Multiple signaling cascades are differentially involved in gene induction by double stranded RNA in interferon-alpha-primed cells.
Multiple signaling cascades are differentially involved in gene induction by double stranded RNA in interferon-alpha-primed cells.
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在干扰素 α 引发的细胞中,双链 RNA 不同程度地参与多种信号级联反应的基因诱导。
DOI:
10.1046/j.1432-1327.2001.02003.x
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发表时间:
2001
期刊:
影响因子:
--
通讯作者:
Offermann,MK
中科院分区:
文献类型:
--
作者:
Harcourt,JL;Offermann,MK
Priming with interfon (IFN)α enhanced the ability of the synthetic double‐stranded RNA polyriboinosinic acid: polyribocytidilic acid (pI:C), but not interleukin‐1β, to activate both p38 mitogen‐activated kinase (MAPK) and extracellular signal‐regulated kinase (ERK) signaling cascades. Activation by pI:C in IFNα‐primed cells was delayed compared to activation with interleukin‐1β, and this delay was followed by high, sustained activation of p38 MAPK and a modest elevation of ERK activation. Pharmacologic inhibition of either the ERK or the p38 MAPK pathway, using U0126 and SB203580, respectively, reduced interleukin‐6 protein induction by at least 70%, and combined inhibition of both pathways fully blocked interleukin‐6 protein expression and reduced interleukin‐6 mRNA induction by more than 80%. In contrast, induction of double‐stranded RNA‐activated protein kinase (PKR) mRNA and protein by IFNα and/or pI:C was minimally affected by either inhibitor. Induction of interferon‐regulatory factor‐1 (IRF‐1) by pI:C in IFNα primed cells was profoundly inhibited by U0126 but not by SB203580. Thus, IFNα priming enhances activation of p38 MAPK and ERK pathways by pI:C but not by interleukin‐1β, thereby enhancing the expression of some, but not all, genes that are induced by pI:C.
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DOI:
--
发表时间:
1983
期刊:
Journal of Gerontology
影响因子:
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作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
SHERROD, DR
DOI:
--
发表时间:
1979
期刊:
影响因子:
--
作者:
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通讯作者:
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