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2022 Fiscal Year Final Research Report

Identification of resistance factors and development of novel strategy to overcome resistance in treatment-resistant chronic myeloid leukemia

Research Project

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Project/Area Number 20K07145
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47060:Clinical pharmacy-related
Research InstitutionKindai University

Principal Investigator

NISHIDA Shozo  近畿大学, 薬学部, 教授 (40208187)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywords慢性骨髄性白血病 / BCR-ABL1阻害薬
Outline of Final Research Achievements

We established BCR-ABL1 inhibitor-resistant cells in human chronic myeloid leukemia cells, analyzed the mechanism of resistance acquisition, and found that activation of the bypass signaling pathway is involved. Furthermore, we found that BCR-ABL1 inhibitor resistance can be overcome by molecularly targeted drugs that inhibit this bypass pathway. These results may contribute to the clinical treatment of BCR-ABL1 inhibitor-resistant chronic myeloid leukemia when it emerges. The results of this study are summarized in the main publications section.

Free Research Field

薬物治療学

Academic Significance and Societal Importance of the Research Achievements

慢性骨髄性白血病の治療には、BCR-ABL1阻害薬が用いられるが、約30%の患者で耐性や生じ、治療が困難となる。この耐性の原因はBCR-ABL1の点変異と点変異以外に分類され、点変異に対しては治療薬の開発が進んでいるが、点変異以外の原因については不明な点が多いことから有効な治療法が存在しない。本成果において、慢性骨髄性白血病におけるBCR-ABL1阻害薬耐性にバイパス経路活性化によるERK1/2活性化が耐性の要因であることを見出し、この阻害により耐性が克服されることを明らかにした。これらの結果により、BCR-ABL1阻害薬耐性患者の生命予後の改善に貢献できると考えている。

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Published: 2024-01-30  

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