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由表皮Fabp6引起的肠道失生症基因干扰加剧肠道炎症疾病

Kyeongeun Kwon^1,2, Minyoung Kim³, Youngrak Jung⁴

¹Department of Biomedical Sciences, Yonsei University College of Medicine, Seoul 03722, Korea.

|November 12, 2025

概括

胆汁脂结合蛋白 (Ilbp) 缺乏会破坏胆汁酸平衡,导致肠道失调并加剧肠道炎症. 恢复特定的细菌和胆汁酸可以改善这些影响,突出显示肠道屏障功能与炎症性疾病之间的联系.

科学领域:

胃肠病学和肝病学胃肠学和肝病学
微生物学和免疫学
分子和细胞生物学分子和细胞生物学

背景情况:

由*Fabp6*基因编码的皮质脂结合蛋白 (Ilbp) 对于胆汁酸 (BA) 运输和肠道内平衡至关重要.
在肠道炎症中Ilbp缺乏的确切作用和潜在的机制仍然不太清楚.

研究的目的:

为了研究肠道ILBP缺乏症的病理生理后果.
探索Fabp6*基因淘汰对肠道微生物群和炎症反应的影响.
为了确定与ILBP缺乏相关的肠道炎症的潜在治疗策略.

主要方法:

生成的肠上皮细胞 (IEC) 特定的 *Fabp6* 淘汰赛小鼠 (*Fabp6* ^ΔIEC).
在 *Fabp6*^ΔIEC小鼠中使用硫酸 (DSS) 诱导的肠道炎症.
利用便微生物群移植 (FMT) 和共同住房实验.
进行了元基因组学分析,以描述肠道微生物群的组成.
给 *Ligilactobacillus murinus* 和 taurodeoxycholic 酸 (TDCA) 用来评估治疗效果.

主要成果:

*Fabp6*^ΔIEC小鼠与对照小鼠相比,表现出严重的DSS诱导的肠道炎症.
来自*Fabp6*^ΔIEC小鼠的FMT传播了炎症表型,而共同住房减轻了它们.
甲基因组分析显示,在Fabp6*小鼠中,Ligilactobacillus murinus的显著减少.
口服*L. murinus*或TDCA通过恢复表皮屏障完整性和减少促炎细胞因子 (IL-1β,IL-6,TNF-α) 来改善DSS诱导的大肠炎.

结论:

表皮 *Fabp6* 删除会破坏 BA 稳态,导致肠道失生症,其特征是减少 *L. murinus* 丰度.
这种失生症通过损害肠道屏障功能,使宿主易患炎症性肠病 (IBD).
恢复特定的肠道细菌 (*L. murinus*) 或BA (TDCA) 是与Ilbp缺乏相关的肠道炎症的潜在治疗方法.

关键词:

胆酸是什么意思胆酸是什么意思大肠炎是什么意思脂肪酸结合蛋白 6 脂肪酸结合蛋白炎症性肠道疾病炎症性肠道疾病微生物组是一个微生物组.

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