首页> 外文期刊>Cell biology international. >Activation of RASSF2A by p300 induces late apoptosis through histone hyperacetylation.
【24h】

Activation of RASSF2A by p300 induces late apoptosis through histone hyperacetylation.

机译:p300对RASSF2A的激活通过组蛋白超乙酰化诱导后期凋亡。

获取原文
获取原文并翻译 | 示例
           

摘要

Both RASSF2A (Ras-associated family 2A) and p300 are implicated in apoptosis. However, little is known about the interrelationship between these two proteins in induction of apoptosis. Here we show that p300 was able to induce late apoptosis through up-regulation of RASSF2A in human gastric cancer cells SGC-7901 (p53-mutant). Our data demonstrated that p300 stimulated RASSF2A expression in 293T cells in cooperation with the transcription factor Sp1. Results of ChIP (chromatin immunoprecipitation) assays revealed that p300 induced histones H3 and H4 hyperacetylation at RASSF2A promoter. Moreover, p300 and Sp1 reciprocally facilitated their binding to RASSF2A promoter. Overall, data arising from this study indicate that Sp1-mediated RASSF2A gene transcription is activated by p300 through histone acetylation, and this activation plays an important role in inducing late apoptosis.
机译:RASSF2A(与Ras相关的家族2A)和p300均与细胞凋亡有关。然而,关于这两种蛋白在诱导细胞凋亡中的相互关系知之甚少。在这里,我们显示p300能够通过上调人胃癌细胞SGC-7901(p53突变体)中的RASSF2A诱导晚期细胞凋亡。我们的数据表明,p300与转录因子Sp1协同刺激了293T细胞中的RASSF2A表达。 ChIP(染色质免疫沉淀)分析的结果表明,p300在RASSF2A启动子上诱导组蛋白H3和H4超乙酰化。此外,p300和Sp1相互促进了它们与RASSF2A启动子的结合。总体而言,这项研究得出的数据表明,p300通过组蛋白乙酰化激活了Sp1介导的RASSF2A基因转录,这种激活在诱导晚期细胞凋亡中起重要作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号