1
|
Peel E, Hogg C, Belov K. Characterisation of defensins across the marsupial family tree. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 158:105207. [PMID: 38797458 DOI: 10.1016/j.dci.2024.105207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2024] [Revised: 05/23/2024] [Accepted: 05/23/2024] [Indexed: 05/29/2024]
Abstract
Defensins are antimicrobial peptides involved in innate immunity, and gene number differs amongst eutherian mammals. Few studies have investigated defensins in marsupials, despite their potential involvement in immunological protection of altricial young. Here we use recently sequenced marsupial genomes and transcriptomes to annotate defensins in nine species across the marsupial family tree. We characterised 35 alpha and 286 beta defensins; gene number differed between species, although Dasyuromorphs had the largest repertoire. Defensins were encoded in three gene clusters within the genome, syntenic to eutherians, and were expressed in the pouch and mammary gland. Marsupial beta defensins were closely related to eutherians, however marsupial alpha defensins were more divergent. We identified marsupial orthologs of human DEFB3 and 6, and several marsupial-specific beta defensin lineages which may have novel functions. Marsupial predicted mature peptides were highly variable in length and sequence composition. We propose candidate peptides for future testing to elucidate the function of marsupial defensins.
Collapse
Affiliation(s)
- Emma Peel
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, New South Wales, 2006, Australia; Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Australia.
| | - Carolyn Hogg
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, New South Wales, 2006, Australia; Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Australia.
| | - Katherine Belov
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, New South Wales, 2006, Australia; Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Australia.
| |
Collapse
|
2
|
Fandiño-Devia E, Santa-González GA, Klaiss-Luna MC, Manrique-Moreno M. Study of the Membrane Activity of the Synthetic Peptide ∆M3 Against Extended-Spectrum β-lactamase Escherichia coli Isolates. J Membr Biol 2024; 257:51-61. [PMID: 38315239 PMCID: PMC11006780 DOI: 10.1007/s00232-024-00306-3] [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: 10/25/2023] [Accepted: 01/03/2024] [Indexed: 02/07/2024]
Abstract
Escherichia coli is the most common microorganism causing nosocomial or community-acquired bacteremia, and extended-spectrum β-lactamase-producing Escherichia coli isolates are identified worldwide with increasing frequency. For this reason, it is necessary to evaluate potential new molecules like antimicrobial peptides. They are recognized for their biological potential which makes them promising candidates in the fight against infections. The goal of this research was to evaluate the potential of the synthetic peptide ΔM3 on several extended-spectrum β-lactamase producing E. coli isolates. The antimicrobial and cytotoxic activity of the peptide was spectrophotometrically determined. Additionally, the capacity of the peptide to interact with the bacterial membrane was monitored by fluorescence microscopy and infrared spectroscopy. The results demonstrated that the synthetic peptide is active against Escherichia coli isolates at concentrations similar to Meropenem. On the other hand, no cytotoxic effect was observed in HaCaT keratinocyte cells even at 10 times the minimal inhibitory concentration. Microscopy results showed a permeabilizing effect of the peptide on the bacteria. The infrared results showed that ΔM3 showed affinity for the lipids of the microorganism's membrane. The results suggest that the ∆M3 interacts with the negatively charged lipids from the E. coli by a disturbing effect on membrane. Finally, the secondary structure experiments of the peptide showed a random structure in solution that did not change during the interaction with the membranes.
Collapse
Affiliation(s)
- Estefanía Fandiño-Devia
- Chemistry Institute, Faculty of Exact and Natural Sciences, University of Antioquia, A.A. 1226, Medellin, 050010, Colombia
| | - Gloria A Santa-González
- Grupo de Investigación e Innovación Biomédica, Facultad de Ciencias Exactas y Aplicadas, Instituto Tecnológico Metropolitano, A.A. 54959, Medellín, 050010, Colombia
| | - Maria C Klaiss-Luna
- Chemistry Institute, Faculty of Exact and Natural Sciences, University of Antioquia, A.A. 1226, Medellin, 050010, Colombia
| | - Marcela Manrique-Moreno
- Chemistry Institute, Faculty of Exact and Natural Sciences, University of Antioquia, A.A. 1226, Medellin, 050010, Colombia.
| |
Collapse
|
3
|
Das S, Konwar BK. Influence of connatural factors in shaping vaginal microflora and ensuring its health. Arch Gynecol Obstet 2024; 309:871-886. [PMID: 37676318 DOI: 10.1007/s00404-023-07200-8] [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: 06/12/2022] [Accepted: 08/21/2023] [Indexed: 09/08/2023]
Abstract
Vaginal canal (VC) is exposed to the external environment affected by habitual factors like hygiene and sexual behaviour as well as physiological factors like puberty, menstrual cycle, pregnancy, child birth and menopause. Healthy VC harbours beneficial microflora supported by vaginal epithelium and cervical fluid. Connatural antimicrobial peptide (AMPs) of female reproductive tract (FRT) conjunctly with these beneficial microbes provide protection from a large number of infectious diseases. Such infections may either be caused by native microbes of the VC or transitory microbes like bacteria or virus which are not a part of VC microflora. This review highlight's the role of hormones, enzymes, innate immunological factors, epithelial cells and vaginal mucus that support beneficial microbes over infectious ones thus, helping to maintain homeostasis in VC and further protect the FRT. We also discuss the prospective use of vaginal probiotics and AMPs against pathogens which can serve as a potential cure for vaginal infections.
Collapse
Affiliation(s)
- Shreaya Das
- Department of MBBT, Tezpur University, Napaam, Assam, 784028, India.
| | - Bolin K Konwar
- Department of MBBT, Tezpur University, Napaam, Assam, 784028, India
| |
Collapse
|
4
|
Jahan I, Kumar SD, Shin SY, Lee CW, Shin SH, Yang S. Multifunctional Properties of BMAP-18 and Its Aliphatic Analog against Drug-Resistant Bacteria. Pharmaceuticals (Basel) 2023; 16:1356. [PMID: 37895827 PMCID: PMC10609797 DOI: 10.3390/ph16101356] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/14/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023] Open
Abstract
BMAP-18, derived from the N-terminal region of bovine myeloid antimicrobial peptide BMAP-27, demonstrates potent antimicrobial activity without cytotoxicity. This study aimed to compare the antibacterial, antibiofilm, and anti-inflammatory properties of BMAP-18, rich in aromatic phenylalanine residues, with its aliphatic analog, BMAP-18-FL. Both aromatic BMAP-18 and aliphatic BMAP-18-FL exhibited equally potent antimicrobial activities against Gram-positive and Gram-negative bacteria, particularly methicillin-resistant Staphylococcus aureus (MRSA) and multidrug-resistant Pseudomonas aeruginosa (MDRPA). Mechanistic investigations employing SYTOX green uptake, DNA binding, and FACScan analysis revealed that both peptides acted by inducing membrane permeabilization and subsequent intracellular targeting. Moreover, both BMAP-18 and BMAP-18-FL effectively prevented biofilm formation and eradicated existing biofilms of MRSA and MDRPA. Notably, BMAP-18-FL displayed a superior anti-inflammatory activity compared to BMAP-18, significantly reducing the expression levels of pro-inflammatory cytokines in lipopolysaccharide-stimulated macrophages. This study emphasizes the similarities and differences in the antimicrobial, antibiofilm, and anti-inflammatory properties between aromatic BMAP-18 and aliphatic BMAP-18-FL, providing valuable insights for the development of multifunctional antimicrobial peptides against drug-resistant bacteria.
Collapse
Affiliation(s)
- Ishrat Jahan
- Department of Biomedical Sciences, School of Medicine, Chosun University, Gwangju 61452, Republic of Korea;
| | - Sukumar Dinesh Kumar
- Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju 61452, Republic of Korea; (S.D.K.); (S.Y.S.)
| | - Song Yub Shin
- Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju 61452, Republic of Korea; (S.D.K.); (S.Y.S.)
| | - Chul Won Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea;
| | - Sung-Heui Shin
- Department of Cellular and Molecular Medicine, School of Medicine, Chosun University, Gwangju 61452, Republic of Korea; (S.D.K.); (S.Y.S.)
| | - Sungtae Yang
- Department of Microbiology, School of Medicine, Chosun University, Gwangju 61452, Republic of Korea
| |
Collapse
|
5
|
Abbasali Z, Pirestani M, Dalimi A, Badri M, Fasihi-Ramandi M. Anti-parasitic activity of a chimeric peptide Cecropin A (2-8)-Melittin (6-9) (CM11) against tachyzoites of Toxoplasma gondii and the BALB/c mouse model of acute toxoplasmosis. Mol Biochem Parasitol 2023; 255:111578. [PMID: 37348706 DOI: 10.1016/j.molbiopara.2023.111578] [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: 01/30/2023] [Revised: 06/18/2023] [Accepted: 06/18/2023] [Indexed: 06/24/2023]
Abstract
Toxoplasmosis is a zoonotic disease that infects most animals, including humans. Pyrimethamine/sulfadiazine is the standard treatment for toxoplasmosis. Although this treatment has been successful, it is often associated with side effects that cannot be tolerated. Therefore, various compounds have been proposed as alternative treatments for toxoplasmosis. Antimicrobial peptides (AMPs) act on various pathogens, from viruses to protozoa. The purpose of the present study was to evaluate the effects of CM11 on in vitro and in vivo Toxoplasma gondii infection. For in vitro experiments, VERO cells were treated with different concentrations of CM11 (1-128 μg/ml) compared to sulfadiazine (SDZ) (0.78-100 μg/ml). MTT and lactate dehydrogenase (LDH) assays evaluated the cell viability and plasma membrane integrity. Then, the inhibitory concentration (IC50) values were determined for treating tachyzoites of T. gondii before or on cells previously infected. Annexin V-FITC/propidium iodide (PI) staining was used to distinguish viable and apoptotic cells. The effect of CM11, SDZ, and a combination of CM11 and SDZ was evaluated in the BALB/c mouse model of acute toxoplasmosis. CM11 was effective on tachyzoites of T. gondii and had a time and dose-dependent manner. The results of the MTT assay showed that the CC50 values of CM11 and SDZ were estimated at 17.4 µg/ml and 62.3 µg/ml after 24-h, respectively. The inhibitory concentration (IC50) of CM11 and SDZ on infected cells was estimated at 1.9 µg/ml and 1.4 µg/ml after 24-h, respectively. The highest rate of apoptosis (early and late) in high concentrations of SDZ and CM11 was determined for tachyzoites (2.13 % and 13.88 %), non-infected VERO cells (6.1 % and 19.76 %), and infected VERO cells (7.45 % and 29.9 %), respectively. Treating infected mice with CM11 and a combination of CM11 and SDZ had increased survival time. Based on the mentioned results, it can be concluded that CM11 has a beneficial effect on tachyzoites of T. gondii in vitro. The result of the mouse model suggests that CM11, either alone or in combination with other chemotherapeutic agents, could be a potential therapeutic for toxoplasmosis. Hence, antimicrobial peptides could be applied as promising anti-toxoplasma agents for treating toxoplasmosis.
