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雄激素受体和MYC转录组在前列腺癌中的多层调节电路中保持平衡
Bin Fu1, Liyang Wang2,3, Tianwei Jia4,5,6
1Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, P.R.China.
The Prostate
|August 11, 2023
概括
雄激素受体 (AR) 和MYC表现出双重功能,通过激活和抑制调节基因表达. 它们的复杂相互作用对于前列腺癌 (PCa) 转录程序和信号传递至关重要.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 癌症研究 癌症研究
背景情况:
- 雄激素受体 (AR) 作为具有双重激活和抑制能力的转录因子.
- AR的转压效应与辅因子竞争和再分配有关.
- AR双重功能的例子是瘤性8q24-MYC区域的位置范围调节.
研究的目的:
- 研究雄激素受体 (AR) 和MYC在雄激素敏感细胞系中的复杂关系.
- 阐明AR在基因调节中的双重功能,特别是它与MYC的相互作用.
- 了解AR-MYC交叉对话在前列腺癌 (PCa) 发病过程中的影响.
主要方法:
- 使用定量实时PCR (RT-qPCR) 和公共RNA分析数据集来评估MYC转录.
- 分析了公开的ChIP-seq和RNA-Seq数据集,以评估AR-MYC的直接和间接签名.
- 生物信息学,染色体构造捕获 (3C) 试验和辅因子跟踪被用来检查AR基因位置调节和交叉对话.
主要成果:
- MYC转录表现出对雄激素的过敏和负反应,表明对AR的竞争功能.
- 发现AR和MYC的转录程序是双向的,广泛纠的,并且积极处于平衡状态.
- 无论是AR还是MYC基因位点都是通过表观遗传和染色体结构改变而被抑制的,PCa转录组在AR和MYC结合位点之间动态平衡.
结论:
- AR-MYC互动是广泛连接的,并有着复杂的组织.
- 这些相互作用补偿了必不可少的PCa转录程序.
- 在前列腺癌中,AR-MYC通路会中和过度信号.
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