Characterisation of CDKL5 transcript isoforms in human and mouse

Hector, R. D. , Dando, O., Landsberger, N., Kilstrup-Nielsen, C., Kind, P. C., Bailey, M. E.S. and Cobb, S. R. (2016) Characterisation of CDKL5 transcript isoforms in human and mouse. PLoS ONE, 11(6), e0157758. (doi:10.1371/journal.pone.0157758) (PMID:27315173) (PMCID:PMC4912119)

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Abstract

Mutations in the X-linked Cyclin-Dependent Kinase-Like 5 gene (CDKL5) cause early onset infantile spasms and subsequent severe developmental delay in affected children. Deleterious mutations have been reported to occur throughout the CDKL5 coding region. Several studies point to a complex CDKL5 gene structure in terms of exon usage and transcript expression. Improvements in molecular diagnosis and more extensive research into the neurobiology of CDKL5 and pathophysiology of CDKL5 disorders necessitate an updated analysis of the gene. In this study, we have analysed human and mouse CDKL5 transcript patterns both bioinformatically and experimentally. We have characterised the predominant brain isoform of CDKL5, a 9.7 kb transcript comprised of 18 exons with a large 6.6 kb 3’-untranslated region (UTR), which we name hCDKL5_1. In addition we describe new exonic regions and a range of novel splice and UTR isoforms. This has enabled the description of an updated gene model in both species and a standardised nomenclature system for CDKL5 transcripts. Profiling revealed tissue- and brain development stage-specific differences in expression between transcript isoforms. These findings provide an essential backdrop for the diagnosis of CDKL5-related disorders, for investigations into the basic biology of this gene and its protein products, and for the rational design of gene-based and molecular therapies for these disorders.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cobb, Dr Stuart and Hector, Dr Ralph and Bailey, Dr Mark
Authors: Hector, R. D., Dando, O., Landsberger, N., Kilstrup-Nielsen, C., Kind, P. C., Bailey, M. E.S., and Cobb, S. R.
College/School:College of Medical Veterinary and Life Sciences > Institute of Neuroscience and Psychology
College of Medical Veterinary and Life Sciences > School of Life Sciences
Journal Name:PLoS ONE
Publisher:Public Library of Science
ISSN:1932-6203
ISSN (Online):1932-6203
Published Online:17 June 2016
Copyright Holders:Copyright © 2016 The Authors
First Published:First published in PLoS ONE 11(6):e0157758
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
644651Developing and evaluating novel gene therapy approaches in Rett syndromeStuart CobbScottish Executive Health Department (SEHHD-CSO)ETM/334INP - CENTRE FOR NEUROSCIENCE