Protection against murine listeriosis by oral vaccination with recombinant Salmonella expressing hybrid Yersinia type III proteins.
In the present study, we have investigated the possibility to engage the Yersinia outer protein E (YopE) as a carrier molecule for heterologous Ag delivery by the type III secretion system of Salmonella typhimurium. Defined secretion and translocation domains of YopE were fused to the immunodominant T cell Ags listeriolysin O and p60 of Listeria monocytogenes. In vitro experiments showed that S. typhimurium allows secretion and translocation of large hybrid YopE proteins in a type III-dependent fashion. Translocation and cytosolic delivery of these chimeric proteins into host cells, but not secretion into endosomal compartments, led to efficient MHC class I-restricted Ag presentation of listerial nonamer peptides. Mice orally vaccinated with a single dose of attenuated S. typhimurium expressing translocated hybrid YopE proteins revealed high numbers of IFN-gamma-producing cells reactive with listeriolysin O 91-99 or p60 217-225, respectively. This CD8 T cell response protected mice against a challenge with L. monocytogenes. In conclusion, these findings suggest that YopE is a versatile carrier molecule for type III-mediated foreign Ag delivery by Salmonella vaccine strains.
Rüssmann
H
H
Max von Pettenkofer-Institut für Hygiene und Medizinische Mikrobiologie, Ludwig Maximilians Universität München, München, Germany. ruessmann@m3401.mpk.med.uni-muenchen.de
Igwe
E I
EI
Sauer
J
J
Hardt
W D
WD
Bubert
A
A
Geginat
G
G
D000284:Administration, Oral; D000818:Animals; D017951:Antigen Presentation / Q000235:genetics; D000938:Antigen-Presenting Cells / Q000276:immunology / Q000378:metabolism / Q000382:microbiology; D001425:Bacterial Outer Membrane Proteins / Q000096:biosynthesis / Q000235:genetics* / Q000378:metabolism; D001426:Bacterial Proteins / Q000276:immunology; D001427:Bacterial Toxins; D003600:Cytosol / Q000276:immunology / Q000378:metabolism / Q000382:microbiology; D005260:Female; D006360:Heat-Shock Proteins / Q000276:immunology; D006460:Hemolysin Proteins; D015395:Histocompatibility Antigens Class I / Q000276:immunology; D007941:Leukemia P388 / Q000276:immunology / Q000382:microbiology; D008088:Listeriosis / Q000276:immunology / Q000378:metabolism / Q000382:microbiology / Q000517:prevention & control*; D051379:Mice; D008807:Mice, Inbred BALB C; D010641:Phenotype; D011993:Recombinant Fusion Proteins / Q000096:biosynthesis* / Q000138:chemical synthesis / Q000378:metabolism; D022562:Salmonella Vaccines / Q000008:administration & dosage* / Q000235:genetics* / Q000276:immunology; D012486:Salmonella typhimurium / Q000235:genetics / Q000276:immunology* / Q000472:pathogenicity; D014407:Tumor Cells, Cultured; D014614:Vaccines, Synthetic / Q000008:administration & dosage / Q000276:immunology; D015007:Yersinia / Q000235:genetics* / Q000276:immunology*
C078516:60 kDa protein, Listeria monocytogenes; D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D006360:Heat-Shock Proteins; D006460:Hemolysin Proteins; D015395:Histocompatibility Antigens Class I; D011993:Recombinant Fusion Proteins; D022562:Salmonella Vaccines; D014614:Vaccines, Synthetic; C063239:yopE protein, Yersinia; C038705:hlyA protein, Listeria monocytogenes