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Updated: Jul 22, 2025

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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
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一个p53/LINC00324正反循环通过抵消SET介导的转录抑制来抑制瘤生长
Ling Zhang1, Jun Zhang2, Xiaofeng Xuan3
1Center for Translational Medicine, The Affiliated Zhangjiagang Hospital of Soochow University, Suzhou Medical College of Soochow University, 68 Jiyang West Road, Suzhou 215600, China.
Cell reports
|July 22, 2023
概括
瘤抑制剂p53调节了基因转录. 这项研究确定了LINC00324,一个长非编码RNA,作为直接的p53点,增强p53活性,抑制瘤生长并改善患者的存活率.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 通过转录调节,p53瘤抑制剂对抗瘤功能至关重要.
- 长非编码RNAs (lncRNAs) 在瘤发生中起着重要作用,作为瘤基因或瘤抑制剂.
研究的目的:
- 确定和描述长非编码RNA LINC00324作为p53.3的直接转录标.
- 阐明LINC00324影响p53活性和瘤生长的机制.
主要方法:
- 通过转录分析确定LINC00324作为p53点.
- 在体外结合测定以确认LINC00324和p53.5之间的直接相互作用.
- 评估LINC00324对p53的交换活化和表观遗传修饰 (乙化) 的影响.
- 对LINC00324表达与临床癌症数据的相关性分析.
主要成果:
- LINC00324是p53.3的直接转录标.
- Knockdown 的 LINC00324 促进瘤生长; 宫外表达抑制它.
- LINC00324直接与p53结合,并破坏了p53-SET的相互作用.
- LINC00324通过增加H3K18/H3K27在目标促进体中的乙化来增强p53的交换活化.
- 低LINC00324表达与侵袭性癌症和低生存率相关.
结论:
- 一个新的p53/LINC00324正反循环抑制瘤生长.
- LINC00324对抗SET介导的转录抑制,增强p53的瘤抑制作用.
- 在癌症中,LINC00324代表了一个潜在的治疗标和预后生物标志物.
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