Expression of heat shock proteins 27 and 72 correlates with specific commensal microbes in different regions of porcine gastrointestinal tract.
The gastrointestinal (GI) tract of mammals is inhabited by trillions of microorganisms, resulting in exceedingly complex networking. The interaction between distinct bacterial species and the host immune system is essential in maintaining homeostasis in the gut ecosystem. For instance, the gut commensal microbiota dictates intestinal mucosa maturation and its abundant immune components, such as cytoprotective heat shock proteins (HSP). Here we examined physiological expression of HSP in the normal porcine GI tract and found it to be gut region- and cell type-specific in response to dietary components, microbes, and microbial metabolites to which the mucosa surface is exposed. Correlations between HSP72 expression and ileal Lactobacillus spp. and colonic clostridia species, and between HSP27 expression and uronic acid ingestion, were important interplays identified here. Thus this study provides novel insights into host-microbe interactions shaping the immune system that are modifiable by dietary regime.
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Hao-Yu
HY
Liu
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Johan
J
Dicksved
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Torbjörn
T
Lundh
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, Uppsala, Sweden Jan.Erik.Lindberg@slu.se.
Jan Erik
JE
Lindberg
D000818:Animals; D005260:Female; D055551:HSP27 Heat-Shock Proteins / Q000378:metabolism*; D050884:HSP72 Heat-Shock Proteins / Q000378:metabolism*; D006706:Homeostasis / Q000502:physiology; D007413:Intestinal Mucosa / Q000378:metabolism* / Q000382:microbiology*; D008297:Male; D054892:Metagenome; D013552:Swine
D055551:HSP27 Heat-Shock Proteins; D050884:HSP72 Heat-Shock Proteins
dietary fiber; heat shock proteins 27 and 72; mucosal immune system; porcine gut microbiota