SARS-CoV-2 disrupts host epigenetic regulation via histone mimicry.
Nature
; 610(7931): 381-388, 2022 10.
Статья
в английский
| MEDLINE | ID: covidwho-2050416
ABSTRACT
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) emerged at the end of 2019 and caused the devastating global pandemic of coronavirus disease 2019 (COVID-19), in part because of its ability to effectively suppress host cell responses1-3. In rare cases, viral proteins dampen antiviral responses by mimicking critical regions of human histone proteins4-8, particularly those containing post-translational modifications required for transcriptional regulation9-11. Recent work has demonstrated that SARS-CoV-2 markedly disrupts host cell epigenetic regulation12-14. However, how SARS-CoV-2 controls the host cell epigenome and whether it uses histone mimicry to do so remain unclear. Here we show that the SARS-CoV-2 protein encoded by ORF8 (ORF8) functions as a histone mimic of the ARKS motifs in histone H3 to disrupt host cell epigenetic regulation. ORF8 is associated with chromatin, disrupts regulation of critical histone post-translational modifications and promotes chromatin compaction. Deletion of either the ORF8 gene or the histone mimic site attenuates the ability of SARS-CoV-2 to disrupt host cell chromatin, affects the transcriptional response to infection and attenuates viral genome copy number. These findings demonstrate a new function of ORF8 and a mechanism through which SARS-CoV-2 disrupts host cell epigenetic regulation. Further, this work provides a molecular basis for the finding that SARS-CoV-2 lacking ORF8 is associated with decreased severity of COVID-19.
Полный текст:
Имеется в наличии
Коллекция:
Международные базы данных
база данных:
MEDLINE
Основная тема:
Viral Proteins
/
Histones
/
Molecular Mimicry
/
Epigenesis, Genetic
/
Host Microbial Interactions
/
SARS-CoV-2
/
COVID-19
Тип исследования:
Наблюдательное исследование
/
Прогностическое исследование
Пределы темы:
Люди
Язык:
английский
Журнал:
Nature
Год:
2022
Тип:
Статья
Аффилированная страна:
S41586-022-05282-z
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