Abstract
Background:
The development of more effective anti-tuberculosis vaccines would contribute to the control of the global problem of infection with Mycobacterium tuberculosis (MTB). Recently, increasing evidences showed that HIV-Tat protein transduction domain is implicated in promotion of vaccines by inducing cellular immuno-response. However, it is rare known about the role of TAT in vaccines against MTB.
Methods:
In this study, we expressed recombinant protein-fused Ag85B with TAT (TAT-Ag85B) which was used as a vaccine to inoculate mice infected with MTB.
Results:
As s result, both IgG2a in serum and IFN-γ or TNFα produced by spleen cells were all increased significantly in the mice inoculated by TAT-Ag85B. Furthermore, consistently, TAT-Ag85B inoculation significantly reduced MTB loads both in lung and spleen.
Conclusions:
These findings demonstrate that a novel protein vaccine of TAT-Ag85B enhances immune response both in humoral and cellular immunity, and contributes to protective efficacy against MTB.
Keywords:
Ag85B; Mycobacterium tuberculosis; Protective immunity; Protein transduction domain; TAT.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Acyltransferases / administration & dosage
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Acyltransferases / genetics
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Acyltransferases / immunology*
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Animals
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Antibodies, Bacterial / immunology
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Antigens, Bacterial / administration & dosage
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Antigens, Bacterial / genetics
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Antigens, Bacterial / immunology*
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Bacterial Proteins / administration & dosage
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Bacterial Proteins / genetics
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Bacterial Proteins / immunology*
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Disease Models, Animal
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Female
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Humans
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Mice
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Mice, Inbred BALB C
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Mycobacterium tuberculosis / genetics
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Mycobacterium tuberculosis / immunology*
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Tuberculosis / immunology*
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Tuberculosis / microbiology
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Tuberculosis Vaccines / administration & dosage
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Tuberculosis Vaccines / genetics
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Tuberculosis Vaccines / immunology
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tat Gene Products, Human Immunodeficiency Virus / administration & dosage
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tat Gene Products, Human Immunodeficiency Virus / genetics
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tat Gene Products, Human Immunodeficiency Virus / immunology
Substances
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Antibodies, Bacterial
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Antigens, Bacterial
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Bacterial Proteins
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Tuberculosis Vaccines
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tat Gene Products, Human Immunodeficiency Virus
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Acyltransferases
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antigen 85B, Mycobacterium tuberculosis