单细胞转录组学预测了在缺血受损肠道中急性上皮质还原的新型潜在调节剂
Elizabeth C Rose1, Jeremy M Simon2,3, Ismael Gomez-Martinez4
1Department of Population Health and Pathobiology, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, United States.
概括
患有肠道损伤的新生猪显示屏障修复功能受损,但幼猪组织可以帮助. 殖民地刺激因子-1 (CSF-1) 被确定为促进肠道恢复和屏障功能的关键因素.
科学领域:
- 胃肠病学和肝病学
- 发育生物学 发展生物学
- 再生医学是一种再生医学.
背景情况:
- 肠道缺血性损伤损害了上皮屏障,增加了败血症的风险,特别是在新生儿中,由于年龄相关的恢复差异.
- 以前的研究表明,幼猪粘膜组织可以拯救新生猪的肠道屏障缺陷,但潜在的机制尚不清楚.
研究的目的:
- 通过基因表达模式识别恢复性肠细胞,并预测年龄依赖性肠道恢复的上游调节者.
- 调查殖民地刺激因子-1 (CSF-1) 在缺血损伤后肠壁修复中的作用.
主要方法:
- 幼猪中从恢复性缺血性阴中获得的表面粘膜上皮细胞的单细胞转录组学.
- 在肠道缺血损伤的猪模型中,对预测的上游调节剂,特别是CSF-1的验证.
- 在上皮细胞和功能测定中CSF-1和CSF1R的免疫组织化学同位化 (体外阻塞,体外救援).
主要成果:
- 恢复性肠细胞的一个子集群表现出细胞迁移途径的表达,预测了CSF-1的调节.
- 在依赖年龄的方式,CSF-1表达是由缺血引起的;CSF-1和CSF1R在幼猪的伤口邻近的细胞中同定位.
- 在试验室中,CSF-1 阻断损害了复原,而在受伤的新生猪中,CSF-1 管理改善了ex vivo的屏障功能.
结论:
- 这项研究验证了一种新的方法,用于识别和预测肠道缺血性损伤中表皮质还原的上游调节者.
- 殖民地刺激因子-1 (CSF-1) 成为改善肠损伤新生儿治疗结果的潜在治疗点.
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