diseased iPS differentiated neurons obtained from schizophrenia patients. Using electrophysiological techniques, we found that the amplitude and frequency of small postsynaptic currents (mEPSCs) were abnormal in diseased iPS differentiated neurons compared to iPS differentiated neurons derived from healthy individuals. Interestingly, they found that the amplitude and frequency of mEPSCs were enhanced in patients with multiple schizophrenia families, whereas they were reduced in patients with 3q29 microdeletion syndrome. These results suggest that functional abnormalities occur at the synaptic level in patients with schizophrenia.

Free Research Field

神経生理学

Academic Significance and Societal Importance of the Research Achievements

本研究では、遺伝的背景および臨床情報が明らかな統合失調症患者由来の疾患iPS分化神経細胞を用いて、シナプス機能解析を行った。結果は、統合失調症患者においてシナプスレベルで機能異常が生じていることを示唆しているが、統合失調症であっても、患者の遺伝的背景が異なる場合には、異なったシナプス機能異常が起こっていることが明らかとなった。今後、さらに自閉症等も含めた他の患者群のシナプス機能を調べることにより、精神疾患全般の解明に繋がることが期待される。また、本実験系は培養系を用いるため、将来的に統合失調症の創薬研究におけるスクリーニング系としての活用に繋げていきたいと考えている。

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Published: 2024-01-30  

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