iScience (Dec 2023)

mRNA COVID-19 vaccine elicits potent adaptive immune response without the acute inflammation of SARS-CoV-2 infection

  • Ellie N. Ivanova,
  • Jasmine Shwetar,
  • Joseph C. Devlin,
  • Terkild B. Buus,
  • Sophie Gray-Gaillard,
  • Akiko Koide,
  • Amber Cornelius,
  • Marie I. Samanovic,
  • Alberto Herrera,
  • Eleni P. Mimitou,
  • Chenzhen Zhang,
  • Trishala Karmacharya,
  • Ludovic Desvignes,
  • Niels Ødum,
  • Peter Smibert,
  • Robert J. Ulrich,
  • Mark J. Mulligan,
  • Shohei Koide,
  • Kelly V. Ruggles,
  • Ramin S. Herati,
  • Sergei B. Koralov

Journal volume & issue
Vol. 26, no. 12
p. 108572

Abstract

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Summary: SARS-CoV-2 infection and vaccination elicit potent immune responses. Our study presents a comprehensive multimodal single-cell analysis of blood from COVID-19 patients and healthy volunteers receiving the SARS-CoV-2 vaccine and booster. We profiled immune responses via transcriptional analysis and lymphocyte repertoire reconstruction. COVID-19 patients displayed an enhanced interferon signature and cytotoxic gene upregulation, absent in vaccine recipients. B and T cell repertoire analysis revealed clonal expansion among effector cells in COVID-19 patients and memory cells in vaccine recipients. Furthermore, while clonal αβ T cell responses were observed in both COVID-19 patients and vaccine recipients, expansion of clonal γδ T cells was found only in infected individuals. Our dataset enables side-by-side comparison of immune responses to infection versus vaccination, including clonal B and T cell responses. Our comparative analysis shows that vaccination induces a robust, durable clonal B and T cell responses, without the severe inflammation associated with infection.

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