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Abstract Title:

Crude polysaccharide from a wild mushroom enhances immune response in murine macrophage cells by TLR/NF-κB pathway.

Abstract Source:

J Pharm Pharmacol. 2019 Aug ;71(8):1311-1323. Epub 2019 May 28. PMID: 31134626

Abstract Author(s):

Sandipta Ghosh, Somanjana Khatua, Krishnendu Acharya

Article Affiliation:

Sandipta Ghosh

Abstract:

OBJECTIVE: Mushroom crude polysaccharides offer a complete package of various medicinal activities. In this context, the present study aimed to unveil structural and biomedical properties of crude polysaccharide (MLHWP) obtained from an edible wild mushroom Macrocybe lobayensis (R. Heim) Pegler&Lodge.

METHOD: Chemical characterization was accomplished with the help of spectrophotometry, Fourier-transform infrared spectroscopy, HPTLC and GC-MS. Immunomodulatory activity of the crude polysaccharide and its signalling mechanism was assessed using RAW 264.7 cells. Furthermore, antioxidant activity was analysed based on radical scavenging, metal ion chelating and reducing effect.

KEY FINDINGS: Compositional study revealed that MLHWP possessed triple helical structure and its backbone consisted ofβ-linked glucan along with xylose, rhamnose, mannose and galactose. Investigation on bioactive potency revealed that MLHWP augmented macrophage activity in terms of viability, phagocytosis, NO and ROS generation. Gene expression studies indicated that MLHWP signalled through TLR and modulated expression of immunomodulation-related genes including NF-κB, COX-2, IFN-γ, TNF-α, iNOS and Iκ-βα. Besides, MLHWP displayed noticeable antioxidant potential as reflected in all investigating assays.

CONCLUSIONS: Overall, the results portrayed possibility of MLHWP as pharmaceutical agent with multidimensional application.

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