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紧结蛋白辛古林在人类子宫内膜腺体内膜腺癌中的作用
Arisa Kura1,2, Kimihito Saito1, Takumi Konno2
1Department of Obstetrics and Gynecology, Sapporo Medical University School of Medicine, Sapporo, Japan.
Tissue barriers
|June 3, 2024
概括
辛古林 (CGN) 是一种紧结蛋白,通过维持表皮屏障来抑制子宫内膜腺癌 (EEC) 恶性病变. 它的表达在EEC中减少,并受到雌激素和树皮细胞因子的影响.
科学领域:
- 细胞生物学 细胞生物学
- 癌症研究 癌症研究
- 分子生物学分子生物学
背景情况:
- 辛古林 (CGN) 是一种双细胞紧密结合分子,可以结合微管.
- CGN与三细胞紧结 (tTJ) 蛋白,脂解刺激的脂蛋白受体 (LSR) 和三细胞素 (TRIC) 相互作用.
- 在子宫内膜腺癌 (EEC) 恶性病时,CGN和LSR表达都会下降,但CGN的作用尚不清楚.
研究的目的:
- 研究CGN和tTJ蛋白在人类EEC细胞中的作用.
- 确定CGN在上皮屏障完整性,细胞增殖,迁移和入侵中的功能.
- 阐明 stromal 细胞,雌激素和生长因子对 EEC 中 CGN 表达和功能的影响.
主要方法:
- 在2D和2.5D培养中使用过度表达CGN的EEC细胞系 (Sawano).
- 使用siRNA进行了CGN淘汰,并分析了对上皮屏障,细胞行为和tTJ蛋白质的影响.
- 研究的分子通路 (MAPK,AMPK) 以及β-雌激醇,EGF,TGF-β和特定抑制剂的影响.
主要成果:
- 在tTJ和中心体与LSR和TRIC共局的CGN;CGN直接结合LSR,TRIC和β-tubulin.
- 降低CGN降低了表皮屏障功能,增强了扩散,迁移和入侵,类似于LSR的降低.
- 通过MAPK/AMPK通路减少了LSR和TRIC表达;在2.5D培养中观察到异常囊形成和透性增加.
- 雌激素和生长因子降低了CGN表达和屏障功能,增强了迁移,通过特定的抑制剂可以部分预防的效应.
结论:
- 与tTJ蛋白一起,CGN可能抑制人类的EEC恶性瘤.
- CGN的复杂相互作用对雌激素和树皮细胞衍生的生生长因子敏感.
- 在维持上皮质完整性和抑制EEC中恶性进展方面,CGN起着至关重要的作用.
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