EGF,TGF-α和安菲瑞古林不同调节子宫内膜衍生的介质细胞/干细胞
Rimma Sergeevna Kamentseva1, Marianna Viktorovna Kharchenko1, Gulnara Vladikovna Gabdrahmanova1
1Institute of Cytology of the Russian Academy of Sciences, Tikhoretsky Ave. 4, St. Petersburg 194064, Russia.
International journal of molecular sciences
|September 9, 2023
概括
表皮生长因子受体 (EGFR) 信号传递在干细胞和癌细胞之间有所不同. 像EGF和TGF-α这样的配体对干细胞增殖和EGFR降解的影响不同于HeLa细胞.
科学领域:
- 细胞生物学 细胞生物学
- 分子信号传输的方法
- 干细胞生物学 干细胞生物学
背景情况:
- 表皮生长因子受体 (EGFR) 信号传递对细胞功能至关重要.
- 通过连接体对EGFR的调节决定了信号特异性和受体命运.
- 在未被转化的多能干/干细胞 (MSC) 中,EGFR的功能比在不朽的细胞系中了解得更少.
研究的目的:
- 比较EGFR连接体 (EGF,TGF-α,AREG) 对子宫内膜MSC (enMSC) 和HeLa细胞的影响.
- 研究由这些配体刺激的EGFR内部化和降解途径.
- 阐明MSC和永生细胞之间的EGFR稳态的差异.
主要方法:
- 西方涂抹测试以评估蛋白质水平.
- 对焦显微镜用于可视化EGFR局部化.
- 用EGF,TGF-α和AREG对EnMSC和HeLa细胞进行治疗.
主要成果:
- 通过EGFR,EGF和TGF-α,但不是AREG,促进了enMSC的增殖,并抑制了树叶分化.
- 在HeLa细胞中,EGF诱导EGFR降解,而TGF-α促进循环.
- 无论是EGF还是TGF-α都诱导了EnMSC中的EGFR降解,与HeLa细胞相比,恢复速度较慢.
- 在任何一种细胞类型中,AREG都没有诱导EGFR内部化.
结论:
- 与HeLa细胞相比,EGFR信号传递和稳态在enMSC中表现出不同的机制.
- 体特异性EGFR贩运 (降解与回收) 在细胞类型之间有所不同.
- 在MSC中EGFR稳态延长,这表明独特的调节过程.
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