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2021 Fiscal Year Final Research Report

Development of SLFN11 as a tumor supressor gene

Research Project

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Project/Area Number 19H03505
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionKeio University

Principal Investigator

MURAI Junko  慶應義塾大学, 政策・メディア研究科(藤沢), 特任准教授 (60532603)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywordsがん抑制遺伝子 / 複製 / DNA修復 / DNAダメージ / 複製ストレス / SLFN11 / バイオマーカー
Outline of Final Research Achievements

This project is focused on the SLFN11 gene that drastically increases the sensitivity to DNA-damaging anticancer agents. I and colleagues reported that SLFN 11 alters chromatin structure and enhances gene expression related to immune and stress responses. We found the stage dependent-expression changes of SLFN 11 during differentiation of normal human B lymphocytes, which finding may lead to the discovery of SLFN11 regulators and of anticancer drugs for B cell-derived lymphoma. Because we found a certain oncogenic gene cannot be co-expressed with SLFN11, SLFN11 may function as a tumor-suppressor gene. On the other hand, it is difficult to consider SLFN11 as a simple cancer suppressor gene because the expression of SLFN11 is increased in cancer cells compared to normal cells in many cases.

Free Research Field

分子生物学

Academic Significance and Societal Importance of the Research Achievements

半世紀の間、化学療法の第一線で使用されている白金製剤などのDNA障害型抗がん剤に、いまだ効果予測バイオマーカーが存在しない中、薬剤感受性増強作用を持つSLFN 11はバイオマーカーとして期待されている。本研究成果により、SLFN 11がどのがん種でどの程度の割合で高発現しているのかを明らかにでき、今後どのがん種についてSLFN 11研究を進めていくべきかの道筋が立った。また、SLFN 11の新たな機能や正常細胞での発現制御を明らかにできたことから、抗がん剤のSLFN 11を介した新規作用メカニズムや、抗がん剤の感受性を高める戦略を提唱できた。SLFN 11を標的とする抗がん治療の土台を築いた。

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Published: 2023-01-30  

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