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HSF1驱动一个与热冲击不同的转录程序,以支持高度恶性的人类癌症
Marc L Mendillo1, Sandro Santagata, Martina Koeva
1The Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA.
Cell
|August 7, 2012
概括
热冲击因子1 (HSF1) 通过独特调节热冲击蛋白以外的基因驱动癌症. 这种HSF1癌症程序在瘤中活跃,与转移和患者死亡有关.
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:
- 热冲击因子1 (HSF1) 是热冲击反应的主调节器.
- HSF1与恶性转变,癌细胞存活率和增殖有关.
- 精确的转录网络HSF1控制恶性瘤及其与热冲击反应的联系仍未确定.
研究的目的:
- 定义特定于高度恶性细胞的HSF1调节的转录程序.
- 为了研究这个程序与正规的热冲击反应之间的关系.
- 评估该计划在人类癌症中的活性和预后意义.
主要方法:
- 对具有不同恶性潜力的细胞及其非转化对应细胞进行比较分析.
- 转录形状分析以识别HSF1受调节的基因.
- 在患者获得的瘤样本 (乳腺,结肠,肺) 中分析HSF1计划活动.
主要成果:
- 在高度恶性细胞中发现了一个HSF1调节的转录程序,与热冲击不同.
- 这种针对癌症的特定程序包括参与细胞循环调节,信号传递,新陈代谢,粘附和翻译的基因.
- 虽然热冲击蛋白 (HSP) 基因是该计划的一部分,但许多基因在恶性瘤中受到独特的调节.
- HSF1癌症计划在人类乳腺,结肠和肺部瘤中活跃,与转移和死亡率相关.
结论:
- 在瘤发生过程中,HSF1积极重新连接转录基因组,建立一个独特的癌症程序.
- 这项由HSF1驱动的计划对癌症转移和患者存活有重大预后影响.
- 这些发现表明,针对HSF1癌症计划的潜在治疗策略.
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