Heliyon (Dec 2020)

Proteins from SARS-CoV-2 reduce T cell proliferation: A mirror image of sepsis

  • José Avendaño-Ortiz,
  • Roberto Lozano-Rodríguez,
  • Alejandro Martín-Quirós,
  • Charbel Maroun-Eid,
  • Verónica Terrón,
  • Jaime Valentín,
  • Karla Montalbán-Hernández,
  • Fátima Ruiz de la Bastida,
  • Miguel A. García-Garrido,
  • Carolina Cubillos-Zapata,
  • Álvaro del Balzo-Castillo,
  • Luis A. Aguirre,
  • Eduardo López-Collazo

Journal volume & issue
Vol. 6, no. 12
p. e05635

Abstract

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Increased cytokine levels, acute phase reactants and immune checkpoint expression changes have been described in patients with Coronavirus Disease 2019 (COVID-19). Here, we have reported a monocyte polarization towards a low HLA-DR and high PD-L1 expression after long exposure to proteins from SARS-CoV-2. Moreover, CD86 expression was also reduced over SARS-CoV-2 proteins exposure. Additionally, T-cells proliferation was significantly reduced after stimulation with these proteins. Eventually, patients with long-term SARS-CoV-2 infection also exhibited a significant blockade of T-cells proliferation.

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