...
【24h】

Binding of ATP to nerve growth factor: characterization and relevance for bioactivity.

机译:ATP与神经生长因子的结合:生物活性的表征和相关性。

获取原文
获取原文并翻译 | 示例
           

摘要

Growth factors and their mechanisms of action have been studied extensively. However, it remained widely unrecognized that binding of ATP to growth factors is a prerequisite for their bioactivity. Here we demonstrated the binding of ATP to nerve growth factor (NGF) as well as its relevance for neuroprotection. By using mass spectrometry-based methodology we identified one or two molecules of ATP as being bound to NGF. To test neuroprotective activity of NGF we used primary cultures of rat cortical neurons damaged by staurosporine. ATP was indispensable for the neuroprotective effect of NGF. When the ATP concentration in the culture medium was reduced below approximately 2 nM by adding alkaline phosphatase (AP) or ATPase the neuroprotective activity of NGF was abolished. Site-directed mutagenesis within the heparin-binding domain (HBD) of NGF abolished ATP-binding and the neuroprotective effect. Thus, NGF has to bind ATP to be capable of protecting neurons.
机译:生长因子及其作用机理已被广泛研究。然而,仍然广泛地不认识到ATP与生长因子的结合是其生物活性的先决条件。在这里,我们证明了ATP与神经生长因子(NGF)的结合及其与神经保护的相关性。通过使用基于质谱的方法,我们确定了一个或两个ATP分子与NGF结合。为了测试NGF的神经保护活性,我们使用了被星形孢菌素破坏的大鼠皮质神经元的原代培养物。 ATP对于NGF的神经保护作用必不可少。通过添加碱性磷酸酶(AP)或ATPase将培养基中的ATP浓度降低至大约2 nM以下时,NGF的神经保护活性被取消。 NGF肝素结合域(HBD)内的定点诱变消除了ATP结合和神经保护作用。因此,NGF必须结合ATP才能保护神经元。

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号