1
|
Rzycki M, Gładysiewicz-Kudrawiec M, Kraszewski S. Molecular guidelines for promising antimicrobial agents. Sci Rep 2024; 14:4641. [PMID: 38409391 DOI: 10.1038/s41598-024-55418-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 02/23/2024] [Indexed: 02/28/2024] Open
Abstract
Antimicrobial resistance presents a pressing challenge to public health, which requires the search for novel antimicrobial agents. Various experimental and theoretical methods are employed to understand drug-target interactions and propose multistep solutions. Nonetheless, efficient screening of drug databases requires rapid and precise numerical analysis to validate antimicrobial efficacy. Diptool addresses this need by predicting free energy barriers and local minima for drug translocation across lipid membranes. In the current study employing Diptool free energy predictions, the thermodynamic commonalities between selected antimicrobial molecules were characterized and investigated. To this end, various clustering methods were used to identify promising groups with antimicrobial activity. Furthermore, the molecular fingerprinting and machine learning approach (ML) revealed common structural elements and physicochemical parameters in these clusters, such as long carbon chains, charged ammonium groups, and low dipole moments. This led to the establishment of guidelines for the selection of effective antimicrobial candidates based on partition coefficients (logP) and molecular mass ranges. These guidelines were implemented within the Reinforcement Learning for Structural Evolution (ReLeaSE) framework, generating new chemicals with desired properties. Interestingly, ReLeaSE produced molecules with structural profiles similar to the antimicrobial agents tested, confirming the importance of the identified features. In conclusion, this study demonstrates the ability of molecular fingerprinting and AI-driven methods to identify promising antimicrobial agents with a broad range of properties. These findings deliver substantial implications for the development of antimicrobial drugs and the ongoing battle against antibiotic-resistant bacteria.
Collapse
Affiliation(s)
- Mateusz Rzycki
- Department of Biomedical Engineering, Wroclaw University of Science and Technology, 50-370, Wroclaw, Poland.
| | | | - Sebastian Kraszewski
- Department of Biomedical Engineering, Wroclaw University of Science and Technology, 50-370, Wroclaw, Poland
| |
Collapse
|
2
|
Vyas HK, Xia B, Alam D, Gracie NP, Rothwell JG, Rice SA, Carter D, Cullen PJ, Mai-Prochnow A. Plasma activated water as a pre-treatment strategy in the context of biofilm-infected chronic wounds. Biofilm 2023; 6:100154. [PMID: 37771391 PMCID: PMC10522953 DOI: 10.1016/j.bioflm.2023.100154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/11/2023] [Accepted: 09/11/2023] [Indexed: 09/30/2023] Open
Abstract
Healing and treatment of chronic wounds are often complicated due to biofilm formation by pathogens. Here, the efficacy of plasma activated water (PAW) as a pre-treatment strategy has been investigated prior to the application of topical antiseptics polyhexamethylene biguanide, povidone iodine, and MediHoney, which are routinely used to treat chronic wounds. The efficacy of this treatment strategy was determined against biofilms of Escherichia coli formed on a plastic substratum and on a human keratinocyte monolayer substratum used as an in vitro biofilm-skin epithelial cell model. PAW pre-treatment greatly increased the killing efficacy of all the three antiseptics to eradicate the E. coli biofilms formed on the plastic and keratinocyte substrates. However, the efficacy of the combined PAW-antiseptic treatment and single treatments using PAW or antiseptic alone was lower for biofilms formed in the in vitro biofilm-skin epithelial cell model compared to the plastic substratum. Scavenging assays demonstrated that reactive species present within the PAW were largely responsible for its anti-biofilm activity. PAW treatment resulted in significant intracellular reactive oxygen and nitrogen species accumulation within the E. coli biofilms, while also rapidly acting on the microbial membrane leading to outer membrane permeabilisation and depolarisation. Together, these factors contribute to significant cell death, potentiating the antibacterial effect of the assessed antiseptics.
Collapse
Affiliation(s)
- Heema K.N. Vyas
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
- The Sydney Institute for Infectious Diseases, The University of Sydney, Sydney, New South Wales, Australia
| | - Binbin Xia
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
| | - David Alam
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
| | - Nicholas P. Gracie
- School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Joanna G. Rothwell
- School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Scott A. Rice
- Agriculture and Food, Microbiomes for One Systems Health, Commonwealth Scientific and Industrial Research Organisation, Sydney, New South Wales, Australia
- The Australian Institute for Microbiology and Infection, University of Technology Sydney, Sydney, New South Wales, Australia
| | - Dee Carter
- The Sydney Institute for Infectious Diseases, The University of Sydney, Sydney, New South Wales, Australia
- School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Patrick J. Cullen
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
| | - Anne Mai-Prochnow
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
| |
Collapse
|
3
|
Bril’kov MS, Stenbakk V, Jakubec M, Vasskog T, Kristoffersen T, Cavanagh JP, Ericson JU, Isaksson J, Flaten GE. Bacterial extracellular vesicles: towards realistic models for bacterial membranes in molecular interaction studies by surface plasmon resonance. Front Mol Biosci 2023; 10:1277963. [PMID: 38152113 PMCID: PMC10751319 DOI: 10.3389/fmolb.2023.1277963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 12/01/2023] [Indexed: 12/29/2023] Open
Abstract
One way to mitigate the ongoing antimicrobial resistance crisis is to discover and develop new classes of antibiotics. As all antibiotics at some point need to either cross or just interact with the bacterial membrane, there is a need for representative models of bacterial membranes and efficient methods to characterize the interactions with novel molecules -both to generate new knowledge and to screen compound libraries. Since the bacterial cell envelope is a complex assembly of lipids, lipopolysaccharides, membrane proteins and other components, constructing relevant synthetic liposome-based models of the membrane is both difficult and expensive. We here propose to let the bacteria do the hard work for us. Bacterial extracellular vesicles (bEVs) are naturally secreted by Gram-negative and Gram-positive bacteria, playing a role in communication between bacteria, as virulence factors, molecular transport or being a part of the antimicrobial resistance mechanism. bEVs consist of the bacterial outer membrane and thus inherit many components and properties of the native outer cell envelope. In this work, we have isolated and characterized bEVs from one Escherichia coli mutant and three clinical strains of the ESKAPE pathogens Klebsiella pneumoniae, Acinetobacter baumannii, and Pseudomonas aeruginosa. The bEVs were shown to be representative models for the bacterial membrane in terms of lipid composition with speciesstrain specific variations. The bEVs were further used to probe the interactions between bEV and antimicrobial peptides (AMPs) as model compounds by Surface Plasmon Resonance (SPR) and provide proof-of-principle that bEVs can be used as an easily accessible and highly realistic model for the bacterial surface in interaction studies. This further enables direct monitoring of the effect induced by antibiotics, or the response to host-pathogen interactions.
Collapse
Affiliation(s)
- Maxim S. Bril’kov
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway
| | - Victoria Stenbakk
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway
| | - Martin Jakubec
- Chemical Synthesis and Analysis Research Group, Department of Chemistry, Faculty of Natural Sciences and Technology, UiT the Arctic University of Norway, Tromsø, Norway
| | - Terje Vasskog
- Natural Products and Medicinal Chemistry Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway
| | - Tone Kristoffersen
- Chemical Synthesis and Analysis Research Group, Department of Chemistry, Faculty of Natural Sciences and Technology, UiT the Arctic University of Norway, Tromsø, Norway
| | - Jorunn Pauline Cavanagh
- Pediatric Research Group, Department of Clinical Medicine, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway
| | - Johanna U. Ericson
- Research Group for Host Microbe Interactions, Department of Medical Biology, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway
| | - Johan Isaksson
- Chemical Synthesis and Analysis Research Group, Department of Chemistry, Faculty of Natural Sciences and Technology, UiT the Arctic University of Norway, Tromsø, Norway
- Natural Products and Medicinal Chemistry Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway
| | - Gøril Eide Flaten
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT the Arctic University of Norway, Tromsø, Norway
| |
Collapse
|
4
|
Pfukwa NBC, Rautenbach M, Hunt NT, Olaoye OO, Kumar V, Parker AW, Minnes L, Neethling PH. Temperature-Induced Effects on the Structure of Gramicidin S. J Phys Chem B 2023; 127:3774-3786. [PMID: 37125750 DOI: 10.1021/acs.jpcb.2c06115] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
We report on the structure of Gramicidin S (GS) in a model membrane mimetic environment represented by the amphipathic solvent 1-octanol using one-dimensional (1D) and two-dimensional (2D) IR spectroscopy. To explore potential structural changes of GS, we also performed a series of spectroscopic measurements at differing temperatures. By analyzing the amide I band and using 2D-IR spectral changes, results could be associated to the disruption of aggregates/oligomers, as well as structural and conformational changes happening in the concentrated solution of GS. The ability of 2D-IR to enable differentiation in melting transitions of oligomerized GS structures is attributed to the sensitivity of the technique to vibrational coupling. Two melting transition temperatures were identified; at Tm1 in the range 41-47 °C where the GS aggregates/oligomers disassemble and at Tm2 = 57 ± 2 °C where there is significant change involving GS β-sheet-type hydrogen bonds, whereby it is proposed that there is loss of interpeptide hydrogen bonds and we are left with mainly intrapeptide β-sheet and β-turn hydrogen bonds of the smaller oligomers. Further analysis with quantum mechanical/molecular mechanics (QM/MM) simulations and second derivative results highlighted the participation of active GS side chains. Ultimately, this work contributes toward understanding the GS structure and the formulation of GS analogues with improved bioactivity.
