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Publication : p21(WAF1/cip1) is an important determinant of intestinal cell response to sulindac in vitro and in vivo.

First Author  Yang W Year  2001
Journal  Cancer Res Volume  61
Issue  16 Pages  6297-302
PubMed ID  11507085 Mgi Jnum  J:70893
Mgi Id  MGI:2148432 Citation  Yang W, et al. (2001) p21(WAF1/cip1) is an important determinant of intestinal cell response to sulindac in vitro and in vivo. Cancer Res 61(16):6297-302
abstractText  Sulindac, a nonsteroidal anti-inflammatory drug, inhibits intestinal tumorigenesis in humans and rodents. Sulindac induced complex alterations in gene expression, but only 0.1% of 8063 sequences assayed were altered similarly by the drug in rectal biopsies of patients treated for 1 month and during response of colonic cells in culture. Among these changes was induction of the cyclin-dependent kinase inhibitor, p21(WAF1/cip1). In Apc1638(+/-) mice, targeted inactivation of p21 increased intestinal tumor formation in a gene-dose-dependent manner, but inactivation of p21 completely eliminated the ability of sulindac to both inhibit mitotic activity in the duodenal mucosa and to inhibit Apc-initiated tumor formation. Thus, p21 is essential for tumor inhibition by this drug. The array data can be accessed on the Internet at http://sequence.aecom.yu.edu/genome/.
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