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Mejía-Argueta EL, Santillán Benítez JG, Ortiz-Reynoso M. Antimicrobial peptides, an alternative to combat bacterial resistance. ACTA BIOLÓGICA COLOMBIANA 2020. [DOI: 10.15446/abc.v25n2.77407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Antimicrobial peptides of higher organisms have been studied for the past 25 years, and their importance as components of innate immunity is now well established. The essential simplicity of their chemical structure, along with the lower likelihood of developed resistance compared to conventional antibiotics, has made them attractive candidates for development as therapeutics. The objective of this review article is to describe the current relevance, main mechanisms presented, and the uses of antimicrobial peptides as new therapies in the clinical area. The information used was mainly compiled from scientific articles based on a systematic review of scientific papers with data on human antimicrobial peptides (AMPs) and their different applications, searching without date limits and only documents in English and Spanish. Gray literature was accessed through manual search, and no restrictions were made involving study design for a retrospective study. Although these products have not yet been commercialized, they have advantages over the currently available treatments since they are not expected to cause bacterial resistance due to their three-dimensional structure, amphipathic tendency, and cationic character; however, the technique of peptide production is still new and is in the early stages of innovation of new molecules.
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Campos ML, de Souza CM, de Oliveira KBS, Dias SC, Franco OL. The role of antimicrobial peptides in plant immunity. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:4997-5011. [PMID: 30099553 DOI: 10.1093/jxb/ery294] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 07/31/2018] [Indexed: 05/21/2023]
Abstract
Selective pressure imposed by millions of years of relentless biological attack has led to the development of an extraordinary array of defense strategies in plants. Among these, antimicrobial peptides (AMPs) stand out as one of the most prominent components of the plant immune system. These small and usually basic peptides are deployed as a generalist defense strategy that grants direct and durable resistance against biotic stress. Even though their name implies a function against microbes, the range of plant-associated organisms affected by these peptides is much broader. In this review, we highlight the advances in our understanding on the role of AMPs in plant immunity. We demonstrate that the capacity of plant AMPs to act against a large spectrum of enemies relies on their diverse mechanism of action and remarkable structural stability. The efficacy of AMPs as a defense strategy is evidenced by their widespread occurrence in the plant kingdom, an astonishing heterogeneity in host peptide composition, and the extent to which plant enemies have evolved effective counter-measures to evade AMP action. Plant AMPs are becoming an important topic of research due to their significance in allowing plants to thrive and for their enormous potential in agronomical and pharmaceutical fields.
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Affiliation(s)
- Marcelo Lattarulo Campos
- Centro de Análises Bioquímicas e Proteômicas, Universidade Católica de Brasilia, Brasilia/DF, Brazil
- Departamento de Botânica e Ecologia, Instituto de Biociências, Universidade Federal de Mato Grosso, Cuiabá/MT, Brazil
| | - Camila Maurmann de Souza
- Centro de Análises Bioquímicas e Proteômicas, Universidade Católica de Brasilia, Brasilia/DF, Brazil
| | | | - Simoni Campos Dias
- Centro de Análises Bioquímicas e Proteômicas, Universidade Católica de Brasilia, Brasilia/DF, Brazil
- Universidade de Brasilia, Pós-Graduação em Biologia Animal, Campus Darcy Ribeiro, Brasilia/DF, Brazil
| | - Octávio Luiz Franco
- Centro de Análises Bioquímicas e Proteômicas, Universidade Católica de Brasilia, Brasilia/DF, Brazil
- S-Inova Biotech, Universidade Católica Dom Bosco, Campo Grande/MS, Brazil
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Heydarian Z, Gruber M, Glick BR, Hegedus DD. Gene Expression Patterns in Roots of Camelina sativa With Enhanced Salinity Tolerance Arising From Inoculation of Soil With Plant Growth Promoting Bacteria Producing 1-Aminocyclopropane-1-Carboxylate Deaminase or Expression the Corresponding acdS Gene. Front Microbiol 2018; 9:1297. [PMID: 30013518 PMCID: PMC6036250 DOI: 10.3389/fmicb.2018.01297] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Accepted: 05/28/2018] [Indexed: 12/19/2022] Open
