NFATc3和PML协同调节瘤相关基因表达以SUMOylation-Independent的方式
Ting Kang1, Ruizhe Huang1, Ruiheng Wang2
1Department of Oncology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200092, China.
Biochimie
|September 10, 2025
概括
在癌症中,激活T细胞3核因子 (NFATc3) 和原血细胞白血病蛋白 (PML) 之间的相互作用是独立于SUMOylation的. 这个轴调节Lgr5和Olfm4,硫化物显示出作为调节器的潜力.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 细胞信号传递 细胞信号传递
背景情况:
- 激活T细胞核因子3 (NFATc3) 与癌症进展有关.
- 亲细胞白血病蛋白 (PML) 是一种参与转录调节的瘤抑制剂.
- 尚不清楚NFATc3和PML之间的相互作用,特别是关于SUMOylation的相互作用.
研究的目的:
- 研究NFATc3和PML之间的相互作用.
- 确定SUMOylation在NFATc3-PML相互作用中的作用.
- 阐明NFATc3-PML轴对下游目标基因的影响,并探索潜在的治疗调制.
主要方法:
- 在体外测试包括质谱和共免疫沉 (Co-IP).
- 产生SUMOylation缺陷突变 (氨酸替代氨酸) 对于PML和NFATc3.c两个.
- 染色体免疫沉 (ChIP) 和定量实时PCR (qRT-PCR) 用于评估基因表达.
- 用硫化 (As4S4) 进行药理治疗.
主要成果:
- NFATc3和PML之间的相互作用独立于PML的SUMOylation状态.
- 在NFATc3 SUMOylation位点的突变并没有改变其与PML的结合.
- NFATc3-PML轴调节下游基因Lgr5和Olfm4.4的表达.
- 协同表达NFATc3和PML协同升级调节Lgr5和Olfm4.
- 硫化处理减弱了Lgr5和Olfm4.4的协同上调.
结论:
- NFATc3-PML的相互作用并不依赖于SUMOylation.
- 该NFATc3-PML复合体调节关键的癌症相关基因Lgr5和Olfm4.
- 硫化调节NFATc3-PML轴,表明在癌症治疗中具有治疗潜力.
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