整合性蛋白质组学和质子PTMomics研究对JIB-04的抗TNBC效应
Shengna Tao1,2, Jingli Guo2,3, Jingdan Zhang4,5
1Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China.
概括
一种表观遗传抑制剂JIB-04,通过影响DNA损伤反应,细胞循环停止和细胞亡,对三阴性乳腺癌 (TNBC) 显示出有前途. 这项研究揭示了其分子机制,为TNBC提供了新的治疗选择.
科学领域:
- 在瘤学瘤学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
背景情况:
- 三阴性乳腺癌 (TNBC) 由于其侵袭性质和有限的治疗选择,提出了重大的临床挑战.
- 表观遗传修饰,特别是基因组标记,在癌症的发展和进展中起着至关重要的作用.
- 基因组 lysine 脱甲基酶 (KDM) 是 TNBC 的新兴治疗点,其中 JIB-04 显示了临床前的抗癌活性.
研究的目的:
- 阐明KDM抑制剂JIB-04在TNBC中抗瘤作用的分子机制.
- 在JIB-04治疗后,全面描述基因素翻译后修饰 (PTM) 和蛋白质表达特征的变化.
- 在TNBC细胞中识别由JIB-04调节的关键信号通路.
主要方法:
- 组 histone PTMomics 和定量蛋白质组的综合分析.
- 鉴定和定量差异表达的质子 PTM 位点和蛋白质.
- 路径丰富分析以确定受影响的信号级联.
主要成果:
- JIB-04治疗改变了14个基因组PTM位点,包括新发现的H3K79me2和H3K9ac.
- 定量蛋白质组学揭示了904种不同表达的蛋白质 (495种上调,409种下调).
- 路径分析表明,JIB-04.4对DNA损伤反应 (DDR) 的显著调节.
结论:
- JIB-04有效调节DNA损伤反应,诱导细胞循环停止,并促进TNBC中的亡.
- 这项研究为JIB-04的抗癌活性提供了新的机制性见解.
- JIB-04代表了TNBC治疗的有希望的治疗候选者.
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