Abstract
In this study, we cloned the cDNAs encoding porcine RP105 (poRP105) and porcine MD-1 (poMD-1) from Peyer's patches of adult swine. The complete open reading frames of poRP105 and poMD-1 contain 1986 and 480 bp and encode 661 and 159 amino acid residues, respectively. These two proteins were more similar to the human (77.6% and 76.5% amino acid identity) than the mouse counterparts (70.0% and 71.1% amino acid identity). The results of several experiments in cells cotransfected with poRP105 and poMD-1 indicated both lipopolysaccharide and extracellular phosphopolysaccharide from Lactococcus lactis subsp. cremoris (Lc. cremoris) strongly activate nuclear factor-κB and induce the expression of various cytokines via RP105. These effects were mediated by phosphatidylinositol 3-kinase and Bruton's tyrosine kinase. Thus, we identified extracellular polysaccharide from Lc. cremoris as an active substance that can induce immune activation via RP105 and MD-1.
Original language | English |
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Pages (from-to) | 2566-2577 |
Number of pages | 12 |
Journal | Molecular Immunology |
Volume | 44 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2007 Apr |
Keywords
- Extracellular phosphopolysaccharide
- Immunobiotics
- Lactococcus lactis subsp. cremoris
- MD-1
- RP105
- Swine
- cDNA cloning
ASJC Scopus subject areas
- Immunology
- Molecular Biology