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Comprehensive phenotypic analysis of the Dp1Tyb mouse strain reveals a broad range of down syndrome-related phenotypes

Lana-Elola, E; Cater, H; Watson-Scales, S; Greenaway, S; Müller-Winkler, J; Gibbins, D; Nemes, M; ... Tybulewicz, VLJ; + view all (2021) Comprehensive phenotypic analysis of the Dp1Tyb mouse strain reveals a broad range of down syndrome-related phenotypes. Disease Models & Mechanisms 10.1242/dmm.049157. (In press). Green open access

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Abstract

Down syndrome (DS), trisomy 21, results in many complex phenotypes including cognitive deficits, heart defects and craniofacial alterations. Phenotypes arise from an extra copy of human chromosome 21 (Hsa21) genes. However, these dosage-sensitive causative genes remain unknown. Animal models enable identification of genes and pathological mechanisms. The Dp1Tyb mouse model of DS has an extra copy of 63% of Hsa21-orthologous mouse genes. In order to establish if this model recapitulates DS phenotypes, we comprehensively phenotyped Dp1Tyb mice using 28 tests of different physiological systems and found that 468 out of 1800 parameters were significantly altered. We show that Dp1Tyb mice have wide-ranging DS-like phenotypes including aberrant erythropoiesis and megakaryopoiesis, reduced bone density, craniofacial changes, altered cardiac function, a pre-diabetic state and deficits in memory, locomotion, hearing and sleep. Thus, Dp1Tyb mice are an excellent model for investigating complex DS phenotype-genotype relationships for this common disorder.

Type: Article
Title: Comprehensive phenotypic analysis of the Dp1Tyb mouse strain reveals a broad range of down syndrome-related phenotypes
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1242/dmm.049157
Publisher version: https://doi.org/10.1242/dmm.049157
Language: English
Additional information: Copyright © 2021. Published by The Company of Biologists Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution and reproduction in any medium provided that the original work is properly attributed.
Keywords: Craniofacial development, Diabetes, Down syndrome, Haematopoiesis, Hearing, Memory, Mouse model, Sleep
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Department of Neuromuscular Diseases
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Neurodegenerative Diseases
URI: https://discovery.ucl.ac.uk/id/eprint/10135671
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