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Updated: Jul 19, 2026
09:58
RhoC GTPase Activation Assay
Published on: August 22, 2010
The activation of TC10, a Rho small GTPase, contributes to v-Rel-mediated transformation
1Section of Molecular Genetics and Microbiology and the Institute of Cellular and Molecular Biology, University of Texas at Austin, Austin, TX 78712-1095, USA.
Oncogene
|October 4, 2006
Summary
The oncogenic transcription factor v-Rel increases TC10 Rho GTPase expression, promoting cell transformation. Elevated TC10 activity alone can induce in vitro transformation of primary cells.
Area of Science:
- Oncology
- Cell Biology
- Molecular Biology
Background:
- v-Rel, an oncogenic transcription factor from the Rel/NF-kappaB family, induces cellular transformation.
- Understanding genes regulated by v-Rel is crucial for deciphering its oncogenic mechanisms.
Purpose of the Study:
- To identify genes with altered expression in v-Rel-transformed cells.
- To investigate the role of TC10, a Rho GTPase, in v-Rel-mediated cell transformation.
Main Methods:
- Differential display was used to identify differentially expressed genes.
- Expression levels of TC10 were analyzed at RNA and protein levels.
- Functional assays involved dominant-negative and gain-of-function TC10 mutants.
Main Results:
- TC10 expression and active GTP-bound levels were significantly increased in v-Rel-transformed chicken embryonic fibroblasts (CEFs).
- Dominant-negative TC10 reduced colony formation, while TC10 overexpression enhanced it.
- Overexpression of TC10 alone promoted anchorage-independent growth and increased saturation density in CEFs.
Conclusions:
- Elevated TC10 activity is a key contributor to v-Rel-mediated transformation of CEFs.
- Rho factors, like TC10, can alone induce in vitro transformation of primary cells.
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