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Open AccessJournal ArticleDOI

Single-cell landscape of bronchoalveolar immune cells in patients with COVID-19.

TLDR
Single-cell transcriptome and T cell receptor analysis of bronchoalveolar lavage fluid suggests enrichment of proinflammatory macrophages in patients with severe COVID-19 and the presence of clonally expanded CD8 + T cells in Patients with moderate CO VID-19.
Abstract
Respiratory immune characteristics associated with Coronavirus Disease 2019 (COVID-19) severity are currently unclear. We characterized bronchoalveolar lavage fluid immune cells from patients with varying severity of COVID-19 and from healthy people by using single-cell RNA sequencing. Proinflammatory monocyte-derived macrophages were abundant in the bronchoalveolar lavage fluid from patients with severe COVID-9. Moderate cases were characterized by the presence of highly clonally expanded CD8+ T cells. This atlas of the bronchoalveolar immune microenvironment suggests potential mechanisms underlying pathogenesis and recovery in COVID-19.

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Journal ArticleDOI

Single-cell landscape of immunological responses in patients with COVID-19.

TL;DR: The single-cell transcriptional landscape of moderate, severe and convalescent cases of patients with COVID-19 describes the dynamic nature of immune responses during disease progression, and shows a deranged interferon response, profound immune exhaustion with skewed T cell receptor repertoire and broad T cell expansion.
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The hypercoagulable state in COVID-19: Incidence, pathophysiology, and management.

TL;DR: Of concern, is the observation that anticoagulation may be inadequate in many circumstances, highlighting the need for alternative or additional therapies.
Journal ArticleDOI

COVID-19 and the human innate immune system.

TL;DR: In this article, a conceptual framework for the interaction of the human innate immune system with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was provided to link the clinical observations with experimental findings that have been made during the first year of the pandemic.
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Immunity, endothelial injury and complement-induced coagulopathy in COVID-19.

TL;DR: Current understanding of the pathogenic mechanisms involved in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and the progression of coronav virus disease 2019 (COVID-19) is described, focusing on the immunological hyper-response and the induction of widespread endothelial damage, complement-associated blood clotting and systemic microangiopathy, as well as the effects of these processes on the kidney.
Journal ArticleDOI

Circuits between infected macrophages and T cells in SARS-CoV-2 pneumonia.

TL;DR: In this paper, the authors investigated SARS-CoV-2 pathobiology by characterizing the immune response in the alveoli of patients infected with the virus, and they collected bronchoalveolar lavage fluid samples from 88 patients with severe acute respiratory syndrome coronavirus 2 (SARSCoV2)induced respiratory failure and 211 patients with known or suspected pneumonia from other pathogens, and analyzed them using flow cytometry and bulk transcriptomic profiling.
References
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Journal ArticleDOI

STAR: ultrafast universal RNA-seq aligner

TL;DR: The Spliced Transcripts Alignment to a Reference (STAR) software based on a previously undescribed RNA-seq alignment algorithm that uses sequential maximum mappable seed search in uncompressed suffix arrays followed by seed clustering and stitching procedure outperforms other aligners by a factor of >50 in mapping speed.
Journal ArticleDOI

clusterProfiler: an R Package for Comparing Biological Themes Among Gene Clusters

TL;DR: An R package, clusterProfiler that automates the process of biological-term classification and the enrichment analysis of gene clusters and can be easily extended to other species and ontologies is presented.
Journal ArticleDOI

Comprehensive Integration of Single-Cell Data.

TL;DR: A strategy to "anchor" diverse datasets together, enabling us to integrate single-cell measurements not only across scRNA-seq technologies, but also across different modalities.
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