Abstract
A polysaccharide (GSP-6B) with a molecular mass of 1.86 ×10 6 Da was isolated from the fruiting bodies of Ganoderma sinense. Chemical composition analysis, methylation analysis, infrared spectroscopy, and nuclear magnetic resonance spectroscopy were conducted to elucidate its structure. GSP-6B contains a backbone of (1→6)-linked-β-d- glucopyranosyl residues, bearing branches at the O-3 position of every two sugar residues along the backbone. The side chains contain (1→4)-linked-β- d-glucopyranosyl residues, (1→3)-linked-β-d-glucopyranosyl residues, and nonreducing end β-d-glucopyranosyl residues. An in vitro immunomodulating activity assay revealed that GSP-6B could significantly induce the release of IL-1β and TNF-α in human peripheral blood mononuclear cell (PBMC) and showed no toxicity to either PBMC or a human macrophage cell line THP-1. GSP-6B could also activate dendritic cells (DC) by stimulating the secretion of IL-12 and IL-10 from DC.
Original language | English |
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Pages (from-to) | 4276-4281 |
Number of pages | 6 |
Journal | Journal of Agricultural and Food Chemistry |
Volume | 60 |
Issue number | 17 |
DOIs | |
Publication status | Published - 2 May 2012 |
Scopus Subject Areas
- Chemistry(all)
- Agricultural and Biological Sciences(all)
User-Defined Keywords
- cytokine
- dendritic cell
- Ganoderma sinense
- immunological activity
- polysaccharide