Efferocytosis of SARS-CoV-2-infected dying cells impairs macrophage anti-inflammatory functions and clearance of apoptotic cells
COVID-19 is a disease of dysfunctional immune responses, but the mechanisms triggering immunopathogenesis are not established. The functional plasticity of macrophages allows this cell type to promote pathogen elimination and inflammation or suppress inflammation and promote tissue remodeling and injury repair. During an infection, the clearance of dead and dying cells, a process named efferocytosis, can modulate the interplay between these contrasting functions. Here, we show that engulfment of SARS-CoV-2-infected apoptotic cells exacerbates inflammatory cytokine production, inhibits the expression of efferocytic receptors, and impairs continual efferocytosis by macrophages. We also provide evidence supporting that lung monocytes and macrophages from severe COVID-19 patients have compromised efferocytic capacity. Our findings reveal that dysfunctional efferocytosis of SARS-CoV-2-infected cell corpses suppresses macrophage anti-inflammation and efficient tissue repair programs and provides mechanistic insights for the excessive production of pro-inflammatory cytokines and accumulation of tissue damage associated with COVID-19 immunopathogenesis.
Authors
Salina, Ana CG; Dos-Santos, Douglas; Rodrigues, Tamara S; Fortes-Rocha, Marlon; Freitas-Filho, Edismauro G; Alzamora-Terrel, Daniel L; Castro, Icaro MS; da Silva, Thais FC Fraga; de Lima, Mikhael HF; Nascimento, Daniele C;
External link
Publication Year
Publication Journal
Associeted Project
Systems Immunology of Human Diseases
Lista de serviços
-
Genomic analyses reveal broad impact of miR-137 on genes associated with malignant transformation and neuronal differentiation in glioblastoma cells.Genomic analyses reveal broad impact of miR-137 on genes associated with malignant transformation and neuronal differentiation in glioblastoma cells.
-
RNA-Binding Protein Musashi1 Is a Central Regulator of Adhesion Pathways in Glioblastoma.RNA-Binding Protein Musashi1 Is a Central Regulator of Adhesion Pathways in Glioblastoma.
-
MicroRNA Transcriptome Profiling in Heart of Trypanosoma cruzi-Infected Mice: Parasitological and Cardiological Outcomes.MicroRNA Transcriptome Profiling in Heart of Trypanosoma cruzi-Infected Mice: Parasitological and Cardiological Outcomes.
-
Genome mapping and expression analyses of human intronic noncoding RNAs reveal tissue-specific patterns and enrichment in genes related to regulation of transcription.Genome mapping and expression analyses of human intronic noncoding RNAs reveal tissue-specific patterns and enrichment in genes related to regulation of transcription.
-
Antimicrobial peptide LL-37 participates in the transcriptional regulation of melanoma cells.Antimicrobial peptide LL-37 participates in the transcriptional regulation of melanoma cells.
-
Down-regulation of 14q32-encoded miRNAs and tumor suppressor role for miR-654-3p in papillary thyroid cancer.Down-regulation of 14q32-encoded miRNAs and tumor suppressor role for miR-654-3p in papillary thyroid cancer.
-
Integration of miRNA and gene expression profiles suggest a role for miRNAs in the pathobiological processes of acute Trypanosoma cruzi infection.Integration of miRNA and gene expression profiles suggest a role for miRNAs in the pathobiological processes of acute Trypanosoma cruzi infection.
-
Integrative Biology Approaches Applied to Human DiseasesIntegrative Biology Approaches Applied to Human Diseases
-
Proteomics reveals disturbances in the immune response and energy metabolism of monocytes from patients with septic shock.Proteomics reveals disturbances in the immune response and energy metabolism of monocytes from patients with septic shock.
-
Genomics, epigenomics and pharmacogenomics of Familial Hypercholesterolemia (FHBGEP): A study protocol.Genomics, epigenomics and pharmacogenomics of Familial Hypercholesterolemia (FHBGEP): A study protocol.
-
Melatonin-Index as a biomarker for predicting the distribution of presymptomatic and asymptomatic SARS-CoV-2 carriersMelatonin-Index as a biomarker for predicting the distribution of presymptomatic and asymptomatic SARS-CoV-2 carriers
-
Profiling plasma-extracellular vesicle proteins and microRNAs in diabetes onset in middle-aged male participants in the ELSA-Brasil study.Profiling plasma-extracellular vesicle proteins and microRNAs in diabetes onset in middle-aged male participants in the ELSA-Brasil study.
-
Big Data and machine learning in cancer theranosticsBig Data and machine learning in cancer theranostics
-
Genomic positional conservation identifies topological anchor point RNAs linked to developmental loci.Genomic positional conservation identifies topological anchor point RNAs linked to developmental loci.
-
Integrative systems immunology uncovers molecular networks of the cell cycle that stratify COVID-19 severityIntegrative systems immunology uncovers molecular networks of the cell cycle that stratify COVID-19 severity