Abstract: A Escherichia, Salmonella, Yersinia, Vibrio, Listeria, Shigella, or Pseudomonas bacterium that has the following components: (I) a polynucleotide encoding a heterologous antigenic determinant that induces a CTL response against a tumor cell; (II) a polynucleotide encoding a heterologous protein toxin or toxin subunit; and (III) (a) a polynucleotide encoding a transport system that expresses the products of (I) and (II) on the outer surface of the bacterium or that secretes products of (I) and (II) from the bacterium; and (IV) a polynucleotide that activates the expression of one or more of (I). (II), and/Or (III) in the bacterium wherein polynucleotides (I), (II), (III) and (IV) are different from each other and polynucleotides (I), (II) and (III) encode proteins that are different from each other.

Abstract: The invention relates to a microorganism as a carrier of nucleotide sequences coding for antigens and protein toxins comprising the following components: (I) at least one nucleotide sequence coding for at least one complete or partial antigen of at least one wild-type or mutated protein; and (II) at least one nucleotide sequence coding for at least one protein toxin and/or at least one protein toxin subunit; and (III) a) at least one nucleotide sequence coding for at least one transport system which enables the expression of the expression products of component (I) and component (II) on the outer surface of the microorganism and/or enables the secretion of the expression products of component (I) and component (II); and/or coding for at least one signal sequence which enables the secretion of the expression products of component (I) and component (II); and/or (III) b) optionally, at least one nucleotide sequence coding for at least one protein for lysing the microorganism in the cytosol of mammalian cells and