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2020 Fiscal Year Final Research Report

Control of intracellular amyloid dynamics using photooxygenation catalysts

Research Project

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Project/Area Number 19K22484
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 47:Pharmaceutical sciences and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Sohma Youhei  東京大学, 大学院薬学系研究科(薬学部), グループリーダー(講師相当) (10565518)

Project Period (FY) 2019-06-28 – 2021-03-31
Keywordsアミロイド / 光酸素化触媒 / タウ / α-シヌクレイン
Outline of Final Research Achievements

The purpose of this research is to control the spatiotemporal dynamics of intracellular amyloids such as tau and α-synuclein using photooxygenation catalyst. We synthesized new photooxygenation catalysts that promoted the photooxygenation of tau amyloid with high selectivity and yield. In addition, the induction of new amyloid formation in cultured cells is suppressed by oxygenating tau seed. Similarly, a catalyst capable of efficiently promoting the photooxygenation reaction with respect to the amyloid formed by α-synuclein was identified.

Free Research Field

創薬化学

Academic Significance and Societal Importance of the Research Achievements

今回開発した光酸素化触媒は、細胞内アミロイドに対し、通常のフォールディング状態に影響することなく、疾患に関与するアミロイド凝集体と選択的に反応した。また、本手法を利用することにより、細胞内アミロイドの伝播機構が酸素化修飾によって制御可能であることを示した。本結果は、細胞内アミロイドが原因となる様々な神経変性疾患の病態解明や治療法開発につながる潜在性を有する。

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Published: 2022-01-27  

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