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2023 Fiscal Year Final Research Report

The examination of therapeutic efficacy of third generation oncolytic HSV-1 for cancer stem cell in oral cancer

Research Project

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Project/Area Number 21K17087
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57060:Surgical dentistry-related
Research InstitutionOsaka University

Principal Investigator

KURIOKA Kyoko  大阪大学, 歯学部附属病院, 医員 (60882363)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywords口腔癌 / がん幹細胞 / ウイルス療法
Outline of Final Research Achievements

It may be difficult to cure some recurred or metastasized cases of oral cancer, and the presence of cancer stem cells has been pointed out as a factor in treatment resistance. In this study, in order to examine the cell cycle and its distribution in cancer stem cells in oral cancer cells, human oral cancer cells introduced with the Fucci system were cultured in suspension to form spheres and observed. In vitro cytopathic effect of T-01, a third generation oncolytic HSV-1 in spheres in SAS-Fucci cells was a concentration-dependent cell-killing effect was observed when observed over time.

Free Research Field

口腔外科学

Academic Significance and Societal Importance of the Research Achievements

口腔癌は外科的療法、放射線療法、がん薬物療法を組み合わせた集学的治療で治療されており、近年では免疫チェックポイント阻害薬が適応となった。しかしながら再発、転移症例では未だに根治治療は困難であり、治療抵抗性を示すことが多い。また患者の高齢化や併存疾患の存在irAE等の重大な有害事象を発症し治療の選択や治療継続が困難となる症例がある。治療抵抗性因子としてがん幹細胞の存在が報告されており、この特性を解明することは非常に有用である。また幹細胞性の強い悪政膠芽腫に対し製剤化された第三世代がん治療用 HSV-1 は有害事象が少なく、口腔癌において低侵襲かつADLを保つことが可能な治療法として期待される。

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Published: 2025-01-30  

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