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Back A, Borges F, Mangavel C, Paris C, Rondags E, Kapel R, Aymes A, Rogniaux H, Pavlović M, van Heel AJ, Kuipers OP, Revol-Junelles AM, Cailliez-Grimal C. Recombinant pediocin in Lactococcus lactis: increased production by propeptide fusion and improved potency by co-production with PedC. Microb Biotechnol 2015; 9:466-77. [PMID: 26147827 PMCID: PMC4919988 DOI: 10.1111/1751-7915.12285] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Revised: 02/18/2015] [Accepted: 03/11/2015] [Indexed: 11/29/2022] Open
Abstract
We describe the impact of two propeptides and PedC on the production yield and the potency of recombinant pediocins produced in Lactococcus lactis. On the one hand, the sequences encoding the propeptides SD or LEISSTCDA were inserted between the sequence encoding the signal peptide of Usp45 and the structural gene of the mature pediocin PA‐1. On the other hand, the putative thiol‐disulfide oxidoreductase PedC was coexpressed with pediocin. The concentration of recombinant pediocins produced in supernatants was determined by enzyme‐linked immunosorbent assay. The potency of recombinant pediocins was investigated by measuring the minimal inhibitory concentration by agar well diffusion assay. The results show that propeptides SD or LEISSTCDA lead to an improved secretion of recombinant pediocins with apparently no effect on the antibacterial potency and that PedC increases the potency of recombinant pediocin. To our knowledge, this study reveals for the first time that pediocin tolerates fusions at the N‐terminal end. Furthermore, it reveals that only expressing the pediocin structural gene in a heterologous host is not sufficient to get an optimal potency and requires the accessory protein PedC. In addition, it can be speculated that PedC catalyses the correct formation of disulfide bonds in pediocin.
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Affiliation(s)
- Alexandre Back
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Frédéric Borges
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Cécile Mangavel
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Cédric Paris
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Emmanuel Rondags
- Laboratoire Réactions et Génie des Procédés (LRGP), CNRS-UMR 7274, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Romain Kapel
- Laboratoire Réactions et Génie des Procédés (LRGP), CNRS-UMR 7274, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Arnaud Aymes
- Laboratoire Réactions et Génie des Procédés (LRGP), CNRS-UMR 7274, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Hélène Rogniaux
- INRA Unité Biopolymères Interactions Assemblages (UR1268), Rue de la Géraudière, Nantes, 44316, France
| | - Marija Pavlović
- INRA Unité Biopolymères Interactions Assemblages (UR1268), Rue de la Géraudière, Nantes, 44316, France
| | - Auke J van Heel
- Department of Molecular Genetics, GBB Institute, University of Gronningen, Nijenborgh 7, 9747AG, Groningen, The Netherlands
| | - Oscar P Kuipers
- Department of Molecular Genetics, GBB Institute, University of Gronningen, Nijenborgh 7, 9747AG, Groningen, The Netherlands
| | - Anne-Marie Revol-Junelles
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
| | - Catherine Cailliez-Grimal
- Laboratoire d'Ingénierie des Biomolécules (LIBio), ENSAIA, Université de Lorraine, 2 Avenue de la Forêt de Haye, Vandœuvre-lès-Nancy, 54518, France
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Reviriego C, Fernández L, Rodríguez JM. A food-grade system for production of pediocin PA-1 in nisin-producing and non-nisin-producing Lactococcus lactis strains: application to inhibit Listeria growth in a cheese model system. J Food Prot 2007; 70:2512-7. [PMID: 18044428 DOI: 10.4315/0362-028x-70.11.2512] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Food-grade heterologous production of pediocin PA-1 in nisin-producing and non-nisin-producing Lactococcus lactis strains, previously selected because of their technological properties for cheese making, was achieved. Plasmid pGA1, which contains the complete pediocin operon under the control of the strong P32 promoter and is devoid of any antibiotic marker, was introduced into L. lactis ESI 153 and L. lactis ESI 515 (Nis+). Transformation of L. lactis ESI 515 with pGA1 did not affect its ability to produce nisin. The antimicrobial activity of the pediocin-producing transformants on the survival of Listeria innocua SA1 during cheese ripening was also investigated. Cheeses were manufactured from milk inoculated with 1% of the lactic culture and with or without approximately 4 log CFU/ml of the Listeria strain. L. lactis ESI 153, L. lactis ESI 515, and their transformants (L. lactis GA1 and GA2, respectively) were used as starter cultures. At the end of the ripening period, counts of L. innocua in cheeses made with the bacteriocin-producing lactococcal strains were below 50 CFU/g in the L. lactis GA1 cheeses and below 25 CFU/g in the L. lactis GA2 ones, compared with 3.7 million CFU/g for the controls without nisin or pediocin production.
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Affiliation(s)
- C Reviriego
- Departamento de Nutrición, Bromatología y Tecnología de los Alimentos, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain
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