• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2020 Fiscal Year Final Research Report

Analysis of cancer specific signaling cascade by in vivo protein photo-cross-linking approach

Research Project

  • PDF
Project/Area Number 19K22496
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 InstitutionOsaka University

Principal Investigator

DOI Takefumi  大阪大学, 薬学研究科, 教授 (00211409)

Co-Investigator(Kenkyū-buntansha) 樋野 展正  大阪大学, 薬学研究科, 助教 (90469916)
山口 卓男  大阪大学, 薬学研究科, 講師 (80596601)
Project Period (FY) 2019-06-28 – 2021-03-31
Keywordsがんゲノム / 融合型キナーゼ / タンパク質間相互作用 / クロスリンク / 人工アミノ酸
Outline of Final Research Achievements

Most fusion protein kinases, which are generated by cancer genome instability, show abnormal subcellular localization and contribute to malignant transformation of cancer by activating unusual signaling cascades. In this study, we employed unique in vivo protein photo-cross-linking approach to identify proteins that are direct substrates of fused protein kinases and reveal the abnormal signaling pathway. We introduced a photo-cross-linkable amino acid into the substrate recognition region of EGFR kinase and analyzed whether it could capture the substrate by cross-linking, suggesting binding to some endogenous proteins. In parallel, we developed a method to specifically label the proteins captured by the cross-linking to improve the efficiency of substrate identification.

Free Research Field

ケミカルバイオロジー、細胞生物学

Academic Significance and Societal Importance of the Research Achievements

融合型キナーゼにより惹起される異常なシグナルカスケードの解明は、過去20年以上に渡り世界的に取り組まれてきた課題である。本研究では、特定のキナーゼの基質を細胞内における両者の直接的な相互作用をもとに同定するという新規アプローチを提案し、基質の同定効率向上に資する技術開発も行なった。これらを元に、融合型キナーゼの下流カスケードを特異的に明らかにできれば、がん征圧に向けた重要な布石になると考えられる。

URL: 

Published: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi