1
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Bermúdez-Puga S, Dias M, Lima Reis I, Freire de Oliveira T, Yokomizo de Almeida SR, Mendes MA, Moore SJ, Almeida JR, Proaño-Bolaños C, Pinheiro de Souza Oliveira R. Microscopic and metabolomics analysis of the anti-Listeria activity of natural and engineered cruzioseptins. Biochimie 2024; 225:168-175. [PMID: 38823620 DOI: 10.1016/j.biochi.2024.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 05/04/2024] [Accepted: 05/29/2024] [Indexed: 06/03/2024]
Abstract
Listeria monocytogenes is a human opportunistic foodborne pathogen that produces life-threatening infections with a high mortality rate. The control of Listeria in the food production environment and effective clinical management of human listeriosis are challenging due to the emergence of antibiotic resistance. Hence we evaluate the in vitro anti-Listeria activity of two synthetic cruzioseptins reproducing their natural sequences CZS-9, and CZS-12, and one engineered sequence based on CZS-1, named [K4K15]CZS-1. The assessment of the in vitro potential of cruzioseptins, highlighted the promising antibacterial effect of [K4K15]CZS-1 in very low concentrations (0.91 μM) and its thermal stability at high-temperature conditions, is compatible with the food industry. Microscopic and metabolomic analyses suggest cruzioseptin induces anti-Listeria bioactivity through membrane disruption and changes in the intracellular metabolome. We also report that [K4K15]CZS-1 is not resistant to peptidases/proteases emphasizing a key advantage for their use as a food preservative. However, there is a need for further structural and functional optimisations for the potential clinical application as an antibiotic. In conclusion, [K4K15]CZS-1 stand out as membrane-active peptides with the ability to induce shifts in the bacteria metabolome and inspire the development of strategies for the prevention of L. monocytogenes emergence and dissemination.
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Affiliation(s)
- Sebastián Bermúdez-Puga
- Microbial Biomolecules Laboratory, Faculty of Pharmaceutical Sciences, University of São Paulo, Rua do Lago 250, São Paulo, 05508-000, SP, Brazil
| | - Meriellen Dias
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo, Rua do Lago 250, São Paulo, 05508-080, SP, Brazil
| | - Iara Lima Reis
- Microbial Biomolecules Laboratory, Faculty of Pharmaceutical Sciences, University of São Paulo, Rua do Lago 250, São Paulo, 05508-000, SP, Brazil
| | - Taciana Freire de Oliveira
- Microbial Biomolecules Laboratory, Faculty of Pharmaceutical Sciences, University of São Paulo, Rua do Lago 250, São Paulo, 05508-000, SP, Brazil
| | | | - Maria Anita Mendes
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo, Rua do Lago 250, São Paulo, 05508-080, SP, Brazil
| | - Simon J Moore
- School of Biological and Behavioural Sciences, Queen Mary University of London, UK
| | - José R Almeida
- Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Km 7 Via Muyuna, Tena, Napo, Ecuador; School of Pharmacy, University of Reading, Reading, RG6 6UB, UK
| | - Carolina Proaño-Bolaños
- Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Km 7 Via Muyuna, Tena, Napo, Ecuador
| | - Ricardo Pinheiro de Souza Oliveira
- Microbial Biomolecules Laboratory, Faculty of Pharmaceutical Sciences, University of São Paulo, Rua do Lago 250, São Paulo, 05508-000, SP, Brazil.
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2
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Kravchenko SV, Domnin PA, Grishin SY, Zakhareva AP, Zakharova AA, Mustaeva LG, Gorbunova EY, Kobyakova MI, Surin AK, Poshvina DV, Fadeev RS, Azev VN, Ostroumova OS, Ermolaeva SA, Galzitskaya OV. Optimizing Antimicrobial Peptide Design: Integration of Cell-Penetrating Peptides, Amyloidogenic Fragments, and Amino Acid Residue Modifications. Int J Mol Sci 2024; 25:6030. [PMID: 38892216 PMCID: PMC11173194 DOI: 10.3390/ijms25116030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2024] [Revised: 05/27/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
The escalating threat of multidrug-resistant pathogens necessitates innovative approaches to combat infectious diseases. In this study, we examined peptides R23FS*, V31KS*, and R44KS*, which were engineered to include an amyloidogenic fragment sourced from the S1 protein of S. aureus, along with one or two cell-penetrating peptide (CPP) components. We assessed the antimicrobial efficacy of these peptides in a liquid medium against various strains of both Gram-positive bacteria, including S. aureus (209P and 129B strains), MRSA (SA 180 and ATCC 43300 strains), and B. cereus (strain IP 5832), and Gram-negative bacteria such as P. aeruginosa (ATCC 28753 and 2943 strains) and E. coli (MG1655 and K12 strains). Peptides R23FS*, V31KS*, and R44KS* exhibited antimicrobial activity comparable to gentamicin and meropenem against all tested bacteria at concentrations ranging from 24 to 48 μM. The peptides showed a stronger antimicrobial effect against B. cereus. Notably, peptide R44KS* displayed high efficacy compared to peptides R23FS* and V31KS*, particularly evident at lower concentrations, resulting in significant inhibition of bacterial growth. Furthermore, modified peptides V31KS* and R44KS* demonstrated enhanced inhibitory effects on bacterial growth across different strains compared to their unmodified counterparts V31KS and R44KS. These results highlight the potential of integrating cell-penetrating peptides, amyloidogenic fragments, and amino acid residue modifications to advance the innovation in the field of antimicrobial peptides, thereby increasing their effectiveness against a broad spectrum of pathogens.
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Affiliation(s)
- Sergey V. Kravchenko
- Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia; (S.V.K.); (A.P.Z.); (D.V.P.)
| | - Pavel A. Domnin
- Biology Faculty, Lomonosov Moscow State University, 119991 Moscow, Russia;
- Gamaleya Research Centre of Epidemiology and Microbiology, 123098 Moscow, Russia;
| | - Sergei Y. Grishin
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (S.Y.G.); (A.K.S.)
| | - Alena P. Zakhareva
- Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia; (S.V.K.); (A.P.Z.); (D.V.P.)
| | - Anastasiia A. Zakharova
- Institute of Cytology of the Russian Academy of Sciences, Tikhoretsky Ave. 4, 194064 St. Petersburg, Russia; (A.A.Z.); (O.S.O.)
| | - Leila G. Mustaeva
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.M.); (E.Y.G.); (V.N.A.)
| | - Elena Y. Gorbunova
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.M.); (E.Y.G.); (V.N.A.)
| | - Margarita I. Kobyakova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (M.I.K.); (R.S.F.)
- Research Institute of Clinical and Experimental Lymphology—Branch of the Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630060 Novosibirsk, Russia
| | - Alexey K. Surin
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (S.Y.G.); (A.K.S.)
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.M.); (E.Y.G.); (V.N.A.)
- State Research Center for Applied Microbiology and Biotechnology, 142279 Obolensk, Russia
| | - Darya V. Poshvina
- Institute of Environmental and Agricultural Biology (X-BIO), Tyumen State University, 625003 Tyumen, Russia; (S.V.K.); (A.P.Z.); (D.V.P.)
| | - Roman S. Fadeev
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (M.I.K.); (R.S.F.)
| | - Viacheslav N. Azev
- The Branch of the Institute of Bioorganic Chemistry, Russian Academy of Sciences, 142290 Pushchino, Russia; (L.G.M.); (E.Y.G.); (V.N.A.)
| | - Olga S. Ostroumova
- Institute of Cytology of the Russian Academy of Sciences, Tikhoretsky Ave. 4, 194064 St. Petersburg, Russia; (A.A.Z.); (O.S.O.)
| | | | - Oxana V. Galzitskaya
- Gamaleya Research Centre of Epidemiology and Microbiology, 123098 Moscow, Russia;
- Institute of Protein Research, Russian Academy of Sciences, 142290 Pushchino, Russia; (S.Y.G.); (A.K.S.)
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, 142290 Pushchino, Russia; (M.I.K.); (R.S.F.)
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3
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Goles M, Daza A, Cabas-Mora G, Sarmiento-Varón L, Sepúlveda-Yañez J, Anvari-Kazemabad H, Davari MD, Uribe-Paredes R, Olivera-Nappa Á, Navarrete MA, Medina-Ortiz D. Peptide-based drug discovery through artificial intelligence: towards an autonomous design of therapeutic peptides. Brief Bioinform 2024; 25:bbae275. [PMID: 38856172 PMCID: PMC11163380 DOI: 10.1093/bib/bbae275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/23/2024] [Accepted: 06/04/2024] [Indexed: 06/11/2024] Open
Abstract
With their diverse biological activities, peptides are promising candidates for therapeutic applications, showing antimicrobial, antitumour and hormonal signalling capabilities. Despite their advantages, therapeutic peptides face challenges such as short half-life, limited oral bioavailability and susceptibility to plasma degradation. The rise of computational tools and artificial intelligence (AI) in peptide research has spurred the development of advanced methodologies and databases that are pivotal in the exploration of these complex macromolecules. This perspective delves into integrating AI in peptide development, encompassing classifier methods, predictive systems and the avant-garde design facilitated by deep-generative models like generative adversarial networks and variational autoencoders. There are still challenges, such as the need for processing optimization and careful validation of predictive models. This work outlines traditional strategies for machine learning model construction and training techniques and proposes a comprehensive AI-assisted peptide design and validation pipeline. The evolving landscape of peptide design using AI is emphasized, showcasing the practicality of these methods in expediting the development and discovery of novel peptides within the context of peptide-based drug discovery.
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Affiliation(s)
- Montserrat Goles
- Departamento de Ingeniería en Computación, Universidad de Magallanes, Av. Pdte. Manuel Bulnes 01855, 6210427, Punta Arenas, Chile
- Departamento de Ingeniería Química, Biotecnología y Materiales, Universidad de Chile, Beauchef 851, 8370456, Santiago, Chile
| | - Anamaría Daza
- Centre for Biotechnology and Bioengineering, CeBiB, Universidad de Chile, Beauchef 851, 8370456, Santiago, Chile
| | - Gabriel Cabas-Mora
- Departamento de Ingeniería en Computación, Universidad de Magallanes, Av. Pdte. Manuel Bulnes 01855, 6210427, Punta Arenas, Chile
| | - Lindybeth Sarmiento-Varón
- Centro Asistencial de Docencia e Investigación, CADI, Universidad de Magallanes, Av. Los Flamencos 01364, 6210005, Punta Arenas, Chile
| | - Julieta Sepúlveda-Yañez
- Facultad de Ciencias de la Salud, Universidad de Magallanes, Av. Pdte. Manuel Bulnes 01855, 6210427, Punta Arenas, Chile
| | - Hoda Anvari-Kazemabad
- Departamento de Ingeniería en Computación, Universidad de Magallanes, Av. Pdte. Manuel Bulnes 01855, 6210427, Punta Arenas, Chile
| | - Mehdi D Davari
- Department of Bioorganic Chemistry, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120, Halle, Germany
| | - Roberto Uribe-Paredes
- Departamento de Ingeniería en Computación, Universidad de Magallanes, Av. Pdte. Manuel Bulnes 01855, 6210427, Punta Arenas, Chile
| | - Álvaro Olivera-Nappa
- Centre for Biotechnology and Bioengineering, CeBiB, Universidad de Chile, Beauchef 851, 8370456, Santiago, Chile
| | - Marcelo A Navarrete
- Centro Asistencial de Docencia e Investigación, CADI, Universidad de Magallanes, Av. Los Flamencos 01364, 6210005, Punta Arenas, Chile
- Escuela de Medicina, Universidad de Magallanes, Av. Pdte. Manuel Bulnes 01855, 6210427, Punta Arenas, Chile
| | - David Medina-Ortiz
- Departamento de Ingeniería en Computación, Universidad de Magallanes, Av. Pdte. Manuel Bulnes 01855, 6210427, Punta Arenas, Chile
- Centre for Biotechnology and Bioengineering, CeBiB, Universidad de Chile, Beauchef 851, 8370456, Santiago, Chile
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4
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Kaganovich M, Taha M, Zig U, Tshuva EY, Shalev DE, Gamliel A, Reches M. Self-Assembly of a Dipeptide with a Reduced Amount of Copper into Antifungal and Antibacterial Particles. Biomacromolecules 2024; 25:1018-1026. [PMID: 38252413 PMCID: PMC11184556 DOI: 10.1021/acs.biomac.3c01092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/15/2023] [Accepted: 12/27/2023] [Indexed: 01/23/2024]
Abstract
With the growing concern over the environmental impact and health risks associated with conventional pesticides, there is a great need for developing safer and more sustainable alternatives. This study demonstrates the self-assembly of antimicrobial and antifungal spherical particles by a dipeptide utilizing a reduced amount of copper salt compared to the commonly employed formulation. The particles can be sprayed on a surface and form an antimicrobial coating. The effectiveness of the coating against the bacteria Pectobacterium brasiliense, a common pathogen affecting potato crops, was demonstrated, as the coating reduced the bacterial load by 7.3 log. Moreover, a comprehensive field trial was conducted, where the formulation was applied to potato seeds. Remarkably, it exhibited good efficacy against three prevalent potato pathogens (P. brasiliense, Pythium spp., and Spongospora subterranea) while demonstrating no phytotoxic effects on the potatoes. These findings highlight the tremendous potential of this formulation as a nonphytotoxic alternative to replace hazardous pesticides currently available in the market.