Collapse
Affiliation(s)
- Ngaatendwe B C Pfukwa
- Department of Physics, Laser Research Institute, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Marina Rautenbach
- BIOPEP Peptide Group, Department of Biochemistry, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Neil T Hunt
- Department of Chemistry and York Biomedical Research Institute, University of York, Heslington, York YO10 5DD, U.K
| | - Olufemi O Olaoye
- Department of Physics, Laser Research Institute, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Vikas Kumar
- BIOPEP Peptide Group, Department of Biochemistry, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Anthony W Parker
- Department of Physics, Laser Research Institute, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
- Research Complex at Harwell, Rutherford Appleton Laboratory, STFC Central Laser Facility, Harwell Science and Innovation Campus, Didcot, Oxon OX11 0QX, U.K
| | - Lucy Minnes
- Department of Physics, University of Strathclyde, SUPA, 107 Rottenrow East, Glasgow G4 0NG, U.K
| | - Pieter H Neethling
- Department of Physics, Laser Research Institute, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| |
Collapse
|
5
|
In Silico and In Vitro Inhibition of SARS-CoV-2 PL pro with Gramicidin D. Int J Mol Sci 2023; 24:ijms24031955. [PMID: 36768280 PMCID: PMC9915632 DOI: 10.3390/ijms24031955] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/14/2023] [Accepted: 01/15/2023] [Indexed: 01/20/2023] Open
Abstract
Finding an effective drug to prevent or treat COVID-19 is of utmost importance in tcurrent pandemic. Since developing a new treatment takes a significant amount of time, drug repurposing can be an effective option for achieving a rapid response. This study used a combined in silico virtual screening protocol for candidate SARS-CoV-2 PLpro inhibitors. The Drugbank database was searched first, using the Informational Spectrum Method for Small Molecules, followed by molecular docking. Gramicidin D was selected as a peptide drug, showing the best in silico interaction profile with PLpro. After the expression and purification of PLpro, gramicidin D was screened for protease inhibition in vitro and was found to be active against PLpro. The current study's findings are significant because it is critical to identify COVID-19 therapies that are efficient, affordable, and have a favorable safety profile.
Collapse
|
6
|
Disruption of the Cytoplasmic Membrane Structure and Barrier Function Underlies the Potent Antiseptic Activity of Octenidine in Gram-Positive Bacteria. Appl Environ Microbiol 2022; 88:e0018022. [PMID: 35481757 PMCID: PMC9128513 DOI: 10.1128/aem.00180-22] [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] [Indexed: 01/22/2023] Open
Abstract
The antimicrobial killing mechanism of octenidine (OCT), a well-known antiseptic is poorly understood. We recently reported its interaction with Gram-negative bacteria by insertion of OCT into the outer and cytoplasmic membrane of Escherichia coli, resulting in a chaotic lipid rearrangement and rapid disruption of the cell envelope. Its action primarily disturbs the packing order of the hydrophobic moiety of a lipid, which consequently might result in a cascade of multiple effects at a cellular level. Here, we investigated OCT's impact on two different Gram-positive bacteria, Enterococcus hirae and Bacillus subtilis, and their respective model membranes. In accordance with our previous results, OCT induced membrane disorder in all investigated model systems. Electron and fluorescence microscopy clearly demonstrated changes in cellular structure and membrane integrity. These changes were accompanied by neutralization of the surface charge in both E. hirae and B. subtilis and membrane disturbances associated with permeabilization. Similar permeabilization and disordering of the lipid bilayer was also observed in model membranes. Furthermore, experiments performed on strongly versus partly anionic membranes showed that the lipid disordering effect induced by OCT is a result of maximized hydrophobic over electrostatic forces without distinct neutralization of the surface charge or discrimination between the lipid head groups. Indeed, mutants lacking specific lipid head groups were also susceptible to OCT to a similar extent as the wild type. The observed unspecific mode of action of OCT underlines its broad antimicrobial profile and renders the development of bacterial resistance to this molecule less likely. IMPORTANCE OCT is a well-established antiseptic molecule routinely used in a large field of clinical applications. Since the spread of antimicrobial resistance has restricted the use of antibiotics worldwide, topically applied antiseptics like OCT, with a broad spectrum of antimicrobial activity and high safety profile, gain increasing importance for effective infection prevention and therapy. To eliminate a wide spectrum of disease-causing microorganisms, a compound's antiseptic activity should be unspecific or multitarget. Our results demonstrate an unspecific mechanism of action for OCT, which remained largely unknown for years. OCT disturbs the barrier function of a bacterial cell, a function that is absolutely fundamental for survival. Because OCT does not distinguish between lipids, the building blocks of bacterial membranes, its mode of action might be attributed to all bacteria, including (multi)drug-resistant isolates. Our results underpin OCT's potent antiseptic activity for successful patient outcome.
Collapse
|
7
|
Li X, Zuo S, Wang B, Zhang K, Wang Y. Antimicrobial Mechanisms and Clinical Application Prospects of Antimicrobial Peptides. Molecules 2022; 27:2675. [PMID: 35566025 PMCID: PMC9104849 DOI: 10.3390/molecules27092675] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 04/14/2022] [Accepted: 04/19/2022] [Indexed: 12/16/2022] Open
Abstract
Antimicrobial peptides are a type of small-molecule peptide that widely exist in nature and are components of the innate immunity of almost all living things. They play an important role in resisting foreign invading microorganisms. Antimicrobial peptides have a wide range of antibacterial activities against bacteria, fungi, viruses and other microorganisms. They are active against traditional antibiotic-resistant strains and do not easily induce the development of drug resistance. Therefore, they have become a hot spot of medical research and are expected to become a new substitute for fighting microbial infection and represent a new method for treating drug-resistant bacteria. This review briefly introduces the source and structural characteristics of antimicrobial peptides and describes those that have been used against common clinical microorganisms (bacteria, fungi, viruses, and especially coronaviruses), focusing on their antimicrobial mechanism of action and clinical application prospects.
Collapse
Affiliation(s)
- Xin Li
- Department of Infectious Diseases, First Hospital of Jilin University, Changchun 130021, China; (X.L.); (B.W.)
| | - Siyao Zuo
- Department of Dermatology and Venereology, First Hospital of Jilin University, Changchun 130021, China;
| | - Bin Wang
- Department of Infectious Diseases, First Hospital of Jilin University, Changchun 130021, China; (X.L.); (B.W.)
| | - Kaiyu Zhang
- Department of Infectious Diseases, First Hospital of Jilin University, Changchun 130021, China; (X.L.); (B.W.)
| | - Yang Wang
- Department of Infectious Diseases, First Hospital of Jilin University, Changchun 130021, China; (X.L.); (B.W.)
| |
Collapse
|
8
|
Enayathullah MG, Parekh Y, Banu S, Ram S, Nagaraj R, Kumar BK, Idris MM. Gramicidin S and melittin: potential anti-viral therapeutic peptides to treat SARS-CoV-2 infection. Sci Rep 2022; 12:3446. [PMID: 35236909 PMCID: PMC8891299 DOI: 10.1038/s41598-022-07341-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 02/16/2022] [Indexed: 01/02/2023] Open
Abstract
The COVID19 pandemic has led to multipronged approaches for treatment of the disease. Since de novo discovery of drugs is time consuming, repurposing of molecules is now considered as one of the alternative strategies to treat COVID19. Antibacterial peptides are being recognized as attractive candidates for repurposing to treat viral infections. In this study, we describe the anti-SARS-CoV-2 activity of the well-studied antibacterial peptides gramicidin S and melittin obtained from Bacillus brevis and bee venom respectively. The EC50 values for gramicidin S and melittin were 1.571 µg and 0.656 µg respectively based on in vitro antiviral assay. Significant decrease in the viral load as compared to the untreated group with no/very less cytotoxicity was observed. Both the peptides treated to the SARS-CoV-2 infected Vero cells showed viral clearance from 12 h onwards with a maximal viral clearance after 24 h post infection. Proteomics analysis indicated that more than 250 proteins were differentially regulated in the gramicidin S and melittin treated SARS-CoV-2 infected Vero cells against control SARS-CoV-2 infected Vero cells after 24 and 48 h post infection. The identified proteins were found to be associated in the metabolic and mRNA processing of the Vero cells post-treatment and infection. Both these peptides could be attractive candidates for repurposing to treat SARS-CoV-2 infection.
Collapse
Affiliation(s)
| | - Yash Parekh
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, Telangana, 500007, India
| | - Sarena Banu
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, Telangana, 500007, India
| | - Sushma Ram
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, Telangana, 500007, India
| | - Ramakrishnan Nagaraj
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, Telangana, 500007, India
| | - Bokara Kiran Kumar
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, Telangana, 500007, India.
| | - Mohammed M Idris
- CSIR-Centre for Cellular and Molecular Biology, Hyderabad, Telangana, 500007, India.
| |
Collapse
|
9
|
Braglia C, Alberoni D, Porrini MP, Garrido PM, Baffoni L, Di Gioia D. Screening of Dietary Ingredients against the Honey Bee Parasite Nosema ceranae. Pathogens 2021; 10:1117. [PMID: 34578150 PMCID: PMC8466614 DOI: 10.3390/pathogens10091117] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/27/2021] [Accepted: 08/27/2021] [Indexed: 12/27/2022] Open
Abstract
Nosema ceranae is a major pathogen in the beekeeping sector, responsible for nosemosis. This disease is hard to manage since its symptomatology is masked until a strong collapse of the colony population occurs. Conversely, no medicaments are available in the market to counteract nosemosis, and only a few feed additives, with claimed antifungal action, are available. New solutions are strongly required, especially based on natural methods alternative to veterinary drugs that might develop resistance or strongly pollute honey bees and the environment. This study aims at investigating the nosemosis antiparasitic potential of some plant extracts, microbial fermentation products, organic acids, food chain waste products, bacteriocins, and fungi. Honey bees were singularly infected with 5 × 104 freshly prepared N. ceranae spores, reared in cages and fed ad libitum with sugar syrup solution containing the active ingredient. N. ceranae in the gut of honey bees was estimated using qPCR. The results showed that some of the ingredients administered, such as acetic acid at high concentration, p-coumaric acid, and Saccharomyces sp. strain KIA1, were effective in the control of nosemosis. On the other hand, wine acetic acid strongly increased the N. ceranae amount. This study investigates the possibility of using compounds such as organic acids or biological agents including those at the base of the circular economy, i.e., wine waste production, in order to improve honeybee health.
