alexa Peptide-mediated cellular delivery of antisense oligonucleotides and their analogues.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Stem Cell Research & Therapy

Author(s): Gait MJ

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Abstract Improving the delivery of synthetic oligonucleotides and their analogues into cells is an important goal in the full development of antisense technology for control of gene expression in cell culture and in vivo. This review describes the harnessing of certain peptides, either as noncovalent complexes or as covalent conjugates, to enhance the delivery of antisense oligonucleotides into cells and/or to affect their cell localization. Phosphodiester and phosphorothioate oligonucleotides are included as well as peptide nucleic acids (PNAs), analogues of oligonucleotides where the negatively charged phosphate backbone is replaced by a neutral amide linkage. This review contains a critical evaluation of claims for certain peptide-oligonucleotide conjugates to translocate into cultured cells by a non-energy-dependent nonendosomal route. In addition, the available evidence for the utility of stable versus nonstable linkages between peptide and oligonucleotide or PNA is discussed. This article was published in Cell Mol Life Sci and referenced in Journal of Stem Cell Research & Therapy

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