Identification of Circular RNA Profiles in the Liver of Diet-Induced Obese Mice and Construction of the ceRNA Network

Genes (Basel). 2023 Mar 10;14(3):688. doi: 10.3390/genes14030688.

Abstract

Obesity is a major risk factor for cardiovascular, cerebrovascular, metabolic, and respiratory diseases, and it has become an important social health problem affecting the health of the population. Obesity is affected by both genetic and environmental factors. In this study, we constructed a diet-induced obese C57BL/6J mouse model and performed deep RNA sequencing (RNA-seq) on liner-depleted RNA extracted from the liver tissues of the mice to explore the underlying mechanisms of obesity. A total of 7469 circular RNAs (circRNAs) were detected, and 21 were differentially expressed (DE) in the high-fat diet (HFD) and low-fat diet (LFD) groups. We then constructed a comprehensive circRNA-associated competing endogenous RNA (ceRNA) network. Bioinformatic analysis indicated that DE circRNAs associated with lipid metabolic-related pathways may act as miRNA sponges to modulate target gene expression. CircRNA1709 and circRNA4842 may serve as new candidates to regulate the expression of PTEN. This study provides systematic circRNA-associated ceRNA profiling in HFD mouse liver, and the results can aid early diagnosis and the selection of treatment targets for obesity in the future.

Keywords: competing endogenous RNA; noncoding RNA; obesity; transcriptome analysis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Diet, High-Fat / adverse effects
  • Gene Expression Profiling / methods
  • Liver / metabolism
  • Mice
  • Mice, Inbred C57BL
  • Mice, Obese
  • MicroRNAs* / genetics
  • MicroRNAs* / metabolism
  • Obesity / genetics
  • RNA, Circular* / genetics
  • RNA, Circular* / metabolism

Substances

  • RNA, Circular
  • MicroRNAs

Grants and funding

This research was funded by the Hebei Provincial Innovation Capacity Improvement Plan Project (20567632H); Hebei Natural Science Foundation (C2019405105); Project of Innovation and Entrepreneurship Training Plan for College Students of Hebei Province (S202110092001).