期刊
CANCER RESEARCH
卷 73, 期 23, 页码 6938-6950出版社
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/0008-5472.CAN-13-0913
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资金
- Hormel Foundation
- NIH [CA120388, CA081064, ES016548]
- National Basic Research Program of China [2011CB504305]
- National Natural Science Foundation of China [30930101, 81161120410]
- National High Technology Research and Development Program of China [2012AA02A501]
TRAF4 is an adapter protein overexpressed in certain cancers, but its contributions to tumorigenesis are unclear. In lung cancer cells and primary lung tumors, we found that TRAF4 is overexpressed. RNA interference-mediated attenuation of TRAF4 expression blunted the malignant phenotype in this setting, exerting inhibitory effects on cell proliferation, anchorage-independent growth, and tumor development in a xenograft mouse model. Unexpectedly, we discovered that TRAF4, but not Skp2, was required for activation of the pivotal cell survival kinase Akt through ubiquitination. Furthermore, TRAF4 attenuation impaired glucose metabolism by inhibiting expression of Glut1 and HK2 mediated by the Akt pathway. Overall, our work suggests that TRAF4 offers a candidate molecular target for lung cancer prevention and therapy. (C)2013 AACR.
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