期刊
CANCER RESEARCH
卷 65, 期 7, 页码 2520-2525出版社
AMER ASSOC CANCER RESEARCH
DOI: 10.1158/0008-5472.CAN-03-2735
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The von Hippel-Lindau protein (pVHL) is a major tumor suppressor protein and also associated with the inhibition of angiogenesis via HIF-1 alpha ubiquitination and proteasomal degradation. To further elucidate the biological activity of pVHL in angiogenesis, pVHL-interacting proteins were screened using the yeast two-hybrid system. We found that a mouse homologue of the long form of Drosophila tumor suppressor l(2)tid, Tid-1(L), directly interacts with pVHL in vitro and in vivo. Furthermore, Tid-1(L) protein; enhanced the interaction between HIF-1 alpha. and pVHL, leading to the destabilization of HIF-1 alpha protein; therefore, Tid-1(L) protein decreased vascular endothelial growth factor expression and inhibited angiogenesis in vivo and in vitro. These findings propose that Tid-1(L) may play a critical role in pVHL-mediated tumor suppression by modulating the pVHL-dependent HIF-1 alpha stability.
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