Sehgal P B, Tamm I
Proc Natl Acad Sci U S A. 1976 May;73(5):1621-5. doi: 10.1073/pnas.73.5.1621.
The process that shuts off poly(I)-poly(C)-induced interferon production in a strain of diploid human fibroblasts (FS-4)-involves the synthesis of new RNA, presumably nuclear heterogeneous RNA. When cultures in the shutoff phase of interferon production are treated with actinomycin D (5 mug/ml) or 5,6-dichloro-1-beta-D-ribofuranosylbenzimidazole (DRB 40 muM), the rate of interferon production continues to decline for a further 3-4 hr, but then tends to level off. The treated cultures maintain interferon production at a reduced level for at least 10 hr. The residual rate of interferon production is higher in cultures which received actinomycin D or DRB early in the shutoff phase as compared to the rate in cultures treated late.
在一株二倍体人成纤维细胞(FS - 4)中,关闭聚肌苷酸 - 聚胞苷酸诱导的干扰素产生的过程涉及新RNA的合成,推测为核不均一RNA。当处于干扰素产生关闭阶段的培养物用放线菌素D(5微克/毫升)或5,6 - 二氯 - 1 - β - D - 呋喃核糖基苯并咪唑(DRB 40微摩尔)处理时,干扰素产生速率在接下来的3 - 4小时内继续下降,但随后趋于平稳。经处理的培养物在至少10小时内维持较低水平的干扰素产生。与在关闭阶段后期处理的培养物相比,在关闭阶段早期接受放线菌素D或DRB处理的培养物中干扰素产生的残留速率更高。