[Immune response in BALB/c mice immunized with BCG expressing HBV truncated C gene and preS1 gene]. 2010

Wen Yin, and Xin Lü, and Ying-feng Lei, and Jing Yang, and Meng-ning Sun, and Yu Ma, and Hai-yun Lan, and Ai-qin Wang
Center Laboratory, Fourth Medical Military University, Xi'an 710032, China. yinwen@fmmu.edu.cn

OBJECTIVE To study expressing of HBV truncated core and preS1 protein in BCG and to explore the effect of humoral and cellular immune response stimulated by the recombinant BCG. METHODS A shuttle vector was constructed and was transformed into BCG which including truncated Core gene and preS1 gene of HBV. The recombinant BCGs were analyzed with SDS-PAGE and Western blot. The three groups of BALB/c mice were immunized with saline, BCG, BCG-pDE22 and BCG-pDE22-CS1 respectively. Then the antibody titer and CTL effects were evaluated. RESULTS Compared with the control group, the recombinant BCG could express a new protein band of 24 kD which was consistent with the size of CS1 fused protein which displayed a good antigen-binding property by Western blot analysis. The antibody titer significantly increased and CTL effect apparently enhanced in the recombinant BCG immunized group. CONCLUSIONS BCG could be as live vector which carrying HBV related genes, which developing a novel vaccine against HBV.

UI MeSH Term Description Entries
D007114 Immunization Deliberate stimulation of the host's immune response. ACTIVE IMMUNIZATION involves administration of ANTIGENS or IMMUNOLOGIC ADJUVANTS. PASSIVE IMMUNIZATION involves administration of IMMUNE SERA or LYMPHOCYTES or their extracts (e.g., transfer factor, immune RNA) or transplantation of immunocompetent cell producing tissue (thymus or bone marrow). Immunologic Stimulation,Immunostimulation,Sensitization, Immunologic,Variolation,Immunologic Sensitization,Immunological Stimulation,Sensitization, Immunological,Stimulation, Immunologic,Immunizations,Immunological Sensitization,Immunological Sensitizations,Immunological Stimulations,Sensitizations, Immunological,Stimulation, Immunological,Stimulations, Immunological,Variolations
D008807 Mice, Inbred BALB C An inbred strain of mouse that is widely used in IMMUNOLOGY studies and cancer research. BALB C Mice, Inbred,BALB C Mouse, Inbred,Inbred BALB C Mice,Inbred BALB C Mouse,Mice, BALB C,Mouse, BALB C,Mouse, Inbred BALB C,BALB C Mice,BALB C Mouse
D011498 Protein Precursors Precursors, Protein
D011897 Random Allocation A process involving chance used in therapeutic trials or other research endeavor for allocating experimental subjects, human or animal, between treatment and control groups, or among treatment groups. It may also apply to experiments on inanimate objects. Randomization,Allocation, Random
D011993 Recombinant Fusion Proteins Recombinant proteins produced by the GENETIC TRANSLATION of fused genes formed by the combination of NUCLEIC ACID REGULATORY SEQUENCES of one or more genes with the protein coding sequences of one or more genes. Fusion Proteins, Recombinant,Recombinant Chimeric Protein,Recombinant Fusion Protein,Recombinant Hybrid Protein,Chimeric Proteins, Recombinant,Hybrid Proteins, Recombinant,Recombinant Chimeric Proteins,Recombinant Hybrid Proteins,Chimeric Protein, Recombinant,Fusion Protein, Recombinant,Hybrid Protein, Recombinant,Protein, Recombinant Chimeric,Protein, Recombinant Fusion,Protein, Recombinant Hybrid,Proteins, Recombinant Chimeric,Proteins, Recombinant Fusion,Proteins, Recombinant Hybrid
D005818 Genetic Engineering Directed modification of the gene complement of a living organism by such techniques as altering the DNA, substituting genetic material by means of a virus, transplanting whole nuclei, transplanting cell hybrids, etc. Genetic Intervention,Engineering, Genetic,Intervention, Genetic,Genetic Interventions,Interventions, Genetic
D005822 Genetic Vectors DNA molecules capable of autonomous replication within a host cell and into which other DNA sequences can be inserted and thus amplified. Many are derived from PLASMIDS; BACTERIOPHAGES; or VIRUSES. They are used for transporting foreign genes into recipient cells. Genetic vectors possess a functional replicator site and contain GENETIC MARKERS to facilitate their selective recognition. Cloning Vectors,Shuttle Vectors,Vectors, Genetic,Cloning Vector,Genetic Vector,Shuttle Vector,Vector, Cloning,Vector, Genetic,Vector, Shuttle,Vectors, Cloning,Vectors, Shuttle
D006509 Hepatitis B INFLAMMATION of the LIVER in humans caused by a member of the ORTHOHEPADNAVIRUS genus, HEPATITIS B VIRUS. It is primarily transmitted by parenteral exposure, such as transfusion of contaminated blood or blood products, but can also be transmitted via sexual or intimate personal contact. Hepatitis B Virus Infection
D006510 Hepatitis B Antibodies Antibodies to the HEPATITIS B ANTIGENS, including antibodies to the surface (Australia) and core of the Dane particle and those to the "e" antigens. Anti-Australia Antigens,Anti-HBAg,Anti-Hepatitis B Antigens,Anti HBAg,Hepatitis B Virus Antibodies,Anti Australia Antigens,Anti Hepatitis B Antigens,Antibodies, Hepatitis B,Antigens, Anti-Australia,Antigens, Anti-Hepatitis B,B Antibodies, Hepatitis,B Antigens, Anti-Hepatitis,HBAg, Anti
D006512 Hepatitis B Core Antigens The hepatitis B antigen within the core of the Dane particle, the infectious hepatitis virion. HBcAg,Hepatitis B Core Antigen

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