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International Journal of Medicinal Mushrooms
Facteur d'impact: 1.423 Facteur d'impact sur 5 ans: 1.525 SJR: 0.431 SNIP: 0.661 CiteScore™: 1.38

ISSN Imprimer: 1521-9437
ISSN En ligne: 1940-4344

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International Journal of Medicinal Mushrooms

DOI: 10.1615/IntJMedMushrooms.v18.i9.50
pages 807-819

Structural Characterization and Immunological Activities of a Novel Water-Soluble Polysaccharide from the Fruiting Bodies of Culinary-Medicinal Winter Mushroom, Flammulina velutipes (Agaricomycetes)

Ting Feng
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of the Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, and the Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China; College of Chinese Traditional Medicine, Jilin Agricultural University, Jilin Changchun, China
Wei Jia
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding; Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China
Wenhan Wang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding; Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China
Chi-Chung Lin
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization, Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Shanghai, China; Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai, China
Hua Fan
Institut für Laboratoriumsmedizin Klinische Chemie und Pathobiochemie, Campus Virchow Klinikum, Charite-Universitätsmedizin, Berlin, Germany
Jing-Song Zhang
National Engineering Research Center of Edible Fungi, Key Laboratory of Applied Mycological Resources and Utilization of Ministry of Agriculture, Shanghai Key Laboratory of Agricultural Genetics and Breeding, Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
Hai-Ying Bao
College of Chinese Traditional Medicine, Jilin Agricultural University, Jilin Changchun, China

RÉSUMÉ

A water-soluble polysaccharide, designated FVPA2, was isolated from the fruiting bodies of Flammulina velutipes using DEAE Sepharose Fast Flow and gel-permeation chromatography. Its structure was elucidated by monosaccharide composition and methylation analysis, ultraviolet, Fourier transform infrared spectrometry, and nuclear magnetic resonance spectroscopy. Results showed that FVPA2 was a homogeneous heteropolysaccharide containing galactose, fucose, and mannose in a molar ratio of 5:1:1. High-performance liquid chromatography indicated its molecular weight as 3.4 × 104 Da. FVPA2 also has a repeating unit. In vitro immunomodulatory studies showed that Raw264.7 cells were stimulated to secret nitric oxide upon administration of 200−500 µg/mL FVPA2. FVPA2 also stimulated the proliferation of mouse spleen lymphocytes and B lymphocytes.