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Lv N, Wang C, Zhou H, Ma X, Yu X, Ren D. Genome- and Toxicology-Based Safety Assessment of Probiotic Akkermansia muciniphila ONE Isolated from Humans. Foods 2024; 13:1979. [PMID: 38998485 PMCID: PMC11241434 DOI: 10.3390/foods13131979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/15/2024] [Accepted: 06/18/2024] [Indexed: 07/14/2024] Open
Abstract
In this study, the genome of Akkermansia muciniphila ONE (designated AKK ONE) was sequenced, assembled, and analyzed. In addition, the safety of this strain was further evaluated by toxicological studies. The results showed that the AKK ONE genome is contained on a single chromosome with a total length of 2,817,524 bp and an average GC content of 55.48%. In total, 2411, 1131, 1168, 1745, and 1402 genes were annotated to the NR, GO, KEGG, COG, and SwissProt database, respectively. Potential resistance genes, adeF, tetW, ANT(3″)-IIa, and aadA1 were detected. AKK ONE was sensitive to ampicillin, ceftriaxone, cefotaxime, meropenem, tetracycline, and chloramphenicol and resistant to moxifloxacin. No potential virulence-related genes were detected. The PathogenFinder database analysis showed that AKK ONE was a non-potential human pathogen. This strain had good gastroenteric fluid tolerance and a weak ability to colonize the gut. No test item-related adverse effects were observed in the acute and subchronic toxicity test. AKK ONE did not display mutagenic activity either. This strain did not change the hematological and clinical biochemical parameters of mice. The weights of the organs were not affected by AKK ONE treatment. These results support that AKK ONE is safe for use as a probiotic at a dose of 8.28 × 109 CFU/kg bw/day.
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Affiliation(s)
- Na Lv
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (N.L.); (C.W.); (H.Z.)
| | - Caiping Wang
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (N.L.); (C.W.); (H.Z.)
| | - Hongtao Zhou
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (N.L.); (C.W.); (H.Z.)
| | - Xin Ma
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China; (X.M.); (X.Y.)
| | - Xueping Yu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China; (X.M.); (X.Y.)
| | - Dayong Ren
- College of Food Science and Engineering, Jilin Agricultural University, Changchun 130118, China; (N.L.); (C.W.); (H.Z.)
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Zhang X, Zhang R, Wang J, Sui N, Xu G, Yan H, Zhu Y, Xie Z, Jiang S. Construction of Recombinant Lactococcus lactis Strain Expressing VP1 Fusion Protein of Duck Hepatitis A Virus Type 1 and Evaluation of Its Immune Effect. Vaccines (Basel) 2021; 9:vaccines9121479. [PMID: 34960225 PMCID: PMC8709260 DOI: 10.3390/vaccines9121479] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/19/2021] [Accepted: 12/10/2021] [Indexed: 11/26/2022] Open
Abstract
With the continuous development of duck farming and the increasing breeding density, the incidence of duck hepatitis A virus type 1 (DHAV-1) has been on the rise, seriously endangering the development of duck farming. To reduce the use of antibiotics in duck breeding, susceptibility risks and mortality, and avoid virulence recovery and immune failure risk, this study aims to develop a new type of mucosal immune probiotics and make full use of molecular biology techniques, on the level of genetic engineering, to modify Lactococcus lactis (L. lactis). In this study, a secretory recombinant L. lactis named MG1363-VP1 with an enhanced Green Fluorescent Protein (eGFP) and translation enhancer T7g10L was constructed, which could express the VP1-eGFP fusion protein of DHAV-1. The animal experiment in ducklings was performed to detect the immune response and protection effect of oral microecologics by recombinant L. lactis. The results showed that oral L. lactis MG1363-VP1 significantly induced the body’s humoral immune system and mucosal immune system to produce specific anti-VP1 IgG antibodies and mucosal secretory immunoglobulin A (sIgA) for DHAV-1 in ducklings, and cytokines including interleukin-2 (IL-2), interleukin-4 (IL-4), interleukin-10 (IL-10), and interferon gamma (IFN-γ). The mortality rate was monitored simultaneously by the natural infestation in the process of production and breeding; notably, the ducklings vaccinated with L. lactis MG1363-VP1 were effectively protected against the nature infection of DHAV-1. The recombinant L. lactis MG1363-VP1 constructed in this study provides a new means of preventing and controlling DHAV-1 infection in the future.
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Affiliation(s)
- Xiaoting Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Key Laboratory of Animal Microecological Preparations, Taian 271000, China
| | - Ruihua Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Jingyu Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Nana Sui
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Guige Xu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Hui Yan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Yanli Zhu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Zhijing Xie
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
| | - Shijin Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271018, China; (X.Z.); (R.Z.); (J.W.); (N.S.); (G.X.); (H.Y.); (Y.Z.); (Z.X.)
- Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian 271000, China
- Correspondence: ; Tel.: +86-538-8245799
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