通过向TRAF6蛋白的稳定性和影响肠道微生物群,ASB3表达加剧了炎症性肠病
Mingyang Cheng1,2,3,4, Bin Xu5, Yu Sun1,2,3,4
1College of Veterinary Medicine, Jilin Agricultural University, Changchun, China.
mBio
|August 20, 2024
概括
安基林重复和SOCS盒含蛋白3 (ASB3) 通过破坏TRAF6.6的稳定性来促进炎症性肠病 (IBD). 在肠道细胞中抑制ASB3可能为结肠炎提供一种新的治疗策略.
科学领域:
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
- 胃肠病学 胃肠病学
背景情况:
- E3 泛基因酶通过泛基因化调节炎症反应.
- 安基林重复和SOCS盒子含有蛋白3 (ASB3) 已知在癌症中具有免疫调节作用.
- ASB3在炎症性肠病 (IBD) 发病过程中的作用,特别是它与肠道微生物群的相互作用,仍然不清楚.
研究的目的:
- 研究ASB3在炎症性肠病 (IBD) 的发展和进展中的作用.
- 阐明ASB3影响结肠炎症和肠道微生物群的分子机制.
- 评估ASB3作为大肠炎的潜在治疗点.
主要方法:
- 系统地确定ASB3作为IBD中的调节器.
- 在IBD患者病变和ASB3淘汰赛 (ASB3-/-) 小鼠模型中分析ASB3表达.
- 评估结肠炎的严重程度,炎症标志物 (IL-1β,IL-6,TNF-α),IκBα酸化和TRAF6在肠道上皮细胞和器官中无处不在的评估.
- 通过共菌微生物转移和抗生素治疗来操纵微生物群.
主要成果:
- 在IBD病变中,ASB3表达显著上调.
- ASB3-/-小鼠对硫酸德克斯诱导的大肠炎具有耐药性,表现出炎症减少和促炎性细胞因子的产生.
- 缺少ASB3可以防止结肠炎,这种影响取决于肠道微生物群.
- 在肠道上皮细胞中,ASB3特别催化K48结合的多基化和TRAF6的降解,促进异常NF-κB激活和微生物群失衡.
结论:
- 在IBD的发展和进展中,ASB3充当了促进性监管者.
- ASB3 破坏了 TRAF6 的稳定性,导致炎症增加并加剧大肠炎.
- 在肠上皮细胞中准ASB3为治疗大肠炎和IBD提供了潜在的新疗法策略.
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