BACTERIAL MEMBRANE FRACTIONS WITH ADJUVANT EFFECT

摘要

The invention concerns the use of a membrane fraction of gram-negative bacteria, in particular Klebsiella pneumoniae combined with an antigen or hapten for preparing a pharmaceutical composition designed to direct the immune response towards a Th1 and/or a mixed Th1/Th2 type response directed against said antigen or hapten. The invention further concerns methods for preparing said membrane fractions and pharmaceutical compositions containing them and their uses for preventing and treating infectious diseases, in particular those involving paramyxovirus such as VRS, and cancers, in particular those with tumour-associated antigens.