Title : Doxorubicin blocks proliferation of cancer cells through proteolytic activation of CREB3L1.

Pub. Date : 2012 Dec 18

PMID : 23256041






7 Functional Relationships(s)
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1 Doxorubicin blocks proliferation of cancer cells through proteolytic activation of CREB3L1. Doxorubicin cAMP responsive element binding protein 3 like 1 Homo sapiens
2 Here we report that doxorubicin stimulates de novo synthesis of ceramide, which in turn activates CREB3L1, a transcription factor synthesized as a membrane-bound precursor. Doxorubicin cAMP responsive element binding protein 3 like 1 Homo sapiens
3 Doxorubicin stimulates proteolytic cleavage of CREB3L1 by Site-1 Protease and Site-2 Protease, allowing the NH(2)-terminal domain of CREB3L1 to enter the nucleus where it activates transcription of genes encoding inhibitors of the cell cycle, including p21. Doxorubicin cAMP responsive element binding protein 3 like 1 Homo sapiens
4 Doxorubicin stimulates proteolytic cleavage of CREB3L1 by Site-1 Protease and Site-2 Protease, allowing the NH(2)-terminal domain of CREB3L1 to enter the nucleus where it activates transcription of genes encoding inhibitors of the cell cycle, including p21. Doxorubicin cAMP responsive element binding protein 3 like 1 Homo sapiens
5 Knockdown of CREB3L1 mRNA in human hepatoma Huh7 cells and immortalized human fibroblast SV589 cells conferred increased resistance to doxorubicin, whereas overexpression of CREB3L1 in human breast cancer MCF-7 cells markedly enhanced the sensitivity of these cells to doxorubicin. Doxorubicin cAMP responsive element binding protein 3 like 1 Homo sapiens
6 Knockdown of CREB3L1 mRNA in human hepatoma Huh7 cells and immortalized human fibroblast SV589 cells conferred increased resistance to doxorubicin, whereas overexpression of CREB3L1 in human breast cancer MCF-7 cells markedly enhanced the sensitivity of these cells to doxorubicin. Doxorubicin cAMP responsive element binding protein 3 like 1 Homo sapiens
7 These results suggest that measurement of CREB3L1 expression may be a useful biomarker in identifying cancer cells sensitive to doxorubicin.DOI:http://dx.doi.org/10.7554/eLife.00090.001. Doxorubicin cAMP responsive element binding protein 3 like 1 Homo sapiens