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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2018, Vol. 23 ›› Issue (10): 1081-1087.doi: 10.12092/j.issn.1009-2501.2018.10.001

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Screening and bioinformatics analysis of differential microRNA in nitroglycerin-tolerant rat aorta

ZENG Zhenhua1, LIU Jianxin2, CAO Chunya2, WU Weihua2   

  1. 1 Biomedical Research Center, Hunan University of Medicine, Huaihua 418000, Hunan, China; 2 School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, Hunan, China
  • Received:2018-05-30 Revised:2018-06-25 Online:2018-10-26 Published:2018-10-25

Abstract:

AIM: To screen the differential expression of microRNA (miRNA) in nitroglycerin-tolerant rat aorta and to analyze their target genes and function. METHODS: Sprague Dawley (SD) rats were treated with nitroglycerin (100 mg·kg-1·time-1 for 3 days, three times a day, s.c). Then, miRNA sequencing technology and qRT-PCR were used to find differential miRNAs involved in nitroglycerin-tolerant rats. Furthermore, bioinformatics analysis was performed to predict target genes regulated by these differential miRNAs, and to analyze the enriched gene ontology (GO) and signaling pathway. RESULTS: Compared with control group, the expression of 28 miRNAs changed significantly in nitroglycerin-tolerant group, of which 16 were known. 12 up-regulated and 4 down-regulated were obtained among the 16 miRNAs. The expression of miR-487b-3p and miR-503-5p were detected by qRT-PCR showed the similar trend as well as the sequencing results. Bioinformatics analysis showed that the target genes of differential miRNAs were mainly enriched in protein binding and metabolic pathways. CONCLUSION: The expression of miRNA in nitroglycerin-tolerant rat aorta changes significantly, and these differential miRNAs are involved in the development of nitroglycerin tolerance by regulating their target genes.

Key words: nitroglycerin, tolerance, microRNA, bioinformatics

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