In Vivo Evaluation of Candidate Allele-specific Mutant Huntingtin Gene Silencing Antisense Oligonucleotides

Huntington disease (HD) is a dominant, genetic neurodegenerative disease characterized by progressive loss of voluntary motor control, psychiatric disturbance, and cognitive decline, for which there is currently no disease-modifying therapy. HD is caused by the expansion of a CAG tract in the huntin...

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Veröffentlicht in:Molecular therapy 2014-12, Vol.22 (12), p.2093-2106
Hauptverfasser: Southwell, Amber L, Skotte, Niels H, Kordasiewicz, Holly B, Østergaard, Michael E, Watt, Andrew T, Carroll, Jeffrey B, Doty, Crystal N, Villanueva, Erika B, Petoukhov, Eugenia, Vaid, Kuljeet, Xie, Yuanyun, Freier, Susan M, Swayze, Eric E, Seth, Punit P, Bennett, Clarence Frank, Hayden, Michael R
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container_end_page 2106
container_issue 12
container_start_page 2093
container_title Molecular therapy
container_volume 22
creator Southwell, Amber L
Skotte, Niels H
Kordasiewicz, Holly B
Østergaard, Michael E
Watt, Andrew T
Carroll, Jeffrey B
Doty, Crystal N
Villanueva, Erika B
Petoukhov, Eugenia
Vaid, Kuljeet
Xie, Yuanyun
Freier, Susan M
Swayze, Eric E
Seth, Punit P
Bennett, Clarence Frank
Hayden, Michael R
description Huntington disease (HD) is a dominant, genetic neurodegenerative disease characterized by progressive loss of voluntary motor control, psychiatric disturbance, and cognitive decline, for which there is currently no disease-modifying therapy. HD is caused by the expansion of a CAG tract in the huntingtin (HTT) gene. The mutant HTT protein (muHTT) acquires toxic functions, and there is significant evidence that muHTT lowering would be therapeutically efficacious. However, the wild-type HTT protein (wtHTT) serves vital functions, making allele-specific muHTT lowering strategies potentially safer than nonselective strategies. CAG tract expansion is associated with single nucleotide polymorphisms (SNPs) that can be targeted by gene silencing reagents such as antisense oligonucleotides (ASOs) to accomplish allele-specific muHTT lowering. Here we evaluate ASOs targeted to HD-associated SNPs in acute in vivo studies including screening, distribution, duration of action and dosing, using a humanized mouse model of HD, Hu97/18, that is heterozygous for the targeted SNPs. We have identified four well-tolerated lead ASOs that potently and selectively silence muHTT at a broad range of doses throughout the central nervous system for 16 weeks or more after a single intracerebroventricular (ICV) injection. With further validation, these ASOs could provide a therapeutic option for individuals afflicted with HD.
doi_str_mv 10.1038/mt.2014.153
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We have identified four well-tolerated lead ASOs that potently and selectively silence muHTT at a broad range of doses throughout the central nervous system for 16 weeks or more after a single intracerebroventricular (ICV) injection. 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subjects Animals
Brain - metabolism
Brain - pathology
Disease Models, Animal
Drug dosages
Gene Silencing
Genes
Humans
Huntingtin Protein
Huntington Disease - genetics
Huntington Disease - pathology
Huntington Disease - therapy
Injections
Mice
Mice, Inbred C57BL
Molecular Targeted Therapy
Mutant Proteins - metabolism
Nerve Tissue Proteins - genetics
Nerve Tissue Proteins - metabolism
Oligonucleotides, Antisense - administration & dosage
Oligonucleotides, Antisense - pharmacology
Original
Polymorphism, Single Nucleotide
Proteins
Rats
Rats, Sprague-Dawley
Thionucleotides - administration & dosage
Thionucleotides - pharmacology
title In Vivo Evaluation of Candidate Allele-specific Mutant Huntingtin Gene Silencing Antisense Oligonucleotides
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