MicroRNA-210 regulates mitochondrial free radical response to hypoxia and krebs cycle in cancer cells by targeting iron sulfur cluster protein ISCU.
MicroRNA-210 regulates mitochondrial free radical response to hypoxia and krebs cycle in cancer cells by targeting iron sulfur cluster protein ISCU.
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DOI:
10.1371/journal.pone.0010345
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发表时间:
2010-04-26
期刊:
影响因子:
3.7
通讯作者:
Harris AL
中科院分区:
文献类型:
--
作者:
Favaro E;Ramachandran A;McCormick R;Gee H;Blancher C;Crosby M;Devlin C;Blick C;Buffa F;Li JL;Vojnovic B;Pires das Neves R;Glazer P;Iborra F;Ivan M;Ragoussis J;Harris AL
Hypoxia in cancers results in the upregulation of hypoxia inducible factor 1 (HIF-1) and a microRNA, hsa-miR-210 (miR-210) which is associated with a poor prognosis. In human cancer cell lines and tumours, we found that miR-210 targets the mitochondrial iron sulfur scaffold protein ISCU, required for assembly of iron-sulfur clusters, cofactors for key enzymes involved in the Krebs cycle, electron transport, and iron metabolism. Down regulation of ISCU was the major cause of induction of reactive oxygen species (ROS) in hypoxia. ISCU suppression reduced mitochondrial complex 1 activity and aconitase activity, caused a shift to glycolysis in normoxia and enhanced cell survival. Cancers with low ISCU had a worse prognosis. Induction of these major hallmarks of cancer show that a single microRNA, miR-210, mediates a new mechanism of adaptation to hypoxia, by regulating mitochondrial function via iron-sulfur cluster metabolism and free radical generation.
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DOI:
10.1042/bj20081386
发表时间:
2009-01-01
期刊:
The Biochemical journal
影响因子:
--
作者:
Murphy MP
通讯作者:
Murphy MP
影响因子:
9.8
作者:
Mochel, Fanny;Knight, Melanie A.;Hallers, Ronald G.
通讯作者:
Hallers, Ronald G.
影响因子:
6.5
作者:
Lawrie, Charles H.;Gal, Shira;Harris, Adrian L.
通讯作者:
Harris, Adrian L.
影响因子:
2.3
作者:
Iborra, Francisco J.;Buckle, Veronica
通讯作者:
Buckle, Veronica
影响因子:
5.3
作者:
Bell, Eric L.;Klimova, Tatyana A.;Chandel, Navdeep S.
通讯作者:
Chandel, Navdeep S.