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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

TNF-mediated cytotoxicity and resistance in human prostate cancer cell lines.

BACKGROUND: The contribution of TNF receptor (TNF-R) expression was investigated with respect to TNF sensitivity or insensitivity for androgen-dependent and androgen-independent human prostate cancer (PCA) cell lines, respectively. METHODS: Flow cytometric analyses using monoclonal antibodies against the 55-kDa receptor (TNF-R1) and the 75-kDa receptor (TNF-R2) indicated that both receptors were expressed on all three cell lines. RESULTS: Moreover, expression of TNF-R1 was greater than expression of TNF-R2 in these PCA cells. All three PCA cell lines produced IL-6. However, IL-6 production was enhanced when TNF-insensitive JCA-1 and PC-3 cells, but not TNF-sensitive LNCaP cells, were treated with rTNF (10(-9) M). CONCLUSIONS: These data suggest that the lack of an antiproliferative effect of rTNF on the androgen-independent PCA cell lines PC-3 and JCA-1 is not due to the failure of these cells to express TNF-R, but may be related to the differences in TNF-mediated IL-6 expression by these PCA cell lines.[1]

References

  1. TNF-mediated cytotoxicity and resistance in human prostate cancer cell lines. Nakajima, Y., DelliPizzi, A.M., Mallouh, C., Ferreri, N.R. Prostate (1996) [Pubmed]
 
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