该v-rel瘤基因编码了一个kappa B增强剂结合蛋白,该蛋白抑制NF-kappa B功能
D W Ballard1, W H Walker, S Doerre
1Howard Hughes Medical Institute, Duke University Medical Center, Durham, North Carolina 27710.
Cell
|November 16, 1990
概括
研究人员确定了一个核因子kappa B (NF-kappa B) 结合蛋白的家族,包括与Rel相关的蛋白质. 这些蛋白质影响T细胞激活和基因转录,对病毒复制和癌症有影响.
科学领域:
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
背景情况:
- 核因子kappa B (NF-kappa B) 是一个转录因子,对免疫反应至关重要.
- NF-kappa B活动涉及一系列蛋白质,包括p50,p55,p75和p85,在T细胞激活过程中具有差异诱导.
研究的目的:
- 描述NF-kappa B蛋白家族及其与v-Relcoprotein的关系.
- 研究Rel相关蛋白在NF-kappa B介导基因转录中的作用.
主要方法:
- 对NF-kappa B增强剂结合活性的分析.
- 蛋白质家族成员 (p50,p55,p75,p85) 的特征及其DNA结合特性.
- 与v-Rel瘤蛋白的结构比较和c-Rel.的鉴定.
- 评估v-Rel对NF-卡帕B激活转录的作用.
主要成果:
- 确定了至少四种NF-kappa B结合蛋白 (p50,p55,p75,p85) 的家族,具有独特的特性.
- 建立了这些蛋白质和v-Rel瘤蛋白之间的结构关系,p85被确定为人类c-Rel.
- 证明v-Rel,但不是它的突变,抑制NF-kappa B-激活转录从特定的促进器 (IL-2受体α,HIV-1 LTR).
结论:
- 有一种与Rel相关的kappa B增强剂结合蛋白家族存在.
- v-Rel的转化活性可能与它抑制由NF-kappa B调节的细胞基因有关.
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