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

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

PROVIDER: PRJNA814291 | ENA |

REPOSITORIES: ENA

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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.

2022-04-01 | GSE198256 | GEO

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

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Functional reprogramming of monocytes in acute and convalescent severe COVID-19 patients

Project description:Functional reprogramming of monocytes in acute and convalescent severe COVID-19 patients

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Temporal dynamics of the host molecular responses underlying severe COVID-19 progression and disease resolution

Project description:Manuscript describes the daily dynamics of transcriptional responses in whole blood, from acute to convalescent phase, in severe and non-severe COVID-19 patients.

2020-12-31 | E-MTAB-9721 | biostudies-arrayexpress

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

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

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Complement activation induces excessive T cell cytotoxicity in severe COVID-19

Project description:We performed single cell transcriptomics in 13 acute and convalescent mild versus severe COVID-19 subjects, in healthy controls and in sujects with flu-like-illness and HBV infection to assess COVID-19-specific T cell populations und function.

2021-06-08 | GSE175450 | GEO

Linear epitope-specific IgG responses to SARS-CoV-2 and related human coronaviruses in human COVID-19 convalescent sera

Project description:The on-going COVID-19 pandemic requires a deeper understanding of the long-term antibody responses that persist following SARS-CoV-2 infection. To that end, we determined epitope-specific IgG antibody responses in COVID-19 convalescent sera collected at 5 months post-diagnosis and compared that to sera from naïve individuals. Each serum sample was reacted with a high-density peptide microarray representing the complete proteome of SARS-CoV-2 as 15 mer peptides with 11 amino acid overlap and homologs of spike glycoprotein, nucleoprotein, membrane protein, and envelope small membrane protein from related human coronaviruses. Binding signatures were compared between COVID-19 convalescent patients and naïve individuals using the web service tool EPIphany.

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Immunophenotyping of COVID-19 and Influenza Underscores the Association of Type I IFN Response in Severe COVID-19

Project description:Although most SARS-CoV-2-infected individuals experience mild COVID-19, some patients suffer from severe COVID-19, which is accompanied by acute respiratory distress syndrome and systemic inflammation. To identify factors driving severe progression of COVID-19, we performed single-cell RNA-seq using peripheral blood mononuclear cells (PBMCs) obtained from healthy donors, patients with mild or severe COVID-19, and patients with severe influenza. Patients with COVID-19 exhibited hyper-inflammatory signatures across all types of cells among PBMCs, particularly upregulation of the TNF/IL-1beta-driven inflammatory response as compared to severe influenza. In classical monocytes from patients with severe COVID-19, type I IFN response co-existed with the TNF/IL-1beta-driven inflammation, and this was not seen in patients with milder COVID-19 infection. Based on this, we propose that the type I IFN response exacerbates inflammation in patients with severe COVID-19 infection.

2020-07-06 | GSE149689 | GEO

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Unique molecular signatures sustained in circulating monocytes and regulatory T cells inconvalescent COVID-19 patients

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