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Agrillo B, Porritiello A, Gratino L, Balestrieri M, Proroga YT, Mancusi A, Cozzi L, Vicenza T, Dardano P, Miranda B, Escribá PV, Gogliettino M, Palmieri G. Antimicrobial activity, membrane interaction and structural features of short arginine-rich antimicrobial peptides. Front Microbiol 2023; 14:1244325. [PMID: 37869668 PMCID: PMC10585156 DOI: 10.3389/fmicb.2023.1244325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 09/18/2023] [Indexed: 10/24/2023] Open
Abstract
Antimicrobial activity of many AMPs can be improved by lysine-to-arginine substitution due to a more favourable interaction of arginine guanidinium moiety with bacterial membranes. In a previous work, the structural and functional characterization of an amphipathic antimicrobial peptide named RiLK1, including lysine and arginine as the positively charged amino acids in its sequence, was reported. Specifically, RiLK1 retained its β-sheet structure under a wide range of environmental conditions (temperature, pH, and ionic strength), and exhibited bactericidal activity against Gram-positive and Gram-negative bacteria and fungal pathogens with no evidence of toxicity on mammalian cells. To further elucidate the influence of a lysine-to-arginine replacement on RiLK1 conformational properties, antimicrobial activity and peptide-liposome interaction, a new RiLK1-derivative, named RiLK3, in which the lysine is replaced with an arginine residue, was projected and characterised in comparison with its parental compound. The results evidenced that lysine-to-arginine mutation not only did not assure an improvement in the antimicrobial potency of RiLK1 in terms of bactericidal, virucidal and fungicidal activities, but rather it was completely abolished against the hepatitis A virus. Therefore, RiLK1 exhibited a wide range of antimicrobial activity like other cationic peptides, although the exact mechanisms of action are not completely understood. Moreover, tryptophan fluorescence measurements confirmed that RiLK3 bound to negatively charged lipid vesicles with an affinity lower than that of RiLK1, although no substantial differences from the structural and self-assembled point of view were evidenced. Therefore, our findings imply that antimicrobial efficacy and selectivity are affected by several complex and interrelated factors related to substitution of lysine with arginine, such as their relative proportion and position. In this context, this study could provide a better rationalisation for the optimization of antimicrobial peptide sequences, paving the way for the development of novel AMPs with broad applications.
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Affiliation(s)
| | - Alessandra Porritiello
- National Research Council (IBBR-CNR), Institute of Biosciences and Bioresources, Napoli, Italy
| | - Lorena Gratino
- National Research Council (IBBR-CNR), Institute of Biosciences and Bioresources, Napoli, Italy
| | - Marco Balestrieri
- National Research Council (IBBR-CNR), Institute of Biosciences and Bioresources, Napoli, Italy
| | - Yolande Therese Proroga
- Department of Food Microbiology, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici, Italy
| | - Andrea Mancusi
- Department of Food Microbiology, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici, Italy
| | - Loredana Cozzi
- Department of Food Safety, Nutrition and Veterinary Public Health, Istituto Superiore di Sanità, Rome, Italy
| | - Teresa Vicenza
- Department of Food Safety, Nutrition and Veterinary Public Health, Istituto Superiore di Sanità, Rome, Italy
| | - Principia Dardano
- National Research Council (ISASI-CNR), Institute of Applied Sciences and Intelligent Systems, Napoli, Italy
| | - Bruno Miranda
- National Research Council (ISASI-CNR), Institute of Applied Sciences and Intelligent Systems, Napoli, Italy
| | - Pablo V. Escribá
- Laboratory of Molecular Cell Biomedicine, University of the Balearic Islands, Palma, Spain
- Laminar Pharmaceuticals, Palma, Spain
| | - Marta Gogliettino
- National Research Council (IBBR-CNR), Institute of Biosciences and Bioresources, Napoli, Italy
| | - Gianna Palmieri
- National Research Council (IBBR-CNR), Institute of Biosciences and Bioresources, Napoli, Italy
- Materias S.R.L., Naples, Italy
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Chatterjee R, Chowdhury AR, Nair AV, Hajra D, Kar A, Datey A, Shankar S, Mishra RK, Chandra N, Chakravortty D. Salmonella Typhimurium PgtE is an essential arsenal to defend against the host resident antimicrobial peptides. Microbiol Res 2023; 271:127351. [PMID: 36931126 DOI: 10.1016/j.micres.2023.127351] [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: 11/04/2022] [Revised: 02/19/2023] [Accepted: 03/05/2023] [Indexed: 03/12/2023]
