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Navarro SA, Lanza L, Acuña L, Bellomio A, Chalón MC. Features and applications of Ent35-MccV hybrid bacteriocin: current state and perspectives. Appl Microbiol Biotechnol 2020; 104:6067-6077. [PMID: 32418126 DOI: 10.1007/s00253-020-10650-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/22/2020] [Accepted: 04/26/2020] [Indexed: 11/28/2022]
Abstract
Bacteriocins are peptides of ribosomal synthesis that are active against bacteria related to the producing strain. They have been widely used in the food industry as biopreservatives. The generation of hybrid peptides by combining the genes that encode two different bacteriocins has made it possible to study the mechanisms of action of the bacteriocins that compose them and also develop new peptides with improved biotechnological applications. Hybrid bacteriocins may be obtained in several ways. In our laboratory, by combining enterocin CRL35 and microcin V (Ent35-MccV), we obtained a broad-spectrum peptide that is active against both Gram-positive and Gram-negative bacteria. Ent35-MccV is sensitive to the action of intestinal proteases and is heat resistant, which makes it a good candidate for use as a biopreservative. For this reason, the peptide was tested in skim milk and beef burgers as food models. We also obtained more potent variants of the hybrid by modifying the central amino acid of the hinge region that connects the two bacteriocins. This review also discusses future applications and perspectives regarding the Ent35-MccV and other hybrid peptides.Key Points• Ent35-MccV is a new broad-spectrum bacteriocin.• The mechanism of action of bacteriocins can be studied using hybrid peptides.• Genetic engineering allows obtaining improved bacteriocin derivatives.• Hybrid peptides can be used in the food, pharmaceutical, and veterinary applications.
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Affiliation(s)
- S A Navarro
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj," Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina
| | - L Lanza
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj," Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina
| | - L Acuña
- Instituto de Patología Experimental (IPE, CONICET-UNSa), Universidad Nacional de Salta, Av. Bolivia 5150, Salta, Argentina
| | - A Bellomio
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj," Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina
| | - Miriam C Chalón
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj," Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina.
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Navarro SA, Lanza L, Colombo NSR, de Ullivarri MF, Acuña L, Sosa-Padilla B, Picariello G, Bellomio A, Chalón MC. Obtaining an Ent35-MccV derivative with mutated hinge region that exhibits increased activity against Listeria monocytogenes and Escherichia coli. Appl Microbiol Biotechnol 2019; 103:9607-9618. [PMID: 31713671 DOI: 10.1007/s00253-019-10187-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/23/2019] [Accepted: 10/03/2019] [Indexed: 11/29/2022]
Abstract
The present paper describes the generation of derivatives from the hybrid peptide called Ent35-MccV, active against Gram-positive and Gram-negative bacteria. This peptide has a triple glycine hinge region between enterocin CRL35 and microcin V. In order to obtain variants of Ent35-MccV with greater biotechnological potential, a saturation mutagenesis was carried out in the hinge region. As a result, we obtained a bank of E. coli strains expressing different mutated hybrid bacteriocins in the central position of the hinge region. From all these variants, we found that the one bearing a tyrosine in the central region of the hinge (Ent35-GYG-MccV) is 2-fold more active against E. coli and 4-fold more active against Listeria than the original peptide Ent35-MccV. This derivative was purified and characterized. The development and evaluation of alternative hinges for Ent35-MccV represents a step forward in the bioengineering of antimicrobial peptides. This approach fosters the rational design of peptides with enhanced antimicrobial activity.
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Affiliation(s)
- S A Navarro
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina
| | - L Lanza
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina
| | - N S Ríos Colombo
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina
| | - M Fernandez de Ullivarri
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina
| | - L Acuña
- Instituto de Patología Experimental (IPE-CONICET-UNSa), Universidad Nacional de Salta, Av. Bolivia, 5150, Salta, Argentina
| | - B Sosa-Padilla
- Planta Piloto de Procesos Industriales Microbiológicos (PROIMI-CONICET), Avenida Belgrano y Pasaje Caseros, Tucumán, Argentina
| | - G Picariello
- Istituto di Scienze dell'Alimentazione - Consiglio Nazionale delle Ricerche (CNR), Via Roma, 64 -, 83100, Avellino, Italy
| | - A Bellomio
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina
| | - Miriam C Chalón
- Instituto Superior de Investigaciones Biológicas (INSIBIO, CONICET-UNT) e Instituto de Química Biológica "Dr. Bernabé Bloj", Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Chacabuco 461, San Miguel de Tucumán, T4000ILI, Argentina.