Collapse
Affiliation(s)
- Chiara Braglia
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy; (C.B.); (L.B.); (D.D.G.)
| | - Daniele Alberoni
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy; (C.B.); (L.B.); (D.D.G.)
| | - Martin Pablo Porrini
- Instituto de Investigaciones en Producción Sanidad y Ambiente (IIPROSAM), Centro Científico Tecnológico Mar del Plata-CONICET-UNMdP-CIC-PBA, Funes 3350, Mar del Plata Zc 7600, Argentina; (M.P.P.); (P.M.G.)
- Centro de Investigación en Abejas Sociales (CIAS), FCEyN, UNMdP, Funes 3350, Mar del Plata Zc 7600, Argentina
| | - Paula Melisa Garrido
- Instituto de Investigaciones en Producción Sanidad y Ambiente (IIPROSAM), Centro Científico Tecnológico Mar del Plata-CONICET-UNMdP-CIC-PBA, Funes 3350, Mar del Plata Zc 7600, Argentina; (M.P.P.); (P.M.G.)
- Centro de Investigación en Abejas Sociales (CIAS), FCEyN, UNMdP, Funes 3350, Mar del Plata Zc 7600, Argentina
| | - Loredana Baffoni
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy; (C.B.); (L.B.); (D.D.G.)
| | - Diana Di Gioia
- Department of Agricultural and Food Sciences (DISTAL), University of Bologna, Viale Fanin 44, 40127 Bologna, Italy; (C.B.); (L.B.); (D.D.G.)
| |
Collapse
|
10
|
Antezana PE, Municoy S, Bellino MG, Martini MF, Desimone MF. Nanodelivery of the Gramicidin Peptide for Enhancing Antimicrobial Activity. EUR J LIPID SCI TECH 2021. [DOI: 10.1002/ejlt.202000389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Pablo E. Antezana
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química y Metabolismo del Fármaco (IQUIMEFA) Facultad de Farmacia y Bioquímica Junín 956, (1113) Buenos Aires Argentina
| | - Sofia Municoy
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química y Metabolismo del Fármaco (IQUIMEFA) Facultad de Farmacia y Bioquímica Junín 956, (1113) Buenos Aires Argentina
| | - Martín G. Bellino
- Instituto de Nanociencia y Nanotecnología – Comisión Nacional de Energía Atómica y Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Av. General Paz 1499, (1650) San Martín Argentina
| | - M. Florencia Martini
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química y Metabolismo del Fármaco (IQUIMEFA) Facultad de Farmacia y Bioquímica Junín 956, (1113) Buenos Aires Argentina
| | - Martín F. Desimone
- Universidad de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto de Química y Metabolismo del Fármaco (IQUIMEFA) Facultad de Farmacia y Bioquímica Junín 956, (1113) Buenos Aires Argentina
| |
Collapse
|
11
|
Cell Surface Binding and Lipid Interactions behind Chemotherapy-Drug-Induced Ion Pore Formation in Membranes. MEMBRANES 2021; 11:membranes11070501. [PMID: 34209282 PMCID: PMC8304557 DOI: 10.3390/membranes11070501] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/17/2021] [Accepted: 06/25/2021] [Indexed: 11/17/2022]
Abstract
Chemotherapy drugs (CDs) disrupt the lipid membrane’s insulation properties by inducing stable ion pores across bilayer membranes. The underlying molecular mechanisms behind pore formation have been revealed in this study using several methods that confirm molecular interactions and detect associated energetics of drugs on the cell surface in general and in lipid bilayers in particular. Liposome adsorption and cell surface binding of CD colchicine has been demonstrated experimentally. Buffer dissolved CDs were considerably adsorbed in the incubated phospholipid liposomes, measured using the patented ‘direct detection method’. The drug adsorption process is regulated by the membrane environment, demonstrated in cholesterol-containing liposomes. We then detailed the phenomenology and energetics of the low nanoscale dimension cell surface (membrane) drug distribution, using atomic force microscopy (AFM) imaging what addresses the surface morphology and measures adhesion force (reducible to adhesive energy). Liposome adsorption and cell surface binding data helped model the cell surface drug distribution. The underlying molecular interactions behind surface binding energetics of drugs have been addressed in silico numerical computations (NCs) utilizing the screened Coulomb interactions among charges in a drug–drug/lipid cluster. Molecular dynamics (MD) simulations of the CD-lipid complexes detected primarily important CD-lipid electrostatic and van der Waals (vdW) interaction energies. From the energetics point of view, both liposome and cell surface membrane adsorption of drugs are therefore obvious findings. Colchicine treated cell surface AFM images provide a few important phenomenological conclusions, such as drugs bind generally with the cell surface, bind independently as well as in clusters of various sizes in random cell surface locations. The related adhesion energy decreases with increasing drug cluster size before saturating for larger clusters. MD simulation detected electrostatic and vdW and NC-derived charge-based interactions explain molecularly of the cause of cell surface binding of drugs. The membrane binding/association of drugs may help create drug–lipid complexes with specific energetics and statistically lead to the creation of ion channels. We reveal here crucial molecular understanding and features of the pore formation inside lipid membranes that may be applied universally for most of the pore-forming existing agents and novel candidate drugs.
Collapse
|
12
|
Legrand B, Maillard LT. α,β-Unsaturated γ-Peptide Foldamers. Chempluschem 2021; 86:629-645. [PMID: 33856125 DOI: 10.1002/cplu.202100045] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/31/2021] [Indexed: 01/01/2023]
Abstract
Despite their concomitant emergence in the 1990s, γ-peptide foldamers have not developed as fast as β-peptide foldamers and to date, only a few γ-oligomer structures have been reported, and with sparse applications. Among these examples, sequences containing α,β-unsaturated γ-amino acids have recently drawn attention since the Z/E configurations of the double bond provide opposite planar restrictions leading to divergent conformational behaviors, from helix to extended structures. In this Review, we give a comprehensive overview of the developments of γ-peptide foldamers containing α,β-unsaturated γ-amino acids with examples of applications for health and catalysis, as well as materials science.
Collapse
Affiliation(s)
- Baptiste Legrand
- Institut des Biomolécules Max Mousseron, IBMM, University of Montpellier, ENSCM, CNRS, Montpellier, France., 15 Av. Charles Flahault BP 14 491, 34093, Montpellier Cedex 5, France
| | - Ludovic T Maillard
- Institut des Biomolécules Max Mousseron, IBMM, University of Montpellier, ENSCM, CNRS, Montpellier, France., 15 Av. Charles Flahault BP 14 491, 34093, Montpellier Cedex 5, France
| |
Collapse
|
13
|
Ashrafuzzaman M. The Antimicrobial Peptide Gramicidin S Enhances Membrane Adsorption and Ion Pore Formation Potency of Chemotherapy Drugs in Lipid Bilayers. MEMBRANES 2021; 11:247. [PMID: 33808204 PMCID: PMC8067072 DOI: 10.3390/membranes11040247] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/06/2021] [Accepted: 02/17/2021] [Indexed: 01/25/2023]
Abstract
We recently published two novel findings where we found the chemotherapy drugs (CDs) thiocolchicoside (TCC) and taxol to induce toroidal type ion pores and the antimicrobial peptide gramicidin S (GS) to induce transient defects in model membranes. Both CD pores and GS defects were induced under the influence of an applied transmembrane potential (≈100 mV), which was inspected using the electrophysiology record of membrane currents (ERMCs). In this article, I address the regulation of the membrane adsorption and pore formation of CDs due to GS-induced possible alterations of lipid bilayer physical properties. In ERMCs, low micromolar (≥1 μM) GS concentrations in the aqueous phase were found to cause an induction of defects in lipid bilayers, but nanomolar (nM) concentration GS did nothing. For the binary presence of CDs and GS in the membrane-bathing aqueous phase, the TCC pore formation potency is found to increase considerably due to nM concentration GS in buffer. This novel result resembles our recently reported finding that due to the binary aqueous presence of two AMPs (gramicidin A or alamethicin and GS), the pore or defect-forming potency of either AMP increases considerably. To reveal the underlying molecular mechanisms, the influence of GS (0-400 nM) on the quantitative liposome (membrane) adsorption of CD molecules, colchicine and TCC, was tested. I used the recently patented direct detection method, which helps detect the membrane active agents directly at the membrane in the mole fraction relative to its concentrations in aqueous phase. We find that GS, at concentrations known to do nothing to the lipid bilayer electrical barrier properties in ERMCs, increases the membrane adsorption (membrane uptake) of CDs considerably. This phenomenological finding along with the GS effects on CD-induced membrane conductance increase helps predict an important conclusion. The binary presence of AMPs alongside CDs in the lipid membrane vicinity may work toward enhancing the physical adsorption and pore formation potency of CDs in lipid bilayers. This may help understand why CDs cause considerable cytotoxicity.
