2020
DOI: 10.1101/2020.06.11.147389
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Whole blood immunophenotyping uncovers immature neutrophil-to-VD2 T-cell ratio as an early prognostic marker for severe COVID-19

Abstract: 39SARS-CoV-2 is the novel coronavirus responsible for the current COVID-19 40 pandemic. Severe complications are observed only in a small proportion of infected 41 patients but the cellular mechanisms underlying this progression are still unknown. 42Comprehensive flow cytometry of whole blood samples from 54 COVID-19 patients 43 revealed a dramatic increase in the number of immature neutrophils. This increase 44 strongly correlated with disease severity and was associated with elevated IL-6 and 45 IP-10 levels… Show more

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Cited by 11 publications
(12 citation statements)
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References 56 publications
(62 reference statements)
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“…CD169 is a sialoadhesin involved in pathogen uptake, which is quickly induced in a type I IFN dependent manner on the surface of monocytes upon Epstein–Barr virus (EBV) or human immunodeficiency virus (HIV) infection (Rempel et al , 2008; Farina et al , 2017). Consistent with our findings, CD169 has been reported on circulating monocytes in COVID-19 patients (Bedin et al , 2020; Carissimo et al , 2020), while type I IFNs have been shown to be a hallmark of SARS-CoV-2 infection and an impaired type I IFN response has been linked with severe disease (Hadjadj et al , 2020; Wilk et al , 2020).…”
Section: Discussionsupporting
confidence: 91%
See 1 more Smart Citation
“…CD169 is a sialoadhesin involved in pathogen uptake, which is quickly induced in a type I IFN dependent manner on the surface of monocytes upon Epstein–Barr virus (EBV) or human immunodeficiency virus (HIV) infection (Rempel et al , 2008; Farina et al , 2017). Consistent with our findings, CD169 has been reported on circulating monocytes in COVID-19 patients (Bedin et al , 2020; Carissimo et al , 2020), while type I IFNs have been shown to be a hallmark of SARS-CoV-2 infection and an impaired type I IFN response has been linked with severe disease (Hadjadj et al , 2020; Wilk et al , 2020).…”
Section: Discussionsupporting
confidence: 91%
“…We discovered that the myeloid compartment undergoes profound phenotype changes during a SARS-CoV-2 infection with a decrease in the classical monocyte clusters M1, M2 and M3, a depletion of the intermediate and non-classical monocyte clusters M9 and M8, toward a CD169 + activated monocyte phenotype and a surge of low-density neutrophils early in the disease course. The immature phenotype of the neutrophils is in accordance with data in whole blood (Carissimo et al , 2020).…”
Section: Discussionsupporting
confidence: 88%
“…The immunological changes associated with severe disease are also known, with increased inflammatory proteins, coagulopathy and changes in myeloid cell populations reported (6,7). In particular, severe COVID-19 is characterised by expansion of immature myeloid populations, with loss of HLA-DR expression by monocytes and loss of CD10 expression on neutrophils (8,9). Panlymphopenia is also prominent, with CD4+ T cells particularly affected (10,11).…”
Section: Introductionmentioning
confidence: 99%
“…We also noticed that VCAM1 and CTSE genes were minimally expressed by these blood cells (Figure 3 D and E). T-cells count, which is likely due to its differentiation and activation [47]. Based on this fact, we believe that the low count of FasL-associated CD8+ T cells could result from its activation.…”
Section: Fasl Is Predominantly Expressed By Nk Cells and Cd8+ T Cellsmentioning
confidence: 86%