Collapse
Affiliation(s)
- Zahra Abbasali
- Department of Parasitology, Faculty of Medical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Majid Pirestani
- Department of Parasitology, Faculty of Medical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Abdolhossein Dalimi
- Department of Parasitology, Faculty of Medical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Milad Badri
- Medical Microbiology Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Mahdi Fasihi-Ramandi
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| |
Collapse
|
6
|
Application of Nano-Inspired Scaffolds-Based Biopolymer Hydrogel for Bone and Periodontal Tissue Regeneration. Polymers (Basel) 2022; 14:polym14183791. [PMID: 36145936 PMCID: PMC9504130 DOI: 10.3390/polym14183791] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/28/2022] [Accepted: 08/30/2022] [Indexed: 11/17/2022] Open
Abstract
This review’s objectives are to provide an overview of the various kinds of biopolymer hydrogels that are currently used for bone tissue and periodontal tissue regeneration, to list the advantages and disadvantages of using them, to assess how well they might be used for nanoscale fabrication and biofunctionalization, and to describe their production processes and processes for functionalization with active biomolecules. They are applied in conjunction with other materials (such as microparticles (MPs) and nanoparticles (NPs)) and other novel techniques to replicate physiological bone generation more faithfully. Enhancing the biocompatibility of hydrogels created from blends of natural and synthetic biopolymers can result in the creation of the best scaffold match to the extracellular matrix (ECM) for bone and periodontal tissue regeneration. Additionally, adding various nanoparticles can increase the scaffold hydrogel stability and provide a number of biological effects. In this review, the research study of polysaccharide hydrogel as a scaffold will be critical in creating valuable materials for effective bone tissue regeneration, with a future impact predicted in repairing bone defects.
Collapse
|
7
|
Luna-Reyes I, Pérez-Hernández EG, Delgado-Coello B, Mas-Oliva J. Peptides as Therapeutic Molecules to Neutralize Gram-negative Bacterial Lipopolysaccharides in Sepsis and Septic Shock. Arch Med Res 2021; 52:798-807. [DOI: 10.1016/j.arcmed.2021.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 08/03/2021] [Indexed: 11/16/2022]
|
8
|
Hemmati F, Rezaee MA, Ebrahimzadeh S, Yousefi L, Nouri R, Kafil HS, Gholizadeh P. Novel Strategies to Combat Bacterial Biofilms. Mol Biotechnol 2021; 63:569-586. [PMID: 33914260 DOI: 10.1007/s12033-021-00325-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 04/09/2021] [Indexed: 12/15/2022]
Abstract
Biofilms are considered as a severe problem in the treatment of bacterial infections; their development causes some noticeable resistance to antibacterial agents. Biofilms are responsible for at least two-thirds of all infections, displaying promoted resistance to classical antibiotic treatments. Therefore, finding new alternative therapeutic approaches is essential for the treatment and inhibition of biofilm-related infections. Therefore, this review aims to describe the potential therapeutic strategies that can inhibit bacterial biofilm development; these include the usage of antiadhesion agents, AMPs, bacteriophages, QSIs, aptamers, NPs and PNAs, which can prevent or eradicate the formation of biofilms. These antibiofilm agents represent a promising therapeutic target in the treatment of biofilm infections and development of a strong capability to interfere with different phases of the biofilm development, including adherence, polysaccharide intercellular adhesion (PIA), quorum sensing molecules and cell-to-cell connection, bacterial aggregation, planktonic bacteria killing and host-immune response modulation. In addition, these components, in combination with antibiotics, can lead to the development of some kind of powerful combined therapy against bacterial biofilm-related infections.
Collapse
Affiliation(s)
- Fatemeh Hemmati
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.,Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Saba Ebrahimzadeh
- Department of Food Science and Technology, Faculty of Agriculture and Natural Resources, Urmia University, Urmia, Iran
| | - Leila Yousefi
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.,Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Roghayeh Nouri
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.,Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Samadi Kafil
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pourya Gholizadeh
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| |
Collapse
|
9
|
Skrzypczak K, Fornal E, Domagała D, Gustaw W, Jabłońska-Ryś E, Sławińska A, Radzki W, Kononiuk A, Waśko A. Use of α-Lactalbumin and Caseinoglycomacropeptide as Biopeptide Precursors and as Functional Additives in Milk Beverages Fermented by L. helveticus. INTERNATIONAL JOURNAL OF FOOD SCIENCE 2021; 2021:8822161. [PMID: 33954168 PMCID: PMC8060077 DOI: 10.1155/2021/8822161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 01/28/2021] [Accepted: 04/01/2021] [Indexed: 01/14/2023]
Abstract
The objective of this investigation was to verify whether biologically active peptides (BAPs) could be obtained from water solutions of α-lactalbumin (α-la) and caseinoglycomacropeptide (CGMP) through an application of the new Lactobacillus helveticus strains. Also, the aim of this research was to determine the influence of addition of the analyzed protein preparations to milk subjected to fermentation by tested bacterial strains on the physicochemical properties of obtained milk beverages. The results indicate that CGMP is a more preferable source for the production of BAPs by the test bacteria than α-la. The antihypertensive and ACE inhibitory effects were the most widespread bioactivities among the detected BAPs. α-la containing fermented milk beverages had higher values of springiness, gumminess, chewiness, and resilience than analogous products containing CGMP, while CGMP-supplemented fermented products exhibited higher values of the hardness parameter. The highest values of hardness (0.416 ± 0.05 N) were recorded for beverages fermented by DSMZ containing the addition of CGMP, while the lowest value of this parameter (0.186 ± 0.06 N) was noted for products containing α-la and fermented by B734. Moreover, CGMP-containing fermented products were characterized by a generally higher value of the proteolysis index (PI) than analogous variants containing α-la. The use of analyzed strains and the selected protein preparations has a positive effect on the texture of fermented milk beverages and might contribute to an increase in the health-promoting potential of such products.
Collapse
Affiliation(s)
- Katarzyna Skrzypczak
- Department of Plant Food Technology and Gastronomy, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, 8 Skromna Street, 20-704 Lublin, Poland
| | - Emilia Fornal
- Department of Pathophysiology, Medical University of Lublin, 8b Jaczewskiego Street, 20-090 Lublin, Poland
| | - Dorota Domagała
- Department of Applied Mathematics and Computer Science, Faculty of Production Engineering, University of Life Sciences in Lublin, 28 Głęboka Street, 20-612 Lublin, Poland
| | - Waldemar Gustaw
- Department of Plant Food Technology and Gastronomy, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, 8 Skromna Street, 20-704 Lublin, Poland
| | - Ewa Jabłońska-Ryś
- Department of Plant Food Technology and Gastronomy, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, 8 Skromna Street, 20-704 Lublin, Poland
| | - Aneta Sławińska
- Department of Plant Food Technology and Gastronomy, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, 8 Skromna Street, 20-704 Lublin, Poland
| | - Wojciech Radzki
- Department of Plant Food Technology and Gastronomy, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, 8 Skromna Street, 20-704 Lublin, Poland
| | - Anna Kononiuk
- Department of Meat Technology and Food Quality, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, 8 Skromna Street, 20-704 Lublin, Poland
| | - Adam Waśko
- Department of Biotechnology, Microbiology and Human Nutrition, Faculty of Food Science and Biotechnology, University of Life Sciences in Lublin, 8 Skromna Street, 20-704 Lublin, Poland
| |
Collapse
|
10
|
Ryu M, Park J, Yeom JH, Joo M, Lee K. Rediscovery of antimicrobial peptides as therapeutic agents. J Microbiol 2021; 59:113-123. [PMID: 33527313 DOI: 10.1007/s12275-021-0649-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 12/23/2020] [Indexed: 02/07/2023]
Abstract
In recent years, the occurrence of antibiotic-resistant pathogens is increasing rapidly. There is growing concern as the development of antibiotics is slower than the increase in the resistance of pathogenic bacteria. Antimicrobial peptides (AMPs) are promising alternatives to antibiotics. Despite their name, which implies their antimicrobial activity, AMPs have recently been rediscovered as compounds having antifungal, antiviral, anticancer, antioxidant, and insecticidal effects. Moreover, many AMPs are relatively safe from toxic side effects and the generation of resistant microorganisms due to their target specificity and complexity of the mechanisms underlying their action. In this review, we summarize the history, classification, and mechanisms of action of AMPs, and provide descriptions of AMPs undergoing clinical trials. We also discuss the obstacles associated with the development of AMPs as therapeutic agents and recent strategies formulated to circumvent these obstacles.
Collapse
Affiliation(s)
- Minkyung Ryu
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Jaeyeong Park
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Ji-Hyun Yeom
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea.
| | - Minju Joo
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea.
| | - Kangseok Lee
- Department of Life Science, Chung-Ang University, Seoul, 06974, Republic of Korea.
| |
Collapse
|
11
|
|
12
|
Browne K, Chakraborty S, Chen R, Willcox MDP, Black DS, Walsh WR, Kumar N. A New Era of Antibiotics: The Clinical Potential of Antimicrobial Peptides. Int J Mol Sci 2020; 21:ijms21197047. [PMID: 32987946 PMCID: PMC7582481 DOI: 10.3390/ijms21197047] [Citation(s) in RCA: 207] [Impact Index Per Article: 51.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 09/22/2020] [Accepted: 09/22/2020] [Indexed: 12/13/2022] Open
Abstract
Antimicrobial resistance is a multifaceted crisis, imposing a serious threat to global health. The traditional antibiotic pipeline has been exhausted, prompting research into alternate antimicrobial strategies. Inspired by nature, antimicrobial peptides are rapidly gaining attention for their clinical potential as they present distinct advantages over traditional antibiotics. Antimicrobial peptides are found in all forms of life and demonstrate a pivotal role in the innate immune system. Many antimicrobial peptides are evolutionarily conserved, with limited propensity for resistance. Additionally, chemical modifications to the peptide backbone can be used to improve biological activity and stability and reduce toxicity. This review details the therapeutic potential of peptide-based antimicrobials, as well as the challenges needed to overcome in order for clinical translation. We explore the proposed mechanisms of activity, design of synthetic biomimics, and how this novel class of antimicrobial compound may address the need for effective antibiotics. Finally, we discuss commercially available peptide-based antimicrobials and antimicrobial peptides in clinical trials.
