Phase I trial of two recombinant vaccines containing the 19kd carboxy terminal fragment of Plasmodium falciparum merozoite surface protein 1 (msp-119) and T helper epitopes of tetanus toxoid

  • W. A. Keitel
  • , K. E. Kester
  • , R. L. Atmar
  • , A. C. White
  • , N. H. Bond
  • , C. A. Holland
  • , U. Krzych
  • , D. R. Palmer
  • , A. Egan
  • , C. Diggs
  • , W. R. Ballou
  • , B. F. Hall
  • , D. Kaslow

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

The safety and immunogenicity of 2 yeast-derived, blood-stage malaria vaccines were evaluated in a phase l trial. Healthy adults were given 2 or 3 doses of alum-adsorbed vaccine containing the 19 kDa carboxy-terminal fragment of the merozoite surface protein-1 (MSP-119) derived from the 3D7 or the FVO strain of Plasmodium falciparum fused to tetanus toxoid T-helper epitopes P30 and P2. The first 2 doses of MSP-119 were well tolerated. Hypersensitivity reactions occurred in 3 subjects after the third dose of MSP-119, including bilateral injection site reactions in 2 (one with generalized skin rash), and probable histamine-associated hypotension in 1. Serum antibody responses to MSP-119 occurred in 5/16, 9/16 and 0/8 subjects given 20 μg of MSP-119, 200 μg of MSP-119, and control vaccines (hepatitis B or Td), respectively. Both MSP-119 vaccines were immunogenic in humans, but changes in formulation will be necessary to improve safety and immunogenicity profiles. Copyright (C) 1999 Elsevier Science Ltd.

Original languageEnglish (US)
Pages (from-to)531-539
Number of pages9
JournalVaccine
Volume18
Issue number5-6
DOIs
StatePublished - Oct 14 1999
Externally publishedYes

Keywords

  • Malaria vaccines
  • Merozoite surface protein
  • Plasmodium falciparum

ASJC Scopus subject areas

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

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