c-Myc蛋白的致癌活性需要使用Max进行二分化
1Growth Control and Development Laboratory, Imperial Cancer Research Fund, Lincoln's Inn Fields, London, England.
Cell
|January 29, 1993
概括
迈克和马克斯蛋白对细胞生长至关重要. 这项研究表明,Max结合对Myc是必不可少的.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
背景情况:
- c-Myc (Myc) 和Max蛋白质形成二极体,通过基本螺旋环-螺旋环-氨酸拉链 (b-HLH-LZ) 纹理结合DNA.
- 了解Myc同位体与Myc-Max异位体在细胞转化中的特定作用至关重要.
研究的目的:
- 调查Max结合对Myc转化活动的关键性.
- 阐明Myc同极体和Myc-Max异极体的功能作用.
- 探索Max与Myc.相关的抑制和激活功能.
主要方法:
- 基因操纵以创造具有改变二分化特性的Myc和Max突变体.
- 互补突变的共同表达,以评估转化活动的恢复.
- 对HLH-LZ交换突变体的主导负面影响的分析.
- 野生型马克斯抗作用于Myc功能的剂量依赖性研究.
主要成果:
- Myc与Max的结合对其转化活动至关重要;Myc的同位素是不活跃的.
- 互补的Myc和Max突变在共同表达时恢复了转化活动.
- HLH-LZ交换突变对野生类型的Myc.表现出主导负效应.
- 野生类型的Max对抗Myc功能,同时作为抑制剂和激活剂.
结论:
- 马克斯结合对于Myc介导的细胞转化是不可或缺的.
- Myc 和 Max 的二元化接口决定了它们的功能结果.
- 马克斯在调节Myc活动方面起着双重作用,影响细胞生长控制.
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