2023 Fiscal Year Final Research Report
Establishment of personalized medicine for the dramatic improvement in the prognosis of pancreatic cancer patients
Project/Area Number |
21H03000
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Review Section |
Basic Section 55020:Digestive surgery-related
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Research Institution | Osaka University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
石井 秀始 大阪大学, 大学院医学系研究科, 招へい教授 (10280736)
小林 省吾 大阪大学, 大学院医学系研究科, 准教授 (30452436)
野田 剛広 大阪大学, 医学部附属病院, 講師 (50528594)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | miRNA / 膵癌 / 薬剤感受性 / 放射線感受性 |
Outline of Final Research Achievements |
We classified pancreatic cancer resection patients who underwent gemcitabine-based preoperative treatment into two groups, good response group and poor response group, and used miRNAs extracted from peripheral blood exosomes collected before preoperative treatment to identify miRNAs associated with treatment response using miRNA microarrays and machine learning. We found that the best combination was to use six miRNAs for selection of the good response group and three miRNAs for selection of the poor response group. In addition, miRNAs involved in radiotherapy resistance of pancreatic cancer were separately identified and proved to be applicable to the prediction of radiotherapy sensitivity. These findings suggest that prediction of treatment efficacy and improvement of treatment efficacy using miRNAs are feasible in clinical practice.
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Free Research Field |
消化器外科
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Academic Significance and Societal Importance of the Research Achievements |
癌細胞が抗癌剤耐性を獲得することは大きな問題であり、エピジェネティックな変化がその耐性機序に関係することを証明できたことの意義は大きい。本研究では、癌ゲノム診断(遺伝子パネル検査)では検出不可能な、癌細胞のエピジェネティックな変化をmiRNAの観点から明らかにし、さらには治療効果を予測しうる具体的方法を確立したことにより、実臨床での活用が大いに期待される。さらには放射線治療の感受性を予測するための方策として、キーとなるmiRNAを同定し得たことは、放射線治療をすべき患者さんの同定や、さらには放射線治療の効果増強にも応用可能であり、臨床的意義も大きい。
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