Title : Involvement of p21(Waf1/Cip1) and its cleavage by DEVD-caspase during apoptosis of colorectal cancer cells induced by butyrate.

Pub. Date : 2000 Jan

PMID : 10607727






10 Functional Relationships(s)
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1 Involvement of p21(Waf1/Cip1) and its cleavage by DEVD-caspase during apoptosis of colorectal cancer cells induced by butyrate. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens
2 Involvement of p21(Waf1/Cip1) and its cleavage by DEVD-caspase during apoptosis of colorectal cancer cells induced by butyrate. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens
3 Involvement of p21(Waf1/Cip1) and its cleavage by DEVD-caspase during apoptosis of colorectal cancer cells induced by butyrate. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens
4 We now show, in LIM 1215 colorectal cancer cells, that butyrate, in addition to activating DEVD-caspase and inducing apoptosis, also increases expression and cleavage of the universal cyclin-dependent kinase inhibitor p21(Waf1/Cip1) and leads to hypo-phosphorylation of retinoblastoma protein. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens
5 We now show, in LIM 1215 colorectal cancer cells, that butyrate, in addition to activating DEVD-caspase and inducing apoptosis, also increases expression and cleavage of the universal cyclin-dependent kinase inhibitor p21(Waf1/Cip1) and leads to hypo-phosphorylation of retinoblastoma protein. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens
6 We now show, in LIM 1215 colorectal cancer cells, that butyrate, in addition to activating DEVD-caspase and inducing apoptosis, also increases expression and cleavage of the universal cyclin-dependent kinase inhibitor p21(Waf1/Cip1) and leads to hypo-phosphorylation of retinoblastoma protein. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens
7 Expression of p21 had similar kinetics to that of the essential protein required for DEVD-caspase activation, indicating parallel effects of butyrate on anti-apoptotic and pro-apoptotic mechanisms. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens
8 On the other hand, subsequent culture of these cells for 2-3 days in the absence of butyrate resulted in down-regulation of p21 and restoration of sensitivity to apoptosis by butyrate. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens
9 Here we show, for the first time, that p21 is a target of effector caspases in colorectal cancer cells and that the resistance to butyrate-induced apoptosis is characterized by failure of p21 cleavage. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens
10 Here we show, for the first time, that p21 is a target of effector caspases in colorectal cancer cells and that the resistance to butyrate-induced apoptosis is characterized by failure of p21 cleavage. Butyrates cyclin dependent kinase inhibitor 1A Homo sapiens