叶酸通过PI3K/AKT/NF-κB/MLCK轴的抑制减轻性结肠炎,恢复肠壁的完整性
Shize Zhang1, Tian Cheng1, Yuang Chen1
1Jiangsu Provincial Key Laboratory of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.
Biology
|November 27, 2025
概括
叶酸作为抗性结肠炎 (UC) 的保护因素. 在大肠炎模型中补充叶酸可以减少疾病的严重程度,并通过向特定的分子通路恢复肠道屏障功能.
科学领域:
- 胃肠病学 胃肠病学
- 营养科学 营养科学
- 分子生物学分子生物学
背景情况:
- 维生素平衡对于管理炎症性肠病 (IBD) 至关重要.
- 维生素在IBD病原和治疗中的确切作用尚未完全理解.
- 以前的研究表明,维生素水平与IBD之间存在潜在联系,但机制尚不清楚.
研究的目的:
- 研究叶酸在性结肠炎 (UC) 中的保护作用.
- 阐明叶酸影响肠道屏障完整性的分子机制.
- 在大肠炎的临床前模型中评估叶酸补充剂的治疗潜力.
主要方法:
- 两个样本的门德尔随机化分析,以确定与循环维生素水平的遗传关联.
- 在体内研究中使用了德克斯硫酸 (DSS) 诱导的大肠炎小鼠模型.
- 在体外模型中使用由TNF-α/IFN-γ刺激的上皮细胞,以及用于机械分析的RNA测序和免疫阻塞.
主要成果:
- 门德尔的随机化确定了叶酸作为对UC的保护.
- DSS诱导的大肠炎小鼠的血清叶酸水平降低;叶酸补充改善了疾病严重程度和炎症.
- 叶酸补充恢复了上皮质屏障的完整性和功能,无论是体内还是体外.
- 叶酸抑制PI3K/AKT/NF-κB/MLCK/MLC2信号通路,调解屏障的恢复.
结论:
- 叶酸在性结肠炎中起着重要的保护作用.
- 叶酸补充剂通过恢复肠道屏障功能来证明UC的治疗潜力.
- PI3K/AKT/NF-κB/MLC2通路是叶酸对肠道有益作用的关键分子标.
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