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Affiliation(s)
- Michaela Kaganovich
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
- The
Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Mohammad Taha
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Uri Zig
- Hevel
Maon Enterprises, Negev 8551900, Israel
| | - Edit Y. Tshuva
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
| | - Deborah E. Shalev
- Wolfson
Centre for Applied Structural Biology, The
Hebrew University of Jerusalem, Jerusalem 9190500, Israel
- Department
of Pharmaceutical Engineering, Azrieli College
of Engineering, Jerusalem 9103501, Israel
| | - Abraham Gamliel
- Laboratory
for Pest Management Research, Institute
of Agricultural Engineering, ARO—The Volcani Center, Rishon LeZion 7505001, Israel
| | - Meital Reches
- Institute
of Chemistry, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
- The
Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 9190401, Israel
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5
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Tang R, Tan H, Dai Y, Li L, Huang Y, Yao H, Cai Y, Yu G. Application of antimicrobial peptides in plant protection: making use of the overlooked merits. FRONTIERS IN PLANT SCIENCE 2023; 14:1139539. [PMID: 37538059 PMCID: PMC10394246 DOI: 10.3389/fpls.2023.1139539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 04/07/2023] [Indexed: 08/05/2023]
Abstract
Pathogen infection is one of the major causes of yield loss in the crop field. The rapid increase of antimicrobial resistance in plant pathogens has urged researchers to develop both new pesticides and management strategies for plant protection. The antimicrobial peptides (AMPs) showed potential on eliminating plant pathogenic fungi and bacteria. Here, we first summarize several overlooked advantages and merits of AMPs, which includes the steep dose-response relations, fast killing ability, broad synergism, slow resistance selection. We then discuss the possible application of AMPs for plant protection with above merits, and highlight how AMPs can be incorporated into a more efficient integrated management system that both increases the crop yield and reduce resistance evolution of pathogens.
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6
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Dho M, Candian V, Tedeschi R. Insect Antimicrobial Peptides: Advancements, Enhancements and New Challenges. Antibiotics (Basel) 2023; 12:952. [PMID: 37370271 DOI: 10.3390/antibiotics12060952] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 05/21/2023] [Accepted: 05/21/2023] [Indexed: 06/29/2023] Open
Abstract
Several insects are known as vectors of a wide range of animal and human pathogens causing various diseases. However, they are also a source of different substances, such as the Antimicrobial Peptides (AMPs), which can be employed in the development of natural bioactive compounds for medical, veterinary and agricultural applications. It is well known that AMP activity, in contrast to most classical antibiotics, does not lead to the development of natural bacterial resistance, or at least the frequency of resistance is considered to be low. Therefore, there is a strong interest in assessing the efficacy of the various peptides known to date, identifying new compounds and evaluating possible solutions in order to increase their production. Moreover, implementing AMP modulation in insect rearing could preserve insect health in large-scale production. This review describes the current knowledge on insect AMPs, presenting the validated ones for the different insect orders. A brief description of their mechanism of action is reported with focus on proposed applications. The possible effects of insect diet on AMP translation and synthesis have been discussed.
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Affiliation(s)
- Matteo Dho
- Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Largo P. Braccini 2, 10095 Grugliasco, Italy
| | - Valentina Candian
- Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Largo P. Braccini 2, 10095 Grugliasco, Italy
| | - Rosemarie Tedeschi
- Dipartimento di Scienze Agrarie, Forestali e Alimentari (DISAFA), University of Torino, Largo P. Braccini 2, 10095 Grugliasco, Italy
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7
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Lamer T, Vederas JC. Simplified cloning and isolation of peptides from "sandwiched" SUMO-peptide-intein fusion proteins. BMC Biotechnol 2023; 23:11. [PMID: 37020212 PMCID: PMC10074672 DOI: 10.1186/s12896-023-00779-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Accepted: 03/28/2023] [Indexed: 04/07/2023] Open
Abstract
BACKGROUND Some peptides are targets for degradation when heterologously expressed as fusion proteins in E. coli, which can limit yields after isolation and purification. We recently reported that peptide degradation may be prevented by production of a "sandwiched" SUMO-peptide-intein (SPI) fusion protein, which protects the target peptide sequence from truncation and improves yield. This initial system required cloning with two commercially available vectors. It used an N-terminal polyhistidine tagged small ubiquitin-like modifier (SUMO) protein and a C-terminal engineered Mycobacterium xenopii DNA Gyrase A intein with an inserted chitin binding domain (CBD) to create "sandwiched" fusion proteins of the form: His6-SUMO-peptide-intein-CBD. However, the major drawback of this previously reported fusion protein "sandwich" approach is the increased time and number of steps required to complete the cloning and isolation procedures, relative to the simple procedures to produce recombinant peptides in E. coli from a single (non-"sandwiched") fusion protein system. RESULTS In this work we generate the plasmid pSPIH6, which improves upon the previous system by encoding both the SUMO and intein proteins and allows facile construction of a SPI protein in a single cloning step. Additionally, the Mxe GyrA intein encoded in pSPIH6 contains a C-terminal polyhistidine tag, resulting in SPI fusion proteins of the form: His6-SUMO-peptide-intein-CBD-His6. The dual polyhistidine tags greatly simplify isolation procedures compared to the original SPI system, which we have here demonstrated with two linear bacteriocin peptides: leucocin A and lactococcin A. The yields obtained for both peptides after purification were also improved compared to the previous SPI system as a result of this streamlined protocol. CONCLUSIONS This modified SPI system and its simplified cloning and purification procedures described here may be generally useful as a heterologous E. coli expression system to obtain pure peptides in high yield, especially when degradation of the target peptide is an issue.
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Affiliation(s)
- Tess Lamer
- Department of Chemistry, University of Alberta, Edmonton, AB, T6G 2G2, Canada
| | - John C Vederas
- Department of Chemistry, University of Alberta, Edmonton, AB, T6G 2G2, Canada.
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8
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Loot a burning house: Strategies to enhance the antibacterial activity of antimicrobial peptides. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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9
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Dini I, De Biasi MG, Mancusi A. An Overview of the Potentialities of Antimicrobial Peptides Derived from Natural Sources. Antibiotics (Basel) 2022; 11:1483. [PMID: 36358138 PMCID: PMC9686932 DOI: 10.3390/antibiotics11111483] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 07/21/2023] Open
Abstract
Antimicrobial peptides (AMPs) are constituents of the innate immune system in every kind of living organism. They can act by disrupting the microbial membrane or without affecting membrane stability. Interest in these small peptides stems from the fear of antibiotics and the emergence of microorganisms resistant to antibiotics. Through membrane or metabolic disruption, they defend an organism against invading bacteria, viruses, protozoa, and fungi. High efficacy and specificity, low drug interaction and toxicity, thermostability, solubility in water, and biological diversity suggest their applications in food, medicine, agriculture, animal husbandry, and aquaculture. Nanocarriers can be used to protect, deliver, and improve their bioavailability effectiveness. High cost of production could limit their use. This review summarizes the natural sources, structures, modes of action, and applications of microbial peptides in the food and pharmaceutical industries. Any restrictions on AMPs' large-scale production are also taken into consideration.
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Affiliation(s)
- Irene Dini
- Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Napoli, Italy
| | | | - Andrea Mancusi
- Department of Food Microbiology, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Via Salute 2, 80055 Portici, Italy
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10
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Maximiano MR, Rios TB, Campos ML, Prado GS, Dias SC, Franco OL. Nanoparticles in association with antimicrobial peptides (NanoAMPs) as a promising combination for agriculture development. Front Mol Biosci 2022; 9:890654. [PMID: 36081849 PMCID: PMC9447862 DOI: 10.3389/fmolb.2022.890654] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Accepted: 07/15/2022] [Indexed: 11/13/2022] Open
Abstract
Antimicrobial peptides are small molecules, up to 10 kDa, present in all kingdoms of life, including in plants. Several studies report that these molecules have a broad spectrum of activity, including antibacterial, antifungal, antiviral, and insecticidal activity. Thus, they can be employed in agriculture as alternative tools for phytopathogen and pest control. However, the application of peptides in agriculture can present challenges, such as loss of activity due to degradation of these molecules, off-target effects, and others. In this context, nanotechnology can offer versatile structures, including metallic nanoparticles, liposomes, polymeric nanoparticles, nanofibers, and others, which might act both in protection and in release of AMPs. Several polymers and biomaterials can be employed for the development of nanostructures, such as inorganic metals, natural or synthetic lipids, synthetic and hybrid polymers, and others. This review addresses the versatility of NanoAMPs (Nanoparticles in association with antimicrobial peptides), and their potential applications in agribusiness, as an alternative for the control of phytopathogens in crops.
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Affiliation(s)
- Mariana Rocha Maximiano
- S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Thuanny Borba Rios
- S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
| | - Marcelo Lattarulo Campos
- Integrative Plant Research Laboratory, Departamento de Botânica e Ecologia, Instituto de Biociências, Universidade Federal de MT, Cuiabá, Brazil
| | | | - Simoni Campos Dias
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- Pós-graduação em Biologia Animal, Instituto de Biologia, Universidade de Brasília, Brasília, DF, Brazil
| | - Octávio Luiz Franco
- S-Inova Biotech, Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande, Brazil
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Brazil
- *Correspondence: Octávio Luiz Franco,
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11
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González-Acosta S, Baca-González V, Asensio-Calavia P, Otazo-Pérez A, López MR, Morales-delaNuez A, Pérez de la Lastra JM. Efficient Oral Priming of Tenebrio molitor Larvae Using Heat-Inactivated Microorganisms. Vaccines (Basel) 2022; 10:vaccines10081296. [PMID: 36016184 PMCID: PMC9415734 DOI: 10.3390/vaccines10081296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/04/2022] [Accepted: 08/06/2022] [Indexed: 11/16/2022] Open
Abstract
Microbial resistance is a global health problem that will increase over time. Advances in insect antimicrobial peptides (AMPs) offer a powerful new approach to combat antimicrobial resistance. Invertebrates represent a rich group of animals for the discovery of new antimicrobial agents due to their high diversity and the presence of adaptive immunity or “immune priming”. Here, we report a priming approach for Tenebrio molitor that simulates natural infection via the oral route. This oral administration has the advantage of minimizing the stress caused by conventional priming techniques and could be a viable method for mealworm immunity studies. When using inactivated microorganisms for oral priming, our results showed an increased survival of T. molitor larvae after exposure to various pathogens. This finding was consistent with the induction of antimicrobial activity in the hemolymph of primed larvae. Interestingly, the hemolymph of larvae orally primed with Escherichia coli showed constitutive activity against Staphylococcus aureus and heterologous activity for other Gram-negative bacteria, such as Salmonella enterica. The priming of T. molitor is generally performed via injection of the microorganism. To our knowledge, this is the first report describing the oral administration of heat-inactivated microorganisms for priming mealworms. This technique has the advantage of reducing the stress that occurs with the conventional methods for priming vertebrates.
