Molecular characterization of TGFß mediated cancer cell proliferation - TGFß Switch in Cancer
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Von Händler/Antiquariat, BuySomeBooks [52360437], Las Vegas, NV, U.S.A.
Paperback. 100 pages. Dimensions: 8.7in. x 5.9in. x 0.2in.TGF has a dual role in carcinogenesis, acting as a growth inhibitor in early tumor stages and a promoter of cell proliferation in advanced diseases. Although this cellular phenomenon is well established, the underlying molecular mechanisms remain elusive. Here, we report that sequential induction of NFAT and c-Myc transcription factors is sufficient and required for the TGF switch from a cell cycle inhibitor to a growth promoter pathway in cancer cells. TGF induces the expression and activation of NFAT factors, which then translocate into the nucleus to promote c-Myc expression. In response to TGF, activated NFAT factors bind to and displace Smad3 repressor complexes from the c-Myc promoter. c-Myc in turn stimulates cell cycle progression and growth through up-regulation of D-type cyclins. Most importantly, NFAT knockdown not only prevents c-Myc activation and cell proliferation, but also partially restores TGF-beta-induced cell cycle arrest and growth suppression. Taken together, this study provides the first evidence for a Smad-independent master regulatory pathway in TGF-promoted cell growth that is defined by sequential transcriptional activation of NFAT and c-Myc factors. This item ships from multiple locations. Your book may arrive from Roseburg,OR, La Vergne,TN.

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Von Händler/Antiquariat, amitcj.
TGF? has a dual role in carcinogenesis, acting as a growth inhibitor in early tumor stages and a promoter of cell proliferation in advanced diseases. Although this cellular phenomenon is well established, the underlying molecular mechanisms remain elusive. Here, we report that sequential induction of NFAT and c-Myc transcription factors is sufficient and required for the TGF? switch from a cell cycle inhibitor to a growth promoter pathway in cancer cells. TGF? induces the expression and activation of NFAT factors, which then translocate into the nucleus to promote c-Myc expression. In response to TGF?, activated NFAT factors bind to and displace Smad3 repressor complexes from the c-Myc promoter. c-Myc in turn stimulates cell cycle progression and growth through up-regulation of D-type cyclins. Most importantly, NFAT knockdown not only prevents c-Myc activation and cell proliferation, but also partially restores TGF-beta-induced cell cycle arrest and growth suppression. Taken together, this study provides the first evidence for a Smad-independent master regulatory pathway in TGF?-promoted cell growth that is defined by sequential transcriptional activation of NFAT and c-Myc factors. Paperback, Label: VDM Verlag Dr. Müller, VDM Verlag Dr. Müller, Produktgruppe: Book, Publiziert: 2010-11-04, Studio: VDM Verlag Dr. Müller.

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