期刊
CANCER RESEARCH
卷 72, 期 18, 页码 4682-4695出版社
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/0008-5472.CAN-12-0440
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资金
- NIH [CA 116021, 5P30CA068485]
- Merit Award the Department of Veterans Affairs [1IO1BX000196]
- VA Senior Research Career Scientist Award
Although human angiosarcoma has been associated frequently with mutational inactivation of the tumor suppressor gene Ink4a/Arf, the underlying mechanisms have not been delineated. Here we report that malignant angiosarcoma is associated with high levels of RelA/NF-kappa B and IL-6 in contrast to normal vessels or benign hemagiomas. Studies of Ink4a/Arf deficient mice not only recapitulate genetic traits observed in human angiosarcoma, but also unveil a possible therapeutic link comprised of the NF-kB/IL-6/Stat3 signaling axis. In Ink4a/Arf(-/-) cells, NF-kappa B controlled Stat3 signaling by transcriptionally controlling the expression of IL-6, gp130, and Jak2. Further, IL-6 mediated Stat3 signaling through the sIL-6R. Inhibition of Ikk beta solely in myeloid cells was insufficient to block angiosarcoma development; in contrast, systemic inhibition of Ikk beta, IL-6, or Stat3 markedly inhibited angiosarcoma growth. Our findings offer clinical implications for targeting the NF-kB/IL-6/STAT3 pathway as a rational strategy to treat angiosarcoma. Cancer Res; 72(18); 4682-95. (C) 2012 AACR.
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