Oral prodrug of remdesivir parent GS-441524 is efficacious against SARS-CoV-2 in ferrets.

Oral prodrug of remdesivir parent GS-441524 is efficacious against SARS-CoV-2 in ferrets.
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DOI:
10.1038/s41467-021-26760-4
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发表时间:
2021-11-05
影响因子:
16.6
通讯作者:
Plemper RK
Plemper RK
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Cox RM;Wolf JD;Lieber CM;Sourimant J;Lin MJ;Babusis D;DuPont V;Chan J;Barrett KT;Lye D;Kalla R;Chun K;Mackman RL;Ye C;Cihlar T;Martinez-Sobrido L;Greninger AL;Bilello JP;Plemper RK

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Remdesivir is an antiviral approved for COVID-19 treatment, but its wider use is limited by intravenous delivery. An orally bioavailable remdesivir analog may boost therapeutic benefit by facilitating early administration to non-hospitalized patients. This study characterizes the anti-SARS-CoV-2 efficacy of GS-621763, an oral prodrug of remdesivir parent nucleoside GS-441524. Both GS-621763 and GS-441524 inhibit SARS-CoV-2, including variants of concern (VOC) in cell culture and human airway epithelium organoids. Oral GS-621763 is efficiently converted to plasma metabolite GS-441524, and in lungs to the triphosphate metabolite identical to that generated by remdesivir, demonstrating a consistent mechanism of activity. Twice-daily oral administration of 10 mg/kg GS-621763 reduces SARS-CoV-2 burden to near-undetectable levels in ferrets. When dosed therapeutically against VOC P.1 gamma γ, oral GS-621763 blocks virus replication and prevents transmission to untreated contact animals. These results demonstrate therapeutic efficacy of a much-needed orally bioavailable analog of remdesivir in a relevant animal model of SARS-CoV-2 infection. Remdesivir is an approved antiviral treatment for COVID-19, but it needs to be administered intravenously. Here, Cox et al. show that GS-621763, a prodrug of remdesivir parent nucleoside GS-441524 has good oral bioavailability and inhibits SARS-CoV-2 and variants of concerns in ferrets.
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