炎症性肠道疾病风险基因C1ORF106调节肠道上皮细胞中的actin动态
Isabelle Hébert-Milette1,2, Chloé Lévesque1, Jean Paquette1
1Montreal Heart Institute Research Centre, 5000 rue Bélanger, Montreal, Quebec, Canada.
bioRxiv : the preprint server for biology
|March 31, 2025
概括
C1ORF106通过一种依赖ROCK的通路来控制actin动态来调节肠道屏障功能. 这一发现为炎症性肠病 (IBD) 和潜在的治疗点提供了新的见解.
科学领域:
- 细胞生物学 细胞生物学
- 胃肠病学 胃肠病学
- 遗传学 是一个遗传学.
背景情况:
- C1ORF106在遗传上与炎症性肠病 (IBD) 有关.
- 增加肠道透性是IBD的一个关键特征,甚至在临床症状出现之前.
- C1ORF106通过调节附着物和紧密结合来影响肠道屏障的透性,从而影响了actin组合.
研究的目的:
- 确定由C1ORF106及其IBD相关变体调节的途径.
- 探索C1ORF106在肠道上皮细胞内F-actin调节中的分子机制.
主要方法:
- 在人类结肠上皮细胞中对C1ORF106的KD.
- 在患者衍生的诱导多能干细胞 (hiPSC) 球形体中333F变异的表征.
- 通过免疫光,西部斑点和透性测试,评估屏障透性,行为动力学,细胞迁移和球形形成.
主要成果:
- C1ORF106 KD 损害了活性带动力学,应力纤维形成,细胞收缩,屏障透性,极性和迁移.
- 在C1ORF106KD细胞中,ROCK抑制挽救了actin带和细胞极性缺陷,表明了依赖ROCK的机制.
- 在C1ORF106KD细胞中观察到改变的nmMYO2-P局部和真空形隔间 (VAC),影响3D球形形成.
- 333F变体在hiPSC衍生的球形体中对细胞极性产生了类似的影响.
结论:
- C1ORF106控制着行为动态,以保持肠道上皮质的完整性.
- 这项研究阐明了涉及C1ORF106,ROCK和在IBD病变发生过程中的活性调节的分子机制.
- 这些发现突出了C1ORF106作为IBD的潜在治疗点.
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