Collapse
Affiliation(s)
- Md Ashrafuzzaman
- Biochemistry Department, Science College, King Saud University, Riyadh 11451, Saudi Arabia
| |
Collapse
|
14
|
Jiang Y, Chen Y, Song Z, Tan Z, Cheng J. Recent advances in design of antimicrobial peptides and polypeptides toward clinical translation. Adv Drug Deliv Rev 2021; 170:261-280. [PMID: 33400958 DOI: 10.1016/j.addr.2020.12.016] [Citation(s) in RCA: 109] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 12/16/2020] [Accepted: 12/28/2020] [Indexed: 12/27/2022]
Abstract
The recent outbreaks of infectious diseases caused by multidrug-resistant pathogens have sounded a piercing alarm for the need of new effective antimicrobial agents to guard public health. Among different types of candidates, antimicrobial peptides (AMPs) and the synthetic mimics of AMPs (SMAMPs) have attracted significant enthusiasm in the past thirty years, due to their unique membrane-active antimicrobial mechanism and broad-spectrum antimicrobial activity. The extensive research has brought many drug candidates into clinical and pre-clinical development. Despite tremendous progresses have been made, several major challenges inherent to current design strategies have slowed down the clinical translational development of AMPs and SMAMPs. However, these challenges also triggered many efforts to redesign and repurpose AMPs. In this review, we will first give an overview on AMPs and their synthetic mimics, and then discuss the current status of their clinical translation. Finally, the recent advances in redesign and repurposing AMPs and SMAMPs are highlighted.
Collapse
|
15
|
Wątły J, Miller A, Kozłowski H, Rowińska-Żyrek M. Peptidomimetics - An infinite reservoir of metal binding motifs in metabolically stable and biologically active molecules. J Inorg Biochem 2021; 217:111386. [PMID: 33610030 DOI: 10.1016/j.jinorgbio.2021.111386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 01/14/2021] [Accepted: 01/27/2021] [Indexed: 12/12/2022]
Abstract
The involvement of metal ions in interactions with therapeutic peptides is inevitable. They are one of the factors able to fine-tune the biological properties of antimicrobial peptides, a promising group of drugs with one large drawback - a problematic metabolic stability. Appropriately chosen, proteolytically stable peptidomimetics seem to be a reasonable solution of the problem, and the use of D-, β-, γ-amino acids, unnatural amino acids, azapeptides, peptoids, cyclopeptides and dehydropeptides is an infinite reservoir of metal binding motifs in metabolically stable, well-designed, biologically active molecules. Below, their specific structural features, metal-chelating abilities and antimicrobial potential are discussed.
Collapse
Affiliation(s)
- Joanna Wątły
- Faculty of Chemistry, University of Wroclaw, Joliot - Curie 14, Wroclaw 50-383, Poland.
| | - Adriana Miller
- Faculty of Chemistry, University of Wroclaw, Joliot - Curie 14, Wroclaw 50-383, Poland
| | - Henryk Kozłowski
- Faculty of Chemistry, University of Wroclaw, Joliot - Curie 14, Wroclaw 50-383, Poland; Department of Health Sciences, University of Opole, Katowicka 68, Opole 45-060, Poland
| | | |
Collapse
|
16
|
Ghosh U, Soni I, Kaul G, Trivedi P, Chaturvedi V, Chopra S, Kanti Chakraborty T. Synthesis and Biological Studies of Dodecameric Cationic Antimicrobial Peptides Containing Tetrahydrofuran Amino Acids. Chembiochem 2020; 21:2518-2526. [PMID: 32297461 DOI: 10.1002/cbic.202000163] [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: 03/16/2020] [Revised: 04/13/2020] [Indexed: 11/05/2022]
Abstract
We report here a concise route to synthesize various stereoisomers of tetrahydrofuran amino acids (TAAs) and the synthesis of TAA-containing linear cationic dodecapeptides. Some of these linear peptides show slightly better antimicrobial activities than their tetra- and octameric congeners, but no activity against Mycobacterium tuberculosis, for which octapeptides exhibited by far the best results; this implies that antibacterial activity is dependent on the length of these linear peptides. All the dodecapeptides described here were found to be toxic in nature against Vero cells. The study helps to delineate the optimal length of this series of linear peptides and select potential leads in the development of novel cationic peptide-based antibiotics.
Collapse
Affiliation(s)
- Uttam Ghosh
- Department of Organic Chemistry, Indian Institution of Science, Bengaluru, 560012, Karnataka, India
| | - Isha Soni
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Grace Kaul
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Priyanka Trivedi
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Vinita Chaturvedi
- Division of Biochemistry, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Sidharth Chopra
- Division of Microbiology, CSIR-Central Drug Research Institute, Lucknow, 226031, Uttar Pradesh, India
| | - Tushar Kanti Chakraborty
- Department of Organic Chemistry, Indian Institution of Science, Bengaluru, 560012, Karnataka, India
| |
Collapse
|
17
|
Rathman BM, Allen JL, Shaw LN, Del Valle JR. Synthesis and biological evaluation of backbone-aminated analogues of gramicidin S. Bioorg Med Chem Lett 2020; 30:127283. [PMID: 32527462 DOI: 10.1016/j.bmcl.2020.127283] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/18/2020] [Accepted: 05/20/2020] [Indexed: 01/26/2023]
Abstract
We report the parallel synthesis of gramicidin S derivatives featuring backbone N-amino substituents. Analogues were prepared by incorporation of N-amino dipeptide subunits on solid support. Nine backbone-aminated macrocycles were evaluated for growth inhibitory activity against ESKAPE pathogens and hemolytic activity against human red blood cells. Diamination of the Orn residues in the β-strand region of gramicidin S was found to enhance broad-spectrum antimicrobial activity without a corresponding increase in hemolytic activity.
Collapse
Affiliation(s)
- Benjamin M Rathman
- Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, IN 46556, United States
| | - Jessie L Allen
- Department of Cell Biology, Microbiology & Molecular Biology, University of South Florida, Tampa, FL 33620, United States
| | - Lindsey N Shaw
- Department of Cell Biology, Microbiology & Molecular Biology, University of South Florida, Tampa, FL 33620, United States
| | - Juan R Del Valle
- Department of Chemistry & Biochemistry, University of Notre Dame, Notre Dame, IN 46556, United States.
| |
Collapse
|
18
|
Frenkel-Pinter M, Samanta M, Ashkenasy G, Leman LJ. Prebiotic Peptides: Molecular Hubs in the Origin of Life. Chem Rev 2020; 120:4707-4765. [PMID: 32101414 DOI: 10.1021/acs.chemrev.9b00664] [Citation(s) in RCA: 148] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The fundamental roles that peptides and proteins play in today's biology makes it almost indisputable that peptides were key players in the origin of life. Insofar as it is appropriate to extrapolate back from extant biology to the prebiotic world, one must acknowledge the critical importance that interconnected molecular networks, likely with peptides as key components, would have played in life's origin. In this review, we summarize chemical processes involving peptides that could have contributed to early chemical evolution, with an emphasis on molecular interactions between peptides and other classes of organic molecules. We first summarize mechanisms by which amino acids and similar building blocks could have been produced and elaborated into proto-peptides. Next, non-covalent interactions of peptides with other peptides as well as with nucleic acids, lipids, carbohydrates, metal ions, and aromatic molecules are discussed in relation to the possible roles of such interactions in chemical evolution of structure and function. Finally, we describe research involving structural alternatives to peptides and covalent adducts between amino acids/peptides and other classes of molecules. We propose that ample future breakthroughs in origin-of-life chemistry will stem from investigations of interconnected chemical systems in which synergistic interactions between different classes of molecules emerge.
Collapse
Affiliation(s)
- Moran Frenkel-Pinter
- NSF/NASA Center for Chemical Evolution, https://centerforchemicalevolution.com/.,School of Chemistry & Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Mousumi Samanta
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Gonen Ashkenasy
- Department of Chemistry, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Luke J Leman
- NSF/NASA Center for Chemical Evolution, https://centerforchemicalevolution.com/.,Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037, United States
| |
Collapse
|
19
|
Majid A, Naz F, Khaskheli MH. Structural Plasticity of EAK-16 Peptide Inducing Vesicle Membrane Leakage. Protein Pept Lett 2020; 27:801-807. [PMID: 32003653 DOI: 10.2174/0929866527666200129141116] [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: 08/23/2019] [Revised: 11/11/2019] [Accepted: 11/30/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Ionic complementary peptide EAK-16 has been studies for anticancer drug delivery application. This is a 16 residues, short sequence peptide has ability to trosnform into micro/nanoparticle via self-assembly. However, it is still not clear that how this can bind with cell membrane to induce membrane leakage or delivering their cargo inside cell membrane. OBJECTIVE The main objective of this work was to understand behaviour of secondary structure conformation of peptide in solution and at lipid membrane interfaces and membrane permeability of synthetic ionic complementary peptide EAK-16. The corresponding secondary structure conformation was evaluated. METHODS We performed biophysical investigation to probe the interaction of synthesised ionic complementary peptide (EAK-16) with dimyristoylphospholcholine (DMPC) and dimyristoylphosphoserine (DMPS) membrane interfaces. The folding behaviours of EAK-16 were studied with Circular Dichroism (CD) spectroscopy. Membrane leakage with peptide was confirmed with calcein leakage assay. RESULTS Our finding of this study showed that in aqueous phase EAK-16 was predominantly folded into β-sheets. The temperature could alter the β-sheets. However, in DMPC and DMPS membrane interfaces, EAK-16 adopted helical conformation. EAK-16 has preference in perturbing anionic compared Zwitterionic lipid vesicles. This study proposed that hydrophobic grooves of EAK-16 might be a key in the association with lipid bilayers. Secondly, a charge distribution of ionic residues would also support the orientation at lipid bilayers. This peptide membrane association would facilitate the membrane destabilisation. CONCLUSION This study demonstrated the supporting evidence that EAK-16 could interact with lipid membranes and conforming to helical structure, while the helical conformation induced the lipid membrane leakage. Overall, this study provides a physical rationale that ionic complementary peptide can be a useful tool for designing and development of novel antibiotics and anticancer agents along its previous drug delivery applications.
