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- W3037442838 abstract "Abstract Oligonucleotide therapeutics use short interfering RNA (siRNA) or antisense oligonucleotide (ASO) molecules to exploit endogenous systems—neutralizing target RNA to prevent subsequent protein translation. While the potential clinical application is vast, delivery efficiency and extrahepatic targeting is challenging. Bioanalytical assays are important in building understanding of these complex relationships. The literature currently lacks description of robust and sensitive methods to measure siRNA and ASOs in complex biological matrices. Described herein is a non-enzymatic hybridization-based immunoassay that enables quantification of individual siRNA strands (antisense or sense) in serum, urine, bile, and liver and kidney homogenates. Assay utility is also demonstrated in ASOs. The assay improves upon previous works by abolishing enzymatic steps and further incorporating Locked Nucleic Acid (LNA) nucleotide modifications to increase analyte hybridization affinity and improve sensitivity, specificity, and robustness. We report an assay with an ultrasensitive dynamic range of 0.3 to 16,700 pM for siRNA in serum. The assay was submitted to full qualification for accuracy and precision in both serum and tissue matrices and assay performance was assessed with single and mixed analytes. The reliable LNA-hybridization-based approach removes the need for matrix sample extraction, enrichment or amplification steps which may be impeded by more advanced chemical modifications." @default.
- W3037442838 created "2020-07-02" @default.
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- W3037442838 date "2020-06-26" @default.
- W3037442838 modified "2023-10-01" @default.
- W3037442838 title "POE Immunoassay: Plate-based oligonucleotide electro-chemiluminescent immunoassay for the quantification of nucleic acids in biological matrices" @default.
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- W3037442838 doi "https://doi.org/10.1038/s41598-020-66829-6" @default.
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