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Up-regulation of receptor interaction protein 140 promotes glucolipotoxicity-induced damage in MIN6 cells

Li Jun Xue1, Qi Huang2, Jiao E Zeng1

  • 1Department of Endocrinology, The second Clinical Medical college, Yangtze University, Jingzhou, Hubei, 434020, P.R. China.

Cellular and Molecular Biology (Noisy-Le-Grand, France)
|April 11, 2018
PubMed

Insights

Receptor interaction protein 140 (RIP140) promotes islet β cell damage from high glucose and lipids. Downregulating RIP140 reversed glucolipotoxicity, highlighting its role in metabolic balance.

Area of Science:

  • Cell Biology
  • Metabolic Regulation
  • Endocrinology

Background:

  • Receptor interaction protein 140 (RIP140) is crucial for metabolic balance.
  • Its role in glucose- and lipid-induced islet β cell damage remains unclear.

Purpose of the Study:

  • To investigate the function of RIP140 in glucolipotoxicity-induced damage in islet β cells.
  • To assess RIP140's impact on cell viability, apoptosis, oxidative stress, and insulin secretion.

Main Methods:

  • MIN6 cells were treated with high glucose and palmitic acid.
  • RIP140 expression was manipulated (up/downregulated) and analyzed via real-time PCR, western blotting, and microscopy.
  • Cell viability, apoptosis, oxidative stress, insulin secretion, and gene expression were assessed.

Main Results:

  • High glucose and palmitic acid increased RIP140 nuclear expression.
  • RIP140 overexpression promoted apoptosis and reduced cell viability.
  • Glucolipotoxicity-induced damage was mitigated by RIP140 downregulation using small interfering RNA (siRNA).

Conclusions:

  • RIP140 exacerbates glucolipotoxicity-induced damage in islet β cells.
  • Targeting RIP140 may offer a therapeutic strategy for managing metabolic dysfunction in pancreatic β cells.
Keywords:
Expression analysis.GlucolipotoxicityIslet β cellOxidative damageReceptor interaction protein 140

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