Interleukin 4 induces changes in the chromatin structure of the gamma 1 switch region in resting B cells before switch recombination.

Interleukin 4 induces changes in the chromatin structure of the gamma 1 switch region in resting B cells before switch recombination.
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在开关重组之前,白细胞介素 4 会诱导静息 B 细胞中 γ 1 开关区域的染色质结构发生变化。

DOI:
10.1084/jem.172.1.375
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发表时间:
1990
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Vitetta,ES
Vitetta,ES
中科院分区:
--
文献类型:
--
作者:
Berton,MT;Vitetta,ES

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白介素4(IL-4)可在丝裂原刺激下或通过与辅助性T细胞(Th)的同源相互作用,诱导SIGG-小鼠B细胞表达IgG1。我们已经研究了IL-4在脂多糖(LPS)刺激的小鼠B细胞中诱导向IgG1转换的分子基础,并已证明IL-4在转换重组之前诱导了Gamma 1转换区域的转录。我们现在证明,IL-4在静息B细胞中诱导了一个位于GMA1转换区5‘端的DNase I超敏部位。LP不是必需的,但它可以增强诱导能力。因此,IL-4与其受体的相互作用导致伽马1开关区的可及性增加。更开放的染色质结构和更高的转录活性可能是选择该区域进行开关重组的重要因素。
Interleukin 4 (IL-4) can induce the expression of IgG1 in sIgG- murine B cells stimulated with mitogens or through a cognate interaction with T helper (Th) cells. We have investigated the molecular basis for the IL-4-induced switch to IgG1 in lipopolysaccharide (LPS)-stimulated murine B cells and have previously shown that IL-4 induces transcription of the gamma 1 switch region before switch recombination. We now demonstrate that IL-4 induces a DNase I hypersensitive site at the 5' end of the gamma 1 switch region in resting B cells. LPS is not required, but it enhances induction. Hence, the interaction of IL-4 with its receptor results in increased accessibility of the gamma 1 switch region. The more open chromatin structure and increased transcriptional activity may be important in the selection of this region for switch recombination.
DOI: 10.4049/jimmunol.139.1.10
发表时间: 1987-07
影响因子: 4.4
作者:
C. Snapper;W. Paul
通讯作者: C. Snapper;W. Paul
白细胞介素 4 诱导的 DNase I 超敏感位点表明伽马 1 开关区域在开关重组之前打开。
DOI: --
发表时间: 1989
影响因子: 4.4
作者:
J. Schmitz;Andreas Radbruch
通讯作者: Andreas Radbruch