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Affiliation(s)
- Sergio González-Acosta
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
- Escuela de Doctorado y Estudios de Posgrado, Universidad de La Laguna Avda, Astrofísico Francisco Sánchez, SN. Edificio Calabaza-Apdo, 456, 38200 San Cristóbal de La Laguna, Spain
| | - Victoria Baca-González
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
| | - Patricia Asensio-Calavia
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
- Escuela de Doctorado y Estudios de Posgrado, Universidad de La Laguna Avda, Astrofísico Francisco Sánchez, SN. Edificio Calabaza-Apdo, 456, 38200 San Cristóbal de La Laguna, Spain
| | - Andrea Otazo-Pérez
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
- Escuela de Doctorado y Estudios de Posgrado, Universidad de La Laguna Avda, Astrofísico Francisco Sánchez, SN. Edificio Calabaza-Apdo, 456, 38200 San Cristóbal de La Laguna, Spain
| | - Manuel R. López
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
| | - Antonio Morales-delaNuez
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
| | - José Manuel Pérez de la Lastra
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología, (IPNA-CSIC), 38206 San Cristóbal de la Laguna, Spain
- Correspondence: ; Tel.: +34-922-474334
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12
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Khusro A, Aarti C. Metabolic heterogeneity and techno-functional attributes of fermented foods-associated coagulase-negative staphylococci. Food Microbiol 2022; 105:104028. [DOI: 10.1016/j.fm.2022.104028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 03/13/2022] [Accepted: 03/13/2022] [Indexed: 01/03/2023]
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13
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Hu X, Carter J, Ge T, Liao M, Margaret Stephens A, Mclnnes EF, Padia F, Lu JR. Impacts of chain and head lengths of nonionic alkyl ethoxylate surfactants on cytotoxicity to human corneal and skin cells in agri-spraying processes*. J Colloid Interface Sci 2022; 628:162-173. [DOI: 10.1016/j.jcis.2022.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/19/2022] [Accepted: 08/03/2022] [Indexed: 10/15/2022]
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Wang N, Gao J, Wang Q, Xiao S, Zhuang G. Antimicrobial peptide antibiotics inhibit aerobic denitrification via affecting electron transportation and remolding carbon metabolism. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128616. [PMID: 35359112 DOI: 10.1016/j.jhazmat.2022.128616] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/17/2022] [Accepted: 02/28/2022] [Indexed: 06/14/2023]
Abstract
The harmful effects of antibiotics on biological denitrification have attracted widespread attention due to their excessive usage. Polymyxin B (PMB) as the typical antimicrobial peptides having been regarded as the "last hope" for treatment of multidrug-resistance bacteria, has also been detected in wastewater. However, little is known about the influence of PMB on aerobic denitrification. In this study, the impact of PMB on aerobic denitrification performance was investigated. Results showed 0.50 mg/L PMB decreased nitrate removal efficiency from 97.4% to 85.3%, and drove denitrifiers to transform more nitrate to biomass instead of producing gas-N. The live/dead staining method showed PMB damaged bacterial membrane. Transcriptome analysis further indicated the key enzymes participating in denitrification and aerobic respiratory chains were suppressed by PMB. To resist the PMB stress, denitrifiers formed thicker biofilm to protect cells from PMB damaging and thus remodeling the central carbon metabolism. Further investigation revealed denitrifiers have different preference on various carbon sources when PMB is present. Subsequently, the underlying mechanism of the distinctive carbon sources preference was explored by the combination of transcriptome and metabolism analysis. Overall, our data suggested denitrifiers have distinctive carbon sources preference under PMB treatment conditions, reminding us that carbon source selection should be cautious in practical applications.
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Affiliation(s)
- Na Wang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Gao
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Qiuying Wang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shujie Xiao
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guoqiang Zhuang
- CAS Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China.
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Peptide Conjugates Derived from flg15, Pep13, and PIP1 That Are Active against Plant-Pathogenic Bacteria and Trigger Plant Defense Responses. Appl Environ Microbiol 2022; 88:e0057422. [PMID: 35638842 PMCID: PMC9238401 DOI: 10.1128/aem.00574-22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Thirty peptide conjugates were designed by combining an antimicrobial peptide (BP16, BP100, BP143, KSL-W, BP387, or BP475) at the N- or C-terminus of a plant defense elicitor peptide (flg15, BP13, Pep13, or PIP1). These conjugates were highly active in vitro against six plant-pathogenic bacteria, especially against Xanthomonas arboricola pv. pruni, Xanthomonas fragariae and Xanthomonas axonopodis pv. vesicatoria. The most active peptides were those incorporating Pep13. The order of the conjugation influenced the antibacterial activity and the hemolysis. Regarding the former, peptide conjugates incorporating the elicitor peptide flg15 or Pep13 at the C-terminus were, in general, more active against Pseudomonas syringae pv. actinidiae and P. syringae pv. syringae, whereas those bearing these elicitor peptides at the N-terminus displayed higher activity against Erwinia. amylovora and the Xanthomonas species. The best peptide conjugates displayed MIC values between 0.8 and 12.5 μM against all the bacteria tested and also had low levels of hemolysis and low phytotoxicity. Analysis of the structural and physicochemical parameters revealed that a positive charge ranging from +5 to +7 and a moderate hydrophobic moment/amphipathic character is required for an optimal biological profile. Interestingly, flg15-BP475 exhibited a dual activity, causing the upregulation of the same genes as flg15 and reducing the severity of bacterial spot in tomato plants with a similar or even higher efficacy than copper oxychloride. Characterization by nuclear magnetic resonance (NMR) of the secondary structure of flg15-BP475 showed that residues 10 to 25 fold into an α-helix. This study establishes trends to design new bifunctional peptides useful against plant diseases caused by plant-pathogenic bacteria. IMPORTANCE The consequences of plant pathogens on crop production together with the lack of effective and environmentally friendly pesticides evidence the need of new agents to control plant diseases. Antimicrobial and plant defense elicitor peptides have emerged as good candidates to tackle this problem. This study focused on combining these two types of peptides into a single conjugate with the aim to potentiate the activity of the individual fragments. Differences in the biological activity of the resulting peptide conjugates were obtained depending on their charge, amphipathicity, and hydrophobicity, as well as on the order of the conjugation of the monomers. This work provided bifunctional peptide conjugates able to inhibit several plant-pathogenic bacteria, to stimulate plant defense responses, and to reduce the severity of bacterial spot in tomato plants. Thus, this study could serve as the basis for the development of new antibacterial/plant defense elicitor peptides to control bacterial plant pathogens.
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16
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Erdem Büyükkiraz M, Kesmen Z. Antimicrobial peptides (AMPs): A promising class of antimicrobial compounds. J Appl Microbiol 2021; 132:1573-1596. [PMID: 34606679 DOI: 10.1111/jam.15314] [Citation(s) in RCA: 111] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 08/26/2021] [Accepted: 09/17/2021] [Indexed: 12/13/2022]
Abstract
Antimicrobial peptides (AMPs) are compounds, which have inhibitory activity against microorganisms. In the last decades, AMPs have become powerful alternative agents that have met the need for novel anti-infectives to overcome increasing antibiotic resistance problems. Moreover, recent epidemics and pandemics are increasing the popularity of AMPs, due to the urgent necessity for effective antimicrobial agents in combating the new emergence of microbial diseases. AMPs inhibit a wide range of microorganisms through diverse and special mechanisms by targeting mainly cell membranes or specific intracellular components. In addition to extraction from natural sources, AMPs are produced in various hosts using recombinant methods. More recently, the synthetic analogues of AMPs, designed with some modifications, are predicted to overcome the limitations of stability, toxicity and activity associated with natural AMPs. AMPs have potential applications as antimicrobial agents in food, agriculture, environment, animal husbandry and pharmaceutical industries. In this review, we have provided an overview of the structure, classification and mechanism of action of AMPs, as well as discussed opportunities for their current and potential applications.
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Affiliation(s)
- Mine Erdem Büyükkiraz
- School of Health Sciences, Department of Nutrition and Dietetics, Cappadocia University, Nevsehir, Turkey
| | - Zülal Kesmen
- Engineering Faculty, Department of Food Engineering, Erciyes University, Kayseri, Turkey
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17
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Chen EHL, Weng CW, Li YM, Wu MC, Yang CC, Lee KT, Chen RPY, Cheng CP. De Novo Design of Antimicrobial Peptides With a Special Charge Pattern and Their Application in Combating Plant Pathogens. FRONTIERS IN PLANT SCIENCE 2021; 12:753217. [PMID: 34659322 PMCID: PMC8514817 DOI: 10.3389/fpls.2021.753217] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 09/06/2021] [Indexed: 06/13/2023]
Abstract
Plant diseases are important issues in agriculture, and the development of effective and environment-friendly means of disease control is crucial and highly desired. Antimicrobial peptides (AMPs) are known as potential alternatives to chemical pesticides because of their potent broad-spectrum antimicrobial activity and because they have no risk, or have only a low risk, of developing chemical-resistant pathogens. In this study, we designed a series of amphipathic helical peptides with different spatial distributions of positive charges and found that the peptides that had a special sequence pattern "BBHBBHHBBH" ("B" for basic residue and "H" for hydrophobic residue) displayed excellent bactericidal and fungicidal activities in a wide range of economically important plant pathogens. The peptides with higher helical propensity had lower antimicrobial activity. When we modified the peptides with a long acyl chain at their N-terminus, their plant protection effect improved. Our application of the fatty acyl-modified peptides on the leaves of tomato and Arabidopsis plants lessened the infection caused by Pectobacterium carotovorum subsp. carotovorum and Botrytis cinerea. Our study provides important insights on the development of more potent novel AMPs for plant protection.
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Affiliation(s)
- Eric H. -L. Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Cheng-Wei Weng
- Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
| | - Yi-Min Li
- Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
| | - Ming-Chin Wu
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
| | - Chien-Chih Yang
- Department of Biochemical Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Kung-Ta Lee
- Department of Biochemical Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Rita P. -Y. Chen
- Institute of Biological Chemistry, Academia Sinica, Taipei, Taiwan
- Institute of Biochemical Sciences, National Taiwan University, Taipei, Taiwan
| | - Chiu-Ping Cheng
- Institute of Plant Biology, National Taiwan University, Taipei, Taiwan
- Department of Life Science, National Taiwan University, Taipei, Taiwan
- Global Agriculture Technology and Genomic Science Master Program, National Taiwan University, Taipei, Taiwan
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18
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Falcigno L, D’Auria G, Palmieri G, Gogliettino M, Agrillo B, Tatè R, Dardano P, Nicolais L, Balestrieri M. Key Physicochemical Determinants in the Antimicrobial Peptide RiLK1 Promote Amphipathic Structures. Int J Mol Sci 2021; 22:10011. [PMID: 34576174 PMCID: PMC8472000 DOI: 10.3390/ijms221810011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/09/2021] [Accepted: 09/14/2021] [Indexed: 12/14/2022] Open
Abstract
Antimicrobial peptides (AMPs) represent a skilled class of new antibiotics, due to their broad range of activity, rapid killing, and low bacterial resistance. Many efforts have been made to discover AMPs with improved performances, i.e., high antimicrobial activity, low cytotoxicity against human cells, stability against proteolytic degradation, and low costs of production. In the design of new AMPs, several physicochemical features, such as hydrophobicity, net positive charge, propensity to assume amphipathic conformation, and self-assembling properties, must be considered. Starting from the sequence of the dodecapeptide 1018-K6, we designed a new 10-aminoacid peptide, namely RiLK1, which is highly effective against both fungi and Gram-positive and -negative bacteria at low micromolar concentrations without causing human cell cytotoxicity. In order to find the structural reasons explaining the improved performance of RiLK1 versus 1018-K6, a comparative analysis of the two peptides was carried out with a combination of CD, NMR, and fluorescence spectroscopies, while their self-assembling properties were analyzed by optical and atomic force microscopies. Interestingly, the different spectroscopic and microscopic profiles exhibited by the two peptides, including the propensity of RiLK1 to adopt helix arrangements in contrast to 1018-K6, could explain the improved bactericidal, antifungal, and anti-biofilm activities shown by the new peptide against a panel of food pathogens.
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Affiliation(s)
- Lucia Falcigno
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (L.F.); (G.D.)
| | - Gabriella D’Auria
- Department of Pharmacy, University of Naples Federico II, Via D. Montesano 49, 80131 Naples, Italy; (L.F.); (G.D.)
| | - Gianna Palmieri
- Institute of Biosciences and BioResources, National Research Council (IBBR-CNR), Via Pietro Castellino 111, 80131 Naples, Italy; (B.A.); (M.B.)
| | - Marta Gogliettino
- Institute of Biosciences and BioResources, National Research Council (IBBR-CNR), Via Pietro Castellino 111, 80131 Naples, Italy; (B.A.); (M.B.)
| | - Bruna Agrillo
- Institute of Biosciences and BioResources, National Research Council (IBBR-CNR), Via Pietro Castellino 111, 80131 Naples, Italy; (B.A.); (M.B.)
- Materias Srl, Corso N. Protopisani 70, 80146 Naples, Italy;
- Department of Biology, University of Naples Federico II di Monte Sant’Angelo, Via Cintia 21, 80126 Naples, Italy
| | - Rosarita Tatè
- Institute of Genetics and Biophysics, National Research Council (IGB-CNR), Via Pietro Castellino 111, 80131 Naples, Italy;
| | - Principia Dardano
- Institute of Applied Sciences & Intelligent Systems, National Research Council (ISASI-CNR), Via Pietro Castellino 111, 80131 Naples, Italy;
| | - Luigi Nicolais
- Materias Srl, Corso N. Protopisani 70, 80146 Naples, Italy;
| | - Marco Balestrieri
- Institute of Biosciences and BioResources, National Research Council (IBBR-CNR), Via Pietro Castellino 111, 80131 Naples, Italy; (B.A.); (M.B.)
