首页> 外文期刊>Journal of Virology >Specific protein phosphorylation in interferon-treated uninfected and virus-infected mouse L929 cells: enhancement by double-stranded RNA.
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Specific protein phosphorylation in interferon-treated uninfected and virus-infected mouse L929 cells: enhancement by double-stranded RNA.

机译:特定蛋白质磷酸化在干扰素处理的未感染和病毒感染的小鼠L929细胞中:双链RNA的增强。

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The enhanced phosphorylation of specific protein(s) observed in extracts from interferon-treated cells (in the presence of ATP and double-stranded [ds] RNA) was also seen in intact mouse L929 cells upon treatment with dsRNA, polyriboinosinic.polyribocytidylic acid [poly(rI.rC)] or reovirus dsRNA, using 32Pi as radiolabel. Labeling of a 65,000-dalton protein(s) with 32P was greatly increased in interferon-treated cells in the presence of added dsRNA, suggesting that the expression in vivo of the kinase activity involved is regulated by dsRNA. This was used as a test system to investigate whether the activity of interferon-induced enzyme(s) is stimulated following virus infection, possibly owing to the accumulation of dsRNA. No obvious increase in 32P-labeling of 65,000-dalton protein(s) was observed upon infection of interferon-treated cells with mengovirus or vesicular stomatitis virus. A basal level of 32P-labeling of the 65,000-dalton protein(s) was detected in interferon-treated cells in the absence of added dsRNA, indicating a basal level of expression of the kinase activity involved. The possible implications of these results are discussed.
机译:在用DSRNA,多吡吡吡吡糖苷治疗后,还观察到在来自干扰素处理的细胞中观察到的来自干扰素处理的细胞中的特定蛋白质(在ATP和双链[DS] RNA存在下).Polyriboydyidylic acid,在Polyriboinosinic.polyibydylic acider上进行了完整的小鼠L929细胞中聚(RI.RC)]或REOVIRUS DSRNA,使用32PI作为放射性标记。在添加的DSRNA存在下,在干扰素处理的细胞中,在干扰素处理的细胞中标记具有32P的65,000-Dalton蛋白质的标记大大增加,表明所涉及的激酶活性的体内表达是由dsRNA调节的。这被用作测试系统,以研究病毒感染后是否刺激干扰素诱导的酶的活性,可能由于DSRNA的积累。在用Mengovirus或凹形口腔炎病毒感染干扰素处理的细胞后,观察到32P标记的明显增加了32P标记。在没有添加的DSRNA的情况下在干扰素处理的细胞中检测到65,000-Dalton蛋白的32P标记的基础水平,表明所涉及的激酶活性的表达的基础水平。讨论了这些结果的可能影响。

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    《Journal of Virology》 |1979年第1期|共11页
  • 作者

    S L Gupta;

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  • 收录信息 美国《科学引文索引》(SCI);
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