Microbial cell factories, 2024-02, Vol.23 (1), p.40-40, Article 40
2024
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- Autor(en) / Beteiligte
- Titel
- Construction of recombinant Lactococcus expressing thymosin and interferon fusion protein and its application as an immune adjuvant
- Ist Teil von
- Microbial cell factories, 2024-02, Vol.23 (1), p.40-40, Article 40
- Ort / Verlag
- England: BioMed Central Ltd
- Erscheinungsjahr
- 2024
- Quelle
- MEDLINE
- Beschreibungen/Notizen
- In recent years, biosafety and green food safety standards have increased the demand for immune enhancers and adjuvants. In the present study, recombinant food-grade Lactococcus lactis (r-L. lactis-Tα1-IFN) expressing thymosin Tα1 and chicken interferon fusion protein was constructed. The in vitro interactions with macrophages revealed a mixture of recombinant r-L. lactis-Tα1-IFN could significantly activate both macrophage J774-Dual™ NF-κB and interferon regulator (IRF) signaling pathways. In vitro interactions with chicken peripheral blood mononuclear cells (PBMCs) demonstrated that a mixture of recombinant r-L. lactis-Tα1-IFN significantly enhanced the expression levels of interferon (IFN)-γ, interleukin (IL)-10, CD80, and CD86 proteins in chicken PBMCs. Animal experiments displayed that injecting a lysis mixture of recombinant r-L. lactis-Tα1-IFN could significantly activate the proliferation of T cells and antigen-presenting cells in chicken PBMCs. Moreover, 16S analysis of intestinal microbiota demonstrated that injection of the lysis mixture of recombinant r-L. lactis-Tα1-IFN could significantly improve the structure and composition of chicken intestinal microbiota, with a significant increase in probiotic genera, such as Lactobacillus spp. Results of animal experiments using the lysis mixture of recombinant r-L. lactis-Tα1-IFN as an immune adjuvant for inactivated chicken Newcastle disease vaccine showed that the serum antibody titers of the experimental group were significantly higher than those of the vaccine control group, and the expression levels of cytokines IFN-γ and IL-2 were significantly higher than those of the vaccine control group. These results indicate that food-safe recombinant r-L. lactis-Tα1-IFN has potential as a vaccine immune booster and immune adjuvant. This study lays the foundation for the development of natural green novel animal immune booster or immune adjuvant.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1475-2859eISSN: 1475-2859DOI: 10.1186/s12934-024-02308-1Titel-ID: cdi_doaj_primary_oai_doaj_org_article_0f82fb850cf1456eaf88792ab5a13a6a
- Format
- –
- Schlagworte
- Adjuvants, Adjuvants, Immunologic - metabolism, Analysis, Animal experimentation, Animals, Antibodies, Antigen-presenting cells, Antigens, B cells, Bacteria, Biosafety, Biotechnology, CD80 antigen, CD86 antigen, Cell growth, Cell proliferation, Chickens, Cloning, Composition, Control, Cytokines, Cytotoxicity, Enhancers, Food, Food safety, Fusion protein, Genes, Genetic engineering, Genomes, Identification and classification, Immune adjuvant, Immune enhancer, Immune system, Immunity, Interferon, Interferons - metabolism, Interleukins, Intestinal microflora, Intestine, Lactococcus, Lactococcus lactis - metabolism, Lactose, Leukocytes, Mononuclear, Lymphocytes, Lymphocytes T, Lysis, Macrophages, Methods, Microbiota, Microbiota (Symbiotic organisms), Microorganisms, Mixtures, Newcastle disease, NF-κB protein, Peptides, Peripheral blood mononuclear cells, Plasmids, Poultry, Probiotics, Proteins, Recombinant Lactococcus, Recombinant Proteins - metabolism, Safety and security measures, T cells, Thymosin, Thymosin - metabolism, Thymus gland, Vaccines, Vaccines - metabolism, γ-Interferon