纤维拉林通过EZH2-介导的涂表达的调制来调节上皮质完整性
Santam Saha1, Balaji A K1, Sweety Meel2
1B-216, Chromosome Biology Lab (CBL), Biology, Indian Institute of Science Education and Research (IISER), Dr. Homi Bhabha Road, Pashan, 411008 Pune, Maharashtra, India.
Cell reports
|November 26, 2025
概括
纤维素 (FBL) 通过调节细胞粘附来保护上皮质完整性. FBL损失通过FBL-EZH2轴促进上皮质-介质细胞过渡 (EMT) 和转移,影响Scribble表达.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 纤维素蛋白 (FBL) 是一个关键的核蛋白,参与rRNA生物发生.
- 表皮完整性对于组织功能至关重要,并通过细胞对细胞的粘附和极性来维持.
- 皮质-介质细胞过渡 (EMT) 是一种涉及癌症转移的过程.
研究的目的:
- 调查纤维拉林 (FBL) 在维持上皮质完整性的作用.
- 阐明FBL调节细胞粘附和极性的分子机制.
- 探索乳腺上皮细胞中FBL,EZH2和EMT之间的联系.
主要方法:
- 在FBL枯竭后进行RNA测序 (RNA-seq).
- 染色体免疫沉 (ChIP) 试验用于评估H3K27me3沉积.
- 西方涂抹和免疫光被用来分析蛋白质水平和局部化.
主要成果:
- FBL的枯竭导致了粘附和顶膜组织通路的放松.
- FBL损失导致SCRIB促进体上H3K27me3的增加,这是由于EZH2的核细胞到核等离子体转移.
- 通过抑制Scribble,增加介质酶因子,并激活Akt,FBL枯竭诱导EMT.
结论:
- 纤维素素 (FBL) 对于通过调节像Scribble这样的细胞-细胞粘附蛋白来维持上皮质完整性至关重要.
- 细胞核中的FBL-EZH2轴调节SCRIB表达并控制上皮质极性和EMT.
- 在维护上皮质完整性方面,FBL的作用突显了其作为转移中的治疗点的潜力.
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