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Cancer Cell. 2006 Apr;9(4):301-12.

The stress-regulated protein p8 mediates cannabinoid-induced apoptosis of tumor cells.

Author information

  • 1Department of Biochemistry and Molecular Biology I, School of Biology, Complutense University, 28040 Madrid, Spain.

Abstract

One of the most exciting areas of current research in the cannabinoid field is the study of the potential application of these compounds as antitumoral drugs. Here, we describe the signaling pathway that mediates cannabinoid-induced apoptosis of tumor cells. By using a wide array of experimental approaches, we identify the stress-regulated protein p8 (also designated as candidate of metastasis 1) as an essential mediator of cannabinoid antitumoral action and show that p8 upregulation is dependent on de novo-synthesized ceramide. We also observe that p8 mediates its apoptotic effect via upregulation of the endoplasmic reticulum stress-related genes ATF-4, CHOP, and TRB3. Activation of this pathway may constitute a potential therapeutic strategy for inhibiting tumor growth.

PMID:
16616335
[PubMed - indexed for MEDLINE]
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