Cyanidin reduces preadipocyte differentiation and relative ChREBP expression

A. Pompei, E. Toniato, P. Innocenti, I. D'Alimonte, C. Cellini, D. Mattoscio, R. Cotellese, D. Bosco, R. Ciccarelli, V. Dadorante, N. D'Orazio, S. Martinotti, Iole Robuffo

Research output: Contribution to journalArticle

Abstract

Adipogenesis is a continuous process even in adult adipose tissue for the presence of preadipocytes that, when subjected to appropriate stimuli can proliferate and differentiate. ChREBP, the essential transcription factor for lipogenesis, is expressed in all tissues, but mainly in Iipogenic organs. In this study, we focused on ChREBP expression during preadipocytes differentiation. Since it was found that cyanidin-3 reduces body weight in mice even in the presence of a high-fat diet, by decreasing levels of blood glucose and by improving insulin sensitivity, we studied the effect of this substance on adipogenic differentiation. For this purpose we used preadipocytes obtained from subcutaneous and visceral human adipose expiant tissue, characterized and stimulated to differentiate in selective media. On cytofluorimetric analysis these cells showed mesenchymal markers (CD29, CD90, CD44), whereas they were negative for hematopoietic markers (CD45, CD10, CD117, CD31). ChREBP expression levels were quantified by immunoelectron-microscopy and western blotting analysis. In this report we show that ChREBP is expressed in preadipocytes (both nuclear and cytoplasmic compartments); the cytoplasmic level of ChREBP increased by 50% on day seven of differentiation into mature adipocytes. Cyanidin reduced differentiation by 20% (as evaluated by red oil O staining) and the expression of ChREBP. In addition, cyanidin-treated cells showed abnormal morphology, a square shape with irregular size, probably due to the fact that cyanidin may interfere with the extracellular matrix. These findings suggest that dietary cyanidin, may have inhibitory effects on adipogenesis.

Original languageEnglish
Pages (from-to)253-264
Number of pages12
JournalJournal of Biological Regulators and Homeostatic Agents
Volume26
Issue number2
Publication statusPublished - Apr 2012

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Keywords

  • Adipogenesis
  • C3G
  • ChREBP
  • Cyanidin 3-glucoside
  • Immunoelectron-microscopy
  • Preadipocytes differentiation

ASJC Scopus subject areas

  • Oncology
  • Endocrinology, Diabetes and Metabolism
  • Physiology (medical)
  • Immunology and Allergy
  • Immunology
  • Endocrinology
  • Physiology
  • Cancer Research

Cite this

Pompei, A., Toniato, E., Innocenti, P., D'Alimonte, I., Cellini, C., Mattoscio, D., Cotellese, R., Bosco, D., Ciccarelli, R., Dadorante, V., D'Orazio, N., Martinotti, S., & Robuffo, I. (2012). Cyanidin reduces preadipocyte differentiation and relative ChREBP expression. Journal of Biological Regulators and Homeostatic Agents, 26(2), 253-264.