Cholesterol-GalNAc Dual Conjugation Strategy for Reducing Renal Distribution of Antisense Oligonucleotides.
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Abstract |
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Recently, some studies have reported nephrotoxicity associated with a certain class of antisense oligonucleotides (ASOs) in humans. One possibility for reducing the potential nephrotoxicity of ASOs is to alter their pharmacokinetics. In this study, we investigated the effect of a ligand conjugation strategy on the renal accumulation of ASOs. We selected two ligands, cholesterol and N-acetylgalactosamine (GalNAc), with the purpose of reducing renal distribution and liver targeting, and then designed a series of cholesterol-GalNAc dual conjugated ASOs. The gene-silencing activity of the cholesterol-GalNAc dual conjugated ASO in the liver was slightly lower than that of a GalNAc-conjugated ASO. On the other hand, the renal distribution of the cholesterol-GalNAc dual conjugated ASO was considerably decreased compared with the GalNAc-conjugated ASO, as we expected. As dual conjugation was successful in reducing the renal distribution of ASO, it should be an effective strategy for reducing the nephrotoxic potential of ASOs. |
Year of Publication |
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2018
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Journal |
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Nucleic acid therapeutics
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Date Published |
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2018
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ISSN Number |
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2159-3337
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URL |
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http://www.liebertonline.com/doi/abs/10.1089/nat.2017.0698?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%3dpubmed
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DOI |
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10.1089/nat.2017.0698
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Short Title |
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Nucleic Acid Ther
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