Circular RNA Expression in the Brain of a Neonatal Rat Model of Periventricular White Matter Damage

Lihua Zhu1, Ruibin Zhao2, Li Huang3

  • 1Institute of clinical, Jiangsu Health Vocational College, Nanjing, China.

Insights

Periventricular white matter damage (PWMD) in preterm infants involves altered circular RNA (circRNA) expression in brain tissue. These circRNAs may serve as novel diagnostic and therapeutic targets for PWMD.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genomics

Background:

  • Periventricular white matter damage (PWMD) is a primary neurological injury in surviving preterm infants.
  • Understanding the molecular mechanisms underlying PWMD is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate global changes and characteristics of circular RNA (circRNA) expression in rat brains with PWMD.
  • To identify potential diagnostic and therapeutic targets for PWMD.

Main Methods:

  • Deep RNA sequencing was used to compare circRNA expression profiles in PWMD rat brains versus control tissues.
  • Bioinformatics, quantitative reverse-transcription polymerase chain reaction (qRT-PCR), Gene Ontology (GO), and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed.
  • Network analysis predicted circRNA-microRNA-target gene interactions.

Main Results:

  • 2151 circRNAs were dysregulated in PWMD brain tissues, with 52 over-expressed and 46 under-expressed among 98 significantly altered circRNAs.
  • Glutamatergic synapse and VEGF signaling pathways, linked to hypoxia/ischemia, were enriched.
  • Relationships between specific microRNAs (miRNAs) and HIF-1α, and potential associations with target genes, were identified.

Conclusions:

  • Distinct circRNA expression patterns indicate active response to hypoxia-ischemia in PWMD.
  • Identified circRNAs represent potential novel diagnostic and therapeutic targets for PWMD.
Abstract

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