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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

Coronavirus biology and replication: implications for SARS-CoV-2.

TL;DR: The first discoveries that shape the current understanding of SARS-CoV-2 infection throughout the intracellular viral life cycle are summarized and relate that to the knowledge of coronavirus biology.
Journal ArticleDOI

Immunology of COVID-19: Current State of the Science.

Nicolas Vabret, +87 more
- 16 Jun 2020 - 
TL;DR: The current state of knowledge of innate and adaptive immune responses elicited by SARS-CoV-2 infection and the immunological pathways that likely contribute to disease severity and death are summarized.
References
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Journal ArticleDOI

T Cell Responses Are Required for Protection from Clinical Disease and for Virus Clearance in Severe Acute Respiratory Syndrome Coronavirus-Infected Mice

TL;DR: These studies are the first to show that T cells play a crucial role in Sars-CoV clearance and that a suboptimal T cell response contributes to the pathological changes observed in SARS, and provide a new approach to SARS vaccine design.
Journal ArticleDOI

Proliferating SPP1/MERTK-expressing Macrophages in Idiopathic Pulmonary Fibrosis

TL;DR: The data suggest that SPP1hi macrophages contribute importantly to lung fibrosis in IPF, and that therapeutic strategies targeting MERTK and macrophage proliferation may show promise for treatment of this disease.
Journal ArticleDOI

T-cell immunity of SARS-CoV: Implications for vaccine development against MERS-CoV

TL;DR: T-cell immunological studies of SARS-CoV are summarized and the potential cross-reactivity of the SARV-specific immunity against MERS- coV is discussed, which may provide useful recommendations for the development of broad-spectrum vaccines against coronavirus infections.
Journal ArticleDOI

COVID-19 pneumonia: what has CT taught us?

TL;DR: This finding suggests that CT is a sensitive modality with which to detect COVID-19 pneumonia, even in asymptomatic individuals, and could be considered as a screening tool—together with RT-PCR—when a patient has significant travel history or has had close contact with an infected individual.
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