Collapse
Affiliation(s)
- Katrina Browne
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
| | - Sudip Chakraborty
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
| | - Renxun Chen
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
| | - Mark DP Willcox
- School of Optometry and Vision Science, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia;
| | - David StClair Black
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
- Correspondence: (D.S.B.); (N.K.); Tel.: +612-9385-4657 (D.S.B.); +612-9385-4698 (N.K.)
| | - William R Walsh
- Surgical and Orthopaedic Research Laboratories (SORL), Prince of Wales Clinical School, Prince of Wales Hospital, University of New South Wales (UNSW), Randwick 2031, Australia;
| | - Naresh Kumar
- School of Chemistry, University of New South Wales (UNSW) Sydney, Sydney 2052, Australia; (K.B.); (S.C.); (R.C.)
- Correspondence: (D.S.B.); (N.K.); Tel.: +612-9385-4657 (D.S.B.); +612-9385-4698 (N.K.)
| |
Collapse
|
13
|
Parai D, Dey P, Mukherjee SK. Antimicrobial Peptides: An Approach to Combat Resilient Infections. Curr Drug Discov Technol 2020; 17:542-552. [PMID: 31250760 DOI: 10.2174/1570163816666190620114338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 04/24/2019] [Accepted: 04/24/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND It was apparent by the end of 1980s that the success against the threats of bacterial pathogens on public health was an illusion, with the rapid development of resistant strains more than the discovery of new drugs. As a consequence, the remedial services were in the backfoot position of being on the losing side of this never-ending evolutionary war. The quest for new antibiotics to overcome resistance problems has long been a top research priority for the researchers and the pharmaceutical industry. However, the resistance problems remain unresolved due to the abrupt misuse of antibiotics by common people, which has immensely worsened the scenario by disseminating antibiotic-resistant bacterial strains around the world. OBJECTIVE Thus, immediate action is needed to measure emerging and re-emerging microbial diseases having new resistance mechanisms and to manage their rapid spread among the common public by means of novel alternative metabolites. CONCLUSION Antimicrobial Peptides (AMPs) are short, cationic peptides evolved in a wide range of living organisms and serve as the essential part of the host innate immunity. For humans, these effector molecules either can directly kill the foreign microbes or modulate the host immune systems so that the human body could develop some resistance against the microbial infections. In this review, we discuss their history, structural classifications, modes of action, and explain their biological roles as anti-infective agents. We also scrutinize their clinical potentiality, current limitations in various developmental stages and strategies to overcome for their successful clinical applications.
Collapse
Affiliation(s)
- Debaprasad Parai
- Department of Microbiology, University of Kalyani, Kalyani, WB, India
| | - Pia Dey
- Department of Microbiology, University of Kalyani, Kalyani, WB, India
| | - Samir K Mukherjee
- Department of Microbiology, University of Kalyani, Kalyani, WB, India
| |
Collapse
|
14
|
Novel Synthetic, Host-defense Peptide Protects Against Organ Injury/Dysfunction in a Rat Model of Severe Hemorrhagic Shock. Ann Surg 2019; 268:348-356. [PMID: 28288070 DOI: 10.1097/sla.0000000000002186] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE To evaluate (1) levels of the host-defense/antimicrobial peptide LL-37 in patients with trauma and hemorrhagic shock (HS) and (2) the effects of a synthetic host-defense peptide; Pep19-4LF on multiple organ failure (MOF) associated with HS. BACKGROUND HS is a common cause of death in severely injured patients. There is no specific therapy that reduces HS-associated MOF. METHODS (1) LL-37 was measured in 47 trauma/HS patients admitted to an urban major trauma center. (2) Male Wistar rats were submitted to HS (90 min, target mean arterial pressure: 27-32 mm Hg) or sham operation. Rats were treated with Pep19-4LF [66 (n = 8) or 333 μg/kg · h (n = 8)] or vehicle (n = 12) for 4 hours following resuscitation. RESULTS Plasma LL-37 was 12-fold higher in patients with trauma/HS compared to healthy volunteers. HS rats treated with Pep19-4LF (high dose) had a higher mean arterial pressure at the end of the 4-hour resuscitation period (79 ± 4 vs 54 ± 5 mm Hg) and less renal dysfunction, liver injury, and lung inflammation than HS rats treated with vehicle. Pep19-4LF enhanced (kidney/liver) the phosphorylation of (1) protein kinase B and (2) endothelial nitric oxide synthase. Pep19-4LF attenuated the HS-induced (1) translocation of p65 from cytosol to nucleus, (2) phosphorylation of IκB kinase on Ser, and (3) phosphorylation of IκBα on Ser resulting in inhibition of nuclear factor kappa B and formation of proinflammatory cytokines. Pep19-4LF prevented the release of tumor necrosis factor alpha caused by heparan sulfate in human mononuclear cells by binding to this damage-associated molecular pattern. CONCLUSIONS Trauma-associated HS results in release of LL-37. The synthetic host-defense/antimicrobial peptide Pep19-4LF attenuates the organ injury/dysfunction associated with HS.
Collapse
|
15
|
Ozbek-Celik B, Damar-Celik D, Mataraci-Kara E, Bozkurt-Guzel C, Savage PB. Comparative In Vitro Activities of First and Second-Generation Ceragenins Alone and in Combination with Antibiotics Against Multidrug-Resistant Klebsiella pneumoniae Strains. Antibiotics (Basel) 2019; 8:antibiotics8030130. [PMID: 31461867 PMCID: PMC6784107 DOI: 10.3390/antibiotics8030130] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/16/2019] [Accepted: 08/23/2019] [Indexed: 12/16/2022] Open
Abstract
Objectives: The ceragenins, or CSAs, were designed to mimic the activities of antimicrobial peptides and represent a new class of antimicrobial agent. The aim of this study was to comparatively investigate the antimicrobial activities of first/second generation ceragenins and various antibiotics against multidrug-resistant (MDR) Klebsiella pneumoniae, including colistin-resistant bacteria. Also, the synergistic effects of two ceragenins with colistin or meropenem were investigated with six K. pneumoniae strains presenting different resistant patterns. Methods: Minimal inhibition concentrations (MICs) were determined by the microdilution method according to the CLSI. Antibiotic combination studies were evaluated by the time–kill curve method. Results: MIC50 and MIC90 values of tested ceragenins ranged from 8 to 32 mg/L and 16 to 128 mg/L. Overall, among the ceragenins tested, CSA-131 showed the lowest MIC50 and MIC90 values against all microorganisms. The MICs of the ceragenins were similar or better than tested antibiotics, except for colistin. Synergistic activities of CSA-131 in combination with colistin was found for strains both at 1× MIC and 4× MIC. No antagonism was observed with any combination. Conclusions: First-generation ceragenins CSA-13 and CSA-44 and second-generation ceragenins CSA-131, CSA-138 and CSA-142 have significant antimicrobial effects on MDR K. pneumoniae. Mechanisms allowing resistance to clinical comparator antibiotics like colistin did not impact the activity of ceragenins. These results suggest that ceragenins may play a role in treating infections that are resistant to known antibiotics.
Collapse
Affiliation(s)
- Berna Ozbek-Celik
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Istanbul University, 34116 Beyazit-Istanbul, Turkey.
| | - Damla Damar-Celik
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Istanbul University, 34116 Beyazit-Istanbul, Turkey
| | - Emel Mataraci-Kara
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Istanbul University, 34116 Beyazit-Istanbul, Turkey
| | - Cagla Bozkurt-Guzel
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Istanbul University, 34116 Beyazit-Istanbul, Turkey
| | - Paul B Savage
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA
| |
Collapse
|
16
|
Basic and recent advances in marine antihypertensive peptides: Production, structure-activity relationship and bioavailability. Trends Food Sci Technol 2019. [DOI: 10.1016/j.tifs.2019.04.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|
17
|
Spicer SK, Subramani A, Aguila AL, Green RM, McClelland EE, Bicker KL. Toward a clinical antifungal peptoid: Investigations into the therapeutic potential of AEC5. Biopolymers 2019; 110:e23276. [PMID: 30938841 PMCID: PMC6660985 DOI: 10.1002/bip.23276] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 03/13/2019] [Accepted: 03/18/2019] [Indexed: 01/08/2023]
Abstract
Cryptococcus neoformans is a fungal pathogen that causes cryptococcal meningitis in immunocompromised individuals. Existing antifungal treatment plans have high mammalian toxicity and increasing drug resistance, demonstrating the dire need for new, nontoxic therapeutics. Antimicrobial peptoids are one alternative to combat this issue. Our lab has recently identified a tripeptoid, AEC5, with promising efficacy and selectivity against C. neoformans. Here, we report studies into the broad-spectrum efficacy, killing kinetics, mechanism of action, in vivo half-life, and subchronic toxicity of this compound. Most notably, these studies have demonstrated that AEC5 rapidly reduces fungal burden, killing all viable fungi within 3 hours. Additionally, AEC5 has an in vivo half-life of 20+ hours and no observable in vivo toxicity following 28 days of daily injections. This research represents an important step in the characterization of AEC5 as a practical treatment option against C. neoformans infections.
