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The microRNA expression profile in rat lung tissue early after burn injury

Donghai Zhang, Yang Chang, Shaofang Han

  • 1Department of Burn and Plastic Surgery, the First Affiliated Hospital of the PLA General Hospital, Beijing-People's Republic China. cjk304@126.com.

Ulusal Travma Ve Acil Cerrahi Dergisi = Turkish Journal of Trauma & Emergency Surgery : TJTES
|May 23, 2018
PubMed
Abstract

Insights

This study reveals that microRNAs (miRNAs) play a key role in burn-induced acute lung injury. Differentially expressed miRNAs are linked to inflammation and apoptosis in damaged lung tissue.

Area of Science:

  • Biomedical research
  • Molecular biology
  • Pathophysiology

Background:

  • Severe burns can lead to acute lung injury, but the underlying mechanisms are poorly understood.
  • MicroRNAs (miRNAs) are crucial regulators of biological processes, yet their involvement in burn-related lung injury remains unexplored.

Purpose of the Study:

  • To investigate the role of microRNAs (miRNAs) in the development of acute lung injury following severe burns.
  • To identify differentially expressed miRNAs and their associated molecular pathways in burn-induced lung injury.

Main Methods:

  • Utilized a rat model of severe burn to induce acute lung injury.
  • Analyzed lung tissue using hematoxylin and eosin staining, miRNA array hybridization, and real-time quantitative polymerase chain reaction (RT-qPCR).
  • Employed bioinformatics, Gene Ontology, and Kyoto Encyclopedia of Genes and Genomes databases to predict target genes and pathways; confirmed inflammation and apoptosis markers.

Main Results:

  • Identified 21 upregulated and 3 downregulated miRNAs in the burn group compared to the sham group.
  • Bioinformatics analysis indicated that target genes of these miRNAs are significantly enriched in inflammation and apoptosis-related biological processes and pathways.
  • Confirmed increased neutrophil infiltration and apoptosis in lung tissues from burned rats.

Conclusions:

  • Differentially expressed miRNAs are implicated in the pathogenesis of burn-induced acute lung injury.
  • These miRNAs likely contribute to lung damage by modulating inflammatory responses and apoptotic processes.

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