Abstract: The invention is relates to drugs on the basis of antibodies against non-cellular bone matrix proteins, especially BSP, for use in the prevention and treatment of bone metastases. According to the invention, the antibodies are induced in the patient by recombinantly expressing antigenic determinants of bone matrix proteins in Listeria and anchoring them on the surfaces thereof. The antigenic determinants are selected according to whether they are characteristic of antigens that are expressed by the tumor cells themselves.

Abstract: The present invention relates to a method for producing carrier microorganisms, in particular bacteria, which, through targeted genetic manipulation, carry epitopes or epitomers, respectively, on their surfaces. Epitomers are antigenically effective epitopes that can be found in the polypeptide chain in multiple identical copies, and which, when expressed on the surface of the bacteria, can be used for immunization with particular success. A further aspect relates to correspondingly produced bacteria and their uses as vaccines, in particular in cancer therapy.

Abstract: The invention is relates to drugs on the basis of antibodies against non-cellular bone matrix proteins, especially BSP, for use in the prevention and treatment of bone metastases. According to the invention, the antibodies are induced in the patient by recombinantly expressing antigenic determinants of bone matrix proteins in Listeria and anchoring them on the surfaces thereof. The antigenic determinants are selected according to whether they are characteristic of antigens that are expressed by the tumor cells themselves.