2013 Fiscal Year Final Research Report
Roles of PLEKHG1 in intestinal tumor formation
| Project/Area Number |
23300349
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Tumor biology
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| Research Institution | Aichi Cancer Center Research Institute |
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Principal Investigator |
AOKI MASAHIRO 愛知県がんセンター(研究所), 分子病態学部, 部長 (60362464)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | 大腸がん / がん抑制遺伝子 / 上皮間葉転換 |
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| Research Abstract |
This study aimed to clarify the roles of pleckstrin homology domain containing, family G member 1 (PLEKHG1) gene encoding a member of Dbl-family RhoGEFs, in development and progression of colon cancer. Knockdown of PLEKHG1 in HCT 116 colon cancer cells resulted in increased proliferation rate and decreased cell-cell adhesion in vitro. The Plekhg1 gene knockout in Apc mutant mice, a model for familial adenomatous polyposis (FAP) and the early stage of colon cancer development, resulted in increased number of colonic polyps in the large size class. On the other hand, induction of epithelial-mesenchymal transition (EMT) in colon cancer cells led to a dramatic increase in the PLEKHG1 mRNA level, and forced expression of PLEKHG1 in colon cancer cells resulted in enhanced invasion activity through Matrigel. These results suggest that although PLEKHG may have a tumor suppressor-like function in early stage of colon cancer formation, it may promote invasion at later stages.
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Research Products
(19 results)