Collapse
Affiliation(s)
- Sabrina K. Spicer
- Middle Tennessee State University, Department of Chemistry, 1301 E. Main St., Murfreesboro, TN 37132
| | - Aarthi Subramani
- Middle Tennessee State University, Department of Biology, 1301 E. Main St., Murfreesboro, TN 37132
| | - Angelica L. Aguila
- Middle Tennessee State University, Department of Chemistry, 1301 E. Main St., Murfreesboro, TN 37132
| | - R. Madison Green
- Middle Tennessee State University, Department of Chemistry, 1301 E. Main St., Murfreesboro, TN 37132
| | - Erin E. McClelland
- Middle Tennessee State University, Department of Biology, 1301 E. Main St., Murfreesboro, TN 37132
| | - Kevin L. Bicker
- Middle Tennessee State University, Department of Chemistry, 1301 E. Main St., Murfreesboro, TN 37132
| |
Collapse
|
18
|
Middleton MP, Armstrong SA, Bicker KL. Improved potency and reduced toxicity of the antifungal peptoid AEC5 through submonomer modification. Bioorg Med Chem Lett 2018; 28:3514-3519. [PMID: 30297282 DOI: 10.1016/j.bmcl.2018.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/23/2018] [Accepted: 10/01/2018] [Indexed: 12/17/2022]
Abstract
As proteolytically stable peptidomimetics, peptoids could serve as antifungal agents to supplement a therapeutic field wrought with toxicity issues. We report the improvement of an antifungal peptoid, AEC5, through an iterative structure-activity relationship study. A sarcosine scan was used to first identify the most pharmacophorically important peptoid building blocks of AEC5, followed by sequential optimization of each building block. The optimized antifungal peptoid from this study, β-5, has improved potency towards Cryptococcus neoformans and decreased toxicity towards mammalian cells. For example, the selectivity ratio for C. neoformans over mammalian fibroblasts was improved from 8 for AEC5 to 37 for β-5.
Collapse
Affiliation(s)
- Madyson P Middleton
- Middle Tennessee State University, Department of Chemistry, 1301 E. Main St., Murfreesboro, TN 37132, United States
| | - Scott A Armstrong
- Middle Tennessee State University, Department of Chemistry, 1301 E. Main St., Murfreesboro, TN 37132, United States
| | - Kevin L Bicker
- Middle Tennessee State University, Department of Chemistry, 1301 E. Main St., Murfreesboro, TN 37132, United States.
| |
Collapse
|
19
|
Omardien S, Drijfhout JW, Zaat SA, Brul S. Cationic Amphipathic Antimicrobial Peptides Perturb the Inner Membrane of Germinated Spores Thus Inhibiting Their Outgrowth. Front Microbiol 2018; 9:2277. [PMID: 30319583 PMCID: PMC6168669 DOI: 10.3389/fmicb.2018.02277] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 09/06/2018] [Indexed: 11/13/2022] Open
Abstract
The mode of action of four cationic amphipathic antimicrobial peptides (AMPs) was evaluated against the non-pathogenic, Gram-positive, spore-forming bacterium, Bacillus subtilis. The AMPs were TC19, TC84, BP2, and the lantibiotic Nisin A. TC19 and TC84 were derived from the human thrombocidin-1. Bactericidal peptide 2 (BP2) was derived from the human bactericidal permeability increasing protein (BPI). We employed structured illumination microscopy (SIM), fluorescence microscopy, Alexa 488-labeled TC84, B. subtilis mutants producing proteins fused to the green fluorescent protein (GFP) and single-cell live imaging to determine the effects of the peptides against spores. TC19, TC84, BP2, and Nisin A showed to be bactericidal against germinated spores by perturbing the inner membrane, thus preventing outgrowth to vegetative cells. Single cell live imaging showed that the AMPs do not affect the germination process, but the burst time and subsequent generation time of vegetative cells. Alexa 488-labeled TC84 suggested that the TC84 might be binding to the dormant spore-coat. Therefore, dormant spores were also pre-coated with the AMPs and cultured on AMP-free culture medium during single-cell live imaging. Pre-coating of the spores with TC19, TC84, and BP2 had no effect on the germination process, and variably affected the burst time and generation time. However, the percentage of spores that burst and grew out into vegetative cells was drastically lower when pre-coated with Nisin A, suggesting a novel application potential of this lantibiotic peptide against spores. Our findings contribute to the understanding of AMPs and show the potential of AMPs as eventual therapeutic agents against spore-forming bacteria.
Collapse
Affiliation(s)
- Soraya Omardien
- Swammerdam Institute for Life Sciences, Department of Molecular Biology and Microbial Food Safety, University of Amsterdam, Amsterdam, Netherlands
| | | | - Sebastian A Zaat
- Department of Medical Microbiology, Centre for Infection and Immunity Amsterdam (CINIMA), Academic Medical Centre, University of Amsterdam, Amsterdam, Netherlands
| | - Stanley Brul
- Swammerdam Institute for Life Sciences, Department of Molecular Biology and Microbial Food Safety, University of Amsterdam, Amsterdam, Netherlands
| |
Collapse
|
20
|
A Novel Class of Cationic and Non-Peptidic Small Molecules as Hits for the Development of Antimicrobial Agents. Molecules 2018; 23:molecules23071513. [PMID: 29932141 PMCID: PMC6099707 DOI: 10.3390/molecules23071513] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 06/19/2018] [Accepted: 06/20/2018] [Indexed: 11/17/2022] Open
Abstract
Cationic and non-peptide small molecules containing a total of six positive charges arranged on one side and a long aliphatic tail on the other have been synthesized and tested against Gram-positive and Gram-negative bacteria. The positive charges have been contributed by two aminophenol residues. These molecules have showed remarkable antimicrobial activity against Gram-positive bacteria including multidrug-resistant strains. Our structure⁻activity relationship studies demonstrated the importance of the length and flexibility of the hydrophobic tail for the antimicrobial activity. Importantly, these compounds are non-toxic to eukaryotic cells at the concentration affecting growth in bacteria, reflecting an acceptable margin of safety. The small size and easy synthetic accessibility of our molecules can be of interest for the further development of novel antimicrobials against Gram-positive bacterial pathogens, including multidrug-resistant strains.
Collapse
|
21
|
Lau QY, Li J, Sani MA, Sinha S, Li Y, Ng FM, Kang C, Bhattacharjya S, Separovic F, Verma C, Chia CSB. Elucidating the bactericidal mechanism of action of the linear antimicrobial tetrapeptide BRBR-NH 2. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:1517-1527. [PMID: 29758185 DOI: 10.1016/j.bbamem.2018.05.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 05/09/2018] [Accepted: 05/09/2018] [Indexed: 12/22/2022]
Abstract
Linear antimicrobial peptides, with their rapid bactericidal mode of action, are well-suited for development as topical antibacterial drugs. We recently designed a synthetic linear 4-residue peptide, BRBR-NH2, with potent bactericidal activity against Staphylococcus aureus (MIC 6.25 μM), the main causative pathogen of human skin infections with an unknown mechanism of action. Herein, we describe a series of experiments conducted to gain further insights into its mechanism of action involving electron microscopy, artificial membrane dye leakage, solution- and solid-state NMR spectroscopy followed by molecular dynamics simulations. Experimental results point towards a SMART (Soft Membranes Adapt and Respond, also Transiently) mechanism of action, suggesting that the peptide can be developed as a topical antibacterial agent for treating drug-resistant Staphylococcus aureus infections.
Collapse
Affiliation(s)
- Qiu Ying Lau
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore 138669, Singapore
| | - Jianguo Li
- Bioinformatics Institute, Agency for Science, Technology and Research (A*STAR), 30 Biopolis Street, Matrix #07-01, Singapore 138671, Singapore; Singapore Eye Research Institute, The Academia, 20 College Road, Singapore 168751, Singapore
| | - Marc-Antoine Sani
- School of Chemistry, Bio21 Institute, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Sheetal Sinha
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore; Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore; Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Yan Li
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore 138669, Singapore
| | - Fui Mee Ng
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore 138669, Singapore
| | - CongBao Kang
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore 138669, Singapore
| | - Surajit Bhattacharjya
- School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Frances Separovic
- School of Chemistry, Bio21 Institute, The University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Chandra Verma
- Bioinformatics Institute, Agency for Science, Technology and Research (A*STAR), 30 Biopolis Street, Matrix #07-01, Singapore 138671, Singapore; School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore; Department of Biological Sciences, National University of Singapore, 16 Science Drive 4, Singapore 117558, Singapore
| | - Cheng San Brian Chia
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore 138669, Singapore.
| |
Collapse
|
22
|
Secretion expression of human neutrophil peptide 1 (HNP1) in Pichia pastoris and its functional analysis against antibiotic-resistant Helicobacter pylori. Appl Microbiol Biotechnol 2018; 102:4817-4827. [DOI: 10.1007/s00253-018-8982-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/22/2018] [Accepted: 04/02/2018] [Indexed: 12/22/2022]
|
23
|
Conjugates and nano-delivery of antimicrobial peptides for enhancing therapeutic activity. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.12.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
24
|
Ng SMS, Yap JM, Lau QY, Ng FM, Ong EHQ, Barkham T, Teo JWP, Alfatah M, Kong KW, Hoon S, Arumugam P, Hill J, Brian Chia CS. Structure-activity relationship studies of ultra-short peptides with potent activities against fluconazole-resistant Candida albicans. Eur J Med Chem 2018; 150:479-490. [PMID: 29549835 DOI: 10.1016/j.ejmech.2018.03.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 03/02/2018] [Accepted: 03/08/2018] [Indexed: 11/30/2022]
Abstract
Vulvovaginal candidiasis (VVC) is a genital fungal infection afflicting approximately 75% of women globally and is primarily caused by the yeast Candida albicans. The extensive use of fluconazole, the first-line antifungal drug of choice, has led to the emergence of fluconazole-resistant C. albicans, creating a global clinical concern. This, coupled to the lack of new antifungal drugs entering the market over the past decade, has made it imperative for the introduction of new antifungal drug classes. Peptides with antifungal properties are deemed potential drug candidates due to their rapid membrane-disrupting mechanism of action. By specifically targeting and rapidly disrupting fungal membranes, they reduce the chances of resistance development and treatment duration. In a previous screening campaign involving an antimicrobial peptide library, we identified an octapeptide (IKIKIKIK-NH2) with potent activity against C. albicans. Herein, we report a structure-activity relationship study on this peptide with the aim of designing a more potent peptide for further development. The lead peptide was then tested against a panel of fluconazole-resistant C. albicans, subjected to a fungicidal/static determination assay, a human dermal fibroblast viability assay and a homozygous profiling assay to gain insights into its mechanism of action and potential for further development as a topical antifungal agent.