Collapse
Affiliation(s)
- Abdul Majid
- Department of Biochemistry, Shah Abdul Latif University, Khairpur, Pakistan
| | - Farah Naz
- Department of Biochemistry, Shah Abdul Latif University, Khairpur, Pakistan
| | | |
Collapse
|
20
|
Berditsch M, Afonin S, Reuster J, Lux H, Schkolin K, Babii O, Radchenko DS, Abdullah I, William N, Middel V, Strähle U, Nelson A, Valko K, Ulrich AS. Supreme activity of gramicidin S against resistant, persistent and biofilm cells of staphylococci and enterococci. Sci Rep 2019; 9:17938. [PMID: 31784584 PMCID: PMC6884456 DOI: 10.1038/s41598-019-54212-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/06/2019] [Indexed: 01/03/2023] Open
Abstract
Three promising antibacterial peptides were studied with regard to their ability to inhibit the growth and kill the cells of clinical strains of Staphylococcus aureus, Enterococcus faecalis and Enterococcus faecium. The multifunctional gramicidin S (GS) was the most potent, compared to the membranotropic temporin L (TL), being more effective than the innate-defence regulator IDR-1018 (IDR). These activities, compared across 16 strains as minimal bactericidal and minimal inhibitory concentrations (MIC), are independent of bacterial resistance pattern, phenotype variations and/or biofilm-forming potency. For S. aureus strains, complete killing is accomplished by all peptides at 5 × MIC. For E. faecalis strains, only GS exhibits a rapid bactericidal effect at 5 × MIC, while TL and IDR require higher concentrations. The biofilm-preventing activities of all peptides against the six strains with the largest biofilm biomass were compared. GS demonstrates the lowest minimal biofilm inhibiting concentrations, whereas TL and IDR are consistently less effective. In mature biofilms, only GS completely kills the cells of all studied strains. We compare the physicochemical properties, membranolytic activities, model pharmacokinetics and eukaryotic toxicities of the peptides and explain the bactericidal, antipersister and antibiofilm activities of GS by its elevated stability, pronounced cell-penetration ability and effective utilization of multiple modes of antibacterial action.
Collapse
Affiliation(s)
- Marina Berditsch
- Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry (IOC), Karlsruhe, 76131, Germany
| | - Sergii Afonin
- KIT, Institute of Biological Interfaces (IBG-2), Karlsruhe, 76021, Germany
| | - Jennifer Reuster
- Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry (IOC), Karlsruhe, 76131, Germany
| | - Hannah Lux
- Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry (IOC), Karlsruhe, 76131, Germany
| | - Kristina Schkolin
- Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry (IOC), Karlsruhe, 76131, Germany
| | - Oleg Babii
- KIT, Institute of Biological Interfaces (IBG-2), Karlsruhe, 76021, Germany
| | - Dmytro S Radchenko
- Enamine Ltd., Kyiv, 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine
| | - Issah Abdullah
- University College London (UCL), UCL School of Pharmacy, London, WC1N 1AX, United Kingdom
| | - Nicola William
- University of Leeds, School of Chemistry, Leeds, LS9 2JT, United Kingdom
| | - Volker Middel
- KIT, Institute of Toxicology and Genetics (ITG), Eggenstein-Leopoldshafen, 76344, Germany
| | - Uwe Strähle
- KIT, Institute of Toxicology and Genetics (ITG), Eggenstein-Leopoldshafen, 76344, Germany
| | - Andrew Nelson
- University of Leeds, School of Chemistry, Leeds, LS9 2JT, United Kingdom
| | - Klara Valko
- University College London (UCL), UCL School of Pharmacy, London, WC1N 1AX, United Kingdom
| | - Anne S Ulrich
- Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry (IOC), Karlsruhe, 76131, Germany. .,KIT, Institute of Biological Interfaces (IBG-2), Karlsruhe, 76021, Germany.
| |
Collapse
|
21
|
Peddie V, Abell AD. Photocontrol of peptide secondary structure through non-azobenzene photoswitches. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2019.05.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
22
|
Talandashti R, Mahdiuni H, Jafari M, Mehrnejad F. Molecular Basis for Membrane Selectivity of Antimicrobial Peptide Pleurocidin in the Presence of Different Eukaryotic and Prokaryotic Model Membranes. J Chem Inf Model 2019; 59:3262-3276. [DOI: 10.1021/acs.jcim.9b00245] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Reza Talandashti
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, P.O. Box 14395-1561, Tehran, Iran
| | - Hamid Mahdiuni
- Bioinformatics Lab., Department of Biology, School of Sciences, Razi University, P.O. Box 67149-67346, Kermanshah, Iran
| | - Majid Jafari
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, P.O. Box 14395-1561, Tehran, Iran
| | - Faramarz Mehrnejad
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, P.O. Box 14395-1561, Tehran, Iran
| |
Collapse
|
23
|
Affiliation(s)
- Hye Been Koo
- Department of ChemistrySchool of Physics and Chemistry, Gwangju Institute of Science and Technology Gwangju Republic of Korea
| | - Jiwon Seo
- Department of ChemistrySchool of Physics and Chemistry, Gwangju Institute of Science and Technology Gwangju Republic of Korea
| |
Collapse
|
24
|
Guan Q, Huang S, Jin Y, Campagne R, Alezra V, Wan Y. Recent Advances in the Exploration of Therapeutic Analogues of Gramicidin S, an Old but Still Potent Antimicrobial Peptide. J Med Chem 2019; 62:7603-7617. [DOI: 10.1021/acs.jmedchem.9b00156] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Qinkun Guan
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P. R. China
| | - Shuhui Huang
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P. R. China
- Jiangxi Maternal and Child Hospital, Nanchang 330006, P. R. China
| | - Yi Jin
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P. R. China
| | - Rémy Campagne
- Faculté des Sciences d’Orsay, Université Paris-Sud, Laboratoire de Méthodologie, Synthèse
et Molécules Thérapeutiques, ICMMO, UMR 8182, CNRS,
Université Paris-Saclay, Bât 410, 91405 Orsay, France
| | - Valérie Alezra
- Faculté des Sciences d’Orsay, Université Paris-Sud, Laboratoire de Méthodologie, Synthèse
et Molécules Thérapeutiques, ICMMO, UMR 8182, CNRS,
Université Paris-Saclay, Bât 410, 91405 Orsay, France
| | - Yang Wan
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, P. R. China
- Faculté des Sciences d’Orsay, Université Paris-Sud, Laboratoire de Méthodologie, Synthèse
et Molécules Thérapeutiques, ICMMO, UMR 8182, CNRS,
Université Paris-Saclay, Bât 410, 91405 Orsay, France
| |
Collapse
|
25
|
Lamade AM, Kenny EM, Anthonymuthu TS, Soysal E, Clark RSB, Kagan VE, Bayır H. Aiming for the target: Mitochondrial drug delivery in traumatic brain injury. Neuropharmacology 2019; 145:209-219. [PMID: 30009835 PMCID: PMC6309489 DOI: 10.1016/j.neuropharm.2018.07.014] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/29/2018] [Accepted: 07/10/2018] [Indexed: 12/13/2022]
Abstract
Mitochondria are a keystone of neuronal function, serving a dual role as sustainer of life and harbinger of death. While mitochondria are indispensable for energy production, a dysregulated mitochondrial network can spell doom for both neurons and the functions they provide. Traumatic brain injury (TBI) is a complex and biphasic injury, often affecting children and young adults. The primary pathological mechanism of TBI is mechanical, too rapid to be mitigated by anything but prevention. However, the secondary injury of TBI evolves over hours and days after the initial insult providing a window of opportunity for intervention. As a nexus point of both survival and death during this second phase, targeting mitochondrial pathology in TBI has long been an attractive strategy. Often these attempts are mired by efficacy-limiting unintended off-target effects. Specific delivery to and enrichment of therapeutics at their submitochondrial site of action can reduce deleterious effects and increase potency. Mitochondrial drug localization is accomplished using (1) the mitochondrial membrane potential, (2) affinity of a carrier to mitochondria-specific components (e.g. lipids), (3) piggybacking on the cells own mitochondria trafficking systems, or (4) nanoparticle-based approaches. In this review, we briefly consider the mitochondrial delivery strategies and drug targets that illustrate the promise of these mitochondria-specific approaches in the design of TBI pharmacotherapy. This article is part of the Special Issue entitled "Novel Treatments for Traumatic Brain Injury".
