Send to:

Choose Destination
See comment in PubMed Commons below
J Infect Dis. 2006 Jun 15;193(12):1666-76. Epub 2006 May 10.

Immunization with a tetraepitopic lipid core peptide vaccine construct induces broadly protective immune responses against group A streptococcus.

Author information

  • 1Cooperative Research Centre for Vaccine Technology, Queensland Institute of Medical Research, Brisbane, Australia.



The development of a vaccine to prevent infection with group A streptococcus (GAS) is hampered by the widespread diversity of circulating GAS strains and M protein types, and it is widely believed that a multivalent vaccine would provide better protective immunity.


We investigated the efficacy of incorporating 3 M protein serotypic amino-terminal epitopes from GAS isolates that are common in Australian Aboriginal communities and a conformational epitope from the conserved carboxy-terminal C-repeat region into a single synthetic lipid core peptide (LCP) vaccine construct in inducing broadly protective immune responses against GAS after parenteral delivery to mice.


Immunization with the tetraepitopic LCP vaccine construct led to high titers of systemic, antigen-specific IgG responses and the induction of broadly protective immune responses, as was demonstrated by the ability of immune serum to opsonize multiple GAS strains. Systemic challenge of mice with a lethal dose of GAS given 60 or 300 days after primary immunization showed that, compared with the control mice, the vaccinated mice were significantly protected against GAS infection, demonstrating that the vaccination stimulated long-lasting protective immunity.


These data support the efficacy of the LCP vaccine delivery system in the development of a synthetic, multiepitopic vaccine for the prevention of GAS infection.

[PubMed - indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Write to the Help Desk