2017 Fiscal Year Final Research Report
Stress response of cancer cells and its research for intractable cancer therapy
| Project/Area Number |
15K08300
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Pathological medical chemistry
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
KAWAUCHI Junya 東京医科歯科大学, 難治疾患研究所, 助教 (20544498)
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| Research Collaborator |
INOUE Makoto 東京医科歯科大学, 医歯学総合大学院, 大学院生
EDAGAWA Makoto 九州大学, 医学研究院, 大学院生
UCHIDA Yohei 東京医科歯科大学, 難治疾患研究所, 研究補助員
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 難治がん / ストレス応答 / Wnt / p53 / ATF3 / がん遊走浸潤 |
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| Outline of Final Research Achievements |
Aberrant signaling of Wnt pathway and p53 inactivation is one of major genetic hallmarks of human colorectal cancer. At the same time, stress response to DNA damage is deeply involved in susceptibility of cancer cells to DNA damage. In this study, we performed system analysis of DNA damage response of double knockout MEF of p53 and stress response gene ATF3, and clearly identified gene clusters of p53 targets positively or negatively regulated by ATF3. We further showed that ATF3 gene contains atypical TCF4 binding motif at its very proximal promoter and is a direct target of b-catenin binding in human HCT116 colorectal cancer cells. Using genetically hemi-targeted HCT116 cells with wild or mutant b-catenin allele, we demonstrated that ATF3 plays role of suppressing cancer cell invasion and migration. ATF3 could be a target for chemotherapy and prevention of human colon cancer.
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| Free Research Field |
遺伝子発現、ゲノム医学
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