An Aneuploid Mouse Strain Carrying Human Chromosome 21 with Down Syndrome Phenotypes

Author:

O'Doherty Aideen12345,Ruf Sandra12345,Mulligan Claire12345,Hildreth Victoria12345,Errington Mick L.12345,Cooke Sam12345,Sesay Abdul12345,Modino Sonie12345,Vanes Lesley12345,Hernandez Diana12345,Linehan Jacqueline M.12345,Sharpe Paul T.12345,Brandner Sebastian12345,Bliss Timothy V. P.12345,Henderson Deborah J.12345,Nizetic Dean12345,Tybulewicz Victor L. J.12345,Fisher Elizabeth M. C.12345

Affiliation:

1. Department of Neurodegenerative Disease, Institute of Neurology, Queen Square, London WC1N 3BG, UK.

2. Medical Research Council Prion Unit, Institute of Neurology, Queen Square, London WC1N 3BG, UK.

3. National Institute for Medical Research, The Ridgeway, Mill Hill, London NW7 1AA, UK.

4. Centre for Haematology, Institute of Cell and Molecular Science, Barts and The London, Queen Mary's School of Medicine, 4 Newark Street, London E1 2AT, UK.

5. Institute of Human Genetics, University of Newcastle upon Tyne, International Centre for Life, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK.

Abstract

Aneuploidies are common chromosomal defects that result in growth and developmental deficits and high levels of lethality in humans. To gain insight into the biology of aneuploidies, we manipulated mouse embryonic stem cells and generated a trans-species aneuploid mouse line that stably transmits a freely segregating, almost complete human chromosome 21 (Hsa21). This “transchromosomic” mouse line, Tc1, is a model of trisomy 21, which manifests as Down syndrome (DS) in humans, and has phenotypic alterations in behavior, synaptic plasticity, cerebellar neuronal number, heart development, and mandible size that relate to human DS. Transchromosomic mouse lines such as Tc1 may represent useful genetic tools for dissecting other human aneuploidies.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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