Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 96, Issue -, Pages 775-785Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ijbiomac.2016.12.077
Keywords
Polysaccharides; Platycodon grandiflorus (Jacq.) A.DC; Immunological activity
Funding
- National Key RD Program [2016YFD0501208]
- China Postdoctoral Science Foundation [2016M592232]
- Special Funding of Postdoctoral Innovation Project in Shandong Province [201603051]
- Shandong Modern Agricultural Technology & Industry System [SDAIT-11-04]
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Polysaccharides were isolated from Platycodon grandiflorus (Jacq.) A.DC. (PG) and the effects of three polysaccharides (PGPS(80), PGPS(60), PGPS(t)) on their immunological activities were studied. The structure identification of PGPSs was assessed using physicochemical and spectral methods. Results showed that PGPS(t)(2.67 x 10(5) Da) compared to PGPS(80)(1.01 x 10(5) Da) and PGPS(60)(1.12 x 10(5) Da) has relatively higher average molecular weight(Mw) at the first peak with a narrower molecular weight distribution and all consisted of glucose, mannose, arabinose, galactose, xylose and rhamnose in different mass percentages. PGPS(80) and PGPSt linked mainly by 1,3- and 1,6-beta-D-Galp residues. The immunological efficacy of PGPSs was performed on chicken peritoneal macrophages. Results showed that PGPS(t) significantly increased phagocytic rates, proliferation and NO production, stimulated macrophages to produce cytokines, including TNF-alpha, IL -1 beta and IL-6 as well as stimulated macrophages to express the maturation markers CD80 and CD86. These findings suggest that PGPS(t) exerted significant immunological activity and might be associated with special characters. (C) 2016 Elsevier B.V. All rights reserved.
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