2023 Fiscal Year Final Research Report
Establishment of a biomarker for predicting the efficacy of PD-1 inhibitors focusing on blood metabolites.
Project/Area Number |
21K15373
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 49010:Pathological biochemistry-related
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Research Institution | Osaka University |
Principal Investigator |
hase hiroaki 大阪大学, 大学院薬学研究科, 助教 (80779926)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | がん / バイオマーカー / 免疫チェックポイント / オミックス |
Outline of Final Research Achievements |
To predict the effect of immune checkpoint inhibitors, we analyzed the serum of lung cancer patients prior to administration of the PD-1 inhibitor nivolumab and found that the concentration of lysophosphatidylcholine in particular may be a powerful indicator of nivolumab responsiveness. Since lysophosphatidylcholine has TRPV2 agonist activity, the results showed that the combination administration of probenecid, an existing drug with "TRPV2 agonist action," and anti-PD-1 antibody showed tumor suppression in a mouse model. These results indicate that lysophosphatidylcholine may be used as a biomarker to predict the efficacy of nivolumab and may lead to the development of new treatments to further enhance the efficacy of nivolumab.
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Free Research Field |
オミックス
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Academic Significance and Societal Importance of the Research Achievements |
リゾホスファチジルコリンが免疫チェックポイント阻害剤ニボルマブに対する反応性を示すバイオマーカーとしての可能性を見出したことにより、代謝変容と免疫応答の関連性に新たな視点をもたらした。また、プロベネシドのリポジショニングの可能性を示したことで個別化医療の新たな展開も期待できる。今後、リゾホスファチジルコリンの血中濃度に基づき、患者の治療反応性を事前に評価できるようになれば、効果的な治療法の早期適用により、患者の生存率と生活の質(QOL)の向上が期待でき、医療経済学メリットも期待できるようになる。
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