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2021 Fiscal Year Final Research Report

Identification and treatment of targets that cause beta cell death by Wolfram Syndrome

Research Project

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Project/Area Number 18K08517
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54040:Metabolism and endocrinology-related
Research InstitutionYamaguchi University

Principal Investigator

Taguchi Akihiko  山口大学, 大学院医学系研究科, 助教 (20634744)

Project Period (FY) 2018-04-01 – 2022-03-31
Keywords小胞体ストレス / Wolfram症候群 / 糖尿病
Outline of Final Research Achievements

Wolfram syndrome (WFS) is a very rare disease characterized by juvenile-onset insulin-dependent diabetes mellitus and optic atrophy, and there is still no established treatment. Our group was first to identify the causative gene (WFS1). Since then, research on WFS has been conducted both in Japan and overseas, but the fundamental mechanism leading to a cure has yet to be elucidated. In this study, we focused on ATP2A2 as the mechanism by which WFS causes decreased insulin secretion, and found that ATPA2a2 activators had an insulin-promoting effect in mice with decreased insulin secretion.

Free Research Field

代謝学、免疫学

Academic Significance and Societal Importance of the Research Achievements

現在までWFSは根本的な治療法のない、難病である。WFSは細胞に小胞体ストレスという負荷がかかることで細胞死に至ると言われている。
今回同定したATP2A2活性化薬は、他施設では小胞体ストレスを改善する作用も報告されており、ATP2A2活性化薬はWFSのインスリン分泌作用のみならず、WFSの他の症状である視神経萎縮、難聴、精神障害などにも効果を発揮する可能性が期待できる。
WFS1遺伝子の変異・多型は、一般的な2型糖尿病でも検出されるものであり、WFSの治療が可能になれば、2型糖尿病への新たな治療法にもなりうる研究となった。

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Published: 2023-01-30  

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