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19
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Wang W, Feng G, Li X, Ruan C, Ming J, Zeng K. Inhibition of Three Citrus Pathogenic Fungi by Peptide PAF56 Involves Cell Membrane Damage. Foods 2021; 10:foods10092031. [PMID: 34574141 PMCID: PMC8469410 DOI: 10.3390/foods10092031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/17/2021] [Accepted: 08/27/2021] [Indexed: 11/21/2022] Open
Abstract
The peptide PAF56 (GHRKKWFW) was reported to be an effective control for the main diseases of citrus fruit during postharvest storage. However, the mechanism of action of PAF56 is still unknown. In this paper, PAF56 might not induce defense resistance of citrus fruit. The SEM results visually indicated that the fungi mycelia became shrunken and distorted after being treated with PAF56. The destructive effects of PAF56 on the mycelial cell membrane of three kinds of pathogenic fungi (Penicillium digitatum, Penicillium italicum, and Geotrichum citri-aurantii) were verified by the K+ leakage and the release of nucleic acid. Furthermore, the interaction between peptide PAF56 and the pathogen spores was investigated, including the changes in cell membrane permeability and dynamic observation of the interaction of fluorescein labeled TMR-PAF56 and Geotrichum candidum spores. The results indicated that the antifungal activity of PAF56 on spores was time-dependent and directly related to the membrane damage. This research provided useful references for further research and practical application of peptides.
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Affiliation(s)
- Wenjun Wang
- College of Food Science, Southwest University, Chongqing 400715, China; (W.W.); (G.F.); (X.L.); (C.R.); (J.M.)
| | - Guirong Feng
- College of Food Science, Southwest University, Chongqing 400715, China; (W.W.); (G.F.); (X.L.); (C.R.); (J.M.)
| | - Xindan Li
- College of Food Science, Southwest University, Chongqing 400715, China; (W.W.); (G.F.); (X.L.); (C.R.); (J.M.)
| | - Changqing Ruan
- College of Food Science, Southwest University, Chongqing 400715, China; (W.W.); (G.F.); (X.L.); (C.R.); (J.M.)
- Research Center of Food Storage & Logistics, Southwest University, Chongqing 400715, China
| | - Jian Ming
- College of Food Science, Southwest University, Chongqing 400715, China; (W.W.); (G.F.); (X.L.); (C.R.); (J.M.)
- Research Center of Food Storage & Logistics, Southwest University, Chongqing 400715, China
| | - Kaifang Zeng
- College of Food Science, Southwest University, Chongqing 400715, China; (W.W.); (G.F.); (X.L.); (C.R.); (J.M.)
- Research Center of Food Storage & Logistics, Southwest University, Chongqing 400715, China
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, Chongqing 401331, China
- Correspondence:
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20
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Lawrence TJ, Carper DL, Spangler MK, Carrell AA, Rush TA, Minter SJ, Weston DJ, Labbé JL. amPEPpy 1.0: a portable and accurate antimicrobial peptide prediction tool. Bioinformatics 2021; 37:2058-2060. [PMID: 33135060 DOI: 10.1093/bioinformatics/btaa917] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/07/2020] [Accepted: 10/16/2020] [Indexed: 01/16/2023] Open
Abstract
SUMMARY Antimicrobial peptides (AMPs) are promising alternative antimicrobial agents. Currently, however, portable, user-friendly and efficient methods for predicting AMP sequences from genome-scale data are not readily available. Here we present amPEPpy, an open-source, multi-threaded command-line application for predicting AMP sequences using a random forest classifier. AVAILABILITY AND IMPLEMENTATION amPEPpy is implemented in Python 3 and is freely available through GitHub (https://github.com/tlawrence3/amPEPpy). SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Travis J Lawrence
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Dana L Carper
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Margaret K Spangler
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Alyssa A Carrell
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Tomás A Rush
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | | | - David J Weston
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Jessy L Labbé
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
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21
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Oliveras À, Moll L, Riesco-Llach G, Tolosa-Canudas A, Gil-Caballero S, Badosa E, Bonaterra A, Montesinos E, Planas M, Feliu L. D-Amino Acid-Containing Lipopeptides Derived from the Lead Peptide BP100 with Activity against Plant Pathogens. Int J Mol Sci 2021; 22:ijms22126631. [PMID: 34205705 PMCID: PMC8233901 DOI: 10.3390/ijms22126631] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 12/19/2022] Open
Abstract
From a previous collection of lipopeptides derived from BP100, we selected 18 sequences in order to improve their biological profile. In particular, analogues containing a D-amino acid at position 4 were designed, prepared, and tested against plant pathogenic bacteria and fungi. The biological activity of these sequences was compared with that of the corresponding parent lipopeptides with all L-amino acids. In addition, the influence of the length of the hydrophobic chain on the biological activity was evaluated. Interestingly, the incorporation of a D-amino acid into lipopeptides bearing a butanoyl or a hexanoyl chain led to less hemolytic sequences and, in general, that were as active or more active than the corresponding all L-lipopeptides. The best lipopeptides were BP475 and BP485, both incorporating a D-Phe at position 4 and a butanoyl group, with MIC values between 0.8 and 6.2 µM, low hemolysis (0 and 24% at 250 µM, respectively), and low phytotoxicity. Characterization by NMR of the secondary structure of BP475 revealed that the D-Phe at position 4 disrupts the α-helix and that residues 6 to 10 are able to fold in an α-helix. This secondary structure would be responsible for the high antimicrobial activity and low hemolysis of this lipopeptide.
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Affiliation(s)
- Àngel Oliveras
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
| | - Luís Moll
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17004 Girona, Spain; (L.M.); (E.B.); (A.B.); (E.M.)
| | - Gerard Riesco-Llach
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
| | - Arnau Tolosa-Canudas
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
| | - Sergio Gil-Caballero
- Serveis Tècnics de Recerca (NMR), Universitat de Girona, Parc Científic i Tecnològic de la UdG, Pic de Peguera 15, 17004 Girona, Spain;
| | - Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17004 Girona, Spain; (L.M.); (E.B.); (A.B.); (E.M.)
| | - Anna Bonaterra
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17004 Girona, Spain; (L.M.); (E.B.); (A.B.); (E.M.)
| | - Emilio Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17004 Girona, Spain; (L.M.); (E.B.); (A.B.); (E.M.)
| | - Marta Planas
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
- Correspondence: (M.P.); (L.F.)
| | - Lidia Feliu
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17004 Girona, Spain; (À.O.); (G.R.-L.); (A.T.-C.)
- Correspondence: (M.P.); (L.F.)
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22
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Jin Y, Wang Z, Dong AY, Huang YQ, Hao GF, Song BA. Web repositories of natural agents promote pests and pathogenic microbes management. Brief Bioinform 2021; 22:6294160. [PMID: 34098581 DOI: 10.1093/bib/bbab205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 05/10/2021] [Accepted: 05/10/2021] [Indexed: 12/30/2022] Open
Abstract
The grand challenge to meet the increasing demands for food by a rapidly growing global population requires protecting crops from pests. Natural active substances play a significant role in the sustainable pests and pathogenic microbes management. In recent years, natural products- (NPs), antimicrobial peptides- (AMPs), medicinal plant- and plant essential oils (EOs)-related online resources have greatly facilitated the development of pests and pathogenic microbes control agents in an efficient and economical manner. However, a comprehensive comparison, analysis and summary of these existing web resources are still lacking. Here, we surveyed these databases of NPs, AMPs, medicinal plants and plant EOs with insecticidal, antibacterial, antiviral and antifungal activity, and we compared their functionality, data volume, data sources and applicability. We comprehensively discussed the limitation of these web resources. This study provides a toolbox for bench scientists working in the pesticide, botany, biomedical and pharmaceutical engineering fields. The aim of the review is to hope that these web resources will facilitate the discovery and development of potential active ingredients of pests and pathogenic microbes control agents.
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Affiliation(s)
- Yin Jin
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Zheng Wang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - An-Yu Dong
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Yuan-Qin Huang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Ge-Fei Hao
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
| | - Bao-An Song
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Center for Research and Development of Fine Chemicals, Guizhou University, Guiyang 550025, P. R. China
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Caravaca-Fuentes P, Camó C, Oliveras À, Baró A, Francés J, Badosa E, Planas M, Feliu L, Montesinos E, Bonaterra A. A Bifunctional Peptide Conjugate That Controls Infections of Erwinia amylovora in Pear Plants. Molecules 2021; 26:molecules26113426. [PMID: 34198776 PMCID: PMC8201157 DOI: 10.3390/molecules26113426] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/28/2021] [Accepted: 06/02/2021] [Indexed: 12/11/2022] Open
Abstract
In this paper, peptide conjugates were designed and synthesized by incorporating the antimicrobial undecapeptide BP16 at the C- or N-terminus of the plant defense elicitor peptide flg15, leading to BP358 and BP359, respectively. The evaluation of their in vitro activity against six plant pathogenic bacteria revealed that BP358 displayed MIC values between 1.6 and 12.5 μM, being more active than flg15, BP16, BP359, and an equimolar mixture of BP16 and flg15. Moreover, BP358 was neither hemolytic nor toxic to tobacco leaves. BP358 triggered the overexpression of 6 out of the 11 plant defense-related genes tested. Interestingly, BP358 inhibited Erwinia amylovora infections in pear plants, showing slightly higher efficacy than the mixture of BP16 and flg15, and both treatments were as effective as the antibiotic kasugamycin. Thus, the bifunctional peptide conjugate BP358 is a promising agent to control fire blight and possibly other plant bacterial diseases.
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Affiliation(s)
- Pau Caravaca-Fuentes
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17003 Girona, Spain; (P.C.-F.); (C.C.); (À.O.); (M.P.); (L.F.)
| | - Cristina Camó
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17003 Girona, Spain; (P.C.-F.); (C.C.); (À.O.); (M.P.); (L.F.)
| | - Àngel Oliveras
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17003 Girona, Spain; (P.C.-F.); (C.C.); (À.O.); (M.P.); (L.F.)
| | - Aina Baró
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17003 Girona, Spain; (A.B.); (J.F.); (E.B.); (E.M.)
| | - Jesús Francés
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17003 Girona, Spain; (A.B.); (J.F.); (E.B.); (E.M.)
| | - Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17003 Girona, Spain; (A.B.); (J.F.); (E.B.); (E.M.)
| | - Marta Planas
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17003 Girona, Spain; (P.C.-F.); (C.C.); (À.O.); (M.P.); (L.F.)
| | - Lidia Feliu
- LIPPSO, Department of Chemistry, Campus Montilivi, University of Girona, 17003 Girona, Spain; (P.C.-F.); (C.C.); (À.O.); (M.P.); (L.F.)
| | - Emilio Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17003 Girona, Spain; (A.B.); (J.F.); (E.B.); (E.M.)
| | - Anna Bonaterra
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, Campus Montilivi, University of Girona, 17003 Girona, Spain; (A.B.); (J.F.); (E.B.); (E.M.)
