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Functional reprogramming of monocytes in acute and convalescent severe COVID-19 patients [RNA-seq]

ABSTRACT: Functional reprogramming of monocytes in acute and convalescent severe COVID-19 patients [RNA-seq]

PROVIDER: PRJNA814290 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR18280823_1.fastq.gz	Fastqsanger.gz
	SRR18280823_2.fastq.gz	Fastqsanger.gz
	SRR18280824_1.fastq.gz	Fastqsanger.gz
	SRR18280824_2.fastq.gz	Fastqsanger.gz
	SRR18280825_1.fastq.gz	Fastqsanger.gz

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Functional reprogramming of monocytes in acute and convalescent severe COVID-19 patients [RNA-seq]

Project description:Severe COVID-19 disease is associated with dysregulation of the myeloid compartment during acute infection. Survivors frequently experience long-lasting sequelae but little is known about the eventual persistence of this immune alteration. Herein, we evaluated Toll-like receptor-induced cytokine responses in a cohort of mild to critical patients during acute or convalescent phases (n=97). In the acute phase, we observed impaired cytokine production by monocytes in the most severe patients. This capacity was globally restored in convalescent patients. Yet, we observed increased responsiveness to TLR1/2 ligation in patients that recovered from severe disease, indicating that these cells display distinct functional properties at the different stages of the disease. We identified a specific transcriptomic and epigenomic state in monocytes from acute severe patients that can account for their functional refractoriness. The molecular profile of monocytes from recovering patients was distinct and characterized by increased chromatin accessibility at AP-1 and MAF loci. These results demonstrate that severe COVID-19 infection has a profound impact on the differentiation status and function of circulating monocytes both during the acute and the convalescent phases in a completely distinct manner. This could have important implications for our understanding of short and long-term COVID19-related morbidity.

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