Abstract
Salmonella enterica serovar Typhimurium is a common cause of gastroenteritis in humans and occasionally causes systemic infection. Salmonella's ability to survive and replicate within macrophages is an important characteristic during systemic infection. The outer membrane protease PgtE of S. enterica is a member of the Omptin family of outer membrane aspartate proteases which has well-characterized proteolytic activities in-vitro against a wide range of physiologically relevant substrates. However, no study has been done so far that draws a direct correlation between these in-vitro observations and the biology of the pathogen in-vivo. The main goals of this study were to characterize the pathogenesis-associated functions of pgtE and study its role in the intracellular survival and in-vivo virulence of Salmonella Typhimurium. Our study elucidated a possible role of Salmonella Typhimurium pgtE in combating host antimicrobial peptide- bactericidal/ permeability increasing protein (BPI) to survive in human macrophages. The pgtE-deficient strain of Salmonella showed attenuated proliferation and enhanced colocalization with BPI in U937 and Thp1 cells. In the presence of polymixin B, the attenuated in-vitro survival of STM ΔpgtE suggested a role of PgtE against the antimicrobial peptides. In addition, our study revealed that compared to the wild type Salmonella, the pgtE mutant is replication-deficient in C57BL/6 mice. Further, we showed that PgtE interacts directly with several antimicrobial peptides (AMPs) in the host gut. This gives the pathogen a survival advantage and helps to mount a successful infection in the host.
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Affiliation(s)
- Ritika Chatterjee
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Atish Roy Chowdhury
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Abhilash Vijay Nair
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Dipasree Hajra
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Arpita Kar
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Akshay Datey
- Centre for Biosystems Science and Engineering, Indian Institute of Science, Bangalore, India
| | - Santhosh Shankar
- Department of Biochemistry, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Rishi Kumar Mishra
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Nagasuma Chandra
- Department of Biochemistry, Division of Biological Sciences, Indian Institute of Science, Bangalore, India
| | - Dipshikha Chakravortty
- Department of Microbiology and Cell Biology, Division of Biological Sciences, Indian Institute of Science, Bangalore, India; Adjunct Faculty, Indian Institute of Science Research and Education, Thiruvananthapuram, Kerala, India.
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Ascoët S, Touchard A, Téné N, Lefranc B, Leprince J, Paquet F, Jouvensal L, Barassé V, Treilhou M, Billet A, Bonnafé E. The mechanism underlying toxicity of a venom peptide against insects reveals how ants are master at disrupting membranes. iScience 2023; 26:106157. [PMID: 36879819 PMCID: PMC9985030 DOI: 10.1016/j.isci.2023.106157] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/17/2023] [Accepted: 02/02/2023] [Indexed: 02/10/2023] Open
Abstract
Hymenopterans represent one of the most abundant groups of venomous organisms but remain little explored due to the difficult access to their venom. The development of proteo-transcriptomic allowed us to explore diversity of their toxins offering interesting perspectives to identify new biological active peptides. This study focuses on U9 function, a linear, amphiphilic and polycationic peptide isolated from ant Tetramorium bicarinatum venom. It shares physicochemical properties with M-Tb1a, exhibiting cytotoxic effects through membrane permeabilization. In the present study, we conducted a comparative functional investigation of U9 and M-Tb1a and explored the mechanisms underlying their cytotoxicity against insect cells. After showing that both peptides induced the formation of pores in cell membrane, we demonstrated that U9 induced mitochondrial damage and, at high concentrations, localized into cells and induced caspase activation. This functional investigation highlighted an original mechanism of U9 questioning on potential valorization and endogen activity in T. bicarinatum venom.
