The adenosine analog prodrug ATV006 is orally bioavailable and has preclinical efficacy against parental SARS-CoV-2 and variants.

The adenosine analog prodrug ATV006 is orally bioavailable and has preclinical efficacy against parental SARS-CoV-2 and variants.
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DOI:
10.1126/scitranslmed.abm7621
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发表时间:
2022-09-07
影响因子:
17.1
通讯作者:
--
中科院分区:
医学1区
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--
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严重急性呼吸系统综合征冠状病毒2型(SARS-CoV-2)是导致2019年冠状病毒病(COVID-19)大流行的病毒,持续快速演变。由于疫苗接种在预防SARS-CoV-2传播方面的有效性有限,以及关注变体(VOC)的不断出现,迫切需要口服生物可利用且广泛有效的抗病毒药物。先前,我们表明Remdesivir的母体核苷GS-441524具有有效的抗SARS-CoV-2活性。在此,我们报告了GS-441524的5′-羟基部分的酯化显著提高了抗病毒效力。这种5′-羟基-异丁酰基前药ATV 006在大鼠和食蟹猴中表现出良好的口服生物利用度,并在体外和三种小鼠模型中对不同的SARS-CoV-2 VOC表现出有效的抗病毒功效。经口给予SARS-CoV-2 Delta变异体攻击的K18-hACE 2小鼠ATV 006后,可降低病毒载量并减轻肺损伤。这些数据表明,ATV 006代表了一种有前途的SARS-CoV-2口服抗病毒候选药物。ATV 006是一种口服生物可利用的抗病毒药物,在临床前模型中对SARS-CoV-2感染有效。
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus driving the ongoing coronavirus disease 2019 (COVID-19) pandemic, continues to rapidly evolve. Due to the limited efficacy of vaccination in prevention of SARS-CoV-2 transmission and continuous emergence of variants of concern (VOC), orally bioavailable and broadly efficacious antiviral drugs are urgently needed. Previously we showed that the parent nucleoside of remdesivir, GS-441524, possesses potent anti-SARS-CoV-2 activity. Herein, we report that esterification of the 5′-hydroxyl moieties of GS-441524 markedly improved antiviral potency. This 5′-hydroxyl-isobutyryl prodrug, ATV006, demonstrated excellent oral bioavailability in rats and cynomolgus monkeys and exhibited potent antiviral efficacy against different SARS-CoV-2 VOCs in vitro and in three mouse models. Oral administration of ATV006 reduced viral loads and alleviated lung damage when administered prophylactically and therapeutically to K18-hACE2 mice challenged with the Delta variant of SARS-CoV-2. These data indicate that ATV006 represents a promising oral antiviral drug candidate for SARS-CoV-2. ATV006 is an orally bioavailable antiviral with efficacy against SARS-CoV-2 infection in preclinical models.
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