Immune response enhancement with GLS-5310 DNA primary vaccine against SARS-CoV-2 followed by administration of an mRNA vaccine heterologous boost

  • Woo Joo Kim
  • , Christine C. Roberts
  • , Joon Young Song
  • , Jin Gu Yoon
  • , Hye Seong
  • , Hak Jun Hyun
  • , Hyojin Lee
  • , Areum Gil
  • , Yeeun Oh
  • , Ji Eun Park
  • , Ji Eun Lee
  • , Bohyun Jeon
  • , Deborah Kane
  • , Susan Spruill
  • , Sagar B. Kudchodkar
  • , Kar Muthumani
  • , Young K. Park
  • , Ijoo Kwon
  • , Joel N. Maslow*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Heterologous boost regimens are being increasingly considered against SARS-CoV-2. We report results for the 32 of 45 participants in the Phase 1 CoV2-001 clinical trial (Kim et al., Int J Iinfect Dis 2023, 128:112–120) who elected to receive an EUA-approved SARS-CoV-2 mRNA vaccine 6 to 8 months following a two-dose primary vaccination with the GLS-5310 bi-cistronic DNA vaccine given intradermally and followed by application of suction using the GeneDerm device. Receipt of EUA-approved mRNA vaccines after GLS-5310 vaccination was well-tolerated, with no reported adverse events. Immune responses were enhanced such that binding antibody titers, neutralizing antibody titers, and T-cell responses increased 1,187-fold, 110-fold, and 2.9-fold, respectively. This paper is the first description of the immune responses following heterologous vaccination with a DNA primary series and mRNA boost.

Original languageEnglish
Pages (from-to)4206-4211
Number of pages6
JournalVaccine
Volume41
Issue number29
DOIs
Publication statusPublished - 2023 Jun 29

Bibliographical note

Publisher Copyright:
© 2023 The Author(s)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

ASJC Scopus subject areas

  • Molecular Medicine
  • General Immunology and Microbiology
  • General Veterinary
  • Public Health, Environmental and Occupational Health
  • Infectious Diseases

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