Polymers (Feb 2024)

Structural Elucidation of a Polysaccharide from <i>Flammulina velutipes</i> and Its Lipid-Lowering and Immunomodulation Activities

  • Wei Jia,
  • Wenhan Wang,
  • Dongsheng Yu,
  • Yangchao Yu,
  • Zhan Feng,
  • Hewen Li,
  • Jingsong Zhang,
  • Henan Zhang

DOI
https://doi.org/10.3390/polym16050598
Journal volume & issue
Vol. 16, no. 5
p. 598

Abstract

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FVPT1, a novel heteropolysaccharide, was purified from the fruiting body of Flammulina velutipes using magnetic-field-assisted three-phase partitioning and gel permeation chromatography. The structure was characterized using monosaccharide composition and methylation analysis, infrared spectroscopy and nuclear magnetic resonance (NMR). The FVPT1 (~1.64 × 104 Da) was composed of L-fucose, D-galactose, D-glucose and D-mannose at a molar ratio of 1.0:3.5:1.0:1.4. The polysaccharide repeating unit of FVPT1 was established with methylation analyses and NMR spectroscopy. Moreover, a zebrafish larva hyperlipidemia model test demonstrated that FVPT1 can show appreciable lipid-lowering effects. In addition, the FVPT1 exhibited remarkable immunoregulatory activity by increasing nitric oxide, interleukin (IL)-1β and IL-1 secretion in macrophages. Therefore, these results suggest that FVPT1 has the potential to be developed into a new immune or hypolipidemic health product.

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