Affiliation:
1. Center for Research and Development, Lactomason Co., Ltd., Jinju 52840, Republic of Korea
Abstract
Although leaky gut syndrome is not recognized as an official diagnosis for human diseases, it is now believed that dysfunction of the cell barrier causes increased permeability of intestinal epithelial cells leading to this condition. Probiotics have been widely used to improve gut health, and studies have investigated the relevance of protecting the intestinal barrier by taking probiotic strains in vitro and in vivo. However, most studies have restricted the use of single or several probiotic strains and do not consider commercially available probiotic products composed of multi-species. In this study, we provide experimental evidence that a multi-species probiotic mixture composed of eight different strains and a heat-treated probiotic strain is effective in preventing leaky gut conditions. We employed an in vitro co-culture model system utilizing two different differentiated cell lines to mimic human intestinal tissue. The integrity of epithelial barrier function was protected by the preserving the occludin protein level and activating the AMPK signaling pathway, associated with tight junctions (TJs), through treatment with the probiotic strain mixture in Caco-2 cells. Moreover, we confirmed that application of the multi-species probiotic mixture reduced the expression of proinflammatory cytokine genes by inhibiting NFκB signaling pathway when artificial inflammation was induced in an in vitro co-culture model system. Finally, we proved that the epithelial permeability measured by trans-epithelial electrical resistance (TEER) was significantly decreased in the probiotic mixture treated cells, indicating that the integrity of the epithelial barrier function was not compromised. The multi-species probiotic strain mixture exhibited the protective effect on the integrity of intestinal barrier function via enhancing TJ complexes and reducing inflammatory responses in the human intestinal cells.
Subject
Virology,Microbiology (medical),Microbiology
Reference56 articles.
1. Functional probiotics of lactic acid bacteria from Hu sheep milk;Chen;BMC Microbiol.,2020
2. Intestinal barrier dysfunction in inflammatory bowel diseases;McGuckin;Inflamm. Bowel Dis.,2009
3. Paray, B.A., Albeshr, M.F., Jan, A.T., and Rather, I.A. (2020). Leaky Gut and Autoimmunity: An Intricate Balance in Individuals Health and the Diseased State. Int. J. Mol. Sci., 21.
4. Zonulin and Its Regulation of Intestinal Barrier Function: The Biological Door to Inflammation, Autoimmunity, and Cancer;Fasano;Physiol. Rev.,2011
5. Intestinal Permeability Defects: Is It Time to Treat?;Odenwald;Clin. Gastroenterol. Hepatol.,2013
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