Inactivation of the von Hippel-Lindau tumor suppressor leads to selective expression of a human endogenous retrovirus in kidney cancer.
Inactivation of the von Hippel-Lindau tumor suppressor leads to selective expression of a human endogenous retrovirus in kidney cancer.
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DOI:
10.1038/onc.2011.179
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发表时间:
2011-11-24
期刊:
影响因子:
8
通讯作者:
Childs, R. W.
中科院分区:
文献类型:
--
作者:
Cherkasova, E.;Malinzak, E.;Rao, S.;Takahashi, Y.;Senchenko, V. N.;Kudryavtseva, A. V.;Nickerson, M. L.;Merino, M.;Hong, J. A.;Schrump, D. S.;Srinivasan, R.;Linehan, W. M.;Tian, X.;Lerman, M. I.;Childs, R. W.
A human endogenous retrovirus type E was recently found to be selectively expressed in most renal cell carcinomas (RCC). Importantly, antigens derived from this provirus are immunogenic, stimulating cytotoxic T-cells that kill RCC cells in vitro and in vivo. Here we show HERV-E expression is restricted to the clear cell subtype of RCC (ccRCC) characterized by an inactivation of the von Hippel-Lindau (VHL) tumor suppressor gene with subsequent stabilization of hypoxia-inducible transcription factors HIF-1α and -2α. HERV-E expression in ccRCC linearly correlated with HIF-2α levels and could be silenced in tumor cells by either transfection of normal VHL or siRNA inhibition of HIF-2α. Using chromatin immunoprecipitation, we demonstrated that HIF-2α can serve as transcriptional factor for HERV-E by binding with HIF response elements (HRE) localized in the proviral 5′LTR. Remarkably, the LTR was found to be hypomethylated only in HERV-E-expressing ccRCC while other tumors and normal tissues possessed a hypermethylated LTR preventing proviral expression. Taken altogether, these findings provide the first evidence that inactivation of a tumor suppressor gene can result in aberrant proviral expression in a human tumor and give insights needed for translational research aimed at boosting human immunity against antigenic components of this HERV-E.
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DOI:
10.1073/pnas.93.20.10595
发表时间:
1996-10-01
影响因子:
11.1
作者:
Iliopoulos, O;Levy, AP;Goldberg, MA
通讯作者:
Goldberg, MA
影响因子:
3.1
作者:
Sandlund, Johanna;Ljungberg, Borje;Rasmuson, Torgny
通讯作者:
Rasmuson, Torgny
影响因子:
64.8
作者:
Maxwell, PH;Wiesener, MS;Ratcliffe, PJ
通讯作者:
Ratcliffe, PJ
影响因子:
15.9
作者:
Takahashi, Yoshiyuki;Harashima, Nanae;Childs, Richard W.
通讯作者:
Childs, Richard W.
影响因子:
37.3
作者:
Menendez L;Benigno BB;McDonald JF
通讯作者:
McDonald JF