Abstract
Camelina sativa treated with plant growth-promoting bacteria (PGPB) producing 1-aminocyclopropane-1-carboxylate deaminase (acdS) or transgenic lines expressing acdS exhibit increased salinity tolerance. AcdS reduces the level of stress ethylene to below the point where it is inhibitory to plant growth. The study determined that several mechanisms appear to be responsible for the increased salinity tolerance and that the effect of acdS on gene expression patterns in C. sativa roots during salt stress is a function of how it is delivered. Growth in soil treated with the PGPB (Pseudomonas migulae 8R6) mostly affected ethylene- and abscisic acid-dependent signaling in a positive way, while expression of acdS in transgenic lines under the control of the broadly active CaMV 35S promoter or the root-specific rolD promoter affected auxin, jasmonic acid and brassinosteroid signaling and/biosynthesis. The expression of genes involved in minor carbohydrate metabolism were also up-regulated, mainly in roots of lines expressing acdS. Expression of acdS also affected the expression of genes involved in modulating the level of reactive oxygen species (ROS) to prevent cellular damage, while permitting ROS-dependent signal transduction. Though the root is not a photosynthetic tissue, acdS had a positive effect on the expression of genes involved in photosynthesis.
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Affiliation(s)
- Zohreh Heydarian
- Agriculture and Agri-Food Canada, Saskatoon, SK, Canada.,Department of Biotechnology, School of Agriculture, Shiraz University, Shiraz, Iran
| | | | - Bernard R Glick
- Department of Biology, University of Waterloo, Waterloo, ON, Canada
| | - Dwayne D Hegedus
- Agriculture and Agri-Food Canada, Saskatoon, SK, Canada.,Department of Food and Bioproduct Sciences, University of Saskatchewan, Saskatoon, SK, Canada
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Frey ME, D'Ippolito S, Pepe A, Daleo GR, Guevara MG. Transgenic expression of plant-specific insert of potato aspartic proteases (StAP-PSI) confers enhanced resistance to Botrytis cinerea in Arabidopsis thaliana. PHYTOCHEMISTRY 2018; 149:1-11. [PMID: 29428248 DOI: 10.1016/j.phytochem.2018.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 02/01/2018] [Accepted: 02/03/2018] [Indexed: 05/20/2023]
Abstract
The plant-specific insert of Solanum tuberosum aspartic proteases (StAP-PSI) has high structural similarity with NK-lysin and granulysin, two saposin-like proteins (SAPLIPs) with antimicrobial activity. Recombinant StAP-PSI and some SAPLIPs show antimicrobial activity against pathogens that affect human and plants. In this work, we transformed Arabidopsis thaliana plants with StAP-PSI encoding sequence with its corresponding signal peptide under the control of the cauliflower mosaic virus (CaMV) 35S promoter. Results obtained show that StAP-PSI significantly enhances Arabidopsis resistance against Botrytis cinerea infection. StAP-PSI is secreted into the leaf apoplast and acts directly against pathogens; thereby complementing plant innate immune responses. Data obtained from real-time PCR assays show that the constitutive expression of StAP-PSI induces the expression of genes that regulate jasmonic acid signalling pathway, such as PDF1.2, in response to infection due to necrotrophic pathogens. On the other hand, according to the data described for other antimicrobial peptides, the presence of the StAP-PSI protein in the apoplast of A. thaliana leaves is responsible for the expression of salicylic acid-associated genes, such as PR-1, irrespective of infection with B. cinerea. These results indicate that the increased resistance demonstrated by A. thaliana plants that constitutively express StAP-PSI owing to B. cinerea infection compared to the wild-type plants is a consequence of two factors, i.e., the antifungal activity of StAP-PSI and the overexpression of A. thaliana defense genes induced by the constitutive expression of StAP-PSI. We suggest that the use of this protein would help in minimizing the ecological and health risks that arise from the use of pesticides. We suggest that the use of this protein would help in minimizing the ecological and health risks that arise from the spreading of resistance of agriculturally important pathogens.