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Affiliation(s)
- Steven Ascoët
- BTSB-UR 7417, Université de Toulouse, Institut National Universitaire Jean-François Champollion, Place de Verdun, 81000 Albi, France
| | - Axel Touchard
- CNRS, UMR Ecologie des Forêts de Guyane, AgroParisTech, CIRAD, INRA, Université de Guyane, Université des Antilles, Campus Agronomique, BP316 97310 Kourou, France
| | - Nathan Téné
- BTSB-UR 7417, Université de Toulouse, Institut National Universitaire Jean-François Champollion, Place de Verdun, 81000 Albi, France
| | - Benjamin Lefranc
- Inserm U1239, NorDiC, Laboratoire de Différenciation et Communication Neuroendocrine, Endocrine et Germinale, Université de Rouen-Normandie, 76000 Rouen, France
- Inserm US51, HeRacLeS, Université de Rouen-Normandie, 76000 Rouen, France
| | - Jérôme Leprince
- Inserm U1239, NorDiC, Laboratoire de Différenciation et Communication Neuroendocrine, Endocrine et Germinale, Université de Rouen-Normandie, 76000 Rouen, France
- Inserm US51, HeRacLeS, Université de Rouen-Normandie, 76000 Rouen, France
| | - Françoise Paquet
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Rue Charles Sadron CS-80054, 45071 Orléans, France
| | - Laurence Jouvensal
- Centre de Biophysique Moléculaire, CNRS UPR 4301, Rue Charles Sadron CS-80054, 45071 Orléans, France
| | - Valentine Barassé
- BTSB-UR 7417, Université de Toulouse, Institut National Universitaire Jean-François Champollion, Place de Verdun, 81000 Albi, France
| | - Michel Treilhou
- BTSB-UR 7417, Université de Toulouse, Institut National Universitaire Jean-François Champollion, Place de Verdun, 81000 Albi, France
| | - Arnaud Billet
- BTSB-UR 7417, Université de Toulouse, Institut National Universitaire Jean-François Champollion, Place de Verdun, 81000 Albi, France
| | - Elsa Bonnafé
- BTSB-UR 7417, Université de Toulouse, Institut National Universitaire Jean-François Champollion, Place de Verdun, 81000 Albi, France
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Shen S, Sun Y, Ren F, Blair JMA, Siasat P, Fan S, Hu J, He J. Characteristics of antimicrobial peptide OaBac5mini and its bactericidal mechanism against Escherichia coli. Front Vet Sci 2023; 10:1123054. [PMID: 36908510 PMCID: PMC9995905 DOI: 10.3389/fvets.2023.1123054] [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: 12/13/2022] [Accepted: 02/06/2023] [Indexed: 02/25/2023] Open
Abstract
Introduction Antimicrobial peptides (AMPs) play an important role in defending against the attack of pathogenic microorganisms. Among them, the proline-rich antibacterial peptides (PrAMPs) have been attracting close attention due to their simple structure, strong antibacterial activity, and low cell toxicity. OaBac5mini is an active fragment of the sheep-derived OaBac5 belonging to the PrAMPs family. Methods In this study, the antibacterial activity of OaBac5mini was investigated by testing the MICs against different stains of E. coli and S. aureus as well as the time-kill curve. The bactericidal mechanism was explored by determining the effect of OaBac5mini on the cell membrane. The stability and biosafety were also evaluated. Results The susceptibility test demonstrated that OaBac5mini showed potent antibacterial activity against the multidrug-resistant (MDR) E. coli isolates. It is noticeable that the absence of inner membrane protein SbmA in E. coli ATCC 25922 caused the MIC of OaBac5mini to increase 4-fold, implying OaBac5mini can enter into the cytoplasm via SbmA and plays its antibacterial activity. Moreover, the antibacterial activity of OaBac5mini against E. coli ATCC 25922 was not remarkably affected by the serum salts except for CaCl2 at a physiological concentration, pH, temperature, repeated freeze-thawing and proteases (trypsin < 20 μg/mL, pepsin or proteinase K). Time-kill curve analysis showed OaBac5mini at the concentration of 200 μg/mL (8 × MICs) could effectively kill E. coli ATCC 25922 after co-incubation for 12 h. In addition, OaBac5mini was not hemolytic against rabbit red blood cells and also was not cytotoxic to porcine small intestinal epithelial cells (IPEC-J2). Bioinformatic analysis indicated that OaBac5mini is a linear peptide with 8 net positive charges. Furthermore, OaBac5mini significantly increased the outer membrane permeability and impaired the inner membrane integrity and ultrastructure of E. coli ATCC25922. Conclusion OaBac5mini is a stable and potent PrAMP that kills E. coli by two different modes of action - inhibiting intracellular target(s) and damaging cell membrane.
