氧马可以通过向DSG2来改善表皮屏障功能来改善性结肠炎
Pengyan Li1, Xin Jin1, Yi Li1
1School of Chinese Materia Medica, Tianjin Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, and State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
氧马 (OMT) 通过稳定desmoglein-2 (Dsg2) 有效地治疗性结肠炎 (UC). 这种作用抑制Dsg2裂变和caspase-8活性,改善肠上皮质屏障功能并减少炎症.
科学领域:
- 药理学 药理学是指药理学的学科.
- 胃肠病学 胃肠病学
- 分子生物学分子生物学
背景情况:
- 来自Sophora flavescens Ait.的oxymatrine (OMT) 在性结肠炎 (UC) 治疗中表现有前途.
- 在UC中OMT疗效的基础上的精确分子机制在很大程度上仍未被探索.
研究的目的:
- 在慢性UC小鼠模型中评估OMT的治疗潜力.
- 阐明OMT发挥治疗作用的分子机制.
主要方法:
- 使用慢性UC小鼠模型来评估OMT和Sophora flavescens Ait. 水提取物 (WSF).水提取物 (WSF).
- 采用蛋白质组分析,细胞亡模型 (HCT116,Caco-2) 和生物物理技术 (CETSA,DARTS,MST) 来识别和验证OMT目标.
- 研究了OMT对肠上皮屏障 (IEB) 功能及其代谢物母体 (MAT) 的影响.
主要成果:
- OMT和WSF表现出显著的治疗效果,通过减少炎症和增强IEB功能来减轻UC.
- 蛋白质组分析确定了desmoglein-2 (Dsg2) 作为UC中关键的上调调节蛋白.
- OMT直接与Dsg2结合,使其稳定并抑制酶-8介导的裂变,从而改善细胞粘附和IEB完整性.
结论:
- 在性结肠炎 (UC) 的背景下,Desmoglein-2 (Dsg2) 被确定为Oxymatrine (OMT) 的直接分子标.
- 在UC中OMT的治疗效益源于它能够结合Dsg2,抑制caspase-8活性,减少Dsg2裂变,并恢复肠上皮质屏障功能.
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