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Development of Multiplex Real-Time RT-qPCR Assays for the Detection of SARS-CoV-2, Influenza A/B, and MERS-CoV
Published on: November 10, 2023
Intranasal drop of multiplex RNA therapy for SARS-CoV-2 infections: baicalein-enhanced FEN1 nuclease cleaving as a
Jiyanuo Cao1, Meng Wan1, Jiayu Gu1
1School of Basic Medical Sciences and Clinical Pharmacy, China Pharmaceutical University, Nanjing, People's Republic of China.
Abstract:
Although the acute phase of the SARS-CoV-2 pandemic has subsided, viral persistence and variant evolution continue to challenge existing antiviral strategies. Here, we investigated an intranasal nanomedicine formulation comprising flap-endonuclease 1 (FEN1) and a panel of hairpin-structured DNA probes (hpDNAs), which we designed to concurrently target the highly conserved nucleocapsid RNA and host-derived Cathepsin L mRNA. This dual-targeting approach aims to interfere with both viral genetic integrity and the host-dependent entry pathway. Replacing conventional siRNA/sgRNA with stable, economical hpDNAs may improve the practicality of nucleic acid-based antivirals. Additionally, the co-administration of the anti-inflammatory agent baicalein was examined to assess its potential to improve the nanomedicine's cellular biodistribution. Our portable intranasal drop, a multi-target treatment co-administered with baicalein, elicited a partial reduction in the viral load in mice infected with SARS-CoV-2, suggesting that this multi-target strategy may offer an alternative antiviral modality for further development.
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