- Correspondence: ; Tel.: +34-660719646
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Joshi JR, Yao L, Charkowski AO, Heuberger AL. Metabolites from Wild Potato Inhibit Virulence Factors of the Soft Rot and Blackleg Pathogen Pectobacterium brasiliense. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2021; 34:100-109. [PMID: 32960719 DOI: 10.1094/mpmi-08-20-0224-r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Potato (Solanum tuberosum L.) is the primary vegetable crop consumed worldwide and is largely affected by bacterial pathogens that can cause soft rot and blackleg disease. Recently, resistance to these diseases has been identified in the wild potato S. chacoense, and the mechanism of resistance is unknown. Here, it was hypothesized that S. chacoense stems or tubers have unique chemistry that confers resistance to the pathogen Pectobacterium brasiliense through bactericidal, bacteriostatic, or antivirulence activity. Stem and tuber metabolite extracts were collected from S. chacoense and tested for effects on Pectobacterium bacterial multiplication rates, and activity and expression of known exoenzymes and virulence genes using S. tuberosum extracts as a comparative control. Comparatively, the S. chacoense extracts did not affect bacterial multiplication rate; however, they did reduce pectinase, cellulase, and protease activities. The chemical extracts were profiled using a bioassay-guided fractionation, and a nontargeted metabolomics comparison of S. chacoense and S. tuberosum stems and tubers was performed. The data showed that selected alkaloids, phenolic amines, phenols, amines, and peptides are integrative chemical sources of resistance against the bacteria.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Janak R Joshi
- Department of Horticulture and Landscape Architecture, Colorado State University, Fort Collins, CO 80523, U.S.A
| | - Linxing Yao
- Analytical Resources Core-Bioanalysis and Omics Center, Colorado State University, Fort Collins, CO 80523, U.S.A
| | - Amy O Charkowski
- Department of Agricultural Biology, Colorado State University, Fort Collins, CO 80523, U.S.A
| | - Adam L Heuberger
- Department of Horticulture and Landscape Architecture, Colorado State University, Fort Collins, CO 80523, U.S.A
- Department of Soil and Crop Sciences, Colorado State University, Fort Collins, CO 80523, U.S.A
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Li X, Feng G, Wang W, Yi L, Deng L, Zeng K. Effects of Peptide C 12-OOWW-NH 2 on Transcriptome and Cell Wall of the Postharvest Fungal Pathogen Penicillium digitatum. Front Microbiol 2020; 11:574882. [PMID: 33042086 PMCID: PMC7527529 DOI: 10.3389/fmicb.2020.574882] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 08/24/2020] [Indexed: 11/17/2022] Open
Abstract
In this study, the transcriptional profiling of Penicillium digitatum after C12O3TR treatment was analyzed by RNA-Seq technology. A total of 2562 and 667 genes in P. digitatum were differentially expressed after 2 and 12 h treatment, respectively. These genes were respectively mapped to 91 and 79 KEGG pathways. The expression patterns of differentially expressed genes (DEGs) at 2 and 12 h were similar, mainly were the metabolic processes in cell wall, cell membrane, genetic information and energy. Particularly, the main metabolic process which was affected by C12O3TR stress for 2 and 12 h was cell integrity, including cell wall and cell membrane. The changes of chitin in cell wall was observed by Calcofluor White (CFW) staining assay. The weaker blue fluorescence in the cell wall septa, the decrease of β-1, 3-glucan synthase activity and the increase of chitinase and AKP activity showed that C12O3TR could damage the cell wall integrity. In conclusion, these results suggested that C12O3TR could inhibit the growth of P. digitatum through various mechanisms at transcriptional level, and could influence the cell wall permeability and integrity.
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Affiliation(s)
- Xindan Li
- College of Food Science, Southwest University, Chongqing, China
| | - Guirong Feng
- College of Food Science, Southwest University, Chongqing, China
| | - Wenjun Wang
- College of Food Science, Southwest University, Chongqing, China
| | - Lanhua Yi
- College of Food Science, Southwest University, Chongqing, China.,Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
| | - Lili Deng
- College of Food Science, Southwest University, Chongqing, China.,Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
| | - Kaifang Zeng
- College of Food Science, Southwest University, Chongqing, China.,Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
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26
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León Madrazo A, Segura Campos MR. Review of antimicrobial peptides as promoters of food safety: Limitations and possibilities within the food industry. J Food Saf 2020. [DOI: 10.1111/jfs.12854] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Anaí León Madrazo
- Facultad de Ingeniería Química Universidad Autónoma de Yucatán Mérida Yucatán Mexico
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27
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Qutb AM, Wei F, Dong W. Prediction and Characterization of Cationic Arginine-Rich Plant Antimicrobial Peptide SM-985 From Teosinte ( Zea mays ssp. mexicana). Front Microbiol 2020; 11:1353. [PMID: 32636825 PMCID: PMC7318549 DOI: 10.3389/fmicb.2020.01353] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Accepted: 05/26/2020] [Indexed: 12/17/2022] Open
Abstract
Antimicrobial peptides (AMPs) are effective against different plant pathogens and newly considered as part of plant defense systems. From prokaryotes to eukaryotes, AMPs can exist in all forms of life. SM-985 is a cationic AMP (CAMP) isolated from the cDNA library of Mexican teosinte (Zea mays ssp. mexicana). A computational prediction server running with different algorithms was used to screen the teosinte cDNA library for AMPs, and the SM-985 peptide was predicted as an AMP with high probability prediction values. SM-985 is an arginine-rich peptide and composed of 21 amino acids (MW: 2671.06 Da). The physicochemical properties of SM-985 are very promising as an AMP, including the net charge (+8), hydrophobicity ratio of 23%, Boman index of 5.19 kcal/mol, and isoelectric point of 12.95. The SM-985 peptide has amphipathic α-helix conformations. The antimicrobial activity of SM-985 was confirmed against six bacterial plant pathogens, and the MIC of SM-985 against Gram-positive indicators was 8 μM, while the MIC of SM-985 against Gram-negative indicators was 4 μM. The SM-985 interacting with the bacterial membrane and this interaction were examined by treatment of the bacterial indicators with FITC-SM-985 peptide, which showed a high binding affinity of SM-985 to the bacterial membrane (whether Gram-positive or Gram-negative). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images of the treated bacteria with SM-985 demonstrated cell membrane damage and cell lysis. In vivo antimicrobial activity was examined, and SM-985 prevented leaf spot disease infection caused by Pst DC3000 on Solanum lycopersicum. Moreover, SM-985 showed sensitivity to calcium chloride salt, which is a common feature of CAMPs.
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Affiliation(s)
- Abdelrahman M. Qutb
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, China
- Department of Agricultural Botany, Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
| | - Feng Wei
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Wubei Dong
- Department of Plant Pathology, College of Plant Science and Technology and the Key Lab of Crop Disease Monitoring and Safety Control in Hubei Province, Huazhong Agricultural University, Wuhan, China
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28
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Colagiorgi A, Festa R, Di Ciccio PA, Gogliettino M, Balestrieri M, Palmieri G, Anastasio A, Ianieri A. Rapid biofilm eradication of the antimicrobial peptide 1018-K6 against Staphylococcus aureus: A new potential tool to fight bacterial biofilms. Food Control 2020. [DOI: 10.1016/j.foodcont.2019.106815] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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29
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Characterization, expression profiling, and functional analysis of a Populus trichocarpa defensin gene and its potential as an anti-Agrobacterium rooting medium additive. Sci Rep 2019; 9:15359. [PMID: 31653915 PMCID: PMC6814764 DOI: 10.1038/s41598-019-51762-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Accepted: 09/25/2019] [Indexed: 01/07/2023] Open
Abstract
The diverse antimicrobial properties of defensins have attracted wide scientific interest in recent years. Also, antimicrobial peptides (AMPs), including cecropins, histatins, defensins, and cathelicidins, have recently become an antimicrobial research hotspot for their broad-spectrum antibacterial and antifungal activities. In addition, defensins play important roles in plant growth, development, and physiological metabolism, and demonstrate tissue specificity and regulation in response to pathogen attack or abiotic stress. In this study, we performed molecular cloning, characterization, expression profiling, and functional analysis of a defensin from Populus trichocarpa. The PtDef protein was highly expressed in the prokaryotic Escherichia coli system as a fusion protein (TrxA–PtDef). The purified protein exhibited strong antibacterial and antifungal functions. We then applied PtDef to rooting culture medium as an alternative exogenous additive to cefotaxime. PtDef expression levels increased significantly following both biotic and abiotic treatment. The degree of leaf damage observed in wild-type (WT) and transgenic poplars indicates that transgenic poplars that overexpress the PtDef gene gain enhanced disease resistance to Septotis populiperda. To further study the salicylic acid (SA) and jasmonic acid (JA) signal transduction pathways, SA- and JA-related and pathogenesis-related genes were analyzed using quantitative reverse-transcription polymerase chain reaction; there were significant differences in these pathways between transgenic and WT poplars. The defensin from Populus trichocarpa showed significant activity of anti-bacteria and anti-fungi. According to the results of qRT-PCR and physiological relevant indicators, the applied PtDef to rooting culture medium was chosen as an alternative exogenous additive to cefotaxime. Overexpressing the PtDef gene in poplar improve the disease resistance to Septotis populiperda.
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30
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Seyfi R, Kahaki FA, Ebrahimi T, Montazersaheb S, Eyvazi S, Babaeipour V, Tarhriz V. Antimicrobial Peptides (AMPs): Roles, Functions and Mechanism of Action. Int J Pept Res Ther 2019. [DOI: 10.1007/s10989-019-09946-9] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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31
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Tyagi A, Pankaj V, Singh S, Roy S, Semwal M, Shasany AK, Sharma A. PlantAFP: a curated database of plant-origin antifungal peptides. Amino Acids 2019; 51:1561-1568. [PMID: 31612325 DOI: 10.1007/s00726-019-02792-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 10/01/2019] [Indexed: 12/13/2022]
Abstract
Emerging infectious diseases (EIDs) are a severe problem caused by fungi in human and plant species across the world. They pose a worldwide threat to food security as well as human health. Fungal infections are increasing now day by day worldwide, and the current antimycotic drugs are not effective due to the emergence of resistant strains. Therefore, it is an urgent need for the finding of new plant-origin antifungal peptides (PhytoAFPs). Huge numbers of peptides were extracted from different plant species which play a protective role against fungal infection. Hundreds of plant-origin peptides with antifungal activity have already been reported. So there is a requirement of a dedicated platform which systematically catalogs plant-origin peptides along with their antifungal properties. PlantAFP database is a resource of experimentally verified plant-origin antifungal peptides, collected from research articles, patents, and public databases. The current release of PlantAFP database contains 2585 peptide entries among which 510 are unique peptides. Each entry provides comprehensive information of a peptide that includes its peptide sequence, peptide name, peptide class, length of the peptide, molecular mass, antifungal activity, and origin of peptides. Besides this primary information, PlantAFP stores peptide sequences in SMILES format. In order to facilitate the user, many tools have been integrated into this database that includes BLAST search, peptide search, SMILES search, and peptide-mapping is also included in the database. PlantAFP database is accessible at http://bioinformatics.cimap.res.in/sharma/PlantAFP/.
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Affiliation(s)
- Atul Tyagi
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Near Kukrail Picnic Spot, P.O.-CIMAP, Lucknow, Uttar Pradesh, 226 015, India.
| | - Vaishali Pankaj
- Amity Institute of Biotechnology, Amity University, Lucknow, Uttar Pradesh, 226010, India
| | - Sanjay Singh
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Near Kukrail Picnic Spot, P.O.-CIMAP, Lucknow, Uttar Pradesh, 226 015, India
| | - Sudeep Roy
- Department of Biomedical Engineering, Faculty of Electrical Engineering and communication, Brno University of Technology-Techicka-10, 61600, Brno, Czech Republic
| | - Manoj Semwal
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Near Kukrail Picnic Spot, P.O.-CIMAP, Lucknow, Uttar Pradesh, 226 015, India
| | - Ajit K Shasany
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Near Kukrail Picnic Spot, P.O.-CIMAP, Lucknow, Uttar Pradesh, 226 015, India
| | - Ashok Sharma
- Biotechnology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Near Kukrail Picnic Spot, P.O.-CIMAP, Lucknow, Uttar Pradesh, 226 015, India.
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Identification and Functional Characterization of a Novel Insecticidal Decapeptide from the Myrmicine Ant Manica rubida. Toxins (Basel) 2019; 11:toxins11100562. [PMID: 31557881 PMCID: PMC6832575 DOI: 10.3390/toxins11100562] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 09/16/2019] [Accepted: 09/23/2019] [Indexed: 01/06/2023] Open
Abstract
Ant venoms contain many small, linear peptides, an untapped source of bioactive peptide toxins. The control of agricultural insect pests currently depends primarily on chemical insecticides, but their intensive use damages the environment and human health, and encourages the emergence of resistant pest populations. This has promoted interest in animal venoms as a source of alternative, environmentally-friendly bio-insecticides. We tested the crude venom of the predatory ant, Manica rubida, and observed severe fitness costs in the parthenogenetic pea aphid (Acyrthosiphon pisum), a common agricultural pest. Therefore, we explored the M. rubida venom peptidome and identified a novel decapeptide U-MYRTX-MANr1 (NH2-IDPKVLESLV-CONH2) using a combination of Edman degradation and de novo peptide sequencing. Although this myrmicitoxin was inactive against bacteria and fungi, it reduced aphid survival and reproduction. Furthermore, both crude venom and U-MYRTX-MANr1 reversibly paralyzed injected aphids and induced a loss of body fluids. Components of M. rubida venom may act on various biological targets including ion channels and hemolymph coagulation proteins, as previously shown for other ant venom toxins. The remarkable insecticidal activity of M. rubida venom suggests it may be a promising source of additional bio-insecticide leads.
