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International Journal of Medicinal Mushrooms
IF: 1.423 5-Year IF: 1.525 SJR: 0.433 SNIP: 0.661 CiteScore™: 1.38

ISSN Print: 1521-9437
ISSN Online: 1940-4344

International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v1.i3.10
pages 195-206

A Review of Pharmacological Activities of Mushroom Polysaccharides

Vincent Eng Choo Ooi
Department of Biology, The Chinese University of Hong Kong, Shatin, New Territories Hong Kong, China
Fang Liu
Department of Microbiology, College of Life Science, Nankai University, Tianjin, China

ABSTRACT

In the last few decades, mushrooms have increasingly been used as a source of therapeutic agents or health food supplements. In particular, polysaccharides or polysaccharide-protein complexes derived from mushrooms have received much attention in biomedical research. These bioactive biopolymers are mainly present as glucans with different types of glycosidic linkages, such as (1→3), (1→6)-β-glucans and (1→3)-α-gtucans, while others mostly bind to protein residues as polysaccharide-protein complexes. One of the most promising activities of these polysaccharides is their immunomodulation and anticancer effect. Three antitumor polysaccharides, namely lentinan, schizophyllan, and protein-bound polysaccharide (or polysaccharopeptide), have been isolated from Lentinus edodes (Berk.) Sing., Schizophyllum commune (Fr.: Fr.), and Coriolus versicolor (L.: Fr.) Quel. [= Trametes versicolor (L.: Fr.) Lloyd], respectively, and have become large nutraceutical and pharmaceutical market items, particularly in Japan. The mechanism of their antitumor actions is still not completely understood. But it is widely accepted that antitumor polysaccharides from higher fungi enhance various immune responses in vivo and in vitro, and act as biological response modifiers. Potentiation of the host defense system may result in the activation of many kinds of immune cells that are vitally important for the maintenance of homeostasis. In addition to immunomodulation and antitumor activity, there are new potential applications of mushroom polysaccharides or polysaccharide-protein complexes for pharmaceutical and functional food development. These polysaccharides have been shown to have various potent pharmacological properties, such as antioxidant, free radical scavenging, antiviral, hepatoprotective, antifibrotic, antiinflammatory, antidiabetes, and hypocholesterolemic activities.


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