染色体重塑因子CHD1在PTEN缺陷癌症中的合成实用性
Di Zhao1, Xin Lu1, Guocan Wang1
1Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.
Nature
|February 7, 2017
概括
研究人员确定了CHD1作为PTEN缺陷癌症的潜在治疗点. 削弱CHD1抑制了瘤生长,揭示了新的癌症途径和目标发现框架.
科学领域:
- 癌症学
- 分子生物学
- 遗传学
背景情况:
- 合成死亡率和附带死亡率是确定癌症治疗点的确立策略,特别是在瘤抑制基因被删除的癌症中.
- 在癌症基因组中选相互排斥的删除模式为发现合成-致命相互作用提供了一种新的方法.
研究的目的:
- 识别偶尔被删除但在特定瘤抑制剂缺陷的背景下是必不可少的"合成基因".
- 验证这些合成基因作为特定瘤抑制剂缺陷的潜在治疗点.
主要方法:
- 在癌症基因组中选相互排斥的删除模式.
- 在缺少PTEN的前列腺癌和乳腺癌细胞系中研究染色体酶DNA结合因子CHD1的耗尽.
- 研究PTEN-GSK3β-CHD1-β-TrCP通路及其在CHD1降解和TNF-NF-κB基因网络激活中的作用.
主要成果:
- 该研究确定了CHD1作为PTEN缺陷癌症中的假定合成必需基因.
- 在缺乏PTEN的前列腺癌和乳腺癌中,CHD1的消耗显著抑制了扩散,生存和瘤发生潜力.
- PTEN 缺乏导致CHD1稳定,通过组织蛋白修饰激活原瘤TNF- NF- kB通路.
结论:
- 在癌症中发现了一种涉及CHD1调节的新型PTEN途径,以及它对TNF-NF-κB网络的影响.
- 这项研究为在特定瘤抑制剂缺陷的癌症中发现"可追踪"的治疗点提供了一个框架,强调CHD1是PTEN缺陷瘤的有希望的点.
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