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Ren Z, Yao R, Liu Q, Deng Y, Shen L, Deng H, Zuo Z, Wang Y, Deng J, Cui H, Hu Y, Ma X, Fang J. Effects of antibacterial peptides on rumen fermentation function and rumen microorganisms in goats. PLoS One 2019; 14:e0221815. [PMID: 31469857 PMCID: PMC6716671 DOI: 10.1371/journal.pone.0221815] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 08/15/2019] [Indexed: 01/09/2023] Open
Abstract
Although many studies have confirmed that antimicrobial peptides (AMPs: PBD-mI and LUC-n) can be used as feed additives, there are few reports of their use in ruminants. The present study aimed to investigate the impact of AMPs on ameliorating rumen fermentation function and rumen microorganisms in goats. Eighteen 4-month-old Chuanzhong black goats were used in a 60-day experiment (6 goats per group). Group I was used as the control and was fed a basal diet, the group II were fed the basal diet supplemented with 2 g of AMPs [per goat/day] and group III were fed the basal diet supplemented 3 g of AMPs [per goat/day], respectively. Rumen fluid samples were collected at 0, 20 and 60 days. Bacterial 16S rRNA genes and ciliate protozoal 18S rRNA genes were amplified by PCR from DNA extracted from rumen samples. The amplicons were sequenced by Illumina MiSeq. Rumen fermentation parameters and digestive enzyme activities were also examined. Our results showed that dietary supplementation with AMPs increased the levels of the bacterial genera Fibrobacter, Anaerovibrio and Succiniclasticum and also increased the ciliates genus Ophryoscolex, but reduced the levels of the bacterial genera Selenomonas, Succinivibrio and Treponema, and the ciliate genera Polyplastron, Entodinium, Enoploplastron and Isotricha. Supplementation with AMPs increased the activities of xylanase, pectinase and lipase in the rumen, and also increased the concentrations of acetic acid, propionic acid and total volatile fatty acids. These changes were associated with improved growth performance in the goats. The results revealed that the goats fed AMPs showed improved rumen microbiota structures, altered ruminal fermentation, and improved efficiency regarding the utilization of feed; thereby indicating that AMPs can improve growth performance. AMPs are therefore suitable as feed additives in juvenile goats.
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Affiliation(s)
- Zhihua Ren
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Renjie Yao
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Qi Liu
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Youtian Deng
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Liuhong Shen
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Huidan Deng
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Zhicai Zuo
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Ya Wang
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Junliang Deng
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
- * E-mail:
| | - Hengmin Cui
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Yanchun Hu
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Xiaoping Ma
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
| | - Jing Fang
- The Key Laboratory of Animal Disease and Human Health of Sichuan Province, Key Laboratory of Environmental Hazard and Animal Disease of Sichuan Province, College of Veterinary Medicine, Sichuang Agricultural University, Chengdu Sichuang, China
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Torres MD, Sothiselvam S, Lu TK, de la Fuente-Nunez C. Peptide Design Principles for Antimicrobial Applications. J Mol Biol 2019; 431:3547-3567. [DOI: 10.1016/j.jmb.2018.12.015] [Citation(s) in RCA: 184] [Impact Index Per Article: 36.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 12/19/2018] [Accepted: 12/22/2018] [Indexed: 02/08/2023]
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Morais TP, Zaini PA, Chakraborty S, Gouran H, Carvalho CP, Almeida-Souza HO, Souza JB, Santos PS, Goulart LR, Luz JMQ, Nascimento R, Dandekar AM. The plant-based chimeric antimicrobial protein SlP14a-PPC20 protects tomato against bacterial wilt disease caused by Ralstonia solanacearum. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 280:197-205. [PMID: 30823998 DOI: 10.1016/j.plantsci.2018.11.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 11/01/2018] [Accepted: 11/26/2018] [Indexed: 06/09/2023]
Abstract
Cecropin-B (CecB) is a peptide with well-established antimicrobial properties against different phytopathogenic bacteria. Despite modest action against Ralstonia solanacearum, its animal source limits the acceptance in transgenic applications. To overcome this, we selected eight alpha-helical (AH) cationic peptides derived from plant protein sequences and investigated their antimicrobial properties against R. solanacearum. Remarkably, PPC20 (a linear AH-peptide present in phosphoenolpyruvate carboxylase) has a three-fold lower lethal dose on R. solanacearum than CecB and lower toxicity to human intestinal epithelial cells. Linking PPC20 to SlP14a (part of a pathogenesis-related protein) established an apoplast-targeted protein providing a means of secreting and stabilizing the antimicrobial peptide in the plant compartment colonized by the pathogen. SlP14a is also a potential antimicrobial, homologous to a human elastase which likely targets outer membrane proteins in Gram-negative bacteria. Recombinant SlP14a-PPC20 showed antibacterial activity against R. solanacearum in vitro, making it a promising candidate for plant protection. This was confirmed with genetically-modified tomato plants engineered to express SlP14a-PPC20, in which bacterial populations in stems were reduced compared to inoculated wild-type control plants. Disease symptoms were also markedly less severe in SlP14a-PPC20-expressing plants, demonstrating a viable strategy to improve resistance against bacterial wilt in tomato.
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Affiliation(s)
- Tâmara P Morais
- Institute of Agricultural Sciences, University of Uberlândia, Uberlândia, 38410-337, MG, Brazil; Institute of Genetics and Biochemistry, University of Uberlândia, Uberlândia, 38400-902, MG, Brazil
| | - Paulo A Zaini
- Department of Plant Sciences, University of California, Davis, 95616, CA, USA
| | - Sandeep Chakraborty
- Department of Plant Sciences, University of California, Davis, 95616, CA, USA
| | - Hossein Gouran
- Department of Plant Sciences, University of California, Davis, 95616, CA, USA
| | - Camila P Carvalho
- Department of Plant Pathology, University of São Paulo, Piracicaba, SP, 13418-900 Brazil
| | - Hebréia O Almeida-Souza
- Institute of Genetics and Biochemistry, University of Uberlândia, Uberlândia, 38400-902, MG, Brazil
| | - Jessica B Souza
- Institute of Genetics and Biochemistry, University of Uberlândia, Uberlândia, 38400-902, MG, Brazil
| | - Paula S Santos
- Institute of Genetics and Biochemistry, University of Uberlândia, Uberlândia, 38400-902, MG, Brazil
| | - Luiz R Goulart
- Institute of Genetics and Biochemistry, University of Uberlândia, Uberlândia, 38400-902, MG, Brazil; Department of Plant Sciences, University of California, Davis, 95616, CA, USA
| | - José M Q Luz
- Institute of Agricultural Sciences, University of Uberlândia, Uberlândia, 38410-337, MG, Brazil
| | - Rafael Nascimento
- Institute of Genetics and Biochemistry, University of Uberlândia, Uberlândia, 38400-902, MG, Brazil; Department of Plant Sciences, University of California, Davis, 95616, CA, USA
| | - Abhaya M Dandekar
- Department of Plant Sciences, University of California, Davis, 95616, CA, USA.
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Camó C, Bonaterra A, Badosa E, Baró A, Montesinos L, Montesinos E, Planas M, Feliu L. Antimicrobial peptide KSL-W and analogues: Promising agents to control plant diseases. Peptides 2019; 112:85-95. [PMID: 30508634 DOI: 10.1016/j.peptides.2018.11.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 01/08/2023]
Abstract
Recent strong restrictions on the use of pesticides has prompted the search for safer alternatives, being antimicrobial peptides promising candidates. Herein, with the aim of identifying new agents, 15 peptides reported as plant defense elicitors, promiscuous, multifunctional or antimicrobial were selected and tested against six plant pathogenic bacteria of economic importance. Within this set, KSL-W (KKVVFWVKFK-NH2) displayed high antibacterial activity against all the tested pathogens, low hemolysis and low phytotoxicity in tobacco leaves. This peptide was taken as a lead and 49 analogues were designed and synthesized, including N-terminal deletion sequences, peptides incorporating a d-amino acid and lipopeptides. The screening of these sequences revealed that a nine amino acid length was the minimum for activity. The presence of a d-amino acid significantly decreased the hemolysis and endowed KSL-W with the capacity to induce the expression of defense-related genes in tomato plants. The incorporation of an acyl chain led to sequences with high activity against Xanthomonas strains, low hemolysis and phytotoxicity. Therefore, this study demonstrates that KSL-W constitutes an excellent candidate as new agent to control plant diseases and can be considered as a lead to develop derivatives with multifunctional properties, including antimicrobial and plant defense elicitation.
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Affiliation(s)
- Cristina Camó
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, Girona, Spain
| | - Anna Bonaterra
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Aina Baró
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Laura Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Emilio Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, Girona, Spain
| | - Marta Planas
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, Girona, Spain.
| | - Lidia Feliu
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, Girona, Spain.
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Heep J, Klaus A, Kessel T, Seip M, Vilcinskas A, Skaljac M. Proteomic Analysis of the Venom from the Ruby Ant Myrmica rubra and the Isolation of a Novel Insecticidal Decapeptide. INSECTS 2019; 10:E42. [PMID: 30717163 PMCID: PMC6409562 DOI: 10.3390/insects10020042] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 01/21/2019] [Accepted: 01/24/2019] [Indexed: 11/24/2022]
Abstract
Ants are a biodiverse group of insects that have evolved toxic venom containing many undiscovered bioactive molecules. In this study, we found that the venom of the ruby ant Myrmica rubra is a rich source of peptides. LC-MS analysis revealed the presence of 142 different peptides varying in molecular weight, sequence length, and hydrophobicity. One of the most abundant peaks was selected for further biochemical and functional characterization. Combined Edman degradation and de novo peptide sequencing revealed the presence of a novel decapeptide (myrmicitoxin) with the amino acid sequence NH₂-IDPKLLESLA-CONH₂. The decapeptide was named U-MYRTX-MRArub1 and verified against a synthetic standard. The amidated peptide was tested in a synthetic form to determine the antimicrobial activity towards the bacterial pathogens and insecticidal potential against pea aphids (Acyrthosiphon pisum). This peptide did not show antimicrobial activity but it significantly reduced the survival of aphids. It also increased the sensitivity of the aphids to two commonly used chemical insecticides (imidacloprid and methomyl). Since ant venom research is still in its infancy, the findings of this first study on venom peptides derived from M. rubra highlight these insects as an important and rich source for discovery of novel lead structures with potential application in pest control.
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Affiliation(s)
- John Heep
- Bioresources Project Group, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstrasse 2, 35394 Giessen, Germany.
| | - Alica Klaus
- Bioresources Project Group, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstrasse 2, 35394 Giessen, Germany.
| | - Tobias Kessel
- Bioresources Project Group, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstrasse 2, 35394 Giessen, Germany.
| | - Maximilian Seip
- Bioresources Project Group, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstrasse 2, 35394 Giessen, Germany.
| | - Andreas Vilcinskas
- Bioresources Project Group, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstrasse 2, 35394 Giessen, Germany.
- Institute for Insect Biotechnology, Justus Liebig University of Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany.
| | - Marisa Skaljac
- Bioresources Project Group, Fraunhofer Institute for Molecular Biology and Applied Ecology, Winchesterstrasse 2, 35394 Giessen, Germany.
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Sun J, Jiang J, Liu L, Wang Z, Wei C. Expression of the hybrid antimicrobial peptide lactoferrin–lysozyme inPichia pastoris. Biotechnol Appl Biochem 2018; 66:202-208. [DOI: 10.1002/bab.1705] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 09/20/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Jie Sun
- Key Laboratory of Bioorganic Synthesis of Zhejiang ProvinceCollege of Biotechnology and BioengineeringZhejiang University of Technology Hangzhou People's Republic of China
| | - Jie Jiang
- Key Laboratory of Bioorganic Synthesis of Zhejiang ProvinceCollege of Biotechnology and BioengineeringZhejiang University of Technology Hangzhou People's Republic of China
| | - Lifeng Liu
- Key Laboratory of Bioorganic Synthesis of Zhejiang ProvinceCollege of Biotechnology and BioengineeringZhejiang University of Technology Hangzhou People's Republic of China
| | - Zhao Wang
- Key Laboratory of Bioorganic Synthesis of Zhejiang ProvinceCollege of Biotechnology and BioengineeringZhejiang University of Technology Hangzhou People's Republic of China
| | - Chun Wei
- Key Laboratory of Bioorganic Synthesis of Zhejiang ProvinceCollege of Biotechnology and BioengineeringZhejiang University of Technology Hangzhou People's Republic of China
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Mamarabadi M, Tanhaeian A, Ramezany Y. Antifungal activity of recombinant thanatin in comparison with two plant extracts and a chemical mixture to control fungal plant pathogens. AMB Express 2018; 8:180. [PMID: 30390158 PMCID: PMC6214488 DOI: 10.1186/s13568-018-0710-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2018] [Accepted: 10/29/2018] [Indexed: 12/22/2022] Open
Abstract
The most common method for controlling plant diseases is the application of chemical pesticides and sometimes use of resistant cultivars. Due to the effects of chemical pesticides on human and environmental health, mutation in pathogens and resistance to various toxins besides the challenges with resistant cultivar production, the constant use of these methods are not recommended any longer. Thus, use of biological control agents along with the natural ingredient extracted from plants and application of peptide with antimicrobial activity, have been the focus of many researchers. In the present study, the antifungal activity of two plant extracts named Turmeric and Persian lilac in comparison with a chemical mixture and recombinant thanatin were evaluated against five following fungal plant pathogens; Geotrichum candidum, Botrytis cinerea, Rhizoctonia solani, Alternaria tenuissima and Gibberella fujikuroi. The results showed that, all treatments have antifungal activity against tested fungi. Both plant extracts were shown an acceptable antifungal activity against tested fungi but their inhibition effects was not comparable with chemical mixture. Turmeric showed a higher rate of mycelial inhibition than Persian lilac. Amongst all treatment, thanatin showed a great antifungal activity by its application at µg level under both in vitro and in vivo condition. Considering to the compatibility of thanatin with human health and environmental safety we could imagine a clear perspective for the application of this recombinant peptide in sustainable agriculture.
