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Related Experiment Video

Updated: Sep 3, 2025

Isolation and Culturing of Primary Murine Adipocytes from Lean and Obese Mice
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In Vivo Reductionist Approach Identifies miR-15a Protecting Mice From Obesity.

Nicola Murgia1, Yuan Ma1, Syeda Sadia Najam1

  • 1Laboratory of Molecular Neurobiology, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.

Frontiers in Endocrinology
|July 25, 2022
PubMed
Summary
This summary is machine-generated.

MicroRNA miR-15a-5p helps prevent obesity by regulating appetite-controlling neurons in the brain. It targets the Bace1 gene, offering potential new treatments for metabolic diseases.

Keywords:
Dicerenergy homeostasishypothalamusin situ CRISPR/Cas9 knock-outmicemicroRNAobesity

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Area of Science:

  • Neuroscience
  • Genetics
  • Metabolic Diseases

Background:

  • Obesity is a significant global health issue.
  • Brain regions like the arcuate hypothalamic nucleus (ARH) control energy homeostasis.
  • Key neuronal populations in the ARH include AgRP and POMC neurons.

Purpose of the Study:

  • To investigate the role of miR-15a-5p in obesity.
  • To identify direct targets of miR-15a-5p involved in energy metabolism.

Main Methods:

  • Utilized an in vivo reductionist approach.
  • Employed POMC-Cre-dependent CRISPR-Cas9 gene editing.
  • Identified direct gene targets using molecular biology techniques.

Main Results:

  • Demonstrated that miR-15a-5p protects against obesity.
  • Identified Bace1 as a direct target of miR-15a-5p.
  • Bace1 is implicated in energy metabolism imbalance.

Conclusions:

  • miR-15a-5p plays a protective role in preventing obesity.
  • Non-coding RNAs, like miR-15a-5p, are crucial regulators of energy homeostasis.
  • Findings may lead to novel therapeutic strategies for metabolic disorders.