Remdesivir triphosphate blocks DNA synthesis and increases exonucleolysis by the replicative mitochondrial DNA polymerase, Pol γ.

Remdesivir triphosphate blocks DNA synthesis and increases exonucleolysis by the replicative mitochondrial DNA polymerase, Pol γ.
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DOI:
10.1016/j.mito.2021.09.010
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发表时间:
2021-11
期刊:
影响因子:
4.4
通讯作者:
Ciesielski GL
Ciesielski GL
中科院分区:
生物学3区
文献类型:
--
作者:
Ciesielska EJ;Kim S;Bisimwa HM;Grier C;Rahman MM;Young CKJ;Young MJ;Oliveira MT;Ciesielski GL

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COVID-19 大流行促使 FDA 授权一种新的核苷类似物瑞德西韦用于受影响个体的紧急使用。我们检查了其活性代谢物瑞德西韦三磷酸 (RTP) 对复制线粒体 DNA 聚合酶 Pol γ 活性的影响。我们发现,虽然 RTP 没有被 Pol γ 整合到新生 DNA 链中,但它仍然与阻碍其合成活性并刺激核酸外切的酶相关。尽管如此,我们没有发现任何证据表明瑞德西韦治疗对培养的人类细胞中线粒体基因组的完整性产生有害影响。
The COVID-19 pandemic prompted the FDA to authorize a new nucleoside analogue, remdesivir, for emergency use in affected individuals. We examined the effects of its active metabolite, remdesivir triphosphate (RTP), on the activity of the replicative mitochondrial DNA polymerase, Pol γ. We found that while RTP is not incorporated by Pol γ into a nascent DNA strand, it remains associated with the enzyme impeding its synthetic activity and stimulating exonucleolysis. In spite of that, we found no evidence for deleterious effects of remdesivir treatment on the integrity of the mitochondrial genome in human cells in culture.
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