Novel MicroRNA Regulators of Atrial Natriuretic Peptide Production

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Novel MicroRNA Regulators of Atrial Natriuretic Peptide Production

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Title: Novel MicroRNA Regulators of Atrial Natriuretic Peptide Production
Author: Wu, Connie; Arora, Pankaj; Agha, Obiajulu; Hurst, Liam A.; Allen, Kaitlin; Nathan, Daniel I.; Hu, Dongjian; Jiramongkolchai, Pawina; Smith, J. Gustav; Melander, Olle; Trenson, Sander; Janssens, Stefan P.; Domian, Ibrahim J.; Wang, Thomas J.; Bloch, Kenneth; Buys, Emmanuel; Bloch, Donald Bendit; Newton-Cheh, Christopher Holmes

Note: Order does not necessarily reflect citation order of authors.

Citation: Wu, Connie, Pankaj Arora, Obiajulu Agha, Liam A. Hurst, Kaitlin Allen, Daniel I. Nathan, Dongjian Hu, et al. 2016. “Novel MicroRNA Regulators of Atrial Natriuretic Peptide Production.” Molecular and Cellular Biology 36 (14) (May 16): 1977–1987. doi:10.1128/mcb.01114-15.
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Abstract: Atrial natriuretic peptide (ANP) has a central role in regulating blood pressure in humans. Recently, microRNA 425 (miR-425) was found to regulate ANP production by binding to the mRNA of NPPA, the gene encoding ANP. mRNAs typically contain multiple predicted microRNA (miRNA)-binding sites, and binding of different miRNAs may independently or coordinately regulate the expression of any given mRNA. We used a multifaceted screening strategy that integrates bioinformatics, next-generation sequencing data, human genetic association data, and cellular models to identify additional functional NPPA-targeting miRNAs. Two novel miRNAs, miR-155 and miR-105, were found to modulate ANP production in human cardiomyocytes and target genetic variants whose minor alleles are associated with higher human plasma ANP levels. Both miR-15 and miR-105 repressed NPPA mRNA in an allele-specific manner, with the minor allele of each respective variant conferrin resistance to the miRNA either by disruption of miRNA base pairing or by creation of wobble base pairing. Moreover, miR-15 enhanced the repressive effects of miR-425 on ANP production in human cardiomyocytes. Our study combines computational genomic, and cellular tools to identify novel miRNA regulators of ANP production that could be targeted to raise ANP levels which may have applications for the treatment of hypertension or heart failure.
Published Version: 10.1128/mcb.01114-15
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