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JOURNAL OF MEDICINAL CHEMISTRY
Volume -, Issue -, Pages -Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jmedchem.2c00404
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The approval of the combination therapy PAXLOVID has boosted morale in fighting the COVID-19 pandemic. The analysis in the article discusses possible mutations in the M-Pro that could lead to acquired viral resistance to nirmatrelvir and its implications for fighting future drug-resistant viral variants.
The U.S. FDA approval of PAXLOVID, a combination therapy of nirmatrelvir and ritonavir has significantly boosted our morale in fighting the COVID-19 pandemic. Nirmatrelvir is an inhibitor of the main protease (M-Pro) of SARS-CoV- 2. Since many SARS-CoV-2 variants that resist vaccines and antibodies have emerged, a concern of acquired viral resistance to nirmatrelvir naturally arises. Here, possible mutations in M-Pro to confer viral evasion of nirmatrelvir are analyzed and discussed from both evolutionary and structural standpoints. The analysis indicates that those mutations will likely reside in the whole aa45-51 helical region and residues including M165, L167, P168, R188, and Q189. Relevant mutations have also been observed in existing SARS-CoV-2 samples. Implications of this analysis to the fight against future drug-resistant viral variants and the development of broad-spectrum antivirals are discussed as well.
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