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Yu M, Mi T, Lu J, Cui L, Xue Q, Xiong H, Li Y. Construction of rBCG carrying the IL-2-BZLF1 fusion gene and its immunological function. Appl Microbiol Biotechnol 2024; 108:19. [PMID: 38170315 DOI: 10.1007/s00253-023-12851-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/22/2023] [Accepted: 10/03/2023] [Indexed: 01/05/2024]
Abstract
In this research, a recombinant Bacillus Calmette Guerin (rBCG) vector vaccine carrying a human IL-2 and EBV BZLF1 fusion gene (IL-2-BZLF1-rBCG) was constructed. The IL-2-BZLF1-rBCG construct was successfully generated and stably expressed the IL-2 and BZLF1 proteins. IL-2-BZLF1-rBCG activated the immune system and promoted the secretion of IFN-γ and TNF-α by CD4+ and CD8+ T cells. IL-2-BZLF1-rBCG activated lymphocytes to effectively kill EBV-positive NPC cells in vitro. Additionally, IL-2-BZLF1-rBCG stimulated the proliferation of NK cells and lymphocytes in vivo, activated related immune responses, and effectively treated EBV-positive NPC. The immune response to and pharmacological effect of IL-2-BZLF1-rBCG were explored in vitro and in vivo to provide a theoretical and experimental basis for the prevention and treatment of EBV-positive tumors with an rBCG vector vaccine. KEY POINTS: • rBCG with human IL-2 and BZLF1 of EB virus was constructed • The IL-2-BZLF1 fusion gene was stably expressed with rBCG • rBCG with IL-2-BZLF1 has an obvious immune response in vitro and in vivo.
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Affiliation(s)
- Meimei Yu
- School of Basic Medical, Jining Medical University, Jining, 272067, Shandong, China
- Laboratory Department, Qingdao Geriatric Hospital, Qingdao, 266002, Shandong, China
| | - Tian Mi
- School of Basic Medical, Jining Medical University, Jining, 272067, Shandong, China
| | - Jiaqi Lu
- School of Basic Medical, Jining Medical University, Jining, 272067, Shandong, China
| | - Lixian Cui
- School of Basic Medical, Jining Medical University, Jining, 272067, Shandong, China
| | - Qingjie Xue
- School of Basic Medical, Jining Medical University, Jining, 272067, Shandong, China.
| | - Huabao Xiong
- School of Basic Medical, Jining Medical University, Jining, 272067, Shandong, China.
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA.
| | - Yinlong Li
- School of Public Health, Jining Medical University, Jining, 272067, China.
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Chen J, Gao L, Wu X, Fan Y, Liu M, Peng L, Song J, Li B, Liu A, Bao F. BCG-induced trained immunity: history, mechanisms and potential applications. J Transl Med 2023; 21:106. [PMID: 36765373 PMCID: PMC9913021 DOI: 10.1186/s12967-023-03944-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 01/31/2023] [Indexed: 02/12/2023] Open
Abstract
The Bacillus Calmette-Guérin (BCG) vaccine was discovered a century ago and has since been clinically applicable. BCG can not only be used for the prevention of tuberculosis, but also has a non-specific protective effect on the human body called trained immunity that is mediated by innate immune cells such as monocytes, macrophages, and natural killer cells. Mechanisms of trained immunity include epigenetic reprogramming, metabolic reprogramming, and long-term protection mediated by hematopoietic stem cells. Trained immunity has so far shown beneficial effects on cancer, viral-infections, autoimmune diseases, and a variety of other diseases, especially bladder cancer, respiratory viruses, and type 1 diabetes. The modulation of the immune response by BCG has led to the development of a variety of recombinant vaccines. Although the specific mechanism of BCG prevention on diseases has not been fully clarified, the potential role of BCG deserves further exploration, which is of great significance for prevention and treatment of diseases.
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Affiliation(s)
- Jingjing Chen
- grid.285847.40000 0000 9588 0960The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500 Yunnan China ,grid.285847.40000 0000 9588 0960Department of Biochemistry and Molecular Biology, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Li Gao
- grid.285847.40000 0000 9588 0960The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500 Yunnan China ,grid.285847.40000 0000 9588 0960Department of Biochemistry and Molecular Biology, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Xinya Wu
- grid.285847.40000 0000 9588 0960The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500 Yunnan China ,grid.285847.40000 0000 9588 0960Department of Microbiology and Immunology, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Yuxin Fan
- grid.285847.40000 0000 9588 0960The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500 Yunnan China ,grid.285847.40000 0000 9588 0960Department of Microbiology and Immunology, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Meixiao Liu
- grid.285847.40000 0000 9588 0960The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500 Yunnan China ,grid.285847.40000 0000 9588 0960Department of Microbiology and Immunology, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Li Peng
- grid.285847.40000 0000 9588 0960The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500 Yunnan China ,grid.285847.40000 0000 9588 0960Department of Biochemistry and Molecular Biology, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Jieqin Song
- grid.285847.40000 0000 9588 0960The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500 Yunnan China ,grid.285847.40000 0000 9588 0960Department of Microbiology and Immunology, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Bingxue Li
- grid.285847.40000 0000 9588 0960The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500 Yunnan China ,grid.285847.40000 0000 9588 0960Department of Microbiology and Immunology, Kunming Medical University, Kunming, 650500 Yunnan China
| | - Aihua Liu
- The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500, Yunnan, China. .,Yunnan Health Cell Biotechnology Company, Kunming, 650041, Yunnan, China. .,Department of Biochemistry and Molecular Biology, Kunming Medical University, Kunming, 650500, Yunnan, China.
| | - Fukai Bao
- The Institute for Tropical Medicine, Kunming Medical University, Kunming, 650500, Yunnan, China. .,Yunnan Health Cell Biotechnology Company, Kunming, 650041, Yunnan, China. .,Department of Microbiology and Immunology, Kunming Medical University, Kunming, 650500, Yunnan, China.
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