2019 Fiscal Year Final Research Report
Targeting intracellular pathways in relapsed and refractory multiple myeloma
Project/Area Number |
17K09939
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Hematology
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Research Institution | Saitama Medical University |
Principal Investigator |
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Project Period (FY) |
2017-04-01 – 2020-03-31
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Keywords | 多発性骨髄腫 / 難治性 / 細胞回転 / WEE1 / ヒストン脱アセチル化酵素阻害薬 |
Outline of Final Research Achievements |
Although the introduction of novel agents, such as proteasome inhibitors, immunomodulatory drugs has improved the clinical outcomes of the patients with multiple myeloma (MM), most patients eventually relapse and develop drug resistance. Therefore, novel therapeutic approaches to overcome bortezomib (BTZ) resistance are urgently needed. WEE1 is a cell cycle checkpoint kinase and a key regulator of DNA damage surveillance pathways. We have investigated the efficacy of WEE1 inhibitor in various MM cells including BTZ-resistant cells, showing that WEE1 inhibitor induced apoptosis in all MM cells. Moreover, WEE1 inhibitor in combination with HDAC inhibitor induced apoptosis in these cells more effectively than single agent. In conclusion, our data suggest that WEE1 might be a promising molecular target for the treatment of BTZ-resistant MM.
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Free Research Field |
造血器腫瘍
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Academic Significance and Societal Importance of the Research Achievements |
多発性骨髄腫は高齢者に好発する血液のがんであり、社会の高齢化に伴って患者数は増加の一途である。新規薬剤の登場によって治療成績は向上しているものの根治が出来ないため、いずれ治療に対して効果を認めなくなり難治の状態に至る。そのためこのような難治性多発性骨髄腫に対する新たな治療法の開発が急務となっている。我々は、従来の抗がん剤とは作用機序が異なるWEE1阻害薬という分子が難治性の多発性骨髄腫細胞に対して効果を有することを細胞レベルで明らかにした。本研究によって、この分子を使用した治療法が難治性の多発性骨髄腫に対して有効な治療法となりうる可能性が示された。
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