Piperine induces osteoblast differentiation through AMPK-dependent Runx2 expression

Biochem Biophys Res Commun. 2018 Jan 1;495(1):1497-1502. doi: 10.1016/j.bbrc.2017.11.200. Epub 2017 Dec 5.

Abstract

Piperine is an alkaloid responsible for the pungency of black pepper and long pepper. It is reported to have various biological actions such as anti-oxidative and anti-inflammatory, and aids cancer prevention. Antioxidants have been shown to promote osteoblast differentiation. However, osteoblast differentiation by piperine has not yet been elucidated. Piperine-induced expression of the osteogenic genes such as distal-less homeobox 5 (Dlx5), inhibitor of DNA binding-1 (Id1), and runt-related transcription factor 2 (Runx2) was investigated using RT-PCR. In addition, alkaline phosphatase (ALP) activity and mineralization was found to be increased by piperine treatment. Finally, we confirmed that piperine induced phosphorylation of AMPK in MC3T3-E1 cells. Taken together, these results demonstrate that piperine enhance osteoblast differentiation through AMPK phosphorylation in MC3T3-E1 cells.

Keywords: AMP-activated protein kinase (AMPK); C3H10T1/2; MC3T3-E1; Osteogenic differentiation; Piperine.

MeSH terms

  • 3T3 Cells
  • AMP-Activated Protein Kinase Kinases
  • Alkaloids / administration & dosage*
  • Animals
  • Antioxidants / administration & dosage
  • Benzodioxoles / administration & dosage*
  • Cell Differentiation / drug effects
  • Cell Differentiation / physiology*
  • Core Binding Factor Alpha 1 Subunit / metabolism*
  • Dose-Response Relationship, Drug
  • Gene Expression Regulation, Developmental / drug effects
  • Gene Expression Regulation, Developmental / physiology
  • Mice
  • Osteoblasts / cytology
  • Osteoblasts / drug effects
  • Osteoblasts / physiology*
  • Osteogenesis / drug effects
  • Osteogenesis / physiology*
  • Piperidines / administration & dosage*
  • Polyunsaturated Alkamides / administration & dosage*
  • Protein Kinases / metabolism*

Substances

  • Alkaloids
  • Antioxidants
  • Benzodioxoles
  • Core Binding Factor Alpha 1 Subunit
  • Piperidines
  • Polyunsaturated Alkamides
  • Runx2 protein, mouse
  • Protein Kinases
  • AMP-Activated Protein Kinase Kinases
  • piperine