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An Adipocyte Cell Culture Model to Study the Impact of Protein and Micro-RNA Modulation on Adipocyte Function
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Regulation of Adipose Tissue Inflammation and Insulin Resistance by MAPK Phosphatase 5

Yongliang Zhang1, Thang Nguyen2, Peng Tang1

  • 1From the Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore, the Immunology Programme, Life Science Institute, National University of Singapore, Singapore 117597, Singapore.

The Journal of Biological Chemistry
|April 30, 2015
PubMed

Insights

MAPK phosphatase 5 (MKP5) deficiency causes insulin resistance and glucose intolerance in mice by promoting inflammation in white adipose tissue. This highlights MKP5

Area of Science:

  • Metabolic disorders
  • Immunology
  • Cellular signaling

Background:

  • Obesity and type 2 diabetes are global health concerns.
  • Mechanisms underlying insulin resistance are not fully understood.

Purpose of the Study:

  • To investigate the role of MAPK phosphatase 5 (MKP5) in metabolic regulation and insulin resistance.

Main Methods:

  • Studied MKP5-deficient mice and wild-type (WT) controls.
  • Analyzed macrophage infiltration, adipose tissue inflammation, and key signaling pathways (AKT, p38).

Main Results:

  • MKP5-deficient mice developed spontaneous insulin resistance and later glucose intolerance.
  • Increased macrophage infiltration and inflammation were observed in white adipose tissue.
  • Reduced AKT activation and enhanced p38 activity were noted in visceral adipose tissue.

Conclusions:

  • MKP5 plays a critical role in controlling inflammation in white adipose tissue.
  • MKP5 deficiency contributes to the development of metabolic disorders, including insulin resistance.
Keywords:
MAPK phosphataseinflammationinsulin resistanceobesitytype 2 diabetes

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