另一个将MTA家族与乳腺癌联系在一起的纽带
1Department of Molecular and Cellular Oncology, The University of Texas M D Anderson Cancer Center, Houston, TX 77030, USA.
Cell
|April 23, 2003
概括
雌激素受体 (ER) 信号提升MTA3,一个NuRD复合组件,它准了牛基因. 这种机制影响乳腺瘤中的E-cadherin抑制和上皮细胞转变为介质细胞.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 细胞生物学 细胞生物学
背景情况:
- 皮质转介质过渡 (EMT) 对于癌症的进展和转移至关重要.
- 雌激素受体 (ER) 信号在人类乳腺瘤的发展和进展中起着重要作用.
- NuRD复合体是一个多个子单元的蛋白质复合体,参与基因调节和染色质重塑.
研究的目的:
- 研究MTA3在雌激素依赖基因调节中的作用.
- 在ER信号的背景下,确定MTA3的直接目标.
- 阐明ER状态影响乳腺癌EMT的机制.
主要方法:
- 西方涂抹用于分析蛋白质水平.
- 染色体免疫沉 (ChIP) 测试用于确定基因标.
- 报告员测试以评估基因调节.
- 免疫光学研究蛋白质定位.
主要成果:
- MTA3被确定为NuRD复合物的雌激素依赖成分.
- 牛基因被证实是MTA3.3的直接转录标.
- 经证实,ER信号可以对MTA3进行上调,从而导致牛介导的E-cadherin抑制的负调节.
- 这些分子事件与人类乳腺瘤中EMT的控制有关.
结论:
- 在调节EMT时,MTA3充当ER信号的关键调解者.
- MTA3-Snail-E-cadherin轴提供了ER状态和EMT之间的分子联系.
- 准这种途径可能为乳腺癌治疗提供新的治疗策略.
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