Basic Fibroblast Growth Factor‐Induced Increase in zif/268 and c‐fos mRNA Levels Is Ca2+ Dependent in Primary Cultures of Hippocampal Neurons

Basic Fibroblast Growth Factor‐Induced Increase in zif/268 and c‐fos mRNA Levels Is Ca2+ Dependent in Primary Cultures of Hippocampal Neurons
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海马神经元原代培养物中碱性成纤维细胞生长因子诱导的 zif/268 和 c-fos mRNA 水平增加具有 Ca2+ 依赖性

DOI:
10.1111/j.1471-4159.1993.tb03626.x
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发表时间:
1993
影响因子:
4.7
通讯作者:
G. Barbin
G. Barbin
中科院分区:
医学2区
文献类型:
--
作者:
L. Ferhat;M. Khrestchatisky;M. Roisin;G. Barbin

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摘要:碱性成纤维细胞生长因子(bFGF)存在于发育中的大鼠脑中,并在培养中为海马神经元提供重要的营养支持。在原代培养的海马神经元(来源于大鼠胚胎)中,利用逆转录偶联PCR研究了bFGF对编码转录因子zif/268和c‐fos mrna表达的影响。在没有血清的情况下培养3天,bFGF分别在15分钟和30分钟内引起zif/268和c‐fos水平的急剧和短暂的增加。这两个早期基因的类似诱导发生在蛋白激酶C (PKC)的激活之后。bFGF诱导的激活在PKC脱敏后持续存在,但被细胞内Ca2+螯合抑制。这些结果表明,在海马神经元的原代培养中,bFGF通过需要Ca2+动员的途径诱导直接早期基因的表达。
Abstract: Basic fibroblast growth factor (bFGF) is present in the developing rat brain and has been shown to provide critical trophic support for hippocampal neurons in culture. The influence of bFGF on the expression of mRNAs encoding the transcription factors zif/268 and c‐fos was studied in primary cultures of hippocampal neurons (derived from rat embryos) using reverse transcription‐coupled PCR. In these cultures grown for 3 days in the absence of serum, bFGF causes a dramatic and transient increase in the levels of zif/268 and c‐fos, within 15 and 30 min, respectively. A similar induction of these two early genes occurs following activation of protein kinase C (PKC). The bFGF‐induced activation persists after PKC desensitization but is inhibited by chelation of intracellular Ca2+. These results suggest that in primary cultures of hippocampal neurons, bFGF induces the expression of immediate early genes through a pathway that requires Ca2+ mobilization.
DOI: 10.1016/s0021-9258(19)67608-8
发表时间: 1991-03
期刊: The Journal of biological chemistry
影响因子: --
作者:
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影响因子: 2.9
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DOI: 10.1016/0169-328x(91)90025-s
发表时间: 1991
期刊: Brain research. Molecular brain research
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影响因子: --
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