原型瘤基因bcl-2可以选择性地从亡中拯救依赖神经营养因子的神经元
T E Allsopp1, S Wyatt, H F Paterson
1School of Biological and Medical Sciences, St. Andrews, Fife, Scotland.
Cell
|April 23, 1993
概括
bcl-2基因产物可以防止某些神经元的亡,但不是所有的神经元. 存在不同的神经元死亡途径,受到特定神经营养因子的影响.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 亡对于在发育过程中调节细胞数量至关重要.
- bcl-2基因产物抑制了髓状细胞和淋巴状细胞中的亡.
- 了解bcl-2在神经元细胞死亡中的作用至关重要.
研究的目的:
- 研究bcl-2在预防神经元亡中的作用.
- 为了确定bcl-2是否可以拯救神经元从因神经营养因子剥夺引起的死亡.
- 为了识别不同的神经元死亡途径.
主要方法:
- 在胚胎神经元中微注射bcl-2表达向量.
- 剥夺神经营养因子以诱导亡.
- 感觉神经元暴露于纤毛神经变因子 (CNTF).
主要成果:
- bcl-2拯救了依赖神经生长因子家族成员的感觉神经元.
- bcl-2没有挽救依赖于纤毛神经营养因子 (CNTF) 的纤毛神经元.
- 在CNTF暴露后,感觉神经元对bcl-2产生了耐药性.
结论:
- 至少有两种不同的神经元死亡途径存在.
- 神经细胞亡对bcl-2的敏感性取决于涉及的特定神经营养因子.
- 这些发现凸显了神经元生存和死亡调节的复杂性.
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