An anti-inflammatory isoflavone from soybean inoculated with a marine fungus Aspergillus terreus C23-3

Biosci Biotechnol Biochem. 2020 Aug;84(8):1546-1553. doi: 10.1080/09168451.2020.1764838. Epub 2020 May 20.

Abstract

A new isoflavone derivative compound 1 (psoralenone) was isolated from soybean inoculated with a marine fungus Aspergillus terreus C23-3, together with seven known compounds including isoflavones 2-6, butyrolactone I (7) and blumenol A (8). Their structures were elucidated by MS, NMR, and ECD. Psoralenone displayed moderate in vitro anti-inflammatory activity in the LPS-induced RAW264.7 cell model. Compound 2 (genistein) showed moderate acetylcholinesterase (AChE) inhibitory activity whereas compounds 2, 5 (biochanin A), 6 (psoralenol), and 7 exhibited potent larvicidal activity against brine shrimp. Compounds 3 (daidzein), 4 (4'-hydroxy-6,7-dimethoxyisoflavone), and 5-7 showed broad-spectrum anti-microbial activity, and compound 7 also showed moderate 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity.

Keywords: Aspergillus terreus; Soybean; anti-inflammation; isoflavone; marine fungus.

MeSH terms

  • 4-Butyrolactone / analogs & derivatives
  • 4-Butyrolactone / isolation & purification
  • 4-Butyrolactone / pharmacology
  • Acetylcholinesterase
  • Animals
  • Anti-Infective Agents / isolation & purification
  • Anti-Infective Agents / pharmacology
  • Anti-Inflammatory Agents / isolation & purification*
  • Anti-Inflammatory Agents / pharmacology
  • Aspergillus / chemistry*
  • Aspergillus / physiology
  • Cholinesterase Inhibitors / isolation & purification
  • Cholinesterase Inhibitors / pharmacology
  • Cyclohexanones / isolation & purification
  • Cyclohexanones / pharmacology
  • Free Radical Scavengers / isolation & purification
  • Free Radical Scavengers / pharmacology
  • Furocoumarins / isolation & purification
  • Furocoumarins / pharmacology
  • Genistein / isolation & purification
  • Genistein / pharmacology
  • Glycine max / chemistry*
  • Glycine max / microbiology
  • Inflammation
  • Isoflavones / isolation & purification*
  • Isoflavones / pharmacology
  • Lipopolysaccharides / antagonists & inhibitors*
  • Lipopolysaccharides / pharmacology
  • Mice
  • RAW 264.7 Cells

Substances

  • Anti-Infective Agents
  • Anti-Inflammatory Agents
  • Cholinesterase Inhibitors
  • Cyclohexanones
  • Free Radical Scavengers
  • Furocoumarins
  • Isoflavones
  • Lipopolysaccharides
  • blumenol A
  • daidzein
  • butyrolactone I
  • Genistein
  • Acetylcholinesterase
  • 4-Butyrolactone
  • biochanin A

Supplementary concepts

  • Aspergillus terreus