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Impact of deoxynivalenol and kaempferol on expression of tight junction proteins at different stages of Caco-2 cell proliferation and differentiation

机译:脱辛维酚和kaempferol对Caco-2细胞增殖和分化不同阶段的紧密结蛋白表达的影响

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摘要

The barrier function of intestinal tract is essential to gut health, and the expression of tight junction (TJ) proteins in human epithelial colorectal adenocarcinoma (Caco-2) cells, mimicking the intestinal stem cell proliferation and differentiation, was investigated after treatment by the mycotoxin of deoxynivalenol (DON) and phenolic compound of kaempferol (KAM). The results showed that DON (5 mu M) significantly reduced the expression of claudin-4 while kaempferol (100 mu M) increased the expression of claudin-3 during Caco-2 cell proliferation. After being cultured for 11 days, the DON treatment, unexpectedly, augmented the expression of claudin-4 with an increased TEER. For differentiated Caco-2 cells after a 21 day culture, both the TEER and claudin-4 levels were significantly reduced by DON while KAM pretreatment alleviated the damage caused by DON accompanying an increase of TEER, claudin-3, and ZO-1. Thus, kaempferol and DON differentially affected the expression of tight junction proteins at different stages of Caco-2 cell proliferation and differentiation, and an increase of the integrity of TJ after KAM pretreatment indicates KAM has the potential to protect the integrity of the barrier function of the intestinal epithelium for improved health.
机译:肠道的屏障功能对肠道健康至关重要,并且在霉菌毒素治疗后研究了人上皮结直肠癌(Caco-2)细胞中的紧密结(TJ)蛋白的表达,模仿肠道细胞增殖和分化脱氧性苯酚(Don)和Kaempferol(Kam)的酚类化合物。结果表明,唐(5μm)显着降低了Claudin-4的表达,而Kaempferol(100μm)增加了Caco-2细胞增殖期间Claudin-3的表达。在培养11天后,唐治疗意外,增强了克劳德-4的表达随着人士增加。对于21天培养后的分化的CaCO-2细胞,DON的TEER和CLAUDIN-4水平显着减少,而锦预处理减轻了伴随着伴侣,CLAUDIN-3和ZO-1伴随的拒绝造成的损害。因此,Kaempferol和Don差异地影响了Caco-2细胞增殖和分化的不同阶段的紧密结蛋白的表达,并且在锦预处理后TJ的完整性增加表明锦鲤有可能保护阻挡功能的完整性肠上皮改善了健康。

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    《RSC Advances》 |2019年第59期|共10页
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  • 正文语种 eng
  • 中图分类 化学;
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