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

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

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...

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Bibliographic Details
Main Authors: Eva Lana-Elola, Heather Cater, Sheona Watson-Scales, Simon Greenaway, Jennifer Müller-Winkler, Dorota Gibbins, Mihaela Nemes, Amy Slender, Tertius Hough, Piia Keskivali-Bond, Cheryl L. Scudamore, Eleanor Herbert, Gareth T. Banks, Helene Mobbs, Tara Canonica, Justin Tosh, Suzanna Noy, Miriam Llorian, Patrick M. Nolan, Julian L. Griffin, Mark Good, Michelle Simon, Ann-Marie Mallon, Sara Wells, Elizabeth M. C. Fisher, Victor L. J. Tybulewicz
Format: Article
Language:English
Published: The Company of Biologists 2021-10-01
Series:Disease Models & Mechanisms
Subjects:
down syndrome
mouse model
craniofacial development
memory
sleep
hearing
diabetes
haematopoiesis
Online Access:http://dmm.biologists.org/content/14/10/dmm049157
Description
Summary: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 whether 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.
ISSN:1754-8403
1754-8411

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