Enterococcus faecium HDRsEf1 Protects the Intestinal Epithelium and Attenuates ETEC-Induced IL-8 Secretion in Enterocytes.
Zhongyuan TianXiaofang LiuRan DaiYuncai XiaoXiliang WangDingren BiDeshi ShiPublished in: Mediators of inflammation (2016)
The probiotic Enterococcus faecium HDRsEf1 (Ef1) has been shown to have positive effects on piglet diarrhoea, but the mechanism has not yet been elucidated. In this study, using the IPEC-J2 cell line to mimic intestinal epithelial cells and enterotoxigenic Escherichia coli (ETEC) K88ac as a representative intestinal pathogen, the mechanism underlying Ef1 protection against an enteropathogen was investigated. The results demonstrated that Ef1 was effective in displacing K88ac from the IPEC-J2 cell layer. Moreover, Ef1 and its cell-free supernatant (S-Ef1) modulate IL-8 released by IPEC-J2 cells. Ef1 and its cell-free supernatant showed the potential to protect enterocytes from an acute inflammatory response. In addition, Ef1 and its cell-free supernatant increased the transepithelial electrical resistance (TEER) of the enterocyte monolayer, thus strengthening the intestinal barrier against ETEC. These results may contribute to the development of therapeutic interventions using Ef1 in intestinal disorders of piglets.
Keyphrases
- cell free
- circulating tumor
- inflammatory response
- escherichia coli
- single cell
- staphylococcus aureus
- intensive care unit
- lipopolysaccharide induced
- cross sectional
- risk assessment
- pseudomonas aeruginosa
- high resolution
- signaling pathway
- lps induced
- multidrug resistant
- cell cycle arrest
- oxidative stress
- climate change
- aortic dissection
- acute respiratory distress syndrome
- cystic fibrosis
- endothelial cells
- circulating tumor cells