突触内和突触外NMDA受体共激活导致神经元细胞死亡

来源 :2013第四届国际神经科技大会 | 被引量 : 0次 | 上传用户:wuhaha_123
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  目前的主导理论主张突触内和突触外NMDA受体在介导神经元细胞死亡中起着截然相反的作用:激活突触内受体有利于细胞生存:激活突触外受体导致细胞死亡。然而,以往的若干研究工作表明此理论有局限性。我们的数据证实单独激活突触内或突触外受体并不导致细胞死亡,反而导致与存活相关的信号传导系统上调。我们进一步发现细胞死亡与突触内和突触外NMDA受体共激活的程度及时程成正比。基因组芯片的结果表明单独激活突触内或突触外NMDA受体导致类似基因转录的变化。这些试验结果有助于对神经元细胞死亡机理有新的认识。
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