Food Science and Biotechnology

Korean Society of Food Science and Technology (한국식품과학회)
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Modulatory Activity of CpG Oligonucleotides from Bifidobacterium longum on Immune Cells

  • Choi, Young-Ok (Department of Food and Nutrition, Research Institute of Human Ecology, Seoul National University) ;
  • Seo, Jeong-Min (Research Center, Bifido Inc.) ;
  • Ji, Geun-Eog (Department of Food and Nutrition, Research Institute of Human Ecology, Seoul National University)
  • Published : 2008.12.31
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Abstract

The purpose of this study was to characterize and investigate the immune activity of CpG oligodeoxynucleotides (ODNs) from Bifidobacterium longum. Bacterial CpG motifs have attracted considerable interests because of their immunomodulatory activities. Genomic DNA from B. longum was prepared and amplified for 4 different 180-188-mer double-stranded ODNs (BLODN1-BLODN4). When immune cells (RAW 264.7 murine macrophages and JAWS II dendritic cells) with these ODNs were treated, BLODN4 induced the highest immune activity. To assess the effectiveness of the CpG sequences within BLODN4, single-stranded 40-mer ODNs containing CpG sequences (sBLODN4-1, sBLODN4-2) were synthesized. sBLODN4-1 induced higher level of cytokines such as interleukin (IL)-12p40 and tumor necrosis factor (TNF)-$\alpha$ by macrophage and IL-6 and TNF-$\alpha$ by dendritic cells than did sBLODN4-2. The results suggest that CpG ODNs-enriched components of B. longum might be useful as an immunomodulatory functional food ingredient.

Keywords

References

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