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• W4386324373 abstract "Abstract The recent COVID-19 pandemic shows the critical need for novel broad spectrum antiviral agents. Scorpion venoms are known to contain highly bioactive peptides, several of which have demonstrated strong antiviral activity against a range of viruses. We have generated the first annotated reference transcriptome for the Androctonus amoreuxi venom gland and used high performance liquid chromatography, transcriptome mining, circular dichroism and mass spectrometric analysis to purify and characterize fourteen new venom peptides. Selected peptides were tested for binding to the receptor-binding domain (RBD) of the SARS-CoV-2 spike protein and inhibition of the spike RBD – human angiotensin-converting enzyme 2 (hACE2) interaction using surface plasmon resonance-based assays. Seven peptides showed dose-dependent inhibitory effects. The most active peptide was synthesized using solid phase peptide synthesis and tested for its antiviral activity against SARS-CoV-2 (Lineage B.1.1.7). On exposure of replication-competent SARS-CoV-2 to the synthetic peptide, we observed a two log10 PFU/mL reduction at sub-micromolar concentrations of the peptide compared to virus exposed to medium alone. Our results show that scorpion venom peptides can inhibit the SARS-CoV-2 spike RBD – hACE2 interaction, exhibit anti-SARS-CoV-2 activity through other unexplored modes of 3 actions and represent excellent scaffolds for design of novel anti-SARS-CoV-2 constrained peptides." @default.
• W4386324373 created "2023-09-01" @default.
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• W4386324373 date "2023-08-31" @default.
• W4386324373 modified "2023-09-26" @default.
• W4386324373 title "Venomous gland transcriptome and venom proteomic analysis of the scorpion Androctonus amoreuxi reveal new peptides with anti-SARS-CoV2 activity." @default.
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• W4386324373 doi "https://doi.org/10.21203/rs.3.rs-2706268/v2" @default.
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