Transcriptional activation by TGF beta 1 mediated by the dyad symmetry element (DSE) and the TPA responsive element (TRE).

Transcriptional activation by TGF beta 1 mediated by the dyad symmetry element (DSE) and the TPA responsive element (TRE).
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由二元对称元件 (DSE) 和 TPA 反应元件 (TRE) 介导的 TGF beta 1 转录激活。

DOI:
10.1016/0006-291x(90)91139-j
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发表时间:
1990
影响因子:
3.1
通讯作者:
W. Kruijer
W. Kruijer
中科院分区:
生物学4区
文献类型:
--
作者:
R. de Groot;W. Kruijer

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转化生长因子β1 (tgf - β1)是一种多功能的生长和分化调节剂。然而,导致tgf - β1生物学效应的细胞质和核信号转导机制在很大程度上是未知的。在本报告中,我们发现tgf - β1诱导直接早期基因c-jun和jun B的表达,这些基因编码反式作用因子,调节多种基因对生长因子和酚酯的转录。TGFβ1在静止小鼠3T3成纤维细胞(受TGFβ1刺激生长)和水貂肺CCL64 (ML-CCL64)上皮细胞(受TGFβ1抑制生长)中以蛋白质合成独立的方式诱导jun基因。在3T3细胞中,TGFβ1可诱导PDGF诱导的乙脑基因,而在ML-CCL64细胞中则不能。此外,我们发现含有TPA响应元件(TRE)或双对称元件(DSE)的嵌合报告- cat构建体在生长抑制和生长刺激细胞的瞬时转染试验中均被tgf - β1激活。这些结果表明,tgf - β1的早期基因组应答类似于血清、生长因子和佛波酯诱导的基因表达变化,提示了转录激活的共同机制。
Transforming growth factor β1 (TGFβ1) is a multifunctional regulator of growth and differentiation. However, both cytoplasmatic and nuclear signal transduction mechanisms leading to the biological effects of TGFβ1 are largely unknown. In this report we show, that TGFβ1 induces the expression of the immediate early genes c-jun and jun B, that encode trans-acting factors regulating transcription of a variety of genes in response to growth factors and phorbol esters. The jun genes are induced by TGFβ1 in a protein synthesis independent fashion both in quiescent mouse 3T3 fibroblasts, which are growth stimulated by TGFβ1, as well as in mink lung CCL64 (ML-CCL64) epithelial cells, which are growth inhibited by TGFβ1. The PDGF inducible JE gene was induced by TGFβ1 in 3T3, but not in ML-CCL64 cells. Furthermore, we show that chimaeric reporter-CAT constructs containing the TPA responsive element (TRE) or the dyad symmetry element (DSE) are activated by TGFβ1 in transient transfection assays in both growth inhibited and growth stimulated cells. These results show that the early genomic responses to TGFβ1 resemble changes in gene expression induced by serum, growth factors and phorbol esters, suggesting common mechanisms of transcriptional activation.
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发表时间: 1987-05
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影响因子: --
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DOI: --
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影响因子: --
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发表时间: 1988-05-20
期刊: SCIENCE
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