Mass Spectrometry Letters

Korean Society for Mass Spectrometry (한국질량분석학회)
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Investigation on Lipopolysaccharide Activated Microglia by Phosphoproteomics and Phosphoinositide Lipidomics

  • Kim, Young Jun (Department of Applied Biochemistry, Konkuk University) ;
  • Kim, Hackyoung (Department of Applied Biochemistry, Konkuk University) ;
  • Noh, Kwangmo (Nanotechnology Research Center, Konkuk University)
  • Received : 2014.07.19
  • Accepted : 2014.09.12
  • Published : 2014.09.30
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Abstract

Microglia are the confined immune cells of the central nervous system (CNS). In response to injury or infection, microglia readily become activated and release proinflammatory mediators that are believed to contribute to microglia-mediated neurodegeneration. In the present study, inflammation was induced in the immortalized murine microglial cell line BV-2 by lipopolysaccharide (LPS) treatment. We firstly performed phosphoproteomics analysis and phosphoinositide lipidomics analysis with LPS activated microglia in order to compare phosphorylation patterns in active and inactive microglia and to detect the pattern of changes in phosphoinositide regulation upon activation of microglia. Mass spectrometry analysis of the phosphoproteome of the LPS treatment group compared to that of the untreated control group revealed a notable increase in the diversity of cellular phosphorylation upon LPS treatment. Additionally, a lipidomics analysis detected significant increases in the amounts of phosphoinositide species in the LPS treatment. This investigation could provide an insight for understanding molecular mechanisms underlying microglia-mediated neurodegenerative diseases.

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References

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