Collapse
Affiliation(s)
- Siew Mei Samantha Ng
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore, 138669, Singapore
| | - Jia Mao Yap
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore, 138669, Singapore
| | - Qiu Ying Lau
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore, 138669, Singapore
| | - Fui Mee Ng
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore, 138669, Singapore
| | - Esther Hong Qian Ong
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore, 138669, Singapore
| | - Timothy Barkham
- Department of Laboratory Medicine, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, 308433, Singapore
| | - Jeanette Woon Pei Teo
- Department of Laboratory Medicine, National University Hospital, 5 Lower Kent Ridge Road, Singapore, 119074, Singapore
| | - Mohammad Alfatah
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore
| | - Kiat Whye Kong
- Molecular Engineering Lab, 61 Biopolis Drive, #03-12, Proteos, 138673, Singapore
| | - Shawn Hoon
- Molecular Engineering Lab, 61 Biopolis Drive, #03-12, Proteos, 138673, Singapore
| | - Prakash Arumugam
- Bioinformatics Institute, 30 Biopolis Street, #07-01, Matrix, 138671, Singapore
| | - Jeffrey Hill
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore, 138669, Singapore
| | - Cheng San Brian Chia
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, Singapore, 138669, Singapore.
| |
Collapse
|
25
|
Savini F, Bobone S, Roversi D, Mangoni ML, Stella L. From liposomes to cells: Filling the gap between physicochemical and microbiological studies of the activity and selectivity of host‐defense peptides. Pept Sci (Hoboken) 2018. [DOI: 10.1002/pep2.24041] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Filippo Savini
- Department of Chemical Science and TechnologiesUniversity of Rome Tor VergataRome00133 Italy
| | - Sara Bobone
- Department of Chemical Science and TechnologiesUniversity of Rome Tor VergataRome00133 Italy
| | - Daniela Roversi
- Department of Chemical Science and TechnologiesUniversity of Rome Tor VergataRome00133 Italy
| | - Maria Luisa Mangoni
- Department of Biochemical Sciences, Laboratory affiliated to Pasteur Italia‐Fondazione Cenci BolognettiSapienza University of RomeRome, via degli Apuli9‐00185 Italy
| | - Lorenzo Stella
- Department of Chemical Science and TechnologiesUniversity of Rome Tor VergataRome00133 Italy
| |
Collapse
|
26
|
Pachón-Ibáñez ME, Smani Y, Pachón J, Sánchez-Céspedes J. Perspectives for clinical use of engineered human host defense antimicrobial peptides. FEMS Microbiol Rev 2018; 41:323-342. [PMID: 28521337 PMCID: PMC5435762 DOI: 10.1093/femsre/fux012] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/28/2017] [Indexed: 12/15/2022] Open
Abstract
Infectious diseases caused by bacteria, viruses or fungi are among the leading causes of death worldwide. The emergence of drug-resistance mechanisms, especially among bacteria, threatens the efficacy of all current antimicrobial agents, some of them already ineffective. As a result, there is an urgent need for new antimicrobial drugs. Host defense antimicrobial peptides (HDPs) are natural occurring and well-conserved peptides of innate immunity, broadly active against Gram-negative and Gram-positive bacteria, viruses and fungi. They also are able to exert immunomodulatory and adjuvant functions by acting as chemotactic for immune cells, and inducing cytokines and chemokines secretion. Moreover, they show low propensity to elicit microbial adaptation, probably because of their non-specific mechanism of action, and are able to neutralize exotoxins and endotoxins. HDPs have the potential to be a great source of novel antimicrobial agents. The goal of this review is to provide an overview of the advances made in the development of human defensins as well as the cathelicidin LL-37 and their derivatives as antimicrobial agents against bacteria, viruses and fungi for clinical use.
Collapse
Affiliation(s)
- María Eugenia Pachón-Ibáñez
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville
| | - Younes Smani
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville
| | - Jerónimo Pachón
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville.,Department of Medicine, University of Seville, Seville, Spain
| | - Javier Sánchez-Céspedes
- Clinical Unit of Infectious Diseases, Microbiology and Preventive Medicine, Institute of Biomedicine of Seville (IBiS), University Hospital Virgen del Rocío/CSIC/University of Seville.,Department of Medicine, University of Seville, Seville, Spain
| |
Collapse
|
27
|
Lee J, Kang D, Choi J, Huang W, Wadman M, Barron AE, Seo J. Effect of side chain hydrophobicity and cationic charge on antimicrobial activity and cytotoxicity of helical peptoids. Bioorg Med Chem Lett 2018; 28:170-173. [DOI: 10.1016/j.bmcl.2017.11.034] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 11/22/2017] [Indexed: 11/24/2022]
|
28
|
Synergistic Efficacy of Aedes aegypti Antimicrobial Peptide Cecropin A2 and Tetracycline against Pseudomonas aeruginosa. Antimicrob Agents Chemother 2017; 61:AAC.00686-17. [PMID: 28483966 DOI: 10.1128/aac.00686-17] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2017] [Accepted: 04/29/2017] [Indexed: 12/21/2022] Open
Abstract
The increasing prevalence of antibiotic resistance has created an urgent need for alternative drugs with new mechanisms of action. Antimicrobial peptides (AMPs) are promising candidates that could address the spread of multidrug-resistant bacteria, either alone or in combination with conventional antibiotics. We studied the antimicrobial efficacy and bactericidal mechanism of cecropin A2, a 36-residue α-helical cationic peptide derived from Aedes aegypti cecropin A, focusing on the common pathogen Pseudomonas aeruginosa The peptide showed little hemolytic activity and toxicity toward mammalian cells, and the MICs against most clinical P. aeruginosa isolates were 32 to 64 μg/ml, and its MICs versus other Gram-negative bacteria were 2 to 32 μg/ml. Importantly, cecropin A2 demonstrated synergistic activity against P. aeruginosa when combined with tetracycline, reducing the MICs of both agents by 8-fold. The combination was also effective in vivo in the P. aeruginosa/Galleria mellonella model (P < 0.001). We found that cecropin A2 bound to P. aeruginosa lipopolysaccharides, permeabilized the membrane, and interacted with the bacterial genomic DNA, thus facilitating the translocation of tetracycline into the cytoplasm. In summary, the combination of cecropin A2 and tetracycline demonstrated synergistic antibacterial activity against P. aeruginosain vitro and in vivo, offering an alternative approach for the treatment of P. aeruginosa infections.
Collapse
|
29
|
Tan T, Wu D, Li W, Zheng X, Li W, Shan A. High Specific Selectivity and Membrane-Active Mechanism of Synthetic Cationic Hybrid Antimicrobial Peptides Based on the Peptide FV7. Int J Mol Sci 2017; 18:E339. [PMID: 28178190 PMCID: PMC5343874 DOI: 10.3390/ijms18020339] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 01/29/2017] [Accepted: 02/01/2017] [Indexed: 01/08/2023] Open
Abstract
Hybrid peptides integrating different functional domains of peptides have many advantages, such as remarkable antimicrobial activity, lower hemolysis and ideal cell selectivity, compared with natural antimicrobial peptides. FV7 (FRIRVRV-NH₂), a consensus amphiphilic sequence was identified as being analogous to host defense peptides. In this study, we designed a series of hybrid peptides FV7-LL-37 (17-29) (FV-LL), FV7-magainin 2 (9-21) (FV-MA) and FV7-cecropin A (1-8) (FV-CE) by combining the FV7 sequence with the small functional sequences LL-37 (17-29) (LL), magainin 2 (9-21) (MA) and cecropin A (1-8) (CE) which all come from well-described natural peptides. The results demonstrated that the synthetic hybrid peptides, in particular FV-LL, had potent antibacterial activities over a wide range of Gram-negative and Gram-positive bacteria with lower hemolytic activity than other peptides. Furthermore, fluorescent spectroscopy indicated that the hybrid peptide FV-LL exhibited marked membrane destruction by inducing outer and inner bacterial membrane permeabilization, while scanning electron microscopy (SEM) and transmission electron microscopy (TEM) demonstrated that FV-LL damaged membrane integrity by disrupting the bacterial membrane. Inhibiting biofilm formation assays also showed that FV-LL had similar anti-biofilm activity compared with the functional peptide sequence FV7. Synthetic cationic hybrid peptides based on FV7 could provide new models for combining different functional domains and demonstrate effective avenues to screen for novel antimicrobial agents.
Collapse
Affiliation(s)
- Tingting Tan
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China.
| | - Di Wu
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China.
| | - Weizhong Li
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China.
| | - Xin Zheng
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China.
| | - Weifen Li
- Institute of Animal Nutrition and Feed Science, College of Animal Science, Zhejiang University, Hangzhou 310058, China.
| | - Anshan Shan
- Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China.
| |
Collapse
|
30
|
Screening for a Potent Antibacterial Peptide to Treat Mupirocin-Resistant MRSA Skin Infections. Int J Pept Res Ther 2017. [DOI: 10.1007/s10989-017-9580-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
31
|
Savini F, Luca V, Bocedi A, Massoud R, Park Y, Mangoni ML, Stella L. Cell-Density Dependence of Host-Defense Peptide Activity and Selectivity in the Presence of Host Cells. ACS Chem Biol 2017; 12:52-56. [PMID: 27935673 DOI: 10.1021/acschembio.6b00910] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Host-defense peptides (HDPs) are promising compounds against multidrug-resistant microbes. In vitro, their bactericidal and toxic concentrations are significantly different, but this might be due to the use of separate assays, with different cell densities. For experiments with a single cell type, the cell-density dependence of the active concentration of the DNS-PMAP23 HDP could be predicted based on the water/cell-membrane partition equilibrium and exhibited a lower bound at low cell counts. On the basis of these data, in the simultaneous presence of both bacteria and an excess of human cells, one would expect no significant toxicity, but also inhibition of the bactericidal activity due to peptide sequestration by host cells. However, this inhibition did not take place in assays with mixed cell populations, showing that for the HDP esculentin-1a(1-21)NH2, a range of bactericidal, nontoxic concentrations exists and confirming the effective selectivity of HDPs. Mixed-cell assays might be necessary to effectively asses HDP selectivity.
