Serotype-independent pneumococcal vaccines

Cell Mol Life Sci. 2013 Sep;70(18):3303-26. doi: 10.1007/s00018-012-1234-8. Epub 2012 Dec 27.

Abstract

Streptococcus pneumoniae remains an important cause of disease with high mortality and morbidity, especially in children and in the elderly. The widespread use of the polysaccharide conjugate vaccines in some countries has led to a significant decrease in invasive disease caused by vaccine serotypes, but an increase in disease caused by non-vaccine serotypes has impacted on the overall efficacy of these vaccines on pneumococcal disease. The obvious solution to overcome such shortcomings would be the development of new formulations that provide serotype-independent immunity. This review focuses on the most promising approaches, including protein antigens, whole cell pneumococcal vaccines, and recombinant bacteria expressing pneumococcal antigens. The protective capacity of these vaccine candidates against the different stages of pneumococcal infection, including colonization, mucosal disease, and invasive disease in animal models is reviewed. Some of the human trials that have already been performed or that are currently ongoing are presented. Finally, the feasibility and the possible shortcomings of these candidates in relation to an ideal vaccine against pneumococcal infections are discussed.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Antigens / immunology
  • Clinical Trials as Topic
  • Disease Models, Animal
  • Humans
  • Meningitis, Bacterial / immunology*
  • Meningitis, Bacterial / microbiology
  • Mice
  • Mucous Membrane / immunology
  • Pneumococcal Infections / immunology*
  • Pneumococcal Infections / microbiology
  • Pneumococcal Infections / prevention & control*
  • Pneumococcal Vaccines / immunology*
  • Pneumococcal Vaccines / therapeutic use*
  • Recombinant Proteins / immunology
  • Serotyping
  • Streptococcus pneumoniae
  • Vaccines, Conjugate / immunology
  • Vaccines, Conjugate / therapeutic use

Substances

  • Antigens
  • Pneumococcal Vaccines
  • Recombinant Proteins
  • Vaccines, Conjugate