Cited by 15Genetic Neurodegenerative DiseasesVirus-based gene therapy researchLysosomal Storage Disorders Research

Astrocyte transduction is required for rescue of behavioral phenotypes in the YAC128 mouse model with AAV-RNAi mediated HTT lowering therapeutics

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Stanek, Lisa M., Bu, Jie, Shihabuddin, Lamya S.·2019·Neurobiology of Disease

Abstract

Huntington's disease (HD) is a fatal autosomal dominant neurodegenerative disease caused by a CAG expansion, which translates into an elongated polyglutamine (polyQ) repeat near the amino-terminus of the huntingtin protein (HTT). This results in production of a toxic mutant huntingtin protein (mHTT) that leads to neuronal dysfunction and death. Currently, no disease-modifying treatments are available; however, numerous therapeutic strategies aimed at lowering HTT levels in the brain are under development. To date, studies have not closely examined the contribution of mHTT in neurons vs astrocytes to disease pathophysiology. To better understand the role of astrocytes in HD pathophysiology and the need for cell type specific targeting of HTT lowering therapeutic strategies, AAV capsids were employed that selectively transduce neurons, or both neurons and astrocytes. These vectors carrying miRNA sequences directed against HTT were injected into the YAC128 mouse model of HD to selectively lower HTT expression in neurons alone versus neurons and astrocytes. The results suggested that HTT lowering in neurons alone was not sufficient to rescue the motor phenotype in YAC128 mice. Furthermore, HTT lowering in both cell types was required to achieve maximal functional benefit. The study suggested that astrocyte dysfunction may play a critical role in HD pathogenesis, and thus astrocytes represent an important therapeutic target.

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Crossref · 10.1016/j.nbd.2019.04.015

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Authors
Stanek, L. M., Bu, J., & Shihabuddin, L. S.
Affiliations
Sanofi (United States) (US)
Corresponding author
Stanek, Lisa M.
ORCID
Bu, Jie
Venue
Neurobiology of Disease
Publisher
Elsevier BV
Published
2019-09
Volume
129
Pages
29-37
ISSN
0969-9961 (ISSN-L)
OpenAlex
W2942386241
Cited by
15
References
60
Citations by year
2026: 1 · 2025: 1 · 2024: 4 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 1
FWCI
0.96
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
Sanofi Genzyme
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Genetic Neurodegenerative Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Health Sciences › Medicine › Physiology › Lysosomal Storage Disorders Research
Keywords
Huntington's disease, astrocytes, RNA interference, adeno-associated virus vectors, YAC128 mouse model, microRNA, astrocyte dysfunction, polyglutamine repeat, neurodegeneration
MeSH terms
Huntingtin Protein, Dependovirus, Animals, Astrocytes, Brain, Disease Models, Animal, Genetic Vectors, Huntington Disease, Mice, Transgenic, Neurons, Phenotype, Transduction, Genetic, MicroRNAs, Mice

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