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Affiliation(s)
- María Eugenia Frey
- Biological Research Institute, National Council of Scientific and Technique Research (CONICET), University of Mar del Plata, Mar del Plata (UNMDP), Argentina
| | - Sebastián D'Ippolito
- Biological Research Institute, National Council of Scientific and Technique Research (CONICET), University of Mar del Plata, Mar del Plata (UNMDP), Argentina
| | - Alfonso Pepe
- Biological Research Institute, National Council of Scientific and Technique Research (CONICET), University of Mar del Plata, Mar del Plata (UNMDP), Argentina
| | - Gustavo Raúl Daleo
- Biological Research Institute, National Council of Scientific and Technique Research (CONICET), University of Mar del Plata, Mar del Plata (UNMDP), Argentina
| | - María Gabriela Guevara
- Biological Research Institute, National Council of Scientific and Technique Research (CONICET), University of Mar del Plata, Mar del Plata (UNMDP), Argentina.
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Cortesi R, Valacchi G, Muresan XM, Drechsler M, Contado C, Esposito E, Grandini A, Guerrini A, Forlani G, Sacchetti G. Nanostructured lipid carriers (NLC) for the delivery of natural molecules with antimicrobial activity: production, characterisation and in vitro studies. J Microencapsul 2017; 34:63-72. [PMID: 28097914 DOI: 10.1080/02652048.2017.1284276] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
This study describes the preparation, characterisation and in vitro activity of nanostructured lipid carriers (NLCs) encapsulating natural molecules with antimicrobial activity, such as plumbagin, hydroquinon, eugenol, alpha-asarone and alpha-tocopherol. NLCs were prepared by melt and ultrasonication method, characterised by Cryo-TEM for morphology and SdFFF for dimensional distribution and active encapsulation yields. In vitro tests were conducted on bacteria, fungi and human cell cultures. In vitro tests demonstrated that plumbagin is strongly toxic towards F. oxysporum especially when active molecules are loaded on NLC. Plumbagin was completely non toxic on cyanobacterial model strain up to a threshold over which cell viability was completely lost. NLC loaded with active molecules showed a lower toxicity as compared to their free form on human cultured cells. Although further studies need to be performed, these systems can be potentially proposed to control phytopathogenic organisms.
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Affiliation(s)
- Rita Cortesi
- a Department of Life Sciences and Biotechnology , University of Ferrara , Ferrara , Italy
| | - Giuseppe Valacchi
- a Department of Life Sciences and Biotechnology , University of Ferrara , Ferrara , Italy.,b Department of Animal Science , NC State University, Plants for Human Health Institute, NC Research Campus , Kannapolis , NC , USA
| | - Ximena Maria Muresan
- a Department of Life Sciences and Biotechnology , University of Ferrara , Ferrara , Italy
| | - Markus Drechsler
- c BIMF/Soft Matter Electronmicroscopy , University of Bayreuth , Bayreuth , Germany
| | - Catia Contado
- d Department of Chemical and Pharmaceutical Sciences , University of Ferrara , Ferrara , Italy
| | - Elisabetta Esposito
- a Department of Life Sciences and Biotechnology , University of Ferrara , Ferrara , Italy
| | - Alessandro Grandini
- a Department of Life Sciences and Biotechnology , University of Ferrara , Ferrara , Italy
| | - Alessandra Guerrini
- a Department of Life Sciences and Biotechnology , University of Ferrara , Ferrara , Italy
| | - Giuseppe Forlani
- a Department of Life Sciences and Biotechnology , University of Ferrara , Ferrara , Italy
| | - Gianni Sacchetti
- a Department of Life Sciences and Biotechnology , University of Ferrara , Ferrara , Italy
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