Source:http://linkedlifedata.com/resource/pubmed/id/14646476
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6
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| pubmed:dateCreated |
2003-12-3
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| pubmed:abstractText |
The cell surface Fas antigen transducts an apoptotic signal by its crosslinking with Fas ligand or anti-Fas antibody in a variety of human cultured cells. In this study, we examined the expression of Fas antigen and its mediation of apoptosis in six human colorectal carcinoma cell lines. A flow cytometric analysis revealed that LoVo, DLD-1, WiDr and SW837 cell lines showed higher expression levels of Fas antigen, in contrast to lower expression in COLO201 and COLO320DM. Interferon-gamma enhanced the expression of Fas antigen in all of the cell lines examined. Both Fas ligand and Fas-associated phosphatase-1 (FAP-1) were expressed only in COLO320DM. Anti-Fas antibody induced apoptosis in LoVo carrying wild-type p53 gene, but not in the other five cell lines carrying mutated p53 gene. The transfection of wild-type p53 gene using an adenovirus vector upregulated P53 protein in WiDr and SW837 cells, both of which showed, however, no increase in apoptotic cells by anti-Fas antibody treatment. These results indicated that (1) Fas antigen was variably expressed, regardless of the p53 gene status and (2) the susceptibility to anti-Fas antibody-mediated apoptosis did not correlate to Fas, Fas ligand or FAP-1 expression levels. Therefore, we conclude that wild-type P53 expression might not necessarily be essential for Fas-mediated apoptosis in human colorectal carcinoma cell lines.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Dec
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| pubmed:issn |
1360-8185
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
3
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
431-7
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| pubmed:year |
1998
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| pubmed:articleTitle |
Anti-Fas antibody-induced apoptosis in human colorectal carcinoma cell lines: role of the p53 gene.
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| pubmed:affiliation |
First Department of Pathology, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, Tottori 683-8503, Japan.
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| pubmed:publicationType |
Journal Article
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