SARS-CoV-2 virus NSP14 Impairs NRF2/HMOX1 activation by targeting Sirtuin 1.

SARS-CoV-2 virus NSP14 Impairs NRF2/HMOX1 activation by targeting Sirtuin 1.
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DOI:
10.1038/s41423-022-00887-w
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发表时间:
2022-08
影响因子:
24.1
通讯作者:
Cheng, Genhong
Cheng, Genhong
中科院分区:
医学1区
文献类型:
--
作者:
Zhang, Shilei;Wang, Jingfeng;Wang, Lulan;Aliyari, Saba;Cheng, Genhong

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COVID-19大流行的大多数死亡是由于急性呼吸窘迫综合征(ARDS)相关的呼吸衰竭。细胞因子风暴和氧化应激是呼吸道病毒感染期间ARDS发展的主要参与者。然而,它仍然是未知的氧化应激是如何调节病毒和宿主因素响应SARS-CoV-2感染。在这里,我们发现NRF 2/HMOX 1的激活通过产生代谢物胆绿素显著抑制SARS-CoV-2在多种细胞类型中的复制,而SARS-CoV-2通过非结构病毒蛋白NSP 14的作用损害NRF 2/HMOX 1轴。在机制上,NSP 14与NAD依赖性脱乙酰酶Sirtuin 1(SIRT 1)的催化结构域相互作用,并抑制其激活NRF 2/HMOX 1途径的能力。此外,遗传学和药学证据都证实了SIRT 1对SARS-CoV-2的新的抗病毒活性。因此,我们的研究结果揭示了SARS-CoV-2失调宿主抗氧化防御系统的新机制,并强调了SIRT 1/NRF 2轴在宿主防御SARS-CoV-2中发挥的重要作用。
Most deaths from the COVID-19 pandemic are due to acute respiratory distress syndrome (ARDS)-related respiratory failure. Cytokine storms and oxidative stress are the major players in ARDS development during respiratory virus infections. However, it is still unknown how oxidative stress is regulated by viral and host factors in response to SARS-CoV-2 infection. Here, we found that activation of NRF2/HMOX1 significantly suppressed SARS-CoV-2 replication in multiple cell types by producing the metabolite biliverdin, whereas SARS-CoV-2 impaired the NRF2/HMOX1 axis through the action of the nonstructural viral protein NSP14. Mechanistically, NSP14 interacts with the catalytic domain of the NAD-dependent deacetylase Sirtuin 1 (SIRT1) and inhibits its ability to activate the NRF2/HMOX1 pathway. Furthermore, both genetic and pharmaceutical evidence corroborated the novel antiviral activity of SIRT1 against SARS-CoV-2. Therefore, our findings reveal a novel mechanism by which SARS-CoV-2 dysregulates the host antioxidant defense system and emphasize the vital role played by the SIRT1/NRF2 axis in host defense against SARS-CoV-2.
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