Increased hippocampal excitability in miR-324-null mice

Hayman, Dan J., Modebadze, Tamara, Charlton, Sarah, Cheung, Kat, Soul, Jamie, Lin, Hua, Hao, Yao, Miles, Colin G., Tsompani, Dimitra, Jackson, Robert M., Briggs, Michael D., Piróg, Katarzyna A., Clark, Ian M., Barter, Matt J., Clowry, Gavin J., Lebeau, Fiona E. N. and Young, David A. (2021) Increased hippocampal excitability in miR-324-null mice. Scientific Reports, 11 (1). ISSN 2045-2322

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Abstract

MicroRNAs are non-coding RNAs that act to downregulate the expression of target genes by translational repression and degradation of messenger RNA molecules. Individual microRNAs have the ability to specifically target a wide array of gene transcripts, therefore allowing each microRNA to play key roles in multiple biological pathways. miR-324 is a microRNA predicted to target thousands of RNA transcripts and is expressed far more highly in the brain than in any other tissue, suggesting that it may play a role in one or multiple neurological pathways. Here we present data from the first global miR-324-null mice, in which increased excitability and interictal discharges were identified in vitro in the hippocampus. RNA sequencing was used to identify differentially expressed genes in miR-324-null mice which may contribute to this increased hippocampal excitability, and 3′UTR luciferase assays and western blotting revealed that two of these, Suox and Cd300lf, are novel direct targets of miR-324. Characterisation of microRNAs that produce an effect on neurological activity, such as miR-324, and identification of the pathways they regulate will allow a better understanding of the processes involved in normal neurological function and in turn may present novel pharmaceutical targets in treating neurological disease.

Item Type: Article
Faculty \ School: Faculty of Science > School of Biological Sciences
Faculty of Medicine and Health Sciences > School of Health Sciences
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Depositing User: LivePure Connector
Date Deposited: 27 May 2021 00:09
Last Modified: 12 Jun 2021 12:14
URI: https://ueaeprints.uea.ac.uk/id/eprint/80121
DOI: 10.1038/s41598-021-89874-1

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