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2019 Fiscal Year Final Research Report

The molecular mechanism of Hox gene regulation by leukemic fusion proteins

Research Project

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Project/Area Number 17H03679
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Cell biology
Research InstitutionNational Institutes of Biomedical Innovation, Health and Nutrition

Principal Investigator

Oka Masahiro  国立研究開発法人医薬基盤・健康・栄養研究所, 医薬基盤研究所 細胞核輸送ダイナミクスプロジェクト, プロジェクトリーダー (40432504)

Project Period (FY) 2017-04-01 – 2020-03-31
KeywordsCRM1 / ヌクレオポリン / 白血病 / HOX
Outline of Final Research Achievements

The molecular mechanism of abnormal HOX (homeobox) gene expression in acute leukemia remains largely elusive. In this study, we found that leukemia-related proteins such as nucleoporin fusion proteins and mutant NPM1 are recruited to HOX cluster regions through their interaction with a nuclear export factor, CRM1, in human leukemia cell lines. Furthermore, our results showed that the transcriptional activation of HOX genes occurs in a CRM1-dependent manner in these cells.

Free Research Field

細胞生物学

Academic Significance and Societal Importance of the Research Achievements

近年、核―細胞質間分子輸送機構の異常と病態との関連が明らかになりつつある。本研究によって、核から細胞質への分子輸送に必須の核外輸送因子CRM1と核膜孔構成因子(ヌクレオポリン)との相互作用や、CRM1と核外移行シグナルとの相互作用が、白血病でみられるHOX遺伝子の発現異常にも深く関わっていることが明らかとなった。今後の新規治療薬の開発にもつながる成果であると考えられる。

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Published: 2021-02-19  

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