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Affiliation(s)
- Shanshan Shen
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China.,College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan, China
| | - Yawei Sun
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan, China
| | - Fei Ren
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan, China
| | - Jessica M A Blair
- Institute of Microbiology and Infection, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Pauline Siasat
- Institute of Microbiology and Infection, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Shuaiqi Fan
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan, China
| | - Jianhe Hu
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, Henan, China
| | - Junping He
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi, China
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Cruz GS, dos Santos AT, de Brito EHS, Rádis-Baptista G. Cell-Penetrating Antimicrobial Peptides with Anti-Infective Activity against Intracellular Pathogens. Antibiotics (Basel) 2022; 11:antibiotics11121772. [PMID: 36551429 PMCID: PMC9774436 DOI: 10.3390/antibiotics11121772] [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: 11/15/2022] [Revised: 11/29/2022] [Accepted: 12/01/2022] [Indexed: 12/13/2022] Open
Abstract
Cell-penetrating peptides (CPPs) are natural or engineered peptide sequences with the intrinsic ability to internalize into a diversity of cell types and simultaneously transport hydrophilic molecules and nanomaterials, of which the cellular uptake is often limited. In addition to this primordial activity of cell penetration without membrane disruption, multivalent antimicrobial activity accompanies some CPPs. Antimicrobial peptides (AMPs) with cell-penetrability exert their effect intracellularly, and they are of great interest. CPPs with antimicrobial activity (CPAPs) comprise a particular class of bioactive peptides that arise as promising agents against difficult-to-treat intracellular infections. This short review aims to present the antibacterial, antiparasitic, and antiviral effects of various cell-penetrating antimicrobial peptides currently documented. Examples include the antimicrobial effects of different CPAPs against bacteria that can propagate intracellularly, like Staphylococcus sp., Streptococcus sp., Chlamydia trachomatis, Escherichia coli, Mycobacterium sp., Listeria sp., Salmonella sp. among others. CPAPs with antiviral effects that interfere with the intracellular replication of HIV, hepatitis B, HPV, and herpes virus. Additionally, CPAPs with activity against protozoa of the genera Leishmania, Trypanosoma, and Plasmodium, the etiological agents of Leishmaniasis, Chagas' Disease, and Malaria, respectively. The information provided in this review emphasizes the potential of multivalent CPAPs, with anti-infective properties for application against various intracellular infections. So far, CPAPs bear a promise of druggability for the translational medical use of CPPs alone or in combination with chemotherapeutics. Moreover, CPAPs could be an exciting alternative for pharmaceutical design and treating intracellular infectious diseases.
