Advanced application of bovine intestinal epithelial cell line for evaluating regulatory effect of lactobacilli against heat-killed enterotoxigenicEscherichia coli-mediated inflamm...

• Autores: Takanashi, Naoya; Tomosada, Yohsuke; Villena, Julio Cesar; Murata, Kozue; Takahashi, Takuya; Chiba, Eriko; Tohno, Masanori; Tomoyuki Shimazu; Aso, Hisashi; Suda, Yoshihito; Ikegami, Shuji; Itoh, Hiroyuki; Kawai, Yasushi; Tadao Saito; Alvarez, Gladis Susana; Kitazawa, Haruki
• Año de publicación: 2013
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: bovine intestinal epithelial cells; bifidobacteria; TLRs negative regulators; Escherichia coli-mediated inflammation
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Background: Previously, a bovine intestinal epithelial cell line (BIE cells) was successfully established. This work hypothesized that BIE cells are useful in vitro model system for the study of interactions of microbial- or pathogenassociated molecular patterns (MAMPs or PAMPs) with bovine intestinal epithelial cells and for the selection of immunoregulatory lactic acid bacteria (LAB). Results: All toll-like receptor (TLR) genes were expressed in BIE cells, being TLR4 one of the most strongly expressed. We demonstrated that heat-stable PAMPs of enterotoxigenic Escherichia coli (ETEC) significantly enhanced the production of IL-6, IL-8, IL-1! and MCP-1 in BIE cells by activating both NF-"B and MAPK pathways. We evaluated the capacity of several lactobacilli strains to modulate heat-stable ETEC PAMPs-mediated inflammatory response in BIE cells. Among these strains evaluated, Lactobacillus casei OLL2768 attenuated heat-stable ETEC PAMPs-induced pro-inflammatory response by inhibiting NF-"B and p38 signaling pathways in BIE cells. Moreover, L. casei OLL2768 negatively regulated TLR4 signaling in BIE cells by up-regulating Toll interacting protein (Tollip) and B-cell lymphoma 3-encoded protein (Bcl-3). Conclusions: BIE cells are suitable for the selection of immunoregulatory LAB and for studying the mechanisms involved in the protective activity of immunobiotics against pathogen-induced inflammatory damage. In addition, we showed that L. casei OLL2768 functionally modulate the bovine intestinal epithelium by attenuating heat-stable ETEC PAMPs-induced inflammation. Therefore L. casei OLL2768 is a good candidate for in vivo studying the protective effect of LAB against intestinal inflammatory damage induced by ETEC infection or heat-stable ETEC PAMPs challenge in the bovine host.
Fil: Takanashi, Naoya. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan;
Fil: Tomosada, Yohsuke. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan;
Fil: Villena, Julio Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - CONICET - Tucuman. Centro de Referencia Para Lactobacilos (i); Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan;
Fil: Murata, Kozue. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan;
Fil: Takahashi, Takuya. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan;
Fil: Chiba, Eriko. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan;
Fil: Tohno, Masanori. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan; National Agriculture and Food Research Organization. National Institute of Livestock and Grassland Science; Japan.;
Fil: Tomoyuki Shimazu. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan; Laboratory of Animal Breading and Genetics. Graduate School of Agricultural Science; Japan.;
Fil: Aso, Hisashi. Cell Biology Laboratory, Graduate School of Agricultural Science. Tohoku University; Japan.;
Fil: Suda, Yoshihito. Department of Food, Agriculture and Environment. Miyagi University; Japan.;
Fil: Ikegami, Shuji. Division of Research and Development. Food Science Institut. Meiji Dairies CoOdawara; Japan;
Fil: Itoh, Hiroyuki. Division of Research and Development. Food Science Institut. Meiji Dairies CoOdawara; Japan;
Fil: Kawai, Yasushi. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan;
Fil: Tadao Saito. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan;
Fil: Alvarez, Gladis Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tucumán. Centro de Referencia para Lactobacilos (i); Argentina;
Fil: Kitazawa, Haruki. Food and Feed Immunology Group. Laboratory of Animal Products Chemistry. Graduate School of Agricultural Science. Tohoku University; Japan;