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Comparative proteome analysis using amine-reactive isobaric tagging reagents coupled with 2D LC/MS/MS in 3T3-L1 adipocytes following hypoxia or normoxia

Academic Article
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Overview

authors

  • Choi, S.
  • Cho, K.
  • Kim, J.
  • Yea, Kyungmoo
  • Park, G.
  • Lee, J.
  • Ryu, S. H.
  • Kim, J.
  • Kim, Y. H.

publication date

  • May 2009

journal

  • Biochemical and Biophysical Research Communications  Journal

abstract

  • Hypoxia during the expansion of adipocytes is known to contribute both to the secretion of multiple inflammation-related adipokines as well as to obesity. We therefore investigated the nature of protein changes occurring in adipocytes during hypoxia by observation of the intracellular proteins that are expressed in 3T3-L1 adipocytes. Lysates were utilized for quantitative proteome analysis using isobaric tags for relative and absolute quantitation (iTRAQ) combined with peptide separation by multi-dimensional liquid chromatography. Antioxidants and elongation factors, as well as glycolytic enzymes were increased in hypoxic adipocytes. These changes were supported by similar changes suggested by real-time PCR. The proteins showing changes are all potential targets for revering the mechanism behind the phenomenon of induction of obese adipocytes by hypoxia. This study can therefore aid in defining the proteomic changes that occur in adipocytes in response to oxygen stress, and can further characterize adipocyte metabolism and adaptation to low oxygen conditions.

subject areas

  • 3T3-L1 Cells
  • Adipocytes
  • Animals
  • Cell Hypoxia
  • Chromatography, Liquid
  • Glycolysis
  • Mice
  • Oxidative Stress
  • Oxygen
  • Protein Biosynthesis
  • Proteome
  • Proteomics
  • Reverse Transcriptase Polymerase Chain Reaction
  • Tandem Mass Spectrometry
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Research

keywords

  • Adipocytes
  • Hypoxia
  • Multi-dimensional separation
  • iTRAQ
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Identity

International Standard Serial Number (ISSN)

  • 0006-291X

Digital Object Identifier (DOI)

  • 10.1016/j.bbrc.2009.03.124

PubMed ID

  • 19336224
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Additional Document Info

start page

  • 135

end page

  • 140

volume

  • 383

issue

  • 1

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