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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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An Adipocyte Cell Culture Model to Study the Impact of Protein and Micro-RNA Modulation on Adipocyte Function

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miR-370-3p Regulates Adipogenesis through Targeting Mknk1

Peiwen Zhang1,2, Xinrong Li1,2, Shunhua Zhang1,2

  • 1College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.

Molecules (Basel, Switzerland)
|November 27, 2021
PubMed

Insights

MicroRNA miR-370-3p inhibits fat accumulation by regulating adipogenesis and fatty acid metabolism. Lower miR-370-3p levels promote fat buildup, while its overexpression reduces it.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Genetics

Background:

  • Excessive fat accumulation is linked to obesity and metabolic diseases.
  • MicroRNAs (miRNAs) are key regulators of gene expression, including those involved in fat metabolism.
  • miRNAs can act as inhibitory factors against fat accumulation.

Purpose of the Study:

  • To investigate the role of miR-370-3p in adipogenesis and fatty acid metabolism.
  • To determine the effect of miR-370-3p expression levels on lipid accumulation.
  • To identify the molecular targets and pathways regulated by miR-370-3p.

Main Methods:

  • Comparative analysis of miR-370-3p expression in mice on high-fat vs. normal diets.
  • Overexpression and inhibition of miR-370-3p in cell cultures (3T3-L1 preadipocytes) and in vivo.
  • Measurement of adipogenic marker gene expression and lipid accumulation.
  • Identification and validation of Mknk1 as a target gene of miR-370-3p.

Main Results:

  • miR-370-3p expression was lower in mice fed a high-fat diet.
  • Overexpression of miR-370-3p suppressed adipogenic markers and reduced lipid accumulation.
  • Inhibition of miR-370-3p promoted preadipocyte proliferation and differentiation.
  • Mknk1 was identified as a target gene, playing an opposing role in adipogenesis.
  • miR-370-3p regulates fatty acid metabolism, potentially by modulating saturated and polyunsaturated fatty acid levels.

Conclusions:

  • miR-370-3p plays a critical role in regulating adipogenesis.
  • The miR-370-3p/Mknk1 axis is a key pathway in fatty acid metabolism.
  • miR-370-3p represents a potential therapeutic target for obesity and related metabolic disorders.
Keywords:
adipogenesisdifferentiationfatty acid compositionmiR-370-3pproliferation

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