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Wang W, Liu S, Deng L, Ming J, Yao S, Zeng K. Control of Citrus Post-harvest Green Molds, Blue Molds, and Sour Rot by the Cecropin A-Melittin Hybrid Peptide BP21. Front Microbiol 2018; 9:2455. [PMID: 30364142 PMCID: PMC6191494 DOI: 10.3389/fmicb.2018.02455] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/25/2018] [Indexed: 12/23/2022] Open
Abstract
In this study, the activity of the cecropin A-melittin hybrid peptide BP21 (Ac-FKLFKKILKVL-NH2) in controlling of citrus post-harvest green and blue molds and sour rot and its involved mechanism was studied. The minimum inhibitory concentrations of BP21 against Penicillium digitatum, Penicillium italicum, and Geotrichum candidum were 8, 8, and 4 μmol L-1, respectively. BP21 could inhibit the growth of mycelia, the scanning electron microscopy results clearly showed that the mycelia treated with BP21 shrank, formed a rough surface, became distorted and collapsed. Fluorescent staining with SYTOX Green (SG) indicated that BP21 could disintegrate membranes. Membrane permeability parameters, including extracellular conductivity, the leakage of potassium ions, and the release of cellular constituents, visibly increased as the BP21 concentration increased. Gross and irreversible damage to the cytoplasm and membranes was observed. There was a positive correlation between hemolytic activity and the concentration of BP21. These results suggest peptide BP21 could be used to control citrus post-harvest diseases.
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Affiliation(s)
- Wenjun Wang
- College of Food Science, Southwest University, Chongqing, China
| | - Sha Liu
- College of Food Science, Southwest University, Chongqing, China
| | - Lili Deng
- College of Food Science, Southwest University, Chongqing, China.,Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
| | - Jian Ming
- College of Food Science, Southwest University, Chongqing, China.,Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
| | - Shixiang Yao
- College of Food Science, Southwest University, Chongqing, China.,Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
| | - Kaifang Zeng
- College of Food Science, Southwest University, Chongqing, China.,Research Center of Food Storage & Logistics, Southwest University, Chongqing, China
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Bédard F, Hammami R, Zirah S, Rebuffat S, Fliss I, Biron E. Synthesis, antimicrobial activity and conformational analysis of the class IIa bacteriocin pediocin PA-1 and analogs thereof. Sci Rep 2018; 8:9029. [PMID: 29899567 PMCID: PMC5998028 DOI: 10.1038/s41598-018-27225-3] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 05/29/2018] [Indexed: 12/25/2022] Open
Abstract
The antimicrobial peptide pediocin PA-1 is a class IIa bacteriocin that inhibits several clinically relevant pathogens including Listeria spp. Here we report the synthesis and characterization of whole pediocin PA-1 and novel analogs thereof using a combination of solid- and solution-phase strategies to overcome difficulties due to instability and undesired reactions. Pediocin PA-1 thus synthesized was a potent inhibitor of Listeria monocytogenes (MIC = 6.8 nM), similar to the bacteriocin produced naturally by Pediococcus acidilactici. Of particular interest is that linear analogs lacking both of the disulfide bridges characterizing pediocin PA-1 were as potent. One linear analog was also a strong inhibitor of Clostridium perfringens, another important food-borne pathogen. These results are discussed in light of conformational information derived from circular dichroism, solution NMR spectroscopy and structure-activity relationship studies.
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Affiliation(s)
- François Bédard
- Faculté de pharmacie, Université Laval and Laboratoire de chimie médicinale, Centre de recherche du CHU de Québec, 2705 Boulevard Laurier, Québec, Québec, G1V 0A6, Canada
- STELA Dairy Research Centre, Institute of Nutrition and Functional Foods, Université Laval, Québec, Québec, G1V 0A6, Canada
| | - Riadh Hammami
- STELA Dairy Research Centre, Institute of Nutrition and Functional Foods, Université Laval, Québec, Québec, G1V 0A6, Canada
- School of Nutrition Sciences, University of Ottawa, Ottawa, ON, Canada, K1N 6N5
| | - Séverine Zirah
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Muséum national d'Histoire Naturelle, Sorbonne Universités, CNRS, CP 54, 57 rue Cuvier, 75005, Paris, France
| | - Sylvie Rebuffat
- Molécules de Communication et Adaptation des Microorganismes (MCAM, UMR 7245), Muséum national d'Histoire Naturelle, Sorbonne Universités, CNRS, CP 54, 57 rue Cuvier, 75005, Paris, France
| | - Ismail Fliss
- STELA Dairy Research Centre, Institute of Nutrition and Functional Foods, Université Laval, Québec, Québec, G1V 0A6, Canada
| | - Eric Biron
- Faculté de pharmacie, Université Laval and Laboratoire de chimie médicinale, Centre de recherche du CHU de Québec, 2705 Boulevard Laurier, Québec, Québec, G1V 0A6, Canada.
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Bédard F, Biron E. Recent Progress in the Chemical Synthesis of Class II and S-Glycosylated Bacteriocins. Front Microbiol 2018; 9:1048. [PMID: 29875754 PMCID: PMC5974097 DOI: 10.3389/fmicb.2018.01048] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 05/02/2018] [Indexed: 12/11/2022] Open
Abstract
A wide variety of antimicrobial peptides produced by lactic acid bacteria (LAB) have been identified and studied in the last decades. Known as bacteriocins, these ribosomally synthesized peptides inhibit the growth of a wide range of bacterial species through numerous mechanisms and show a great variety of spectrum of activity. With their great potential as antimicrobial additives and alternatives to traditional antibiotics in food preservation and handling, animal production and in veterinary and medical medicine, the demand for bacteriocins is rapidly increasing. Bacteriocins are most often produced by fermentation but, in several cases, the low isolated yields and difficulties associated with their purification seriously limit their use on a large scale. Chemical synthesis has been proposed for their production and recent advances in peptide synthesis methodologies have allowed the preparation of several bacteriocins. Moreover, the significant cost reduction for peptide synthesis reagents and building blocks has made chemical synthesis of bacteriocins more attractive and competitive. From a protein engineering point of view, the chemical approach offers many advantages such as the possibility to rapidly perform amino acid substitution, use unnatural or modified residues, and make backbone and side chain modifications to improve potency, modify the activity spectrum or increase the stability of the targeted bacteriocin. This review summarized synthetic approaches that have been developed and used in recent years to allow the preparation of class IIa bacteriocins and S-linked glycopeptides from LAB. Synthetic strategies such as the use of pseudoprolines, backbone protecting groups, microwave irradiations, selective disulfide bridge formation and chemical ligations to prepare class II and S-glycosylsated bacteriocins are discussed.
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Affiliation(s)
- François Bédard
- Faculty of Pharmacy and Institute of Nutrition and Functional Foods, Université Laval, Québec, QC, Canada
- Laboratory of Medicinal Chemistry, CHU de Québec Research Centre, Québec, QC, Canada
| | - Eric Biron
- Faculty of Pharmacy and Institute of Nutrition and Functional Foods, Université Laval, Québec, QC, Canada
- Laboratory of Medicinal Chemistry, CHU de Québec Research Centre, Québec, QC, Canada
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Güell I, Vilà S, Badosa E, Montesinos E, Feliu L, Planas M. Design, synthesis, and biological evaluation of cyclic peptidotriazoles derived from BPC194 as novel agents for plant protection. Biopolymers 2018; 108. [PMID: 28026016 DOI: 10.1002/bip.23012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 12/14/2016] [Accepted: 12/16/2016] [Indexed: 01/17/2023]
Abstract
The search for novel antimicrobial agents to be used for plant protection has prompted us to design analogues incorporating non-natural amino acids. Herein, we designed and synthesized cyclic peptidotriazoles derived from the lead antimicrobial cyclic peptide c(Lys-Lys-Leu3 -Lys-Lys5 -Phe-Lys-Lys-Leu-Gln) (BPC194). In particular, Leu3 and Lys5 were replaced by a triazolyl alanine, a triazolyl norleucine or a triazolyl lysine. These peptides were screened for their antibacterial activity against Xanthomonas axonopodis pv. vesicatoria, Erwinia amylovora, and Pseudomonas syringae pv. syringae, for their hemolysis and for their phytotoxicity. Results showed that the type of triazolyl amino acid and the substituent present at the triazole influenced the antibacterial and hemolytic activities. Moreover, the position of this residue was also crucial for the hemolysis. The lead compounds BPC548 and BPC550 exhibited high antibacterial activity (MIC of 3.1 to 25 μM), low hemolysis (19 and 26% at 375 μM, respectively) and low phytotoxicity. Therefore, these analogues could be used as new leads for the development of effective agents to control pathogenic bacteria responsible for plant diseases of economic importance.
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Affiliation(s)
- Imma Güell
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Sílvia Vilà
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Emilio Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Lidia Feliu
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
| | - Marta Planas
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, 17003, Girona, Spain
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Tryptophan-Containing Cyclic Decapeptides with Activity against Plant Pathogenic Bacteria. Molecules 2017; 22:molecules22111817. [PMID: 29072606 PMCID: PMC6150173 DOI: 10.3390/molecules22111817] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 10/25/2017] [Accepted: 10/25/2017] [Indexed: 12/03/2022] Open
Abstract
A library of 66 cyclic decapeptides incorporating a Trp residue was synthesized on solid phase and screened against the phytopathogenic bacteria Pseudomonas syringae pv. syringae, Xanthomonas axonopodis pv. vesicatoria, and Erwinia amylovora. The hemolytic activity of these peptides was also evaluated. The results obtained were compared with those of a collection of Phe analogues previously reported. The analysis of the data showed that the presence of the Trp improved the antibacterial activity against these three pathogens. In particular, 40 to 46 Trp analogues displayed lower minimum inhibitory concentration (MIC) values than their corresponding Phe counterparts. Interestingly, 26 Trp-containing sequences exhibited MIC of 0.8 to 3.1 μM against X. axonopodis pv. vesicatoria, 21 peptides MIC of 1.6 to 6.2 μM against P. syringae pv. syringae and six peptides MIC of 6.2 to 12.5 μM against E. amylovora. Regarding the hemolysis, in general, Trp derivatives displayed a percentage of hemolysis comparable to that of their Phe analogues. Notably, 49 Trp-containing cyclic peptides showed a hemolysis ≤ 20% at 125 μM. The peptides with the best biological activity profile were c(LKKKLWKKLQ) (BPC086W) and c(LKKKKWLLKQ) (BPC108W), which displayed MIC values ranging from 0.8 to 12.5 μM and a hemolysis ≤ 8% at 125 μM. Therefore, it is evident that these Trp sequences constitute promising candidates for the development of new agents for use in plant protection.
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Lactolisterin BU, a Novel Class II Broad-Spectrum Bacteriocin from Lactococcus lactis subsp. lactis bv. diacetylactis BGBU1-4. Appl Environ Microbiol 2017; 83:AEM.01519-17. [PMID: 28842543 DOI: 10.1128/aem.01519-17] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 08/20/2017] [Indexed: 11/20/2022] Open
Abstract
Lactococcus lactis subsp. lactis bv. diacetylactis BGBU1-4 produces a novel bacteriocin, lactolisterin BU, with strong antimicrobial activity against many species of Gram-positive bacteria, including important food spoilage and foodborne pathogens, such as Listeria monocytogenes, Staphylococcus aureus, Bacillus spp., and streptococci. Lactolisterin BU was extracted from the cell surface of BGBU1-4 by 2-propanol and purified to homogeneity by C18 solid-phase extraction and reversed-phase high-performance liquid chromatography. The molecular mass of the purified lactolisterin BU was 5,160.94 Da, and an internal fragment, AVSWAWQH, as determined by N-terminal sequencing, showed low-level similarity to existing antimicrobial peptides. Curing and transformation experiments revealed the presence of a corresponding bacteriocin operon on the smallest plasmid, pBU6 (6.2 kb), of strain BGBU1-4. Analysis of the bacteriocin operon revealed a leaderless bacteriocin of 43 amino acids that exhibited similarity to bacteriocin BHT-B (63%) from Streptococcus ratti, a bacteriocin with analogy to aureocin A.IMPORTANCE Lactolisterin BU, a broad-spectrum leaderless bacteriocin produced by L. lactis subsp. lactis bv. diacetylactis BGBU1-4, expresses strong antimicrobial activity against food spoilage and foodborne pathogens, such as Listeria monocytogenes, Staphylococcus aureus, Bacillus spp., and streptococci. Lactolisterin BU showed the highest similarity to aureocin-like bacteriocins produced by different bacteria. The operon for synthesis is located on the smallest plasmid, pBU6 (6.2 kb), of strain BGBU1-4, indicating possible horizontal transfer among producers.
