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2023 Fiscal Year Final Research Report

Identification of functional protein phosphorylation state using Phos-tag diagonal electrophoresis and its application to understand metabolic disorders

Research Project

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Project/Area Number 21K21247
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0909:Sports sciences, physical education, health sciences, and related fields
Research InstitutionNiigata University (2022-2023)
Gunma University (2021)

Principal Investigator

Satoh Aoi  新潟大学, 医学部, 技術職員 (10808752)

Project Period (FY) 2021-08-30 – 2024-03-31
KeywordsPhos-tag対角線電気泳動 / 生活習慣病 / リン酸化タンパク質
Outline of Final Research Achievements

Phos-tag electrophoresis requires highly specific antibodies or purification of target proteins to detect specific protein phosphorylation. This study revealed that by using Phos-tag diagonal electrophoresis, proteins can be transferred to a PVDF membrane similar to a regular Western blot, allowing to detect the phosphorylation state of any target protein. This enables the identification of functionally phosphorylated states of specific proteins from a diverse range of cellular and tissue-derived proteins. By focusing on protein phosphorylation states as a new perspective, this technique can be applied to elucidate the pathogenesis of various diseases.

Free Research Field

生活習慣病学

Academic Significance and Societal Importance of the Research Achievements

従来のPhos-tag電気泳動では特異度の高い抗体や任意タンパク質の精製・単一化を必要としていたが、本研究により、Phos-tag対角線電気泳動法を用いて通常のWestern blotと同様にPVDF膜にタンパク質を転写し、任意のタンパク質のリン酸化状態を検出することができることが明らかとなった。このことより、細胞や組織由来の多種多様なタンパク質の中から任意のタンパク質の機能的なリン酸化状態を検出及び同定することが可能となった。この技術を利用し現在、タンパク質のリン酸化状態という新しい視点に着目して肥満や糖尿病といった生活習慣病の病態解明につなげようとしている。

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Published: 2025-01-30  

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