Enzymatic assays and molecular modeling studies of Schisandra chinensis lignans and phenolics from fruit and leaf extracts

J Enzyme Inhib Med Chem. 2016;31(sup4):200-210. doi: 10.1080/14756366.2016.1222585. Epub 2016 Sep 5.

Abstract

Considerable interest has been shown in natural sources and their compounds in developing new therapeutically agents for different diseases. In this framework, investigations performed on this topic play a central role for human health and drug development process. Schisandra chinensis (Turcz.) Baill is a medicinal and edible plant showing highly advantageous bioactivity and nutritional value. The main bioactive compounds from its fruits are lignans, derivatives of dibenzocyclooctadiene whereas concerning its leaves, phenolic acids, and flavonoids are dominant. The purpose of this study was to investigate the enzyme inhibitory potential on selected carbohydrate hydrolases, cholinesterases, and tyrosinase of extracts from fruits and leaves of Schisandra in relation with their main bioactive compounds. Furthermore, the interactions between dominant compounds (schisandrol A, schisandrol B, schisandrin B, and cinnamic acid) from extracts and selected enzymes were investigated by molecular modeling and molecular dynamic studies in order to explain at a molecular level our findings.

Keywords: Enzyme inhibition; Schisandra chinensis; lignans; molecular modeling; phenolics.

MeSH terms

  • Cholinesterases / metabolism*
  • Dose-Response Relationship, Drug
  • Enzyme Inhibitors / chemistry
  • Enzyme Inhibitors / isolation & purification*
  • Enzyme Inhibitors / pharmacology
  • Fruit / chemistry
  • Glycoside Hydrolases / antagonists & inhibitors*
  • Glycoside Hydrolases / metabolism
  • Humans
  • Lignans / chemistry
  • Lignans / isolation & purification
  • Lignans / pharmacology*
  • Models, Molecular*
  • Molecular Structure
  • Monophenol Monooxygenase / antagonists & inhibitors*
  • Monophenol Monooxygenase / metabolism
  • Phenols / chemistry
  • Phenols / isolation & purification
  • Phenols / pharmacology*
  • Plant Extracts / chemistry
  • Plant Leaves / chemistry
  • Schisandra / chemistry*
  • Structure-Activity Relationship

Substances

  • Enzyme Inhibitors
  • Lignans
  • Phenols
  • Plant Extracts
  • Monophenol Monooxygenase
  • Cholinesterases
  • Glycoside Hydrolases