Collapse
Affiliation(s)
| | - Vincenzo Luca
- Department
of Biochemical Sciences “A. Rossi Fanelli”, Istituto
Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00185 Rome, Italy
| | | | | | - Yoonkyung Park
- Department
of Biotechnology, Chosun University, 501−759 Gwangju, Korea
| | - Maria Luisa Mangoni
- Department
of Biochemical Sciences “A. Rossi Fanelli”, Istituto
Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, 00185 Rome, Italy
| | | |
Collapse
|
32
|
Ng SMS, Yap YYA, Cheong JWD, Ng FM, Lau QY, Barkham T, Teo JWP, Hill J, Chia CSB. Antifungal peptides: a potential new class of antifungals for treating vulvovaginal candidiasis caused by fluconazole-resistant Candida albicans. J Pept Sci 2017; 23:215-221. [PMID: 28105725 DOI: 10.1002/psc.2970] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2016] [Revised: 12/14/2016] [Accepted: 12/23/2016] [Indexed: 11/06/2022]
Abstract
Vulvovaginal candidiasis/candidosis is a common fungal infection afflicting approximately 75% of women globally caused primarily by the yeast Candida albicans. Fluconazole is widely regarded as the antifungal drug of choice since its introduction in 1990 due to its high oral bioavailability, convenient dosing regimen and favourable safety profile. However, its widespread use has led to the emergence of fluconazole-resistant C. albicans, posing a universal clinical concern. Coupled to the dearth of new antifungal drugs entering the market, it is imperative to introduce new drug classes to counter this threat. Antimicrobial peptides (AMPs) are potential candidates due to their membrane-disrupting mechanism of action. By specifically targeting fungal membranes and being rapidly fungicidal, they can reduce the chances of resistance development and treatment duration. Towards this goal, we conducted a head-to-head comparison of 61 short linear AMPs from the literature to identify the peptide with the most potent activity against fluconazole-resistant C. albicans. The 11-residue peptide, P11-6, was identified and assayed against a panel of clinical C. albicans isolates followed by fungicidal/static determination and a time-kill assay to gauge its potential for further drug development. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Siew Mei Samantha Ng
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, 138669, Singapore
| | - Yi Yong Alvin Yap
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, 138669, Singapore
| | - Jin Wei Darryl Cheong
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, 138669, Singapore
| | - Fui Mee Ng
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, 138669, Singapore
| | - Qiu Ying Lau
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, 138669, Singapore
| | - Timothy Barkham
- Department of Laboratory Medicine, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, 308433, Singapore
| | - Jeanette Woon Pei Teo
- Department of Laboratory Medicine, National University Hospital, 5 Lower Kent Ridge Road, 119074, Singapore
| | - Jeffrey Hill
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, 138669, Singapore
| | - Cheng San Brian Chia
- Experimental Therapeutics Centre, Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, Nanos #03-01, 138669, Singapore
| |
Collapse
|
33
|
Chettri JK, Mehrdana F, Hansen EB, Ebbensgaard A, Overgaard MT, Lauritsen AH, Dalsgaard I, Buchmann K. Antimicrobial peptide CAP18 and its effect on Yersinia ruckeri infections in rainbow trout Oncorhynchus mykiss (Walbaum): comparing administration by injection and oral routes. JOURNAL OF FISH DISEASES 2017; 40:97-104. [PMID: 27334068 DOI: 10.1111/jfd.12497] [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: 10/23/2015] [Revised: 03/30/2016] [Accepted: 03/30/2016] [Indexed: 06/06/2023]
Abstract
The antimicrobial peptide CAP18 has been demonstrated to have a strong in vitro bactericidal effect on Yersinia ruckeri, but its activity in vivo has not been described. In this work, we investigated whether CAP18 protects rainbow trout Oncorhynchus mykiss (Walbaum) against enteric red mouth disease caused by this pathogen either following i.p. injection or by oral administration (in feed). It was found that injection of CAP18 into juvenile rainbow trout before exposure to Y. ruckeri was associated with lowered mortality compared to non-medicated fish although it was less effective than the conventional antibiotic oxolinic acid. Oral administration of CAP18 to trout did not prevent infection. The proteolytic effect of secretions on the peptide CAP18 in the fish gastrointestinal tract is suggested to account for the inferior effect of oral administration.
Collapse
Affiliation(s)
- J K Chettri
- Faculty of Health and Medical Sciences, Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg C, Denmark
| | - F Mehrdana
- Faculty of Health and Medical Sciences, Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg C, Denmark
| | - E B Hansen
- National Food Institute, Technical University of Denmark, Søborg, Denmark
| | - A Ebbensgaard
- National Food Institute, Technical University of Denmark, Lyngby, Denmark
| | - M T Overgaard
- Department of Chemistry and Bioscience, Aalborg University, Aalborg, Denmark
| | | | - I Dalsgaard
- National Veterinary Institute, Technical University of Denmark, Copenhagen, Denmark
| | - K Buchmann
- Faculty of Health and Medical Sciences, Department of Veterinary Disease Biology, University of Copenhagen, Frederiksberg C, Denmark
| |
Collapse
|
34
|
Luo Y, Bolt HL, Eggimann GA, McAuley DF, McMullan R, Curran T, Zhou M, Jahoda PCAB, Cobb SL, Lundy FT. Peptoid Efficacy against Polymicrobial Biofilms Determined by Using Propidium Monoazide-Modified Quantitative PCR. Chembiochem 2016; 18:111-118. [PMID: 27900840 PMCID: PMC6680226 DOI: 10.1002/cbic.201600381] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Indexed: 01/07/2023]
Abstract
Biofilms containing Candida albicans are responsible for a wide variety of clinical infections. The protective effects of the biofilm matrix, the low metabolic activity of microorganisms within a biofilm and their high mutation rate, significantly enhance the resistance of biofilms to conventional antimicrobial treatments. Peptoids are peptide‐mimics that share many features of host defence antimicrobial peptides but have increased resistance to proteases and therefore have better stability in vivo. The activity of a library of peptoids was tested against monospecies and polymicrobial bacterial/fungal biofilms. Selected peptoids showed significant bactericidal and fungicidal activity against the polymicrobial biofilms. This coupled with low cytotoxicity suggests that peptoids could offer a new option for the treatment of clinically relevant polymicrobial infections.
Collapse
Affiliation(s)
- Yu Luo
- Centre for Experimental Medicine, The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Hannah L Bolt
- Durham University, Department of Chemistry, Biophysical Sciences Institute, South Road, Durham, DH1 3LE, UK
| | - Gabriela A Eggimann
- Durham University, Department of Chemistry, Biophysical Sciences Institute, South Road, Durham, DH1 3LE, UK
| | - Danny F McAuley
- Centre for Experimental Medicine, The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Ronan McMullan
- Centre for Experimental Medicine, The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Tanya Curran
- Regional Virus Laboratory, Kelvin Building, Royal Victoria Hospital, Belfast Health and Social Care Trust, Grosvenor Road, Belfast, BT12 6BA, UK
| | - Mei Zhou
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | | | - Steven L Cobb
- Durham University, Department of Chemistry, Biophysical Sciences Institute, South Road, Durham, DH1 3LE, UK
| | - Fionnuala T Lundy
- Centre for Experimental Medicine, The Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| |
Collapse
|
35
|
Victoria Castelli M, Gabriel Derita M, Noelí López S. Novel antifungal agents: a patent review (2013 - present). Expert Opin Ther Pat 2016; 27:415-426. [DOI: 10.1080/13543776.2017.1261113] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- María Victoria Castelli
- Universidad Nacional de Rosario, CONICET, Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Rosario, Santa Fe, Argentina
| | - Marcos Gabriel Derita
- Universidad Nacional de Rosario, CONICET, Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Rosario, Santa Fe, Argentina
- Universidad Nacional del Litoral, CONICET, Cátedra de Cultivos Intensivos, Facultad de Ciencias Agrarias, Esperanza, Santa Fe, Argentina
| | - Silvia Noelí López
- Universidad Nacional de Rosario, CONICET, Farmacognosia, Facultad de Ciencias Bioquímicas y Farmacéuticas, Rosario, Santa Fe, Argentina
| |
Collapse
|
36
|
Mittal S, Maurya IK, Kaur S, Swami A, Jain R, Wangoo N, Sharma RK. Insights into Mechanistic and Synergistic Aspects of Novel Synthetic Short Cationic Antibacterial Peptides. ChemistrySelect 2016. [DOI: 10.1002/slct.201600947] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sherry Mittal
- Department of Chemistry & Centre for Advanced Studies in Chemistry; Panjab University, Sector-14; Chandigarh- 160014 India
| | - Indresh K. Maurya
- Department of Microbial Biotechnology; Panjab University, Sector-14; Chandigarh- 160014 India
| | - Sarabjit Kaur
- Department of Chemistry & Centre for Advanced Studies in Chemistry; Panjab University, Sector-14; Chandigarh- 160014 India
| | - Anuradha Swami
- University Institute of Engineering & Technology (U.I.E.T.); Panjab University, Sector-25; Chandigarh- 160014 India
| | - Rahul Jain
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education & Research (NIPER), Sector-67, S.A.S. Nagar; Punjab- 160062 India
| | - Nishima Wangoo
- University Institute of Engineering & Technology (U.I.E.T.); Panjab University, Sector-25; Chandigarh- 160014 India
| | - Rohit K. Sharma
- Department of Chemistry & Centre for Advanced Studies in Chemistry; Panjab University, Sector-14; Chandigarh- 160014 India
| |
Collapse
|
37
|
Gontsarik M, Buhmann MT, Yaghmur A, Ren Q, Maniura-Weber K, Salentinig S. Antimicrobial Peptide-Driven Colloidal Transformations in Liquid-Crystalline Nanocarriers. J Phys Chem Lett 2016; 7:3482-3486. [PMID: 27541048 DOI: 10.1021/acs.jpclett.6b01622] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Designing efficient colloidal systems for the delivery of membrane active antimicrobial peptides requires in-depth understanding of their structural and morphological characteristics. Using dispersions of inverted type bicontinuous cubic phase (cubosomes), we examine the effect of integrating the amphiphilic peptide LL-37 at different concentrations on the self-assembled structure and evaluate its bactericidal ability against Escherichia coli. Small-angle X-ray scattering, dynamic light scattering, and cryogenic transmission electron microscopy show that LL-37 integrates into the bicontinuous cubic structure, inducing colloidal transformations to sponge and lamellar phases and micelles in a concentration-dependent manner. These investigations, together with in vitro evaluation studies using a clinically relevant bacterial strain, established the composition-nanostructure-activity relationship that can guide the design of new nanocarriers for antimicrobial peptides and may provide essential knowledge on the mechanisms underlying the bacterial membrane disruption with peptide-loaded nanostructures.