Collapse
Affiliation(s)
- Andrew M Lamade
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, Children's Hospital of Pittsburgh, Pittsburgh, PA, USA; Department of Environmental and Occupational Health, Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Elizabeth M Kenny
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, Children's Hospital of Pittsburgh, Pittsburgh, PA, USA; Department of Environmental and Occupational Health, Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Tamil S Anthonymuthu
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, Children's Hospital of Pittsburgh, Pittsburgh, PA, USA; Department of Environmental and Occupational Health, Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Elif Soysal
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Robert S B Clark
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, Children's Hospital of Pittsburgh, Pittsburgh, PA, USA
| | - Valerian E Kagan
- Department of Environmental and Occupational Health, Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, USA; Laboratory of Navigational Redox Lipidomics in Biomedicine, Department of Human Pathology, IM Sechenov First Moscow State Medical University, Russian Federation
| | - Hülya Bayır
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, Children's Hospital of Pittsburgh, Pittsburgh, PA, USA; Department of Environmental and Occupational Health, Center for Free Radical and Antioxidant Health, University of Pittsburgh, Pittsburgh, PA, USA; Children's Neuroscience Institute, UPMC Children's Hospital of Pittsburgh, Pittsburgh, PA, USA.
| |
Collapse
|
26
|
Palm J, Fuchs K, Stammer H, Schumacher‐Stimpfl A, Milde J. Efficacy and safety of a triple active sore throat lozenge in the treatment of patients with acute pharyngitis: Results of a multi-centre, randomised, placebo-controlled, double-blind, parallel-group trial (DoriPha). Int J Clin Pract 2018; 72:e13272. [PMID: 30329199 PMCID: PMC6282512 DOI: 10.1111/ijcp.13272] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 09/15/2018] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE The aim of this multi-centre, randomised, double-blind, placebo-controlled trial was to compare the efficacy and safety of the fixed combination of 0.5 mg tyrothricin, 1.0 mg benzalkonium chloride, and 1.5 mg benzocaine (study drug marketed as Dorithricin® ) in repeat dosing for 3 days to match placebo lozenges in the treatment of acute pharyngitis in adults. METHODS Patients (pts, aged ≥18 years) with acute pharyngitis, ie, non-streptococcal sore throat and moderate-to-severe pain (intensity NRS ≥ 7; VAS ≥ 50) were assigned to study drug (n = 160) or matching placebo (n = 161). Efficacy was assessed by investigator for 2 hours post initial dose (p.i.d.), and 3 days later (Visit 2). Primary efficacy endpoint was the complete resolution of throat pain and difficulty in swallowing at Visit 2 (3 days p.i.d.). Safety and local tolerability were also assessed. RESULTS Seventy-two hours (p.i.d.), complete resolution of throat pain and difficulty in swallowing were achieved by 44.6% patients on study drug compared with 27.2% patients on placebo (difference 17.4% (CI [5.8%; 29.7%]; 64% improvement [GEE, P = 0.0022]). Until 2 hours p.i.d., reduction in symptoms was better with study drug (P < 0.005). Treatment satisfaction was higher with study drug (patients'/investigators' assessment (78.9%/78.9% vs 55.0%/55.6% for placebo) and was well tolerated, overall safety profile was comparable to placebo. CONCLUSION The strength of this randomised controlled trial lies in the endpoint of complete remission after 3 days p.i.d., especially in the light of other trials addressing acute pharyngitis. The results of this study show a significant benefit of the study drug over placebo in the treatment of acute pharyngitis. Local treatment with the fixed combination (0.5 mg tyrothricin, 1.0 mg benzalkonium chloride, and 1.5 mg benzocaine) provides a rapid analgesic effect and is effective in relieving both severe throat pain as well as difficulty in swallowing associated with acute pharyngitis leading to a 64% improved complete remission within 72 hours. The triple active combination is a suitable treatment option for patients in the self-management of acute pharyngitis and sore throat. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov, NCT03323528.
Collapse
Affiliation(s)
| | - Katharina Fuchs
- Pharmalog Institut für klinische Forschung GmbHMunichGermany
| | - Holger Stammer
- Pharmalog Institut für klinische Forschung GmbHMunichGermany
| | | | - Jens Milde
- Pharmalog Institut für klinische Forschung GmbHMunichGermany
| | | |
Collapse
|
27
|
The Multifaceted Antibacterial Mechanisms of the Pioneering Peptide Antibiotics Tyrocidine and Gramicidin S. mBio 2018; 9:mBio.00802-18. [PMID: 30301848 PMCID: PMC6178620 DOI: 10.1128/mbio.00802-18] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Cyclic β-sheet decapeptides, such as tyrocidines and gramicidin S, were among the first antibiotics in clinical application. Although they have been used for such a long time, there is virtually no resistance to them, which has led to a renewed interest in this peptide class. Both tyrocidines and gramicidin S are thought to disrupt the bacterial membrane. However, this knowledge is mainly derived from in vitro studies, and there is surprisingly little knowledge about how these long-established antibiotics kill bacteria. Our results shed new light on the antibacterial mechanism of β-sheet peptide antibiotics and explain why they are still so effective and why there is so little resistance to them. Cyclic β-sheet decapeptides from the tyrocidine group and the homologous gramicidin S were the first commercially used antibiotics, yet it remains unclear exactly how they kill bacteria. We investigated their mode of action using a bacterial cytological profiling approach. Tyrocidines form defined ion-conducting pores, induce lipid phase separation, and strongly reduce membrane fluidity, resulting in delocalization of a broad range of peripheral and integral membrane proteins. Interestingly, they also cause DNA damage and interfere with DNA-binding proteins. Despite sharing 50% sequence identity with tyrocidines, gramicidin S causes only mild lipid demixing with minor effects on membrane fluidity and permeability. Gramicidin S delocalizes peripheral membrane proteins involved in cell division and cell envelope synthesis but does not affect integral membrane proteins or DNA. Our results shed a new light on the multifaceted antibacterial mechanisms of these antibiotics and explain why resistance to them is virtually nonexistent.
Collapse
|
28
|
|
29
|
Quan H, Kim Y, Park HC, Yang HC. Effects of phosphatidylserine-containing supported lipid bilayers on the polarization of macrophages. J Biomed Mater Res A 2018; 106:2625-2633. [PMID: 29781181 DOI: 10.1002/jbm.a.36454] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 04/24/2018] [Accepted: 05/11/2018] [Indexed: 12/16/2022]
Abstract
Placement of dental implants initiates inflammatory foreign body response, in which macrophages play a central role and affect the subsequent tissue healing process such as bone formation. The purpose of this study was to fabricate phosphatidylserine (PS)-containing supported lipid bilayers (SLBs) on a titanium surface to regulate the polarization of macrophages, a critical factor that affects following tissue healing and regeneration. The fluorescent recovery after photobleaching images showed that the percentage of PS had a critical influence on the fluidity, and 20% PS had the highest fluidity. Furthermore, more expanded and elongated cells were observed in the SLB-coated groups. transforming growth factor-β1 and vascular endothelial growth factor, the key cytokine markers of M2 macrophage polarization, were increased in the SLB-coated groups, especially in the 20% PS group. Consistently, cells cultured on the SLB-coated titanium exhibited the distribution of CD206+ , which is a M2 macrophage specific maker. The results of this study demonstrated M2 polarization of macrophages on PS-SLB-coated titanium discs, which suggests the application of PS-SLB as an immune-regulating coating material to improve tissue reactions to dental implants. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 2625-2633, 2018.
Collapse
Affiliation(s)
- Hongxuan Quan
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - Yongjoon Kim
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - Hee Chul Park
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea
| | - Hyeong-Cheol Yang
- Department of Dental Biomaterials Science, Dental Research Institute and BK21 Plus Program, School of Dentistry, Seoul National University, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea
| |
Collapse
|
30
|
Yu WQ, Zheng GP, Qiu DW, Yan FC, Liu WZ, Liu WX. Draft genome sequence, disease-resistance genes, and phenotype of a Paenibacillus terrae strain (NK3-4) with the potential to control plant diseases. Genome 2018; 61:725-734. [PMID: 30184440 DOI: 10.1139/gen-2018-0113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Paenibacillus terrae NK3-4 is a plant growth-promoting rhizobacterium that may be useful for controlling plant diseases. We conducted a genomic analysis and identified the genes mediating antimicrobial functions. Additionally, an extracellular antifungal protein component was isolated and identified. The draft genome sequence was assembled into 54 contigs, with 5 458 568 bp and a G+C content of 47%. Moreover, 4 690 015 bp encoded 5090 proteins, 7 rRNAs, and 54 tRNAs. Forty-four genes involved in antimicrobial functions were detected. They mainly encode 19 non-ribosomal peptide synthetases (NRPSs); one polyketide synthase/NRPSs hybrid enzyme; four Zn-dependent metalloproteases; three antilisterial bacteriocin subtilosin biosynthesis proteins (AlbA); four serine proteases; five pectate lyases; three beta-glucanases; and four 1,4-beta-xylanases. These include four novel NRPSs that have not been found in any species of Paenibacillus. Furthermore, five proteins exhibiting antifungal activity were identified from the antifungal extracellular protein component based on MS/MS and the strain NK3-4 predicted protein library. On the basis of these features, we propose that strain NK3-4 represents a promising biocontrol agent for protecting plant from diseases. The draft genome sequence described herein may provide the genetic basis for the characterization of the molecular mechanisms underlying the biocontrol functions. It may also facilitate the development of rational strategies for improving the strain.
