title: [Construction of multivalent DNA vaccine against Schistosoma japonicum].
abstract: OBJECTIVE
  To construct a multivalent DNA vaccine.
  
  
  METHODS
  The multivalent DNA vaccine candidates pBK-Sj26-Sj23, pBK-Sj32-Sj23 were constructed based on the plasmids pBluescript-Sj26, pBluescript-Sj32 and pBluescript-Sj23 with three pairs of specific primers using DNA recombinant technique. In the primers, a synthetic linker sequence encoding a peptide was designed, and the antigen genes Sj26 and Sj23, Sj32 and Sj23 were then ligated. After identification, the quadriceps muscle of mice were immunized with the multivalent antigen genes. Four weeks after immunization, the multivalent antigen genes were present in the muscular tissue of mice by PCR.
  
  
  RESULTS
  The eukaryotic plasmids including multivalent antigens of S. japonicum were constructed successfully, and the plasmids including multivalent antigen gene could be stably existing in the muscle tissue of mice and the multivalent antigens could be expressed in the muscle tissue cells of mice.
  
  
  CONCLUSIONS
  A multivalent S. japonicum DNA vaccine has been established.
authors.affiliation: Department of Parasitology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030.
authors.forename: L Z
authors.initials: LZ
authors.lastname: Li
authors.forename: Y E
authors.initials: YE
authors.lastname: Shi
authors.forename: K
authors.initials: K
authors.lastname: Jiagn
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000947:Antigens, Helminth / Q000235:genetics* / Q000276:immunology; D001483:Base Sequence; D004274:DNA, Recombinant / Q000235:genetics; D015801:Helminth Proteins / Q000235:genetics / Q000276:immunology; D008297:Male; D008565:Membrane Proteins / Q000235:genetics / Q000276:immunology; D051379:Mice; D010957:Plasmids / Q000235:genetics; D012549:Schistosoma japonicum / Q000276:immunology*; D019444:Vaccines, DNA / Q000235:genetics* / Q000276:immunology
chemical_list: D000947:Antigens, Helminth; D004274:DNA, Recombinant; D015801:Helminth Proteins; D008565:Membrane Proteins; D019444:Vaccines, DNA; C072633:Sj23 antigen, Schistosoma japonicum