Cited by 77Down syndrome and intellectual disability researchAlzheimer's disease research and treatmentsVirus-based gene therapy research

Normalization of Dyrk1A expression by AAV2/1-shDyrk1A attenuates hippocampal-dependent defects in the Ts65Dn mouse model of down syndrome

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Altafaj, Xavier, Martín, Eduardo D., Ortiz-Abalia, Jon, Valderrama, Aitana, Lao-Peregrín, Cristina, Dierssen, Mara, Fillat, Cristina·2013·Neurobiology of Disease

Abstract

The cognitive dysfunctions of Down Syndrome (DS) individuals are the most disabling alterations caused by the trisomy of human chromosome 21 (HSA21). In trisomic Ts65Dn mice, a genetic model for DS, the overexpression of HSA21 homologous genes has been associated with strong visuo-spatial cognitive alterations, ascribed to hippocampal dysfunction. In the present study, we evaluated whether the normalization of the expression levels of Dyrk1A (Dual specificity tyrosine-phosphorylation-regulated kinase 1A), a candidate gene for DS, might correct hippocampal defects in Ts65Dn mice. In the hippocampus of 2 month-old Ts65Dn mice, such normalization was achieved through the stereotaxical injection of adeno-associated viruses containing a short hairpin RNA against Dyrk1A (AAV2/1-shDyrk1A) and a luciferase reporter gene. The injected hippocampi were efficiently transduced, as shown by bioluminescence in vivo imaging, luciferase activity quantification and immunohistochemical analysis. At the molecular level, viral infusion allowed the normalization of the targeted Dyrk1A expression, as well as of the key players of the MAPK/CREB pathway. The electrophysiological recordings of hippocampal slices from Ts65Dn mice injected with AAV2/1-shDyrk1A displayed attenuation of the synaptic plasticity defects of trisomic mice. In contrast, contralateral hippocampal injection with an AAV2/1 control virus containing a scrambled sequence, showed neither the normalization of Dyrk1A levels nor changes…

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Crossref · 10.1016/j.nbd.2012.11.017

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  • Reducing DYRK1A protein levels in the hippocampus of 2-month-old Ts65Dn mice by stereotaxic injection of AAV-shDyrk1a improved synaptic plasticity but only corrected thigmotaxic abnormalities in the Morris water maze.

    “Reducing DYRK1A protein levels in the hippocampus of 2-month-old Ts65Dn mice by stereotaxic injection of AAV-shDyrk1a improved synaptic plasticity but only corrected thigmotaxic abnormalities in the Morris water maze (Altafaj et al., 2013).”

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Authors
Altafaj, X., Martín, E. D., Ortiz-Abalia, J., Valderrama, A., Lao-Peregrín, C., Dierssen, M., & Fillat, C.
Affiliations
  • Institut d'Investigació Biomédica de Bellvitge (ES)
  • University of Castilla-La Mancha (ES)
  • Centre for Biomedical Network Research on Rare Diseases (ES)
  • Universitat Pompeu Fabra (ES)
Corresponding author
  • Altafaj, Xavier
  • Fillat, Cristina
Venue
Neurobiology of Disease
Publisher
Elsevier BV
Published
2013-04
Volume
52
Pages
117-127
ISSN
0969-9961 (ISSN-L)
OpenAlex
W1997948920
Cited by
75
References
37
Citations by year
2026: 2 · 2025: 3 · 2024: 10 · 2023: 7 · 2022: 3 · 2021: 8 · 2019: 8 · 2018: 7 · 2017: 7 · 2016: 3 · 2015: 4 · 2014: 9 · 2013: 4
FWCI
5.25
Type
journal article
Language
en
Open access
Locations
  • Neurobiology of Disease (publishedVersion)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Spanish Ministry of Health (FIS PI041559, PI 082038)
  • Jérôme Lejeune Foundation (SAF2010-16427, BIO2008-04692-C03-02, BIO2011-30299-C02-01/02)
  • EU FP6-2005-LIFESCIHEALTH-6 ANEUPLOIDY (037627)
  • CureFXS ERare-EU/FIS (PS09102673, PS09/00733)
  • Instituto de Salud Carlos III (CP10/00548, PS09/00733, IIS10/00014)
  • Fondo Europeo de Desarrollo Regional (FEDER
  • Generalitat de Catalunya (SGR091527, SGR091313)
  • Consejería de Educación Ciencia y Cultura (JCCM) (PEII10-0095-8727)
  • Ministerio de Ciencia e Innovación (MICINN)
  • INCRECyT project (JCCM and PCYTA) (BFU2011-26339/BFI)
Topics
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Down syndrome and intellectual disability research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
Keywords
Down syndrome, DYRK1A, Ts65Dn mouse model, adeno-associated virus, shRNA, gene silencing, hippocampus, synaptic plasticity, cognitive impairment, thigmotaxis, visuospatial learning, therapeutic target
MeSH terms
Dyrk Kinases, Dependovirus, Animals, Behavior, Animal, Disease Models, Animal, Down Syndrome, Hippocampus, Mice, Transgenic, Neuronal Plasticity, Phosphorylation, Protein-Tyrosine Kinases, Synapses, Protein Serine-Threonine Kinases, Maze Learning, Mice

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