4.5 Article

Microarray assay of circular RNAs reveals cicRNA.7079 as a new anti-apoptotic molecule in spinal cord injury in mice

Journal

BRAIN RESEARCH BULLETIN
Volume 164, Issue -, Pages 157-171

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.brainresbull.2020.08.004

Keywords

Circular RNA; cicRNA.7079; Spinal cord injury; Apoptosis; Mouse

Categories

Funding

  1. National Natural Science Foundation of China [81673777, 81572229, 81972138]
  2. Zhejiang Provincial Natural Science Foundation of China [Y19H170008]
  3. Key Program of Administration of Traditional Chinese Medicine, Zhejiang Province [2018ZZ015]

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Traumatic spinal cord injury (SCI) can lead to motor disturbance, sensory deficit, or autonomic dysfunction. The role of circRNAs in the pivotal physiopathological processes of SCI has been demonstrated recently. However, no similar research has been performed to explore the circRNAs involved in apoptosis after SCI. The differentially expressed circRNAs in mice spinal cord three days after SCI were originally detected with microarray assay (n = 4/group). Subsequently, potential apoptosis-related circRNAs were predicted by comprehensive bioinformatics analysis. In total, 1131 circRNAs varied (>2-fold change, p < 0.05) in the injured mice spinal cord. The characters of these circRNAs were summarized. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis was applied to predict the primary function of these circRNAs. 148 circRNAs were found to be correlated to the apoptosis injury progress in after SCI. Moreover, an apoptosis-related ceRNA network was constructed. In loss-of-function experiments, cicRNA.7079 knockdown enhanced apoptosis in NSC-34 motor neurons. This study may contribute to new insights into the mechanism of apoptosis after SCI. The anticipation of anti-apoptosis circRNA. 7079 may provide potential research targets for SCI in mice.

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