Development of Novel Chemically-Modified Nucleic Acid Molecules for Efficient Inhibition of Human MAPT Gene Expression.
Genes (Basel)
; 11(6)2020 06 19.
Article
em En
| MEDLINE
| ID: mdl-32575375
ABSTRACT
The hyperphosphorylation of the microtubule-associated protein tau (MAPT) has been implicated in various neurological diseases, including Alzheimer's disease. It has been hypothesized that the reduction of MAPT would result in depolymerizing neurofibrillary tangles and could be a potential strategy for the treatment of Alzheimer's disease and other tauopathies. In this study, we report the development of novel DNAzymes and splice-modulating antisense oligonucleotides (AOs) for the efficient inhibition of MAPT. We designed and synthesized a range of DNAzymes and 2'-O-methyl (2'-OMe)-modified AOs on a phosphorothioate (PS) backbone targeting various exons across the MAPT gene transcript. Our results demonstrated that RNV563, an arm-loop-arm-type DNAzyme targeting exon 13, and an AO candidate AO4, targeting exon 4, efficiently downregulated MAPT RNA expression by 58% and 96%, respectively. In addition, AO4 also reduced the MAPT protein level by 74%. In line with our results, we believe that AO4 could be used as a potential therapeutic molecule for Alzheimer's disease and other tauopathies.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oligonucleotídeos Antissenso
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Proteínas tau
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DNA Catalítico
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Doença de Alzheimer
Limite:
Humans
Idioma:
En
Revista:
Genes (Basel)
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Austrália