2023 Fiscal Year Final Research Report
Sulfur metabolism of colon cancer
Project/Area Number |
21K16482
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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 55020:Digestive surgery-related
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Research Institution | Yokohama City University |
Principal Investigator |
OZAWA Mayumi 横浜市立大学, 附属病院, 助教 (20806393)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | 硫黄呼吸 / 大腸癌 / 硫黄関連代謝物 |
Outline of Final Research Achievements |
Since sulfur respiration may be enhanced in cancer cells, we measured sulfur metabolites in cells overexpressing enzymes related to sulfur respiration (SQR and CARS2) and determined HSS-Cys and hydrogen sulfide dynamics. We compared sulfur metabolites in cancerous and noncancerous parts of the human body to obtain a clearer picture of sulfur metabolite kinetics, since the ability to metabolize sulfur in cancerous cells may be different from that in normal tissues and may be related to the growth rate of cancer cells. The results confirmed that the observed levels of the sulfur respiration-related metabolites, cysteine and a derivative of cysteine persulfide, were elevated in cancerous tissues compared to normal tissues.
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Free Research Field |
大腸癌
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Academic Significance and Societal Importance of the Research Achievements |
癌組織においては通常の組織と異なる硫黄代謝能力が癌細胞の成長速度と関連している可能性が示唆された。ただし腫瘍の中心部の代謝物は正常粘膜組織と有意な差異が認められなかったなど解明しきれなかった点も多い.本研究者としては今後,腫瘍のもつ不均一性を考慮し,分裂能の高い癌細胞において更に硫黄呼吸経路を解明する必要があると判断し継続的な研究を予定している。この経路が解明されることで,成長速度のコントロールする新規薬剤開発の可能性,また発癌を早期に発見する予防学的研究に繋げられる可能性が高いと考えられる。
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