INTERFERON-ALPHA AND INTERFERON-BETA DOWN-REGULATE THE EXPRESSION OF BASIC FIBROBLAST GROWTH-FACTOR IN HUMAN CARCINOMAS

被引:393
|
作者
SINGH, RK [1 ]
GUTMAN, M [1 ]
BUCANA, CD [1 ]
SANCHEZ, R [1 ]
LLANSA, N [1 ]
FIDLER, IJ [1 ]
机构
[1] UNIV TEXAS,MD ANDERSON CANCER CTR,DEPT CELL BIOL,HOUSTON,TX 77030
关键词
ANGIOGENESIS;
D O I
10.1073/pnas.92.10.4562
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
We investigated the influence of interferons alpha, beta, and gamma (IFN-alpha, -beta, and -gamma) on the production of basic fibroblast growth factor (bFGF) by human renal carcinoma cells. The human renal carcinoma cell metastatic line SN12PM6 was established in culture from a lung metastasis and SN12PM6-resistant cells were selected in vitro for resistance to the antiproliferative effects of IFN-alpha or IFN-beta. IFN-alpha and IFN-beta, but not IFN-gamma, down-regulated the expression of bFGF at the mRNA and protein levels by a mechanism independent of their antiproliferative effects. Downregulation of bFGF required a long exposure (> 4 days) of cells to low concentrations (>10 units/ml) of IFN-alpha or IFN-beta. The withdrawal of IFN-alpha or IFN-beta from the medium permitted SN12PM6-resistant cells to resume production of bFGF. The incubation of human bladder, prostate, colon, and breast carcinoma cells with noncytostatic concentrations of IFN-alpha or IFN-beta also produced down-regulation of bFGF production.
引用
收藏
页码:4562 / 4566
页数:5
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