In vivo HIF-mediated reductive carboxylation is regulated by citrate levels and sensitizes VHL-deficient cells to glutamine deprivation.
In vivo HIF-mediated reductive carboxylation is regulated by citrate levels and sensitizes VHL-deficient cells to glutamine deprivation.
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DOI:
10.1016/j.cmet.2013.02.002
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发表时间:
2013-03-05
期刊:
影响因子:
29
通讯作者:
Iliopoulos O
中科院分区:
文献类型:
--
作者:
Gameiro PA;Yang J;Metelo AM;Pérez-Carro R;Baker R;Wang Z;Arreola A;Rathmell WK;Olumi A;López-Larrubia P;Stephanopoulos G;Iliopoulos O
Hypoxic and VHL-deficient cells use glutamine to generate citrate and lipids through reductive carboxylation (RC) of α-ketoglutarate. To gain insights into the role of HIF and the molecular mechanisms underlying RC, we took advantage of a panel of disease-associated VHL mutants and showed that HIF expression is necessary and sufficient for the induction of RC in human renal cell carcinoma (RCC) cells. HIF expression drastically reduced intracellular citrate levels. Feeding VHL-deficient RCC cells with acetate or citrate or knocking down PDK-1 and ACLY restored citrate levels and suppressed RC. These data suggest that HIF-induced low intracellular citrate levels promote the reductive flux by mass action to maintain lipogenesis. Using [1–13C] glutamine, we demonstrated in vivo RC activity in VHL-deficient tumors growing as xenografts in mice. Lastly, HIF rendered VHL-deficient cells sensitive to glutamine deprivation in vitro, and systemic administration of glutaminase inhibitors suppressed the growth of RCC cells as mice xenografts.
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DOI:
10.1074/jbc.m901790200
发表时间:
2009-06-19
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Mole DR;Blancher C;Copley RR;Pollard PJ;Gleadle JM;Ragoussis J;Ratcliffe PJ
通讯作者:
Ratcliffe PJ
影响因子:
3.3
作者:
Diebold I;Petry A;Hess J;Görlach A
通讯作者:
Görlach A
影响因子:
29
作者:
Marin-Valencia I;Yang C;Mashimo T;Cho S;Baek H;Yang XL;Rajagopalan KN;Maddie M;Vemireddy V;Zhao Z;Cai L;Good L;Tu BP;Hatanpaa KJ;Mickey BE;Matés JM;Pascual JM;Maher EA;Malloy CR;Deberardinis RJ;Bachoo RM
通讯作者:
Bachoo RM
影响因子:
50.3
作者:
Maranchie, JK;Vasselli, JR;Klausner, RD
通讯作者:
Klausner, RD
DOI:
10.1073/pnas.91.14.6496
发表时间:
1994-07-05
影响因子:
11.1
作者:
FIRTH, JD;EBERT, BL;RATCLIFFE, PJ
通讯作者:
RATCLIFFE, PJ