Coenzyme Q10 increases the fatty acid oxidation through AMPK-mediated PPARα induction in 3T3-L1 preadipocytes

Soo Kyung Lee, Jung Ok Lee, Ji Hae Kim, Nami Kim, Ga Young You, Ji Wook Moon, Jie Sha, Su Jin Kim, Yong Woo Lee, Ho Jin Kang, Sun Hwa Park, Hyeon Soo Kim

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56 Citations (Scopus)

Abstract

Coenzyme Q10(CoQ10) is a known anti-adipogenic factor. However, the mechanism by which CoQ10 acts is unclear. In this study, we found that CoQ10 increased the phosphorylation of AMP-activated protein kinase (AMPK) in 3T3-L1preadipocytes. CoQ10 induced an increase in cytoplasmic calcium concentrations, which is reflected by increased Fluo-3 intensity under confocal microscopy recording. Either inhibition of Ca2+/calmodulin-dependent protein kinase kinase (CaMKK) or knock-down CaMKK blocked CoQ10-induced AMPK phosphorylation, suggesting the involvement of calcium in CoQ10-mediated AMPK signaling. CoQ10 also increased the expression of peroxisome proliferator-activated receptor alpha (PPARα) at both the mRNA and protein levels. Knock down of AMPK with siRNA or inhibition of AMPK using an AMPK inhibitor compound C blocked CoQ10-induced expression of PPARα, indicating that AMPK plays a critical role in PPARα induction. In addition, CoQ10 increased fatty acid oxidation in 3T3-L1preadipocytes. The promoter activity of PPARα was increased by CoQ10 in an AMPK-dependent fashion. Moreover, the induction of acyl-CoA oxidase (ACO), a target gene of PPARα, was blocked under the PPARα knock down condition. Furthermore, treatment with CoQ10 blocked differentiation-induced adipogenesis. This blockade was not observed under the PPARα knock-down condition. Collectively, these results demonstrate that CoQ10 induces PPARα expression via the calcium-mediated AMPK signal pathway and suppresses differentiation-induced adipogenesis.

Original languageEnglish
Pages (from-to)2329-2336
Number of pages8
JournalCellular Signalling
Volume24
Issue number12
DOIs
Publication statusPublished - 2012 Dec

Keywords

  • AMPK
  • Adipogenesis
  • Coenzyme Q10
  • Fatty acid oxidation
  • PPARα

ASJC Scopus subject areas

  • Cell Biology

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  • Cite this

    Lee, S. K., Lee, J. O., Kim, J. H., Kim, N., You, G. Y., Moon, J. W., Sha, J., Kim, S. J., Lee, Y. W., Kang, H. J., Park, S. H., & Kim, H. S. (2012). Coenzyme Q10 increases the fatty acid oxidation through AMPK-mediated PPARα induction in 3T3-L1 preadipocytes. Cellular Signalling, 24(12), 2329-2336. https://doi.org/10.1016/j.cellsig.2012.07.022