Critical Care (Jul 2022)

Gasdermin-D activation by SARS-CoV-2 triggers NET and mediate COVID-19 immunopathology

  • Camila Meirelles S. Silva,
  • Carlos Wagner S. Wanderley,
  • Flavio Protasio Veras,
  • Augusto Velozo Gonçalves,
  • Mikhael Haruo Fernandes Lima,
  • Juliana Escher Toller-Kawahisa,
  • Giovanni Freitas Gomes,
  • Daniele Carvalho Nascimento,
  • Valter V. Silva Monteiro,
  • Isadora Marques Paiva,
  • Cícero José Luíz Ramos Almeida,
  • Diego Brito Caetité,
  • Juliana Costa Silva,
  • Maria Isabel Fernandes Lopes,
  • Letícia Pastorelli Bonjorno,
  • Marcela Cavichioli Giannini,
  • Natalia Brasil Amaral,
  • Maíra Nilson Benatti,
  • Rodrigo Carvalho Santana,
  • Luis Eduardo Alves Damasceno,
  • Bruna Manuella Souza Silva,
  • Ayda Henriques Schneider,
  • Icaro Maia Santos Castro,
  • Juan Carlo Santos Silva,
  • Amanda Pereira Vasconcelos,
  • Tiago Tomazini Gonçalves,
  • Sabrina Setembre Batah,
  • Tamara Silva Rodrigues,
  • Victor Ferreira Costa,
  • Marjorie Cornejo Pontelli,
  • Ronaldo B. Martins,
  • Timna Varela Martins,
  • Danillo Lucas Alves Espósito,
  • Guilherme Cesar Martelossi Cebinelli,
  • Benedito Antônio Lopes da Fonseca,
  • Luiz Osório Silveira Leiria,
  • Larissa Dias Cunha,
  • Eurico Arruda,
  • Helder I. Nakaia,
  • Alexandre Todorovic Fabro,
  • Rene D. R. Oliveira,
  • Dario S. Zamboni,
  • Paulo Louzada-Junior,
  • Thiago Mattar Cunha,
  • José Carlos Farias Alves-Filho,
  • Fernando Queiroz Cunha

DOI
https://doi.org/10.1186/s13054-022-04062-5
Journal volume & issue
Vol. 26, no. 1
pp. 1 – 16

Abstract

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Abstract Background The release of neutrophil extracellular traps (NETs) is associated with inflammation, coagulopathy, and organ damage found in severe cases of COVID-19. However, the molecular mechanisms underlying the release of NETs in COVID-19 remain unclear. Objectives We aim to investigate the role of the Gasdermin-D (GSDMD) pathway on NETs release and the development of organ damage during COVID-19. Methods We performed a single-cell transcriptome analysis in public data of bronchoalveolar lavage. Then, we enrolled 63 hospitalized patients with moderate and severe COVID-19. We analyze in blood and lung tissue samples the expression of GSDMD, presence of NETs, and signaling pathways upstreaming. Furthermore, we analyzed the treatment with disulfiram in a mouse model of SARS-CoV-2 infection. Results We found that the SARS-CoV-2 virus directly activates the pore-forming protein GSDMD that triggers NET production and organ damage in COVID-19. Single-cell transcriptome analysis revealed that the expression of GSDMD and inflammasome-related genes were increased in COVID-19 patients. High expression of active GSDMD associated with NETs structures was found in the lung tissue of COVID-19 patients. Furthermore, we showed that activation of GSDMD in neutrophils requires active caspase1/4 and live SARS-CoV-2, which infects neutrophils. In a mouse model of SARS-CoV-2 infection, the treatment with disulfiram inhibited NETs release and reduced organ damage. Conclusion These results demonstrated that GSDMD-dependent NETosis plays a critical role in COVID-19 immunopathology and suggests GSDMD as a novel potential target for improving the COVID-19 therapeutic strategy.

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