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首页> 外文期刊>Journal of Cellular Physiology >PC12-E2 cells: a stable variant with altered responses to growth factor stimulation.
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PC12-E2 cells: a stable variant with altered responses to growth factor stimulation.

机译:PC12-E2细胞:一个稳定的变异与改变对生长因子刺激的反应。

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摘要

A variant cell line, designated E2, characterized by more rapid responses to nerve growth factor (NGF) and basic fibroblast growth factor (bFGF) and markedly more robust responses to interleukin-6 and 8-Br-cAMP, has been subcloned from the rat PC12 cell line. The enhanced responsiveness to NGF in E2 cells is not due to receptor overexpression as judged by TrkA protein levels and tyrosine kinase activity, but may be associated with the increased and prolonged tyrosine phosphorylation of ERK1 (extracellular signal regulated kinase 1) and ERK2. The rapid morphological differentiation induced by different growth factors in E2 cells is mediated in a transcription-independent manner suggesting that E2 cells may constitutively express some differentiation-associated molecules that allow direct entry into the neuronal program.
机译:变异细胞系,指定E2,特点更快速的反应神经生长因子(神经生长因子)和碱性纤维母细胞生长因子(bFGF)和明显更健壮的反应白细胞介素- 6和8-Br-cAMP subcloned从老鼠PC12细胞系。反应在E2不是由于细胞神经生长因子受体过度根据TrkA蛋白质水平和酪氨酸激酶活性,但可能与和长时间的增加有关酪氨酸的磷酸化ERK1(细胞外信号调节激酶1)和ERK2。形态分化引起的不同的生长因子在E2细胞介导的transcription-independent的方式显示E2细胞可能持续表达一些differentiation-associated分子,允许直接进入神经程序。

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