DNA immunization: Effect of secretion of DNA-expressed hemagglutinins on antibody responses

Celia A.T. Torres, Kejian Yang, Farah Mustafa, Harriet L. Robinson

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)


DNA vaccines expressing plasma membrane and secreted forms of the influenza and measles virus hemagglutinins (HAs) have been used to evaluate the effect of secretion on DNA-raised antibody responses. At low doses of DNA, the plasma membrane form of the influenza virus HA raised higher titers of antibody than the secreted form. The isotype of the DNA-raised antibodies depended on both the method of DNA delivery and the form of the expressed antigen. Following intramuscular injections, DNAs expressing membrane bound forms of the influenza and measles HAs raised predominantly IgG2a. By contrast, DNAs expressing the secreted from of the two HAs as well as another secreted protein, human growth hormone, raised predominantly IgG1. Gene gun delivery resulted in predominantly IgG1 antibody responses for both secreted and membrane bound forms of the hemagglutinins. The raising of predominantly IgG1 by i.m. delivery of the secreted form of the influenza hemagglutinin was IL-4 dependent suggesting that a T-helper 2-biased immune response had been raised. Copyright (C) 1999 Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)805-814
Number of pages10
Issue number9-10
Publication statusPublished - Dec 10 1999
Externally publishedYes

ASJC Scopus subject areas

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


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