Collapse
Affiliation(s)
- Wen Qing Yu
- a College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China.,b Heilongjiang Academy of Land Reclamation, Haerbin, Heilongjiang Province, 150038, China.,c Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100094, China
| | - Gui Ping Zheng
- a College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing, 163319, Heilongjiang, China
| | - De Wen Qiu
- c Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100094, China
| | - Feng Chao Yan
- b Heilongjiang Academy of Land Reclamation, Haerbin, Heilongjiang Province, 150038, China
| | - Wen Zhi Liu
- b Heilongjiang Academy of Land Reclamation, Haerbin, Heilongjiang Province, 150038, China
| | - Wan Xue Liu
- c Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100094, China
| |
Collapse
|
31
|
Wan Y, Stanovych A, Gori D, Zirah S, Kouklovsky C, Alezra V. β,γ-diamino acids as building blocks for new analogues of Gramicidin S: Synthesis and biological activity. Eur J Med Chem 2018; 149:122-128. [DOI: 10.1016/j.ejmech.2018.02.053] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 02/05/2018] [Accepted: 02/16/2018] [Indexed: 01/15/2023]
|
32
|
Antimicrobial peptides produced by Brevibacillus spp.: structure, classification and bioactivity: a mini review. World J Microbiol Biotechnol 2018; 34:57. [DOI: 10.1007/s11274-018-2437-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 03/22/2018] [Indexed: 10/17/2022]
|
33
|
IR spectroscopy analysis of pancreatic lipase-related protein 2 interaction with phospholipids: 1. Discriminative recognition of mixed micelles versus liposomes. Chem Phys Lipids 2018; 211:52-65. [DOI: 10.1016/j.chemphyslip.2017.02.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/27/2017] [Accepted: 02/20/2017] [Indexed: 12/28/2022]
|
34
|
Singh G, Azmi S, Ghosh JK, Ampapathi RS, Pal S. Synthesis and Conformational Studies of Taa-Containingo-Nitrobenzenesulfonamide- (o-Nosyl-) Protected GS Analogs to Prove the Importance of 6RStereochemistry of Taa over 6S. ChemistrySelect 2018. [DOI: 10.1002/slct.201800003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Gajendra Singh
- NMR Research Centre; Division of SAIF; CSIR-Central Drug Research Institute; Lucknow 226031 India
- Academy of Scientific and Innovative Research; New Delhi 110001 India
| | - Sarfuddin Azmi
- Molecular and Structural Biology Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
- Present Address: Research Centre; Prince Sultan Military Medical City, Riyadh, Kingdom of; Saudi Arabia
| | - Jimut Kanti Ghosh
- Molecular and Structural Biology Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
| | - Ravi Sankar Ampapathi
- NMR Research Centre; Division of SAIF; CSIR-Central Drug Research Institute; Lucknow 226031 India
- Academy of Scientific and Innovative Research; New Delhi 110001 India
| | - Sudip Pal
- Medicinal & Process Chemistry Division; CSIR-Central Drug Research Institute; Lucknow 226031 India
- Department of Chemistry, School of Physical Sciences; Sikkim University (A Central University); Gangtok 737102 India
| |
Collapse
|
35
|
Reddy DN, Singh S, Ho CMW, Patel J, Schlesinger P, Rodgers S, Doctor A, Marshall GR. Design, synthesis, and biological evaluation of stable β 6.3-Helices: Discovery of non-hemolytic antibacterial peptides. Eur J Med Chem 2018; 149:193-210. [PMID: 29501941 DOI: 10.1016/j.ejmech.2018.02.057] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 01/26/2018] [Accepted: 02/16/2018] [Indexed: 11/25/2022]
Abstract
Gramicidin A, a topical antibiotic made from alternating L and D amino acids, is characterized by its wide central pore; upon insertion into membranes, it forms channels that disrupts ion gradients. We present helical peptidomimetics with this characteristic wide central pore that have been designed to mimic gramicidin A channels. Mimetics were designed using molecular modeling focused on oligomers of heterochiral dipeptides of proline analogs, in particular azaproline (AzPro). Molecular Dynamics simulations in water confirmed the stability of the designed helices. A sixteen-residue Formyl-(AzPro-Pro)8-NHCH2CH2OH helix was synthesized as well as a full thirty-two residue Cbz-(AzPro-Pro)16-OtBu channels. No liposomal lysis activity was observed suggesting lack of channel formation, possibly due to inappropriate hydrogen-bonding interactions in the membrane. These peptidomimetics also did not hemolyze red blood cells, unlike gramicidin A.
Collapse
Affiliation(s)
- Damodara N Reddy
- Department of Biochemistry & Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110, USA.
| | - Sukrit Singh
- Department of Biochemistry & Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Chris M W Ho
- Department of Biochemistry & Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Janki Patel
- Department of Biochemistry & Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Paul Schlesinger
- Department of Cell Biology & Physiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Stephen Rodgers
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Allan Doctor
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Garland R Marshall
- Department of Biochemistry & Molecular Biophysics, Washington University School of Medicine, St. Louis, MO 63110, USA.
| |
Collapse
|
36
|
Phambu N, Almarwani B, Alwadai A, Phambu EN, Faciane N, Marion C, Sunda-Meya A. Calorimetric and Spectroscopic Studies of the Effects of the Cell Penetrating Peptide Pep-1 and the Antimicrobial Peptide Combi-2 on Vesicles Mimicking Escherichia coli Membrane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12908-12915. [PMID: 29039950 DOI: 10.1021/acs.langmuir.7b01910] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The objective of this study is to measure and compare the effects of the cell penetrating peptide (CPP) Pep-1 and the antimicrobial peptide (AMP) combi-2 on vesicles of membranes mimicking Escherichia coli (E. coli). To characterize the effects of Pep-1 and combi-2 on E. coli membrane vesicles, a combination of five biophysical techniques was employed: fluorescence, infrared, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) techniques. Upon addition of E. coli membranes, tryptophan fluorescence intensity of Pep-1 showed a sudden blue-shift and decreased in a nonconcentration-dependent manner while the intensity of combi-2 decreased in a concentration-dependent manner, most significantly for a very low peptide-to-lipid ratio of 1:40. Complexes of Pep-1 and combi-2 with E. coli membrane mimicking vesicles having shown a significant blue-shift in fluorescence intensity were then prepared and studied in freeze-dried states. IR results indicate that Pep-1 and combi-2 adopt a major 310-helix structure in the presence of E. coli membrane mimicking vesicles at low peptide concentration. Pep-1 and combi-2 have a similar effect on E. coli membrane mimicking vesicles at low concentration even though combi-2 is in the interfacial region of the bilayer while Pep-1 is located between the interfacial region and the hydrophobic region. Combi-2 at low concentration acts as a CPP. TGA and DSC results reveal that combi-2 has a stabilizing effect on E. coli at any concentration while Pep-1 stabilizes the E. coli membrane only at high concentration. Both peptides show a preferential interaction with one of the anionic lipids leading to clustering in E. coli membrane. SEM images reveal that Pep-1 and combi-2 form superstructures including fibrils in the presence of E. coli membrane mimicking vesicles. Calorimetric and spectroscopic techniques may be used in a complementary way with imaging techniques to gain more insights into peptide-lipid interactions.
Collapse
Affiliation(s)
- Nsoki Phambu
- Department of Chemistry, Tennessee State University , Nashville, Tennessee 37209, United States
| | - Bashiyar Almarwani
- Department of Chemistry, Tennessee State University , Nashville, Tennessee 37209, United States
| | - Amjad Alwadai
- Department of Chemistry, Tennessee State University , Nashville, Tennessee 37209, United States
| | - Esther N Phambu
- Department of Chemical & Biomolecular Engineering, New York University , Brooklyn, New York 11201, United States
| | - Natalie Faciane
- Department of Physics and Computer Science, Xavier University of Louisiana , New Orleans, Louisiana 70125, United States
| | - Carmel Marion
- Department of Physics and Computer Science, Xavier University of Louisiana , New Orleans, Louisiana 70125, United States
| | - Anderson Sunda-Meya
- Department of Physics and Computer Science, Xavier University of Louisiana , New Orleans, Louisiana 70125, United States
| |
Collapse
|
37
|
Priem C, Wuttke A, Berditsch M, Ulrich AS, Geyer A. Scaling the Amphiphilic Character and Antimicrobial Activity of Gramicidin S by Dihydroxylation or Ketal Formation. J Org Chem 2017; 82:12366-12376. [DOI: 10.1021/acs.joc.7b02177] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christoph Priem
- Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - André Wuttke
- Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Marina Berditsch
- Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Anne S. Ulrich
- Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
| | - Armin Geyer
- Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| |
Collapse
|
38
|
Mylonakis E, Podsiadlowski L, Muhammed M, Vilcinskas A. Diversity, evolution and medical applications of insect antimicrobial peptides. Philos Trans R Soc Lond B Biol Sci 2017; 371:rstb.2015.0290. [PMID: 27160593 PMCID: PMC4874388 DOI: 10.1098/rstb.2015.0290] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2016] [Indexed: 12/30/2022] Open
Abstract
Antimicrobial peptides (AMPs) are short proteins with antimicrobial activity. A large portion of known AMPs originate from insects, and the number and diversity of these molecules in different species varies considerably. Insect AMPs represent a potential source of alternative antibiotics to address the limitation of current antibiotics, which has been caused by the emergence and spread of multidrug-resistant pathogens. To get more insight into AMPs, we investigated the diversity and evolution of insect AMPs by mapping their phylogenetic distribution, allowing us to predict the evolutionary origins of selected AMP families and to identify evolutionarily conserved and taxon-specific families. Furthermore, we highlight the use of the nematode Caenorhabditis elegans as a whole-animal model in high-throughput screening methods to identify AMPs with efficacy against human pathogens, including Acinetobacter baumanii and methicillin-resistant Staphylococcus aureus. We also discuss the potential medical applications of AMPs, including their use as alternatives for conventional antibiotics in ectopic therapies, their combined use with antibiotics to restore the susceptibility of multidrug-resistant pathogens, and their use as templates for the rational design of peptidomimetic drugs that overcome the disadvantages of therapeutic peptides. The article is part of the themed issue ‘Evolutionary ecology of arthropod antimicrobial peptides’.
