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2023 Fiscal Year Final Research Report

Study on the Novel Cellular Regulatory Mechanism with LUBAC as a Scaffold and Its Application to Disease Therapy

Research Project

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Project/Area Number 21K06873
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionOsaka Metropolitan University (2022-2023)
Osaka City University (2021)

Principal Investigator

Oikawa Daisuke  大阪公立大学, 大学院医学研究科, 准教授 (20455330)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywordsユビキチン修飾 / 炎症応答 / 細胞死 / 活性酸素 / 炎症性腸疾患(IBD)
Outline of Final Research Achievements

Recently, linear ubiquitin chains have attracted attention as new regulators of NF-kB signaling and cell death. In this study, we identified OTUD1 as a deubiquitinating enzyme (DUB) that antagonizes NF-kB activation by LUBAC, and found that in OTUD1-KO cells, NF-kB activation, RIPK1-independent apoptosis (RIA), and reactive oxygen species (ROS)-induced cell death (Oxeiptosis) were enhanced. These dysregulations may contribute to the development of inflammatory bowel disease (IBD).

Free Research Field

病態医化学

Academic Significance and Societal Importance of the Research Achievements

細胞内で直鎖状ユビキチン鎖を産生する唯一のユビキチンリガーゼであるLUBACの機能破綻は、様々な疾患の発症と密接に関連する事が数多く報告されている。本研究で新たな関連因子として見出したOTUD1は、炎症応答に加え各種細胞死を抑制することから、本研究で見出した炎症性腸疾患(IBD)以外にも、様々な疾患と関連することが想定される。今後、これらの可能性についても検討し、疾患に対する新たな創薬標的としての医療応用を期待したい。

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Published: 2025-01-30  

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