Systematic Analysis of RNA Regulatory Network in Rat Brain after Ischemic Stroke

Biomed Res Int. 2018 Jan 8:2018:8354350. doi: 10.1155/2018/8354350. eCollection 2018.

Abstract

Although extensive studies have identified large number of microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) in ischemic stroke, the RNA regulation network response to focal ischemia remains poorly understood. In this study, we simultaneously interrogate the expression profiles of lncRNAs, miRNAs, and mRNAs changes during focal ischemia induced by transient middle cerebral artery occlusion. A set of 1924 novel lncRNAs were identified and may involve brain injury and DNA repair as revealed by coexpression network analysis. Furthermore, many short interspersed elements (SINE) mediated lncRNA:mRNA duplexes were identified, implying that lncRNAs mediate Staufen1-mediated mRNA decay (SMD) which may play a role during focal ischemia. Moreover, based on the competitive endogenous RNA (ceRNA) hypothesis, a stroke regulatory ceRNA network which reveals functional lncRNA:miRNA:mRNA interactions was revealed in ischemic stroke. In brief, this work reports a large number of novel lncRNAs responding to focal ischemia and constructs a systematic RNA regulation network which highlighted the role of ncRNAs in ischemic stroke.

MeSH terms

  • Animals
  • Disease Models, Animal
  • Gene Expression Regulation / genetics
  • Gene Regulatory Networks / genetics
  • Humans
  • Ischemia / genetics*
  • Ischemia / physiopathology
  • MicroRNAs / genetics*
  • RNA Stability / drug effects
  • RNA, Long Noncoding / genetics*
  • Rats
  • Short Interspersed Nucleotide Elements
  • Stroke / genetics*
  • Stroke / physiopathology

Substances

  • MicroRNAs
  • RNA, Long Noncoding