WSF-P-1, a novel AMPK activator, promotes adiponectin multimerization in 3T3-L1 adipocytes

Biosci Biotechnol Biochem. 2017 Aug;81(8):1529-1535. doi: 10.1080/09168451.2017.1336923. Epub 2017 Jun 13.

Abstract

Adiponectin, an adipokine with insulin-sensitizing effect, is secreted from adipocytes into circulation as high, medium, and low molecular weight forms (HMW, MMW, and LMW). The HMW adiponectin oligomers possess the most potent insulin-sensitizing activity. WSF-P-1(N-methyl-1,2,3,4,5,6-hexahydro-1,1,5,5-tetramethyl-7H-2,4α-methanonaphthalen-7-amine) is derived from natural sesquiterpene longifolene by chemical modifications. We found that WSF-P-1 activates AMPK in both 3T3-L1 adipocytes and 293T cells in this study. Activation of AMPK by WSF-P-1 promotes the assembly of HMW adiponectin and increases the HMW/total ratio of adiponectin in 3T3-L1 adipocytes. We demonstrated that the Ca2+-dependent CaMKK signaling pathway is involved in WSF-P-1-induced AMPK activation and adiponectin multimerization. WSF-P-1 also activates GLUT1-mediated glucose uptake in 3T3-L1 adipocytes, making it a potential drug candidate for the treatment of type 2 diabetes, obesity, and other obesity-related metabolic diseases.

Keywords: AMPK; CaMKK; adiponectin; glucose uptake; insulin sensitivity.

MeSH terms

  • 3T3-L1 Cells
  • AMP-Activated Protein Kinases / genetics*
  • AMP-Activated Protein Kinases / metabolism
  • Adipocytes / cytology
  • Adipocytes / drug effects
  • Adipocytes / metabolism
  • Adiponectin / chemistry
  • Adiponectin / genetics*
  • Adiponectin / metabolism
  • Animals
  • Calcium / metabolism
  • Calcium-Calmodulin-Dependent Protein Kinase Kinase / genetics
  • Calcium-Calmodulin-Dependent Protein Kinase Kinase / metabolism
  • Cell Differentiation
  • Enzyme Activation / drug effects
  • Enzyme Activators / chemical synthesis
  • Enzyme Activators / pharmacology*
  • Gene Expression Regulation / drug effects
  • Glucose / metabolism
  • Glucose Transporter Type 1 / genetics
  • Glucose Transporter Type 1 / metabolism
  • HEK293 Cells
  • Humans
  • Insulin Resistance
  • Mice
  • Protein Multimerization / drug effects*
  • Sesquiterpenes / chemical synthesis
  • Sesquiterpenes / chemistry
  • Sesquiterpenes / pharmacology*
  • Signal Transduction

Substances

  • Adiponectin
  • Enzyme Activators
  • Glucose Transporter Type 1
  • Sesquiterpenes
  • Slc2a1 protein, mouse
  • longifolene
  • Calcium-Calmodulin-Dependent Protein Kinase Kinase
  • AMP-Activated Protein Kinases
  • Glucose
  • Calcium