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Antisense Oligonucleotide Therapeutic Approach for Suppression of Ataxin-1 Expression: A Safety Assessment.

Abstract：

:Spinocerebellar ataxia type 1 (SCA1) is a lethal, autosomal dominant neurodegenerative disease caused by a polyglutamine expansion in the ATAXIN-1 (ATXN1) protein. Preclinical studies demonstrate the therapeutic efficacy of approaches that target and reduce Atxn1 expression in a non-allele-specific manner. However, studies using Atxn1-/- mice raise cautionary notes that therapeutic reductions of ATXN1 might lead to undesirable effects such as reduction in the activity of the tumor suppressor Capicua (CIC), activation of the protease β-secretase 1 (BACE1) and subsequent increased amyloidogenic cleavage of the amyloid precursor protein (APP), or a reduction in hippocampal neuronal precursor cells that would impact hippocampal function. Here, we tested whether an antisense oligonucleotide (ASO)-mediated reduction of Atxn1 produced unwanted effects involving BACE1, CIC activity, or reduction in hippocampal neuronal precursor cells. Notably, no effects on BACE1, CIC tumor suppressor function, or number of hippocampal neuronal precursor cells were found in mice subjected to a chronic in vivo ASO-mediated reduction of Atxn1. These data provide further support for targeted reductions of ATXN1 as a therapeutic approach for SCA1.

journal_name

Mol Ther Nucleic Acids

journal_title

Molecular therapy. Nucleic acids

authors

O'Callaghan B,Hofstra B,Handler HP,Kordasiewicz HB,Cole T,Duvick L,Friedrich J,Rainwater O,Yang P,Benneyworth M,Nichols-Meade T,Heal W,Ter Haar R,Henzler C,Orr HT

doi

10.1016/j.omtn.2020.07.030

subject

Has Abstract

pub_date

2020-09-04 00:00:00

pages

1006-1016

issn

2162-2531

pii

S2162-2531(20)30219-5

journal_volume

21

pub_type

杂志文章

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