Abstract:
Background:Persistent cardiac hypertrophy threatens health worldwide. Long non-coding RNAs (lncRNAs) attracted lots of attention in cardiac diseases such as cardiac hypertrophy. In this study, we aimed to study the function of KCNQ1OT1 in cardiac hypertrophy. Methods:We first used qRT-PCR to detect the expression of KCNQ1OT1 in Ang-II-induced cardiomyocytes and mouse cardiac hypertrophy models. The function of KCNQ1OT1 was investigated by a loss-of-function test. Analysis of the luciferase reporter gene and RNA pulldown confirmed the interaction between KCNQ1OT1 and miR-2054. The target gene of miR-2054 was predicted by bioinformatics analysis and confirmed by luciferase reporter gene detection. Rescue experiments were performed to evaluate the role of miR-2054/AKT3 in the function of KCNQ1OT1. Results:Our results suggested that KCNQ1OT1 was up-regulated in Ang-II-induced cardiomyocytes and transverse aortic constriction (TAC) mice. Knocking down of KCNQ1OT1 can reduce cell size and downregulate the expression of ANF, BNP and α-MHC in response to Ang-II. KCNQ1OT1 has been shown to compete competitively with miR-2054 and has a negative correlation with its expression. The combination of miR-2054 can reverse the effect of the KCNQ1OT1 combination in Ang-II-induced cardiomyocytes. In addition, AKT3 is a target of miR-2054 and mediates its effect on Ang-II-induced cardiomyocytes. Conclusions:Knockdown of KCNQ1OT1 could attenuate cardiac hypertrophy through modulation of the miR-2054/AKT3 axis.
journal_name
J Thorac Disjournal_title
Journal of thoracic diseaseauthors
Chen Y,Zhang Z,Zhu D,Zhao W,Li Fdoi
10.21037/jtd-20-203subject
Has Abstractpub_date
2020-09-01 00:00:00pages
4771-4780issue
9eissn
2072-1439issn
2077-6624pii
jtd-12-09-4771journal_volume
12pub_type
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journal_title:Journal of thoracic disease
pub_type: 杂志文章,评审
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journal_title:Journal of thoracic disease
pub_type: 杂志文章,评审
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journal_title:Journal of thoracic disease
pub_type: 杂志文章
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journal_title:Journal of thoracic disease
pub_type: 杂志文章
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journal_title:Journal of thoracic disease
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journal_title:Journal of thoracic disease
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doi:10.3978/j.issn.2072-1439.2012.08.02
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