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Feng HJ, Ouyang W, Liu JH, Sun YG, Hu R, Huang LH, Xian JL, Jing CF, Zhou MJ. Global microRNA profiles and signaling pathways in the development of cardiac hypertrophy. ACTA ACUST UNITED AC 2014; 47:361-8. [PMID: 24728214 PMCID: PMC4075303 DOI: 10.1590/1414-431x20142937] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 01/21/2014] [Indexed: 11/22/2022]
Abstract
Hypertrophy is a major predictor of progressive heart disease and has an adverse
prognosis. MicroRNAs (miRNAs) that accumulate during the course of cardiac
hypertrophy may participate in the process. However, the nature of any interaction
between a hypertrophy-specific signaling pathway and aberrant expression of miRNAs
remains unclear. In this study, Spague Dawley male rats were treated with transverse
aortic constriction (TAC) surgery to mimic pathological hypertrophy. Hearts were
isolated from TAC and sham operated rats (n=5 for each group at 5, 10, 15, and 20
days after surgery) for miRNA microarray assay. The miRNAs dysexpressed during
hypertrophy were further analyzed using a combination of bioinformatics algorithms in
order to predict possible targets. Increased expression of the target genes
identified in diverse signaling pathways was also analyzed. Two sets of miRNAs were
identified, showing different expression patterns during hypertrophy. Bioinformatics
analysis suggested the miRNAs may regulate multiple hypertrophy-specific signaling
pathways by targeting the member genes and the interaction of miRNA and mRNA might
form a network that leads to cardiac hypertrophy. In addition, the multifold changes
in several miRNAs suggested that upregulation of rno-miR-331*, rno-miR-3596b,
rno-miR-3557-5p and downregulation of rno-miR-10a, miR-221, miR-190, miR-451 could be
seen as biomarkers of prognosis in clinical therapy of heart failure. This study
described, for the first time, a potential mechanism of cardiac hypertrophy involving
multiple signaling pathways that control up- and downregulation of miRNAs. It
represents a first step in the systematic discovery of miRNA function in
cardiovascular hypertrophy.
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Affiliation(s)
- H J Feng
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - W Ouyang
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - J H Liu
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - Y G Sun
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - R Hu
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - L H Huang
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - J L Xian
- Zhujiang Hospital, Department of Nuclear Medicine, Southern Medical University, Guangzhou, China
| | - C F Jing
- National Engineering Research Center, South China Sea Marine Biotechnology, Sun Yat-Sen University, Guangzhou, China
| | - M J Zhou
- National Engineering Research Center, South China Sea Marine Biotechnology, Sun Yat-Sen University, Guangzhou, China
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