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Mnyambwa NP, Kim DJ, Ngadaya E, Chun J, Ha SM, Petrucka P, Addo KK, Kazwala RR, Mfinanga SG. Genome sequence of Mycobacterium yongonense RT 955-2015 isolate from a patient misdiagnosed with multidrug-resistant tuberculosis: First clinical detection in Tanzania. Int J Infect Dis 2018; 71:82-88. [DOI: 10.1016/j.ijid.2018.04.796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 04/18/2018] [Accepted: 04/18/2018] [Indexed: 01/29/2023] Open
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Kim BJ, Kim BR, Kook YH, Kim BJ. Development of a Live Recombinant BCG Expressing Human Immunodeficiency Virus Type 1 (HIV-1) Gag Using a pMyong2 Vector System: Potential Use As a Novel HIV-1 Vaccine. Front Immunol 2018; 9:643. [PMID: 29636755 PMCID: PMC5880907 DOI: 10.3389/fimmu.2018.00643] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 03/14/2018] [Indexed: 01/22/2023] Open
Abstract
Even though the rate of new human immunodeficiency virus type 1 (HIV-1) infections is gradually decreasing worldwide, an effective preventive vaccine for HIV-1 is still urgently needed. The recombinant Mycobacterium bovis BCG (rBCG) is promising for the development of an HIV-1 vaccine. Recently, we showed that a recombinant Mycobacterium smegmatis expressing HIV-1 gag in a pMyong2 vector system (rSmeg-pMyong2-p24) increased the efficacy of a vaccine against HIV-1 in mice. Here, we evaluated the potential of an rBCG expressing HIV-1 p24 antigen Gag in pMyong2 (rBCG-pMyong2-p24) in a vaccine application for HIV-1 infection. We found that rBCG-pMyong2-p24 elicited an enhanced HIV-1 p24 Gag expression in rBCG and infected antigen-presenting cells. We also found that compared to rBCG-pAL-p24 in a pAL5000 derived vector system, rBCG-pMyong2-p24 elicited enhanced p24-specific immune responses in vaccinated mice as evidenced by higher levels of HIV-1 Gag-specific CD4 and CD8 T lymphocyte proliferation, gamma interferon ELISPOT cell induction, antibody production, and cytotoxic T lymphocytes (CTL) responses. Furthermore, rBCG-pMyong2-p24 showed a higher level of p24-specific Ab production than rSmeg-pMyong2-p24 in the same pMyong2 vector system. In conclusion, our data indicated that a live recombinant BCG expressing HIV-1 Gag using a pMyong2 vector system, rBCG-pMyong2-p24 elicited an enhanced immune response against HIV-1 infections in a mouse model system. So, rBCG-pMyong2-p24 may have the potential as a prime vaccine in a heterologous prime-boost vaccine strategy for HIV-1 infection.
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Affiliation(s)
- Byoung-Jun Kim
- Department of Microbiology and Immunology, Biomedical Sciences, College of Medicine, Liver Research Institute, Seoul National University, Seoul, South Korea.,Department of Microbiology and Immunology, Biomedical Sciences, College of Medicine, Cancer Research Institute, Seoul National University, Seoul, South Korea
| | - Bo-Ram Kim
- Department of Microbiology and Immunology, Biomedical Sciences, College of Medicine, Liver Research Institute, Seoul National University, Seoul, South Korea.,Department of Microbiology and Immunology, Biomedical Sciences, College of Medicine, Cancer Research Institute, Seoul National University, Seoul, South Korea
| | - Yoon-Hoh Kook
- Department of Microbiology and Immunology, Biomedical Sciences, College of Medicine, Liver Research Institute, Seoul National University, Seoul, South Korea.,Department of Microbiology and Immunology, Biomedical Sciences, College of Medicine, Cancer Research Institute, Seoul National University, Seoul, South Korea
| | - Bum-Joon Kim
- Department of Microbiology and Immunology, Biomedical Sciences, College of Medicine, Liver Research Institute, Seoul National University, Seoul, South Korea.,Department of Microbiology and Immunology, Biomedical Sciences, College of Medicine, Cancer Research Institute, Seoul National University, Seoul, South Korea
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