HSF1 drives a transcriptional program distinct from heat shock to support highly malignant human cancers.

HSF1 drives a transcriptional program distinct from heat shock to support highly malignant human cancers.
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DOI:
10.1016/j.cell.2012.06.031
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发表时间:
2012-08-03
期刊:
影响因子:
64.5
通讯作者:
Lindquist S
Lindquist S
中科院分区:
生物学1区
文献类型:
--
作者:
Mendillo ML;Santagata S;Koeva M;Bell GW;Hu R;Tamimi RM;Fraenkel E;Ince TA;Whitesell L;Lindquist S

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热休克因子1(HSF1)是热休克反应的主要调节者,在模型系统中促进肿瘤细胞的恶性转化、生存和增殖。通常的假设是,这些效应是通过调节热休克蛋白(HSP)的表达来介导的。然而,HSF1在恶性肿瘤中直接协调的转录网络及其与热休克反应的关系从未被确定。通过将具有高和低恶性潜能的细胞与未转化的细胞进行比较,我们确定了HSF1调节的转录程序,该程序针对高度恶性的细胞,与热休克不同。该计划中的癌症特异性基因支持致癌过程:细胞周期调节、信号、新陈代谢、黏附和翻译。热休克蛋白基因是这一程序中不可或缺的一部分,然而,许多基因在恶性肿瘤中受到独特的调控。这种HSF1癌症计划在直接从人类患者中分离出来的乳腺癌、结肠癌和肺癌中活跃,并与转移和死亡密切相关。因此,HSF1在肿瘤发生中重新连接转录组,具有预后和治疗意义。
Heat-Shock Factor 1 (HSF1), master regulator of the heat-shock response, facilitates malignant transformation, cancer cell survival and proliferation in model systems. The common assumption is that these effects are mediated through regulation of heat-shock protein (HSP) expression. However, the transcriptional network that HSF1 coordinates directly in malignancy and its relationship to the heat-shock response have never been defined. By comparing cells with high and low malignant potential alongside their non-transformed counterparts, we identify an HSF1-regulated transcriptional program specific to highly malignant cells and distinct from heat shock. Cancer-specific genes in this program support oncogenic processes: cell-cycle regulation, signaling, metabolism, adhesion and translation. HSP genes are integral to this program, however, many are uniquely regulated in malignancy. This HSF1 cancer program is active in breast, colon and lung tumors isolated directly from human patients and is strongly associated with metastasis and death. Thus, HSF1 rewires the transcriptome in tumorigenesis, with prognostic and therapeutic implications.
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