Collapse
Affiliation(s)
- Mark Gontsarik
- Laboratory for Biointerfaces, Department Materials meet Life, Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen , Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Matthias T Buhmann
- Laboratory for Biointerfaces, Department Materials meet Life, Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Anan Yaghmur
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen , Universitetsparken 2, DK-2100 Copenhagen Ø, Denmark
| | - Qun Ren
- Laboratory for Biointerfaces, Department Materials meet Life, Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Katharina Maniura-Weber
- Laboratory for Biointerfaces, Department Materials meet Life, Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Stefan Salentinig
- Laboratory for Biointerfaces, Department Materials meet Life, Empa, Swiss Federal Laboratories for Materials Science and Technology , Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| |
Collapse
|
38
|
Silva JP, Appelberg R, Gama FM. Antimicrobial peptides as novel anti-tuberculosis therapeutics. Biotechnol Adv 2016; 34:924-940. [PMID: 27235189 DOI: 10.1016/j.biotechadv.2016.05.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 05/20/2016] [Accepted: 05/22/2016] [Indexed: 12/30/2022]
Abstract
Tuberculosis (TB), a disease caused by the human pathogen Mycobacterium tuberculosis, has recently joined HIV/AIDS as the world's deadliest infectious disease, affecting around 9.6 million people worldwide in 2014. Of those, about 1.2 million died from the disease. Resistance acquisition to existing antibiotics, with the subsequent emergence of Multi-Drug Resistant mycobacteria strains, together with an increasing economic burden, has urged the development of new anti-TB drugs. In this scope, antimicrobial peptides (AMPs), which are small, cationic and amphipathic peptides that make part of the innate immune system, now arise as promising candidates for TB treatment. In this review, we analyze the potential of AMPs for this application. We address the mechanisms of action, advantages and disadvantages over conventional antibiotics and how problems associated with its use may be overcome to boost their therapeutic potential. Additionally, we address the challenges of translational development from benchside to bedside, evaluate the current development pipeline and analyze the expected global impact from a socio-economic standpoint. The quest for more efficient and more compliant anti-TB drugs, associated with the great therapeutic potential of emerging AMPs and the rising peptide market, provide an optimal environment for the emergence of AMPs as promising therapies. Still, their pharmacological properties need to be enhanced and manufacturing-associated issues need to be addressed.
Collapse
Affiliation(s)
- João P Silva
- CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal.
| | - Rui Appelberg
- Department of Immunophysiology, University of Porto, 4050-313 Porto, Portugal
| | - Francisco Miguel Gama
- CEB - Centre of Biological Engineering, University of Minho, Campus de Gualtar, Braga 4710-057, Portugal.
| |
Collapse
|
39
|
Moghaddam MM, Abolhassani F, Babavalian H, Mirnejad R, Azizi Barjini K, Amani J. Comparison of in vitro antibacterial activities of two cationic peptides CM15 and CM11 against five pathogenic bacteria: Pseudomonas aeruginosa, Staphylococcus aureus, Vibrio cholerae, Acinetobacter baumannii, and Escherichia coli. Probiotics Antimicrob Proteins 2016; 4:133-9. [PMID: 26781855 DOI: 10.1007/s12602-012-9098-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
In recent years, the widespread use of antibiotics has caused many bacterial pathogens resistance to conventional antibiotics. Therefore, generation of new antibiotics to control and reduce the effects of these pathogens is urgently needed. Antimicrobial peptides and proteins are important members of the host defense system in eukaryotes. These peptides are potent, broad-spectrum antibiotics that demonstrate potential as novel and alternative therapeutic agents for the treatment of drug-resistant infections. Accordingly, we evaluated two hybrid peptides CM11 (WKLFKKILKVL-NH2) and CM15 (KWKLFKKIGAVLKVL-NH2) on five important pathogenic bacteria. These peptides are short cecropin-melittin hybrid peptides obtained through a sequence combination approach, which are highly effective to inhibit the growth of important pathogenic bacteria. The activity of these two cationic peptides (CM11 and CM15) in different concentrations (2-64 mg/L) was investigated against standard and clinical isolates of important hospital infection bacteria by measuring MIC, MBC, and bactericidal assay. These peptides demonstrated the same ranges of inhibitory values: The organisms in early 24 h were more susceptible to polycationic peptides (MIC: 8 mg/L and MBC 32 mg/L), but after 48 h the MIC and MBC remained constant for the CM11 peptide. Bactericidal assay showed that all bacteria strains did not have any growth in agar plates after 40 min. The result showed that these two peptides are more effective than other peptides.
Collapse
Affiliation(s)
- M Moosazadeh Moghaddam
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Vanak Sq. Mollasadra St., P.O. Box: 19395-5487, Tehran, Iran.
| | - F Abolhassani
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Vanak Sq. Mollasadra St., P.O. Box: 19395-5487, Tehran, Iran.
| | - H Babavalian
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Vanak Sq. Mollasadra St., P.O. Box: 19395-5487, Tehran, Iran.
| | - R Mirnejad
- Molecular Biology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran.
| | - K Azizi Barjini
- Department of Molecular Biology, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, Iran.
| | - J Amani
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Vanak Sq. Mollasadra St., P.O. Box: 19395-5487, Tehran, Iran.
| |
Collapse
|
40
|
Martin L, De Santis R, Koczera P, Simons N, Haase H, Heinbockel L, Brandenburg K, Marx G, Schuerholz T. The Synthetic Antimicrobial Peptide 19-2.5 Interacts with Heparanase and Heparan Sulfate in Murine and Human Sepsis. PLoS One 2015; 10:e0143583. [PMID: 26600070 PMCID: PMC4658182 DOI: 10.1371/journal.pone.0143583] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 11/07/2015] [Indexed: 12/29/2022] Open
Abstract
Heparanase is an endo-β-glucuronidase that cleaves heparan sulfate side chains from their proteoglycans. Thereby, heparanase liberates highly potent circulating heparan sulfate-fragments (HS-fragments) and triggers the fatal and excessive inflammatory response in sepsis. As a potential anti-inflammatory agent for sepsis therapy, peptide 19-2.5 belongs to the class of synthetic anti-lipopolysaccharide peptides; however, its activity is not restricted to Gram-negative bacterial infection. We hypothesized that peptide 19-2.5 interacts with heparanase and/or HS, thereby reducing the levels of circulating HS-fragments in murine and human sepsis. Our data indicate that the treatment of septic mice with peptide 19-2.5 compared to untreated control animals lowers levels of plasma heparanase and circulating HS-fragments and reduces heparanase activity. Additionally, mRNA levels of heparanase in heart, liver, lung, kidney and spleen are downregulated in septic mice treated with peptide 19-2.5 compared to untreated control animals. In humans, plasma heparanase level and activity are elevated in septic shock. The ex vivo addition of peptide 19-2.5 to plasma of septic shock patients decreases heparanase activity but not heparanase level. Isothermal titration calorimetry revealed a strong exothermic reaction between peptide 19-2.5 and heparanase and HS-fragments. However, a saturation character has been identified only in the peptide 19-2.5 and HS interaction. In conclusion, the findings of our current study indicate that peptide 19-2.5 interacts with heparanase, which is elevated in murine and human sepsis and consecutively attenuates the generation of circulating HS-fragments in systemic inflammation. Thus, peptide 19-2.5 seems to be a potential anti-inflammatory agent in sepsis.
Collapse
Affiliation(s)
- Lukas Martin
- Department of Intensive Care and Intermediate Care, University Hospital RWTH, Aachen, Germany
| | - Rebecca De Santis
- Department of Intensive Care and Intermediate Care, University Hospital RWTH, Aachen, Germany
| | - Patrick Koczera
- Department of Intensive Care and Intermediate Care, University Hospital RWTH, Aachen, Germany
| | - Nadine Simons
- Department of Intensive Care and Intermediate Care, University Hospital RWTH, Aachen, Germany
| | - Hajo Haase
- Department of Food Chemistry and Toxicology, Berlin Institute of Technology, Berlin, Germany
| | - Lena Heinbockel
- Division of Biophysics, Forschungszentrum Borstel, Borstel, Germany
| | | | - Gernot Marx
- Department of Intensive Care and Intermediate Care, University Hospital RWTH, Aachen, Germany
| | - Tobias Schuerholz
- Department of Intensive Care and Intermediate Care, University Hospital RWTH, Aachen, Germany
- * E-mail:
| |
Collapse
|
41
|
Discovery of an ultra-short linear antibacterial tetrapeptide with anti-MRSA activity from a structure-activity relationship study. Eur J Med Chem 2015; 105:138-44. [PMID: 26489599 DOI: 10.1016/j.ejmech.2015.10.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 10/05/2015] [Accepted: 10/07/2015] [Indexed: 11/20/2022]
Abstract
The overuse and misuse of antibiotics has resulted in the emergence of drug-resistant pathogenic bacteria, including meticillin-resistant Staphylococcus aureus (MRSA), the primary pathogen responsible for human skin and soft-tissue infections. Antibacterial peptides are known to kill bacteria by rapidly disrupting their membranes and are deemed plausible alternatives to conventional antibiotics. One advantage of their membrane-targeting mode of action is that bacteria are unlikely to develop resistance as changing their cell membrane structure and morphology would likely involve extensive genetic mutations. However, major concerns in using peptides as antibacterial drugs include their instability towards plasma proteases, toxicity towards human cells due to their membrane-targeting mode of action and high manufacturing cost. These concerns can be mitigated by developing peptides as topical agents, by the judicial selection of amino acids and developing very short peptides respectively. In this preliminary report, we reveal a linear, non-hemolytic tetrapeptide with rapid bactericidal activity against MRSA developed from a structure-activity relationship study based on the antimicrobial hexapeptide WRWRWR-NH2. Our finding opens promising avenues for the development of ultra-short antibacterials to treat multidrug-resistant MRSA skin and soft tissue infections.
Collapse
|
42
|
|
43
|
Martin L, Schmitz S, De Santis R, Doemming S, Haase H, Hoeger J, Heinbockel L, Brandenburg K, Marx G, Schuerholz T. Peptide 19-2.5 inhibits heparan sulfate-triggered inflammation in murine cardiomyocytes stimulated with human sepsis serum. PLoS One 2015; 10:e0127584. [PMID: 26024383 PMCID: PMC4449035 DOI: 10.1371/journal.pone.0127584] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 04/16/2015] [Indexed: 12/17/2022] Open
Abstract
Myocardial dysfunction in sepsis has been linked to inflammation caused by pathogen-associated molecular patterns (PAMPs) as well as by host danger-associated molecular patterns (DAMPs). These include soluble heparan sulfate (HS), which triggers the devastating consequences of the pro-inflammatory cascades in severe sepsis and septic shock. Thus, there is increasing interest in the development of anti-infective agents, with effectiveness against both PAMPs and DAMPs. We hypothesized that a synthetic antimicrobial peptide (peptide 19-2.5) inhibits inflammatory response in murine cardiomyocytes (HL-1 cells) stimulated with PAMPs, DAMPs or serum from patients with septic shock by reduction and/or neutralization of soluble HS. In the current study, our data indicate that the treatment with peptide 19-2.5 decreases the inflammatory response in HL-1 cells stimulated with either PAMPs or DAMPs. Furthermore, our work shows that soluble HS in serum from patients with Gram-negative or Gram-positive septic shock induces a strong pro-inflammatory response in HL-1 cells, which can be effectively blocked by peptide 19-2.5. Based on these findings, peptide 19-2.5 is a novel anti-inflammatory agent interacting with both PAMPs and DAMPs, suggesting peptide 19-2.5 may have the potential for further development as a broad-spectrum anti-inflammatory agent in sepsis-induced myocardial inflammation and dysfunction.
