Nerve Growth Factor Induces Process Formation in Meningeal Cells: Implications for Scar Formation in the Injured CNS

Nerve Growth Factor Induces Process Formation in Meningeal Cells: Implications for Scar Formation in the Injured CNS
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神经生长因子诱导脑膜细胞过程形成:对受伤中枢神经系统疤痕形成的影响

DOI:
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发表时间:
1998
影响因子:
5.3
通讯作者:
D. Lindholm
D. Lindholm
中科院分区:
医学1区
文献类型:
--
作者:
J. Frisén;M. Risling;L. Korhonen;U. Zirrgiebel;C. Johansson;S. Cullheim;D. Lindholm

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神经生长因子(NGF)诱导PNS和CNS中神经元亚群的分化并支持其存活。在这里,我们报告说,脑膜细胞在软脑膜表达免疫反应和已知的神经生长因子受体,低亲和力受体p75和酪氨酸激酶受体trkA的mRNA。NGF在体外诱导脑膜细胞中trkA的快速酪氨酸磷酸化。NGF不刺激原代脑膜细胞增殖,但诱导突起生长。p75-和trkA-免疫反应脑膜细胞长的过程中,类似于神经生长因子处理的细胞在体外,是丰富的瘢痕组织,形成在大鼠和猫的脊髓病变。这些数据表明,神经生长因子,这是在脑和脊髓病变后,在增加的水平表达,可能参与在损伤的中枢神经系统瘢痕形成。
Nerve growth factor (NGF) induces the differentiation and supports the survival of subpopulations of neurons in the PNS and CNS. Here we report that meningeal cells in the pia mater express immunoreactivity and mRNA for both known NGF receptors, the low-affinity receptor p75 and the tyrosine kinase receptor trkA. NGF induces rapid tyrosine phosphorylation of trkA in meningeal cells in vitro. NGF does not stimulate proliferation of primary meningeal cells but induces process outgrowth. p75- and trkA-immunoreactive meningeal cells with long processes, resembling NGF-treated cells in vitro, are abundant in the scar tissue that forms at spinal cord lesions in rat and cat. These data suggest that NGF, which is expressed at increased levels in the brain and spinal cord after lesions, may be involved in scar formation in the injured CNS.
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