由HIF-1α调解的代谢功能障碍有助于表皮分化缺陷在eosinophilic食道炎
Sinéad Ryan1, Louise Crowe1, Sofía N Almeida Cruz1
1Allergy, Inflammation, and Remodeling Research Laboratory, Department of Biology, National University of Ireland, Maynooth, Ireland; Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Ireland.
性食道炎 (EOE) 涉及与细胞代谢改变相关的上皮功能障碍. 低氧诱导因子-1α (HIF-1α) 缺乏会损害糖解,促进氧化酸化,并阻碍食道上皮的分化.
科学领域:
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 表皮细胞代谢在过敏性炎症和eosinophilic食道炎 (EOE) 病原发生过程中至关重要.
- 低氧诱导因子 (HIF) - 1α 缺乏导致食道上皮功能障碍.
- 在EoE中调节食道上皮代谢中的HIF-1α的特定作用仍未得到充分研究.
研究的目的:
- 研究HIF-1α介导的代谢功能障碍在食道上皮的分化中的作用.
- 检查EoE对上皮质屏障功能的影响.
- 为了定义EoE食道上皮的代谢变化.
主要方法:
- 用EoE患者活检的RNA测序来分析代谢基因表达 (OXPHOS,糖解).
- 在细胞培养中进行海马生物能学分析,以评估表皮分化期间的代谢途径.
- 空气-液体界面培养物以确定对差异化的代谢依赖性.
主要成果:
- 在EoE患者中,氧化酸化 (OXPHOS) 基因的表达增加.
- 分化表皮不如未分化细胞更少依赖OXPHOS.
- HIF-1α倒置细胞显示分化标志物减少和OXPHOS增加,通过恢复HIF-1α功能来逆转.
结论:
- 在EoE中转向OXPHOS主导的新陈代谢与表皮分化受损有关.
- 这种代谢模式在很大程度上是由减少的依赖HIF-1α的糖解驱动的.
- 准HIF-1α介导的代谢途径可能为EoE提供治疗策略.
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