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2021 Fiscal Year Final Research Report

Towards personalized treatment of diffuse gliomas based on molecular classification

Research Project

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Project/Area Number 19K09490
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56010:Neurosurgery-related
Research InstitutionKeio University

Principal Investigator

Sasaki Hikaru  慶應義塾大学, 医学部(信濃町), 講師 (70245512)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywordsグリオーマ / 神経膠腫 / 化学療法 / 幹細胞 / マクロファージ / 乏突起膠腫 / 1p/19q
Outline of Final Research Achievements

1) Analyses of 15 paired lower grade gliomas before and after alkylating agent-chemotherapy showed that glioma stem cell ratio and M2 macrophage increased in the post-chemotherapy specimens, suggesting that those are likely to be associated with resistance to chemotherapy and recurrence of tumor.
2) Analyses of oligodendroglial histological phenotype in association with patient survival in 93 lower grade gliomas showed that oligodendroglial histological diagnosis did not independently predict patient prognoses in any of the 3 IDH-1p19q based molecular groups.
3) Hierarchical clustering of 143 gliomas based on the data on 540 chromosomal locus by comparative genomic hybridization was performed. The results were being analyzed.

Free Research Field

脳腫瘍

Academic Significance and Societal Importance of the Research Achievements

乏突起膠腫は化学療法に対する反応性が比較的高いが、必ず再発し、ほとんどの患者が死に至る。同腫瘍における化学療法耐性メカニズム、再発のメカニズムの一部を解明したことにより、新たな治療法の開発や患者予後の改善が期待される。
形態学的な乏突起膠腫の診断・特徴は、それ自体が予後因子である可能性について、長く議論されてきた。今回、形態学的乏突起膠腫は独立した予後因子でないことが改めて示され、一方で、分子診断の重要性が再確認された。グリオーマにおける染色体コピー数異常に基づく階層クラスタリング解析の報告は、我々の知る限り認められず、その結果が興味深く待たれる。

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Published: 2023-01-30  

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