Collapse
Affiliation(s)
- Lukas Martin
- Department of Intensive Care and Intermediate Care, University Hospital, Aachen, Germany
| | - Susanne Schmitz
- Department of Intensive Care and Intermediate Care, University Hospital, Aachen, Germany
| | - Rebecca De Santis
- Department of Intensive Care and Intermediate Care, University Hospital, Aachen, Germany
| | - Sabine Doemming
- Department of Intensive Care and Intermediate Care, University Hospital, Aachen, Germany
| | - Hajo Haase
- Department of Food Chemistry and Toxicology, Berlin Institute of Technology, Berlin, Germany
| | - Janine Hoeger
- Institute of Immunology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | | | | | - Gernot Marx
- Department of Intensive Care and Intermediate Care, University Hospital, Aachen, Germany
| | - Tobias Schuerholz
- Department of Intensive Care and Intermediate Care, University Hospital, Aachen, Germany
- * E-mail:
| |
Collapse
|
44
|
Lee J, Huang W, Broering JM, Barron AE, Seo J. Prostate tumor specific peptide-peptoid hybrid prodrugs. Bioorg Med Chem Lett 2015; 25:2849-52. [PMID: 26022845 DOI: 10.1016/j.bmcl.2015.04.092] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Revised: 03/17/2015] [Accepted: 04/30/2015] [Indexed: 11/30/2022]
Abstract
Inspired by naturally occurring host defense peptides, cationic amphipathic peptoids provide a promising scaffold for anti-cancer therapeutics. Herein, we report a library of peptide-peptoid hybrid prodrugs that can be selectively activated by prostate cancer cells. We have identified several compounds demonstrating potent anti-cancer activity with good to moderate selectivity. We believe that these prodrugs can provide a useful design principle for next generation peptide-peptoid hybrid prodrugs.
Collapse
Affiliation(s)
- Jiyoun Lee
- Department of Global Medical Science, Sungshin University, Seoul 142-732, Republic of Korea
| | - Wei Huang
- Department of Bioengineering, Stanford University, Palo Alto, CA 94305, USA
| | - James M Broering
- Department of Bioengineering, Stanford University, Palo Alto, CA 94305, USA
| | - Annelise E Barron
- Department of Bioengineering, Stanford University, Palo Alto, CA 94305, USA.
| | - Jiwon Seo
- Division of Liberal Arts and Sciences and Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea.
| |
Collapse
|
45
|
Saadi S, Saari N, Anwar F, Abdul Hamid A, Ghazali HM. Recent advances in food biopeptides: Production, biological functionalities and therapeutic applications. Biotechnol Adv 2015; 33:80-116. [DOI: 10.1016/j.biotechadv.2014.12.003] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 02/05/2014] [Accepted: 12/05/2014] [Indexed: 10/24/2022]
|
46
|
Kumar R, Chaudhary K, Sharma M, Nagpal G, Chauhan JS, Singh S, Gautam A, Raghava GPS. AHTPDB: a comprehensive platform for analysis and presentation of antihypertensive peptides. Nucleic Acids Res 2014; 43:D956-62. [PMID: 25392419 PMCID: PMC4383949 DOI: 10.1093/nar/gku1141] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AHTPDB (http://crdd.osdd.net/raghava/ahtpdb/) is a manually curated database of experimentally validated antihypertensive peptides. Information pertaining to peptides with antihypertensive activity was collected from research articles and from various peptide repositories. These peptides were derived from 35 major sources that include milk, egg, fish, pork, chicken, soybean, etc. In AHTPDB, most of the peptides belong to a family of angiotensin-I converting enzyme inhibiting peptides. The current release of AHTPDB contains 5978 peptide entries among which 1694 are unique peptides. Each entry provides detailed information about a peptide like sequence, inhibitory concentration (IC50), toxicity/bitterness value, source, length, molecular mass and information related to purification of peptides. In addition, the database provides structural information of these peptides that includes predicted tertiary and secondary structures. A user-friendly web interface with various tools has been developed to retrieve and analyse the data. It is anticipated that AHTPDB will be a useful and unique resource for the researchers working in the field of antihypertensive peptides.
Collapse
Affiliation(s)
- Ravi Kumar
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh 160036, India
| | - Kumardeep Chaudhary
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh 160036, India
| | - Minakshi Sharma
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh 160036, India
| | - Gandharva Nagpal
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh 160036, India
| | - Jagat Singh Chauhan
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh 160036, India
| | - Sandeep Singh
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh 160036, India
| | - Ankur Gautam
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh 160036, India
| | - Gajendra P S Raghava
- Bioinformatics Centre, CSIR-Institute of Microbial Technology, Chandigarh 160036, India
| |
Collapse
|
47
|
Kang SJ, Park SJ, Mishig-Ochir T, Lee BJ. Antimicrobial peptides: therapeutic potentials. Expert Rev Anti Infect Ther 2014; 12:1477-86. [DOI: 10.1586/14787210.2014.976613] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
48
|
Li W, Tailhades J, O'Brien-Simpson NM, Separovic F, Otvos L, Hossain MA, Wade JD. Proline-rich antimicrobial peptides: potential therapeutics against antibiotic-resistant bacteria. Amino Acids 2014; 46:2287-94. [PMID: 25141976 DOI: 10.1007/s00726-014-1820-1] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 07/28/2014] [Indexed: 02/06/2023]
Abstract
The increasing resistance of pathogens to antibiotics causes a huge clinical burden that places great demands on academic researchers and the pharmaceutical industry for resolution. Antimicrobial peptides, part of native host defense, have emerged as novel potential antibiotic alternatives. Among the different classes of antimicrobial peptides, proline-rich antimicrobial peptides, predominantly sourced from insects, have been extensively investigated to study their specific modes of action. In this review, we focus on recent developments in these peptides. They show a variety of modes of actions, including mechanism shift at high concentration, non-lytic mechanisms, as well as possessing different intracellular targets and lipopolysaccharide binding activity. Furthermore, proline-rich antimicrobial peptides display the ability to not only modulate the immune system via cytokine activity or angiogenesis but also possess properties of penetrating cell membranes and crossing the blood brain barrier suggesting a role as potential novel carriers. Ongoing studies of these peptides will likely lead to the development of more potent antimicrobial peptides that may serve as important additions to the armoury of agents against bacterial infection and drug delivery.
Collapse
Affiliation(s)
- Wenyi Li
- Florey Institute of Neuroscience and Mental Health, University of Melbourne, Parkville, VIC, 3010, Australia
| | | | | | | | | | | | | |
Collapse
|
49
|
Wang J, Li Y, Wang X, Chen W, Sun H, Wang J. Lipopolysaccharide induces amyloid formation of antimicrobial peptide HAL-2. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2910-8. [PMID: 25109934 DOI: 10.1016/j.bbamem.2014.07.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 07/01/2014] [Accepted: 07/30/2014] [Indexed: 10/24/2022]
Abstract
Lipopolysaccharide (LPS), the important component of the outer membrane of Gram-negative bacteria, contributes to the integrity of the outer membrane and protects the cell against bactericidal agents, including antimicrobial peptides. However, the mechanisms of interaction between antimicrobial peptides and LPS are not clearly understood. Halictines-2 (HAL-2), one of the novel antimicrobial peptides, was isolated from the venom of the eusocial bee Halictus sexcinctus. HAL-2 has exhibited potent antimicrobial activity against Gram-positive and Gram-negative bacteria and even against cancer cells. Here, we studied the interactions between HAL-2 and LPS to elucidate the antibacterial mechanism of HAL-2 in vitro. Our results show that HAL-2 adopts a significant degree of β-strand structure in the presence of LPS. LPS is capable of inducing HAL-2 amyloid formation, which may play a vital role in its antimicrobial activity.
Collapse
Affiliation(s)
- Jiarong Wang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei, Anhui 230031, PR China
| | - Yan Li
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei, Anhui 230031, PR China
| | - Xiaoming Wang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei, Anhui 230031, PR China
| | - Wei Chen
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei, Anhui 230031, PR China
| | - Hongbin Sun
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei, Anhui 230031, PR China.
| | - Junfeng Wang
- High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Science, Hefei, Anhui 230031, PR China.
| |
Collapse
|
50
|
Peptide entry inhibitors of enveloped viruses: the importance of interfacial hydrophobicity. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2180-97. [PMID: 24780375 PMCID: PMC7094693 DOI: 10.1016/j.bbamem.2014.04.015] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 04/08/2014] [Accepted: 04/17/2014] [Indexed: 12/16/2022]
Abstract
There are many peptides known that inhibit the entry of enveloped viruses into cells, including one peptide that is successfully being used in the clinic as a drug. In this review, we discuss the discovery, antiviral activity and mechanism of action of such peptides. While peptide entry inhibitors have been discovered by a wide variety of approaches (structure-based, accidental, intentional, rational and brute force) we show here that they share a common physical chemical property: they are at least somewhat hydrophobic and/or amphipathic and have a propensity to interact with membrane interfaces. We propose that this propensity drives a shared mechanism of action for many peptide entry inhibitors, involving direct interactions with viral and cellular membranes, as well as interactions with the complex hydrophobic protein/lipid interfaces that are exposed, at least transiently, during virus-cell fusion. By interacting simultaneously with the membrane interfaces and other critical hydrophobic surfaces, we hypothesize that peptide entry inhibitors can act by changing the physical chemistry of the membranes, and the fusion protein interfaces bridging them, and by doing so interfere with the fusion of cellular and viral membranes. Based on this idea, we propose that an approach that focuses on the interfacial hydrophobicity of putative entry inhibitors could lead to the efficient discovery of novel, broad-spectrum viral entry inhibitors. This article is part of a Special Issue entitled: Interfacially Active Peptides and Proteins. Guest Editors: William C. Wimley and Kalina Hristova.
Collapse
|