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Valencia O, Sanchez P, Acuña L, Uribe D. Prevalence of cancer in Colombia: What kind of methodologies has been used to obtain prevalence? Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30539-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Szwako A, Acuña L, Rolón C, Glatzle F, Lemkemeyer C, Unger N, Wiebe J. SEROPREVALENCIA DE LEPTOSPIROSIS BOVINA EN EL CHACO CENTRAL, DEPARTAMENTO DE BOQUERON, PARAGUAY. Compend cienc vet 2015. [DOI: 10.18004/compend.cienc.vet.2015.05.01.26-30] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Basterra LA, Acuña L, Casado M, Ramón-Cueto G, López G. Diagnóstico y análisis de estructuras de madera mediante técnicas no destructivas: aplicación a la Plaza Mayor de Chinchón (Madrid). ACTA ACUST UNITED AC 2009. [DOI: 10.3989/ic.09.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Acuña L. Medicine and literature: imagine a third way. J Med Ethics 1999; 25:421. [PMID: 10536773 PMCID: PMC479274 DOI: 10.1136/jme.25.5.421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Abstract
The acquisition of lever pressing by naive rats, in the absence of shaping, was studied as a function of different rates and unsignaled delays of reinforcement. Groups of 3 rats were each exposed to tandem schedules that differed in either the first or the second component. First-component schedules were either continuous reinforcement or random-interval 15, 30, 60 or 120 s; second-component schedules were fixed-time 0, 1, 3, 6, 12, or 24 s. Rate of responding was low under continuous immediate reinforcement and higher under random-interval 15 s. Random interval 30-s and 60-s schedules produced lower rates that were similar to each other. Random-interval 120 s controlled the lowest rate in the immediate-reinforcement condition. Adding a constant 12-s delay to each of the first-component schedule parameters controlled lower response rates that did not vary systematically with reinforcement rate. The continuous and random-interval 60-s schedules of immediate reinforcement controlled higher global and first-component response rates than did the same schedules combined with longer delays, and first-component rates showed some graded effects of delay duration. In addition, the same schedules controlled higher second-component response rates in combination with a 1-s delay than in combination with longer delays. These results were related to those from previous studies on acquisition with delayed reinforcement as well as to those from similar reinforcement procedures used during steady-state responding.
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Affiliation(s)
- C A Bruner
- Facultad de Psicología, Universidad Nacional Autónoma de México, México, D.F., México
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Tapia FJ, Cáceres-Dittmar G, Acuña L, Mosca W. Epidermal Langerhans cells in infectious diseases. Histol Histopathol 1989; 4:499-508. [PMID: 2520482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- F J Tapia
- Instituto de Biomedicina, Caracas, Venezuela
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Baeza J, Ramírez K, Cordero J, Soto S, Acuña L, González E, Arriagada S. [Cardiorespiratory failure: results of resuscitation in a pediatric ICU]. Rev Chil Pediatr 1989; 60:271-5. [PMID: 2485521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Along one year, cardiorespiratory resuscitation was done to 71 patients, aged 3 days to 10 years (median 3.5 month), in a pediatric intensive care unit. Although 39 patients (55%) recovered through first-stage treatment, in 17 the arrest was recurrent and they died in the following 24 hours. Only 12 (16.9%) children definitely survived. No patients requiring reanimation for more than 10 min, survived. Asystole was the most frequent arrhythmia (92%). There were only 4 cases of ventricular fibrillation, all occurred in patients with congenital heart disease, and no one recovered. Survivors have not evidence of neurological deficiencies, and only one died along one year follow up, because of congenital heart disease.
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Saieh C, Acuña L, Maddaleno M, López G, Idalzoaga V. [Plasma renin activity in normal and malnourished children]. Rev Chil Pediatr 1983; 54:158-61. [PMID: 6417735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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