YB-1 evokes susceptibility to cancer through cytokinesis failure, mitotic dysfunction and HER2 amplification.
YB-1 evokes susceptibility to cancer through cytokinesis failure, mitotic dysfunction and HER2 amplification.
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DOI:
10.1038/onc.2011.82
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发表时间:
2011-08-25
期刊:
影响因子:
8
通讯作者:
Dunn SE
中科院分区:
文献类型:
--
作者:
Davies AH;Barrett I;Pambid MR;Hu K;Stratford AL;Freeman S;Berquin IM;Pelech S;Hieter P;Maxwell C;Dunn SE
Y-box binding protein-1 (YB-1) expression in the mammary gland promotes breast carcinoma that demonstrates a high degree of genomic instability. In the present study, we developed a model of premalignancy to characterize the role of this gene during breast cancer initiation and early progression. Antibody microarray technology was used to ascertain global changes in signal transduction following the conditional expression of YB-1 in human mammary epithelial cells (HMEC). Cell cycle associated proteins were frequently altered with the most dramatic being LIM Kinase 1/2 (LIMK1/2). Consequently, the misexpression of LIMK1/2 was associated with cytokinesis failure that acted as a precursor to centrosome amplification. Detailed investigation revealed that YB-1 localized to the centrosome in a phosphorylation-dependent manner where it complexed with pericentrin and γ-tubulin. This was found to be essential in maintaining the structural integrity and microtubule nucleation capacity of the organelle. Prolonged exposure to YB-1 led to rampant acceleration toward tumourigenesis with the majority of cells acquiring numerical and structural chromosomal abnormalities. Slippage through the G1/S checkpoint due to overexpression of cyclin E promoted continued proliferation of these genomically compromised cells. As malignancy further progressed, we identified a subset of cells harbouring HER2 amplification. Our results recognize YB-1 as a cancer susceptibility gene with the capacity to prime cells for tumourigenesis.
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DOI:
10.1038/nrm2718
发表时间:
2009-07
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1186/bcr2156
发表时间:
2008
期刊:
Breast cancer research : BCR
影响因子:
--
作者:
Habibi G;Leung S;Law JH;Gelmon K;Masoudi H;Turbin D;Pollak M;Nielsen TO;Huntsman D;Dunn SE
通讯作者:
Dunn SE
影响因子:
8.4
作者:
Basaki, Yuji;Taguchi, Ken-ichi;Kuwano, Michihiko
通讯作者:
Kuwano, Michihiko
DOI:
10.1016/j.biocel.2006.01.008
发表时间:
2006-01-01
影响因子:
4
作者:
Guay, David;Gaudreault, Isabelle;Lebel, Michel
通讯作者:
Lebel, Michel
影响因子:
7.4
作者:
Dimri, G;Band, H;Band, V
通讯作者:
Band, V