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Luna-Ramirez K, Skaljac M, Grotmann J, Kirfel P, Vilcinskas A. Orally Delivered Scorpion Antimicrobial Peptides Exhibit Activity against Pea Aphid (Acyrthosiphon pisum) and Its Bacterial Symbionts. Toxins (Basel) 2017; 9:toxins9090261. [PMID: 28837113 PMCID: PMC5618194 DOI: 10.3390/toxins9090261] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 08/03/2017] [Accepted: 08/22/2017] [Indexed: 11/16/2022] Open
Abstract
Aphids are severe agricultural pests that damage crops by feeding on phloem sap and vectoring plant pathogens. Chemical insecticides provide an important aphid control strategy, but alternative and sustainable control measures are required to avoid rapidly emerging resistance, environmental contamination, and the risk to humans and beneficial organisms. Aphids are dependent on bacterial symbionts, which enable them to survive on phloem sap lacking essential nutrients, as well as conferring environmental stress tolerance and resistance to parasites. The evolution of aphids has been accompanied by the loss of many immunity-related genes, such as those encoding antibacterial peptides, which are prevalent in other insects, probably because any harm to the bacterial symbionts would inevitably affect the aphids themselves. This suggests that antimicrobial peptides (AMPs) could replace or at least complement conventional insecticides for aphid control. We fed the pea aphids (Acyrthosiphon pisum) with AMPs from the venom glands of scorpions. The AMPs reduced aphid survival, delayed their reproduction, displayed in vitro activity against aphid bacterial symbionts, and reduced the number of symbionts in vivo. Remarkably, we found that some of the scorpion AMPs compromised the aphid bacteriome, a specialized organ that harbours bacterial symbionts. Our data suggest that scorpion AMPs holds the potential to be developed as bio-insecticides, and are promising candidates for the engineering of aphid-resistant crops.
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Affiliation(s)
- Karen Luna-Ramirez
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Bioresources Project Group, Winchesterstrasse 2, 35394 Giessen, Germany.
| | - Marisa Skaljac
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Bioresources Project Group, Winchesterstrasse 2, 35394 Giessen, Germany.
| | - Jens Grotmann
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Bioresources Project Group, Winchesterstrasse 2, 35394 Giessen, Germany.
| | - Phillipp Kirfel
- Fraunhofer Institute for Molecular Biology and Applied Ecology (IME), Bioresources Project Group, Winchesterstrasse 2, 35394 Giessen, Germany.
| | - Andreas Vilcinskas
- Institute for Insect Biotechnology, Justus Liebig University of Giessen, Heinrich-Buff-Ring 26-32, 35392 Giessen, Germany.
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Sang M, Wei H, Zhang J, Wei Z, Wu X, Chen Y, Zhuge Q. Expression and characterization of the antimicrobial peptide ABP-dHC-cecropin A in the methylotrophic yeast Pichia pastoris. Protein Expr Purif 2017; 140:44-51. [PMID: 28827052 DOI: 10.1016/j.pep.2017.08.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 07/04/2017] [Accepted: 08/01/2017] [Indexed: 01/05/2023]
Abstract
ABP-dHC-cecropin A is a linear cationic peptide that exhibits antimicrobial properties. To explore a new approach for expression of ABP-dHC-cecropin A using the methylotrophic yeast Pichia pastoris, we cloned the ABP-dHC-cecropin A gene into the vector pPICZαA. The SacI-linearized plasmid pPICZαA-ABP-dHC-cecropin A was then transformed into P. pastoris GS115 by electroporation. Expression was induced after a 96-h incubation with 0.5% methanol at 20 °C in a culture supplied with 2% casamino acids to avoid proteolysis. Under these conditions, approximately 48 mg of ABP-dHC-cecropin A was secreted into 1L (4 × 250-mL)of medium. Recombinant ABP-dHC-cecropin A was purified using size-exclusion chromatography, and 21 mg of pure active ABP-dHC-cecropin A was obtained from 1L (4 × 250-mL)of culture. Electrophoresis on 4-20% gradient gels indicated that recombinant ABP-dHC-cecropin A was secreted as a protein approximately 4 kDa in size. Recombinant ABP-dHC-cecropin A was successfully expressed, as the product displayed antibacterial and antifungal activities (based on an antibacterial assay, scanning electron microscopy, and antifungal assay) indistinguishable from those of the synthesized protein.
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Affiliation(s)
- Ming Sang
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Hui Wei
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Jiaxin Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing 210037, China.
| | - Zhiheng Wei
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Xiaolong Wu
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Yan Chen
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing 210037, China
| | - Qiang Zhuge
- Co-Innovation Center for Sustainable Forestry in Southern China, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, Nanjing Forestry University, Nanjing 210037, China.
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Rational Design of Cyclic Antimicrobial Peptides Based on BPC194 and BPC198. Molecules 2017; 22:molecules22071054. [PMID: 28672817 PMCID: PMC6152393 DOI: 10.3390/molecules22071054] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Revised: 06/20/2017] [Accepted: 06/22/2017] [Indexed: 11/16/2022] Open
Abstract
A strategy for the design of antimicrobial cyclic peptides derived from the lead compounds c(KKLKKFKKLQ) (BPC194) and c(KLKKKFKKLQ) (BPC198) is reported. First, the secondary β-structure of BPC194 and BPC198 was analyzed by carrying out molecular dynamics (MD) simulations. Then, based on the sequence pattern and the β-structure of BPC194 or BPC198, fifteen analogues were designed and synthesized on solid-phase. The best peptides (BPC490, BPC918, and BPC924) showed minimum inhibitory concentration (MIC) values <6.2 μM against Pseudomonas syringae pv. syringae and Xanthomonas axonopodis pv. vesicatoria, and an MIC value of 12.5 to 25 μM against Erwinia amylovora, being as active as BPC194 and BPC198. Interestingly, these three analogues followed the structural pattern defined from the MD simulations of the parent peptides. Thus, BPC490 maintained the parallel alignment of the hydrophilic pairs K¹-K⁸, K²-K⁷, and K⁴-K⁵, whereas BPC918 and BPC924 included the two hydrophilic interactions K³-Q10 and K⁵-K⁸. In short, MD simulations have proved to be very useful for ascertaining the structural features of cyclic peptides that are crucial for their biological activity. Such approaches could be further employed for the development of new antibacterial cyclic peptides.
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Ma S, Sun Y, Wang F, Mi R, Wen Z, Li X, Meng N, Li Y, Du X, Li S. Effects of tussah immunoreactive substances on growth, immunity, disease resistance against Vibrio splendidus and gut microbiota profile of Apostichopus japonicus. FISH & SHELLFISH IMMUNOLOGY 2017; 63:471-479. [PMID: 28254498 DOI: 10.1016/j.fsi.2017.02.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/23/2017] [Accepted: 02/25/2017] [Indexed: 06/06/2023]
Abstract
Tussah immunoreactive substance (TIS) comprises a number of active chemicals with various bioactivities. The current study investigated the effects of these substances on the sea cucumber Apostichopus japonicus. The specific growth rate (SGR) of TIS-fed sea cucumbers was significantly enhanced, whereas no significant difference in SGR was observed between those soaked in antibiotics and those fed with basal diet only. TIS also improved the immune response of the animals when given at a dose of 1.0% or 2.0%, as shown by increased phagocytic, lysozyme, superoxide dismutase, alkaline phosphatase, acid phosphatase, and catalase activities following injection with live Vibrio splendidus. At a dose of 1.0% or 2.0%, TIS significantly enhanced the immune ability (P < 0.05) of the sea cucumbers, but except for lysozyme activity, other immune indices were reduced one day after the animals were injected with Vibrio splendidus. However, the values of these immune indexes were still significantly higher compared to those of the control groups (P < 0.05). Intestinal micro flora counts and high-throughput sequencing showed that dietary TIS could improve the amount of probiotic bacteria, yielding a 6-fold increase in Bacillus and 10-fold increase in Lactobacillus for sea cucumbers fed with 2.0% TIS diet compared to the control. Furthermore, TIS-containing diet also greatly reduced the number of harmful bacteria, with the number of Vibrio in sea cucumbers fed with 1%TIS diet decreased by 67% compared to the control. The results thus indicated that TIS increased the growth of sea cucumbers and enhanced their resistance to V. splendidus infection by improving the immunity of the animals. TIS also improved the gut microbiota profiles of the animals by increasing the probiotics and reducing the harmful bacteria within their guts.
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Affiliation(s)
- Shuhui Ma
- Dalian Biotechnology Research Institute, Liaoning Academy of Agricultural Sciences, Dalian 116024, PR China
| | - Yongxin Sun
- Dalian Biotechnology Research Institute, Liaoning Academy of Agricultural Sciences, Dalian 116024, PR China.
| | - Fuqiang Wang
- College of Fisheries and Life Science, Dalian Ocean University, Dalian 116024, PR China
| | - Rui Mi
- Dalian Biotechnology Research Institute, Liaoning Academy of Agricultural Sciences, Dalian 116024, PR China
| | - Zhixin Wen
- Dalian Biotechnology Research Institute, Liaoning Academy of Agricultural Sciences, Dalian 116024, PR China
| | - Xuejun Li
- Dalian Biotechnology Research Institute, Liaoning Academy of Agricultural Sciences, Dalian 116024, PR China
| | - Nan Meng
- Dalian Biotechnology Research Institute, Liaoning Academy of Agricultural Sciences, Dalian 116024, PR China
| | - Yajie Li
- Dalian Biotechnology Research Institute, Liaoning Academy of Agricultural Sciences, Dalian 116024, PR China
| | - Xingfan Du
- Dalian Biotechnology Research Institute, Liaoning Academy of Agricultural Sciences, Dalian 116024, PR China
| | - Shuying Li
- Dalian Biotechnology Research Institute, Liaoning Academy of Agricultural Sciences, Dalian 116024, PR China
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Cabrefiga J, Montesinos E. Lysozyme enhances the bactericidal effect of BP100 peptide against Erwinia amylovora, the causal agent of fire blight of rosaceous plants. BMC Microbiol 2017; 17:39. [PMID: 28212623 PMCID: PMC5316217 DOI: 10.1186/s12866-017-0957-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 02/14/2017] [Indexed: 11/24/2022] Open
Abstract
Background Fire blight is an important disease affecting rosaceous plants. The causal agent is the bacteria Erwinia amylovora which is poorly controlled with the use of conventional bactericides and biopesticides. Antimicrobial peptides (AMPs) have been proposed as a new compounds suitable for plant disease control. BP100, a synthetic linear undecapeptide (KKLFKKILKYL-NH2), has been reported to be effective against E. amylovora infections. Moreover, BP100 showed bacteriolytic activity, moderate susceptibility to protease degradation and low toxicity. However, the peptide concentration required for an effective control of infections in planta is too high due to some inactivation by tissue components. This is a limitation beause of the high cost of synthesis of this compound. We expected that the combination of BP100 with lysozyme may produce a synergistic effect, enhancing its activity and reducing the effective concentration needed for fire blight control. Results The combination of a synhetic multifunctional undecapeptide (BP100) with lysozyme produces a synergistic effect. We showed a significant increase of the antimicrobial activity against E. amylovora that was associated to the increase of cell membrane damage and to the reduction of cell metabolism. Combination of BP100 with lysozyme reduced the time required to achieve cell death and the minimal inhibitory concentration (MIC), and increased the activity of BP100 in the presence of leaf extracts even when the peptide was applied at low doses. The results obtained in vitro were confirmed in leaf infection bioassays. Conclusions The combination of BP100 with lysozyme showed synergism on the bactericidal activity against E. amylovora and provide the basis for developing better formulations of antibacterial peptides for plant protection.
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Affiliation(s)
- Jordi Cabrefiga
- Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Girona, 17003, Spain
| | - Emilio Montesinos
- Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, Girona, 17003, Spain.
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