Gene expression profile analysis of the rabbit retinal vein occlusion model

PLoS One. 2020 Jul 31;15(7):e0236928. doi: 10.1371/journal.pone.0236928. eCollection 2020.

Abstract

The rabbit retinal vein occlusion (RVO) model is an experimental system that mimics retinal ischemic diseases in humans. The rabbit RVO model is widely used to assess the therapeutic efficacy of various experimental surgical procedures. In the present study, we measured temporal retinal expression of Vegfa, which is known as an ischemic response gene, in rabbit RVO. This analysis revealed that the retinal Vegfa transcriptional response began 7 days after generation of RVO, rather than immediately after induction of ischemia. Next, in order to analyze ischemia-induced changes in gene expression profiles, we performed microarray analysis of day 7 RVO retina versus control retina. The angiogenic regulators Dcn and Mmp1 and pro-inflammatory factors Mmp12 and Cxcl13 were significantly upregulated in RVO retinas. Further, we suggest that epigenetic regulation via the REST/cofactor-complex could contribute to RVO pathology. Among human homologous genes in rabbits, genes associated with hypoxia, angiogenesis, and inflammation were significantly upregulated in RVO retinas. Components of the Tumor necrosis factor-alpha (TNFα) and Nuclear factor-kappa B (NF-κB) pathways, which play regulatory roles in angiogenesis and inflammation, were significantly upregulated in RVO, and the expression levels of downstream factors, such as the transcription factor AP-1 and chemokines, were increased. Further, connectivity map analyses suggested that inhibitors of the NF-κB pathway are potential therapeutic agents for retinal ischemic disease. The present study revealed new insights into the pathology of retinal ischemia using the rabbit RVO model, which accurately recapitulates human disease.

MeSH terms

  • Angiogenesis Inducing Agents / metabolism
  • Animals
  • Chemokines / metabolism
  • Connectome
  • Disease Models, Animal
  • Epigenesis, Genetic
  • Fluorescein Angiography
  • Gene Expression Regulation
  • Hypoxia / metabolism
  • Inflammation / metabolism
  • Ischemia / metabolism*
  • Matrix Metalloproteinase 1 / genetics
  • Matrix Metalloproteinase 1 / metabolism
  • Matrix Metalloproteinase 12 / genetics
  • Matrix Metalloproteinase 12 / metabolism
  • Microarray Analysis
  • NF-kappa B / genetics
  • NF-kappa B / metabolism
  • Rabbits
  • Retina / pathology*
  • Retinal Vein Occlusion* / genetics
  • Retinal Vein Occlusion* / metabolism
  • Transcriptome
  • Vascular Endothelial Growth Factor A / genetics
  • Vascular Endothelial Growth Factor A / metabolism

Substances

  • Angiogenesis Inducing Agents
  • Chemokines
  • NF-kappa B
  • Vascular Endothelial Growth Factor A
  • Matrix Metalloproteinase 12
  • Matrix Metalloproteinase 1

Grants and funding

The author(s) received no specific funding for this work.