npj Vaccines (Oct 2021)

INO-4800 DNA vaccine induces neutralizing antibodies and T cell activity against global SARS-CoV-2 variants

  • Viviane M. Andrade,
  • Aaron Christensen-Quick,
  • Joseph Agnes,
  • Jared Tur,
  • Charles Reed,
  • Richa Kalia,
  • Idania Marrero,
  • Dustin Elwood,
  • Katherine Schultheis,
  • Mansi Purwar,
  • Emma Reuschel,
  • Trevor McMullan,
  • Patrick Pezzoli,
  • Kim Kraynyak,
  • Albert Sylvester,
  • Mammen P. Mammen,
  • Pablo Tebas,
  • J. Joseph Kim,
  • David B. Weiner,
  • Trevor R. F. Smith,
  • Stephanie J. Ramos,
  • Laurent M. Humeau,
  • Jean D. Boyer,
  • Kate E. Broderick

DOI
https://doi.org/10.1038/s41541-021-00384-7
Journal volume & issue
Vol. 6, no. 1
pp. 1 – 4

Abstract

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Abstract Global surveillance has identified emerging SARS-CoV-2 variants of concern (VOC) associated with broadened host specificity, pathogenicity, and immune evasion to vaccine-induced immunity. Here we compared humoral and cellular responses against SARS-CoV-2 VOC in subjects immunized with the DNA vaccine, INO-4800. INO-4800 vaccination induced neutralizing antibodies against all variants tested, with reduced levels detected against B.1.351. IFNγ T cell responses were fully maintained against all variants tested.