2021 Fiscal Year Final Research Report
Metabolic analysis of ARID1A-deficient gynecologic cancer
Project/Area Number |
20K18176
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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 56040:Obstetrics and gynecology-related
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Research Institution | Jikei University School of Medicine |
Principal Investigator |
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Project Period (FY) |
2020-04-01 – 2022-03-31
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Keywords | 卵巣明細胞癌 / ARID1A / SLC7A11 / グルタチオン |
Outline of Final Research Achievements |
ARID1A encodes the SWI/SNF chromatin remodelling complex; SLC7A11 plays an important role in glutathione metabolism and is critical for cancer growth, progression, metastasis and multidrug resistance. Immunohistochemical analysis was performed on ovarian clear cell carcinomas, endometrial carcinomas and high-grade serous ovarian carcinomas; ARID1A negative rates were 50% in OCCC, 40% in ENOC and 0% in HGSC; among patients with loss of ARID1A expression in OCCC, 67% had loss of SLC7A11 and 25% of patients in ENOC had loss of SLC7A11. This study suggests the involvement of ARID1A-deficient OCCC patients with reduced SLC7A11 expression.
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Free Research Field |
婦人科悪性腫瘍 卵巣癌
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Academic Significance and Societal Importance of the Research Achievements |
卵巣明細胞癌はアジアで発生頻度が高いが、予後不良で治療法が確立されていない。ARID1A変異頻度は、卵巣明細胞癌で50%と報告されている。SLC7A11分子はグルタチオン代謝に重要な役割を果たし、癌の進展に関与する。ARID1A 変異により卵巣明細胞癌細胞がグルタチオン阻害剤に感受性を示すことが明らかになった。今回の研究の結果、卵巣明細胞癌でARID1A発現が消失した患者のうち、SLC7A11が高頻度で消失していた。SLC7A11 の発現が低下している ARID1A 欠損 OCCC 患者の関与を示唆され、ARID1A 欠損型 OCCC は、グルタチオン阻害剤による治療が有効である可能性がある。
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