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Structural Fingerprinting of Antisense Oligonucleotide Therapeutics by Solution NMR Spectroscopy. | LitMetric

Structural Fingerprinting of Antisense Oligonucleotide Therapeutics by Solution NMR Spectroscopy.

Pharm Res

Institute for Bioscience and Biotechnology Research, National Institute of Standards and Technology and the University of Maryland, 9600 Gudelsky Drive, Rockville, Maryland, 20850, USA.

Published: June 2023

AI Article Synopsis

  • Antisense oligonucleotide (ASO) therapeutics are a new type of drug aimed at treating diseases caused by hard-to-target proteins, but impurities in their manufacturing can affect their safety and effectiveness.
  • The study introduces advanced nuclear magnetic resonance (NMR) spectroscopy techniques that can provide detailed structural information about ASOs, helping to ensure their quality.
  • The results indicate that 1D NMR measurements can quickly assess ASO integrity, while 2D NMR techniques can help track structural changes during drug development, potentially applying to various ASO formats beyond just one type.

Article Abstract

Purpose: Antisense oligonucleotide (ASO) therapeutics are an emerging class of biopharmaceuticals to treat and prevent diseases, particularly those involving "undruggable" protein targets. Impurities generated throughout the ASO drug manufacturing and formulation pipeline can be detrimental to drug safety and efficacy. Therefore, analytical techniques are needed to rigorously characterize these molecules for quality assurance purposes.

Methods: We demonstrate 1D and 2D nuclear magnetic resonance (NMR) spectroscopy methods that can generate high-resolution structural "fingerprints" of ASOs.

Results And Conclusions: 1D H and P measurements are shown to provide rapid initial assessment of the ASO integrity. In particular, a well-resolved pair of P signals arising from the 5´-end of the phosphorodiamidate morpholino oligomer (PMO) are sensitive to complex formation and oligomerization state. 2D H-H, H-C, and H- N experiments, although less sensitive, are further shown to enable resonance assignment, which will allow the tracking of structural changes at high-resolution during the drug development and manufacturing processes. We further anticipate that the described NMR approaches will be broadly applicable to fully formulated ASO therapeutics, including modalities other than PMOs.

Download full-text PDF

Source
http://dx.doi.org/10.1007/s11095-022-03403-xDOI Listing

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