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Abstract Title:

The polysaccharide isolated from Pleurotus nebrodensis (PN-S) shows immune-stimulating activity in RAW264.7 macrophages.

Abstract Source:

Chin J Nat Med. 2015 May ;13(5):355-60. PMID: 25986284

Abstract Author(s):

Hai-Yan Cui, Chang-Lu Wang, Yu-Rong Wang, Zhen-Jing Li, Ya-Nan Zhang

Article Affiliation:

Hai-Yan Cui

Abstract:

A novel Pleurotus nebrodensis polysaccharide (PN-S) was purified and characterized, and its immune-stimulating activity was evaluated in RAW264.7 macrophages. PN-S induced the proliferation of RAW264.7 cells in a dose-dependent manner, as determined by the MTT assay. After exposure to PN-S, the phagocytosis of the macrophages was significantly improved, with remarkable changes in morphology being observed. Flow cytometric analysis demonstrated that PN-S promoted RAW264.7 cells to progress through S and G2/M phases. PN-S treatment enhanced the productions of interleukin-6 (IL-6), nitric oxide (NO), interferon gamma (INF-γ), and tumor necrosis factor-α (TNF-α) in the macrophages, with up-regulation of mRNA expressions of interleukin-6 (IL-6), inducible nitric oxide synthase (iNOS), interferon gamma(INF-γ) and tumor necrosis factor-α (TNF-α) being observed in a dose-dependent manner, as measured by qRT-PCR. Inconclusion, these results suggest that the purified PN-S can improve immunity by activating macrophages.

Study Type : In Vitro Study
Additional Links
Pharmacological Actions : Immunostimulatory : CK(265) : AC(60)

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