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Affiliation(s)
- Gabriela Silva Cruz
- Postgraduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Dentistry, and Nursing, Federal University of Ceara, Fortaleza 60416-030, Brazil
- Laboratory of Biochemistry and Biotechnology, Institute for Marine Sciences, Federal University of Ceara, Fortaleza 60165-081, Brazil
| | - Ariane Teixeira dos Santos
- Postgraduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Dentistry, and Nursing, Federal University of Ceara, Fortaleza 60416-030, Brazil
- Laboratory of Biochemistry and Biotechnology, Institute for Marine Sciences, Federal University of Ceara, Fortaleza 60165-081, Brazil
| | - Erika Helena Salles de Brito
- Microbiology Laboratory, Institute of Health Sciences, University of International Integration of the Afro-Brazilian Lusophony, Redenção 62790-970, Brazil
| | - Gandhi Rádis-Baptista
- Postgraduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Dentistry, and Nursing, Federal University of Ceara, Fortaleza 60416-030, Brazil
- Laboratory of Biochemistry and Biotechnology, Institute for Marine Sciences, Federal University of Ceara, Fortaleza 60165-081, Brazil
- Correspondence: ; Tel.: +55-85-3366-7001
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Otazo-Pérez A, Asensio-Calavia P, González-Acosta S, Baca-González V, López MR, Morales-delaNuez A, Pérez de la Lastra JM. Antimicrobial Activity of Cathelicidin-Derived Peptide from the Iberian Mole Talpa occidentalis. Vaccines (Basel) 2022; 10:vaccines10071105. [PMID: 35891269 PMCID: PMC9323388 DOI: 10.3390/vaccines10071105] [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] [Received: 05/28/2022] [Revised: 07/07/2022] [Accepted: 07/08/2022] [Indexed: 02/05/2023] Open
Abstract
The immune systems of all vertebrates contain cathelicidins, a family of antimicrobial peptides. Cathelicidins are a type of innate immune effector that have a number of biological functions, including a well-known direct antibacterial action and immunomodulatory function. In search of new templates for antimicrobial peptide discovery, we have identified and characterized the cathelicidin of the small mammal Talpa occidentalis. We describe the heterogeneity of cathelicidin in the order Eulipotyphla in relation to the Iberian mole and predict its antibacterial activity using bioinformatics tools. In an effort to correlate these findings, we derived the putative active peptide and performed in vitro hemolysis and antimicrobial activity assays, confirming that Iberian mole cathelicidins are antimicrobial. Our results showed that the Iberian mole putative peptide, named To-KL37 (KLFGKVGNLLQKGWQKIKNIGRRIKDFFRNIRPMQEA) has antibacterial and antifungal activity. Understanding the antimicrobial defense of insectivores may help scientists prevent the spread of pathogens to humans. We hope that this study can also provide new, effective antibacterial peptides for future drug development.
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Affiliation(s)
- Andrea Otazo-Pérez
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avda. Astrofísico Francisco Sánchez, 3, 38206 San Cristóbal de la Laguna, Spain; (A.O.-P.); (P.A.-C.); (S.G.-A.); (V.B.-G.); (M.R.L.); (A.M.-d.)
- 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
| | - Patricia Asensio-Calavia
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avda. Astrofísico Francisco Sánchez, 3, 38206 San Cristóbal de la Laguna, Spain; (A.O.-P.); (P.A.-C.); (S.G.-A.); (V.B.-G.); (M.R.L.); (A.M.-d.)
- 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
| | - Sergio González-Acosta
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avda. Astrofísico Francisco Sánchez, 3, 38206 San Cristóbal de la Laguna, Spain; (A.O.-P.); (P.A.-C.); (S.G.-A.); (V.B.-G.); (M.R.L.); (A.M.-d.)
- 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), Avda. Astrofísico Francisco Sánchez, 3, 38206 San Cristóbal de la Laguna, Spain; (A.O.-P.); (P.A.-C.); (S.G.-A.); (V.B.-G.); (M.R.L.); (A.M.-d.)
| | - Manuel R. López
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avda. Astrofísico Francisco Sánchez, 3, 38206 San Cristóbal de la Laguna, Spain; (A.O.-P.); (P.A.-C.); (S.G.-A.); (V.B.-G.); (M.R.L.); (A.M.-d.)
| | - Antonio Morales-delaNuez
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avda. Astrofísico Francisco Sánchez, 3, 38206 San Cristóbal de la Laguna, Spain; (A.O.-P.); (P.A.-C.); (S.G.-A.); (V.B.-G.); (M.R.L.); (A.M.-d.)
| | - José Manuel Pérez de la Lastra
- Biotechnology of Macromolecules Research Group, Instituto de Productos Naturales y Agrobiología (IPNA-CSIC), Avda. Astrofísico Francisco Sánchez, 3, 38206 San Cristóbal de la Laguna, Spain; (A.O.-P.); (P.A.-C.); (S.G.-A.); (V.B.-G.); (M.R.L.); (A.M.-d.)
- Correspondence: ; Tel.: +34-922260112
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