Insulin-like growth factor-2 (IGF-2) activates estrogen receptor-α and -β via the IGF-1 and the insulin receptors in breast cancer cells.
Insulin-like growth factor-2 (IGF-2) activates estrogen receptor-α and -β via the IGF-1 and the insulin receptors in breast cancer cells.
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DOI:
10.3109/08977194.2011.565003
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发表时间:
2011-04
期刊:
影响因子:
--
通讯作者:
De León D
中科院分区:
文献类型:
--
作者:
Richardson AE;Hamilton N;Davis W;Brito C;De León D
The estrogen receptor (ER) is a primary target for breast cancer (BC) treatment. As BC progresses to estrogen-independent growth, the IGF-1R and the ER interact in synergistic crosstalk mechanisms which results in enhanced activation of both receptors signaling cascades. Insulin-like growth factor 2 (IGF-2) is critical in BC progression and its actions are mediated by the IGF-1R. Our previous studies showed that IGF-2 regulates survival genes that protect the mitochondria and promote chemoresistance. In this study, we analyzed BC cells by subcellular fractionation, Western-Blot, qRT-PCR and siRNA analysis. Our results demonstrate that IGF-2 activates ER-α and ER-β and modulates their translocation to the nucleus, membrane organelles and the mitochondria. IGF-2 actions are mediated by the IGF-1R and the insulin receptor (IR). This novel mechanism of IGF-2 synergistic crosstalk signaling with ER-α and ER-β can promote estrogen-independent BC progression and provides new therapeutic targets for the treatment of breast cancer patients.
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DOI:
10.1083/jcb.201007165
发表时间:
2011-01-10
期刊:
The Journal of cell biology
影响因子:
--
作者:
Ge Y;Sun Y;Chen J
通讯作者:
Chen J
影响因子:
11.2
作者:
Goel, HL;Moro, L;Languino, LR
通讯作者:
Languino, LR
影响因子:
4.8
作者:
Kahlert, S;Nuedling, S;Grohé, C
通讯作者:
Grohé, C
影响因子:
4.8
作者:
Byrd, JC;Devi, GR;MacDonald, RG
通讯作者:
MacDonald, RG
影响因子:
11.8
作者:
Brisken, C;Ayyannan, A;Heineman, A
通讯作者:
Heineman, A