通过PERK-eIF2α-ATF4-CHOP通路对小鼠肠道上皮质结构的发展产生 (Epi) 甲基素损伤的影响
Shijie Guo1, Weiwei Huang1, Qingqing Cao2
1School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China. yqin@zjgsu.edu.cn.
Food & function
|July 5, 2023
概括
在植物性食品中发现的高剂量的 (epi) 甲基素,可以通过诱导亡和压力来损害肠道细胞. 这项研究强调了 (epi) 甲素过度消费对肠道健康的潜在风险.
科学领域:
- 植物衍生生物活性化合物植物衍生生物活性化合物
- 胃肠道健康和疾病
- 细胞应激反应细胞应激反应
背景情况:
- () 甲基素是强大的植物化合物,与众多的健康益处有关.
- 需要进一步调查 (epi) 甲基因的潜在不良影响,特别是关于肠道健康.
- (epi) 甲基素对肠道上皮质结构和功能的影响在很大程度上仍然不清楚.
研究的目的:
- 使用体外模型研究四种主要 (epi) 甲基素对肠道上皮质结构的影响.
- 为了阐明底层的分子机制 (epi) 甲素诱导的肠上皮损伤.
- 评估 (epi) 甲基素对肠道修复的 in vivo 影响.
主要方法:
- 使用肠道有机体作为体外模型来评估形态变化,氧化应激和内质网膜 (ER) 应激.
- 向有机体施用了四种类型的 (epi) 甲基素 (EGCG,EGC,ECG,EC),并分析了剂量依赖的效应.
- 采用了一种PERK通路抑制剂GSK2606414,以证实PERK-eIF2α-ATF4-CHOP通路的作用.
- 在肠道炎症小鼠模型中验证的发现,以评估对肠道修复的影响.
主要成果:
- (Epi)catechins促进了肠道上皮细胞亡,并以剂量依赖的方式诱导了氧化和ER压力.
- 观察到的损伤因 (epi) 甲基因结构而异,EGCG > EGC > ECG > EC.
- 鉴定出PERK-eIF2α-ATF4-CHOP通路是 (epi) 甲素诱导的肠损伤的关键调解者.
- 在肠道炎症的小鼠模型中, (Epi) catechins显著延迟了肠道修复.
结论:
- 过度消费 (epi) 甲基素可以对肠道上皮产生有害影响.
- 过度摄入 (epi) 甲基素可能会增加肠道损伤的风险,并损害修复机制.
- 了解 (epi) catechin 毒性的剂量依赖性和结构细微差别对于评估它们在饮食环境中的安全性至关重要.
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