Collapse
Affiliation(s)
- Eleftherios Mylonakis
- Division of Infectious Disease, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI, USA
| | - Lars Podsiadlowski
- Institute of Evolutionary Biology and Zooecology, University of Bonn, Bonn, Germany
| | - Maged Muhammed
- Division of Infectious Disease, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI, USA
| | - Andreas Vilcinskas
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Giessen, Germany
| |
Collapse
|
39
|
Antimicrobial Electrospun Fibers of Polyester Loaded with Engineered Cyclic Gramicidin Analogues. FIBERS 2017. [DOI: 10.3390/fib5030034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
40
|
Jafari M, Mehrnejad F, Aghdami R, Chaparzadeh N, Razaghi Moghadam Kashani Z, Doustdar F. Identification of the Crucial Residues in the Early Insertion of Pardaxin into Different Phospholipid Bilayers. J Chem Inf Model 2017; 57:929-941. [DOI: 10.1021/acs.jcim.6b00693] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Majid Jafari
- Department of Life Sciences Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran 14395-1561, Iran
| | - Faramarz Mehrnejad
- Department of Life Sciences Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran 14395-1561, Iran
- School of Biological Sciences, Institute for Research in Fundamental Sciences (IPM), Tehran 19395-5746, Iran
| | - Raheleh Aghdami
- Department of Biology, Faculty of Science, Azarbaijan Shahid Madani University, Tabriz 53714-161, Iran
| | - Nader Chaparzadeh
- Department of Biology, Faculty of Science, Azarbaijan Shahid Madani University, Tabriz 53714-161, Iran
| | - Zahra Razaghi Moghadam Kashani
- Department of Life Sciences Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran 14395-1561, Iran
| | - Farahnoosh Doustdar
- Department of Microbiology, Faculty of
Medicine, Shahid Beheshti University of Medical Sciences, Tehran 19839-63113, Iran
| |
Collapse
|
41
|
Harrison PL, Heath GR, Johnson BR, Abdel-Rahman MA, Strong PN, Evans SD, Miller K. Phospholipid dependent mechanism of smp24, an α-helical antimicrobial peptide from scorpion venom. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:2737-2744. [DOI: 10.1016/j.bbamem.2016.07.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 07/06/2016] [Accepted: 07/27/2016] [Indexed: 12/27/2022]
|
42
|
Wei XB, Wu RJ, Si DY, Liao XD, Zhang LL, Zhang RJ. Novel Hybrid Peptide Cecropin A (1-8)-LL37 (17-30) with Potential Antibacterial Activity. Int J Mol Sci 2016; 17:ijms17070983. [PMID: 27367675 PMCID: PMC4964367 DOI: 10.3390/ijms17070983] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 06/13/2016] [Accepted: 06/16/2016] [Indexed: 11/17/2022] Open
Abstract
Hybridizing different antimicrobial peptides (AMPs) is a particularly successful approach to obtain novel AMPs with increased antimicrobial activity but minimized cytotoxicity. The hybrid peptide cecropin A (1–8)-LL37 (17–30) (C-L) combining the hydrophobic N-terminal fragment of cecropin A (C) with the core antimicrobial fragment of LL37 (L) was designed and synthesized. C-L showed higher antibacterial activity against all indicator strains than C and L, and no hemolytic activity to sheep erythrocytes was observed. C-L kills bacterial cells and causes disruption of surface structure, as determined by scanning electron microscopy. Synergistic effects were observed in the combination of C-L with several antibiotics (chloramphenicol, thiamphenicol, or neomycin sulfate) against Escherichia coli and Staphylococcus aureus.
Collapse
Affiliation(s)
- Xu-Biao Wei
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Ru-Juan Wu
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Da-Yong Si
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Xiu-Dong Liao
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Lu-Lu Zhang
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Ri-Jun Zhang
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| |
Collapse
|
43
|
A synthetic antimicrobial peptide BTD-S expressed in Arabidopsis thaliana confers enhanced resistance to Verticillium dahliae. Mol Genet Genomics 2016; 291:1647-61. [PMID: 27138919 DOI: 10.1007/s00438-016-1209-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 04/19/2016] [Indexed: 12/13/2022]
Abstract
BTD-S is a synthetic non-cyclic θ-defensin derivative which was previously designed in our laboratory based on baboon θ-defensins (BTDs). It shows robust antimicrobial activity against economically important phytopathogen, Verticillium dahliae. Here, we deduced the coding nucleotide sequence of BTD-S and introduced the gene into wild-type (ecotype Columbia-0) Arabidopsis thaliana plants. Results demonstrated that BTD-S-transgenic lines displayed in bioassays inhibitory effects on the growth of V. dahliae in vivo and in vitro. Based on symptom severity, enhanced resistance was found in a survey of BTD-S-transgenic lines. Besides, crude protein extracts from root tissues of BTD-S-transformed plants significantly restricted the growth of fungal hyphae and the germination of conidia. Also, fungal biomass over time determined by real-time PCR demonstrated the overgrowth of V. dahliae in wild-type plants 2-3 weeks after inoculation, while almost no fungal DNA was detected in aerial tissues of their transgenic progenitors. The result suggested that fungus failed to invade and progress acropetally up to establish a systemic infection in BTD-S-transgenic plants. Moreover, the assessment of basal defense responses was performed in the leaves of WT and BTD-S-transgenic plants. The mitigated oxidative stress and low antioxidase level in BTD-S-transgenic plants revealed that BTD-S acts via permeabilizing target microbial membranes, which is in a category different from hypersensitive response-dependent defense. Taken together, our results demonstrate that BTD-S is a promising gene to be explored for transgenic engineering for plant protection against Verticillium wilt.
Collapse
|
44
|
Babii O, Afonin S, Garmanchuk LV, Nikulina VV, Nikolaienko TV, Storozhuk OV, Shelest DV, Dasyukevich OI, Ostapchenko LI, Iurchenko V, Zozulya S, Ulrich AS, Komarov IV. Direct Photocontrol of Peptidomimetics: An Alternative to Oxygen‐Dependent Photodynamic Cancer Therapy. Angew Chem Int Ed Engl 2016; 55:5493-6. [DOI: 10.1002/anie.201600506] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 02/17/2016] [Indexed: 12/21/2022]
Affiliation(s)
- Oleg Babii
- Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Sergii Afonin
- Institute of Biological Interfaces (IBG-2) KIT POB 3640 76021 Karlsruhe Germany
| | | | | | | | | | | | - Olga I. Dasyukevich
- Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology National Academy of Sciences of Ukraine (NASU) vul. Vasylkivska 45 03022 Kyiv Ukraine
| | | | | | | | - Anne S. Ulrich
- Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Germany
- Institute of Biological Interfaces (IBG-2) KIT POB 3640 76021 Karlsruhe Germany
| | - Igor V. Komarov
- Institute of High Technologies (IHT) Taras Shevchenko National University of Kyiv (TSNUK) vul. Volodymyrska 60 01601 Kyiv Ukraine
| |
Collapse
|
45
|
Babii O, Afonin S, Garmanchuk LV, Nikulina VV, Nikolaienko TV, Storozhuk OV, Shelest DV, Dasyukevich OI, Ostapchenko LI, Iurchenko V, Zozulya S, Ulrich AS, Komarov IV. Direct Photocontrol of Peptidomimetics: An Alternative to Oxygen‐Dependent Photodynamic Cancer Therapy. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600506] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Oleg Babii
- Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Sergii Afonin
- Institute of Biological Interfaces (IBG-2) KIT POB 3640 76021 Karlsruhe Germany
| | | | | | | | | | | | - Olga I. Dasyukevich
- Kavetsky Institute of Experimental Pathology, Oncology and Radiobiology National Academy of Sciences of Ukraine (NASU) vul. Vasylkivska 45 03022 Kyiv Ukraine
| | | | | | | | - Anne S. Ulrich
- Institute of Organic Chemistry (IOC) Karlsruhe Institute of Technology (KIT) Fritz-Haber-Weg 6 76131 Karlsruhe Germany
- Institute of Biological Interfaces (IBG-2) KIT POB 3640 76021 Karlsruhe Germany
| | - Igor V. Komarov
- Institute of High Technologies (IHT) Taras Shevchenko National University of Kyiv (TSNUK) vul. Volodymyrska 60 01601 Kyiv Ukraine
| |
Collapse
|
46
|
Pal S, Ghosh U, Ampapathi RS, Chakraborty TK. Recent Studies on Gramicidin S Analog Structure and Antimicrobial Activity. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/7081_2015_188] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
47
|
Enhanced eryptosis following gramicidin exposure. Toxins (Basel) 2015; 7:1396-410. [PMID: 25915718 PMCID: PMC4448154 DOI: 10.3390/toxins7051396] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 03/25/2015] [Accepted: 04/17/2015] [Indexed: 02/06/2023] Open
Abstract
The peptide antibiotic and ionophore gramicidin has previously been shown to trigger apoptosis of nucleated cells. In analogy to apoptosis, the suicidal death of erythrocytes or eryptosis involves cell shrinkage and cell membrane scrambling with phosphatidylserine translocation to the erythrocyte surface. Triggers of eryptosis include oxidative stress, increase of cytosolic Ca2+ activity ([Ca2+]i), and ceramide. The present study explored, whether gramicidin triggers eryptosis. To this end phosphatidylserine exposure at the cell surface was estimated from annexin V binding, cell volume from forward scatter, red blood cell distribution width (RDW) from electronic particle counting, reactive oxidant species (ROS) from 2',7'-dichlorodihydrofluorescein diacetate (DCFDA) fluorescence, [Ca2+]i from Fluo3- and Fluo4 fluorescence, and ceramide abundance from binding of specific antibodies. As a result, a 24 h exposure of human erythrocytes to gramicidin significantly increased the percentage of annexin-V-binding cells (≥1 µg/mL), forward scatter (≥0.5 µg/mL) and hemolysis. Gramicidin enhanced ROS activity, [Ca2+]i and ceramide abundance at the erythrocyte surface. The stimulation of annexin-V-binding by gramicidin was significantly blunted but not abolished by removal of extracellular Ca2+. In conclusion, gramicidin stimulates phospholipid scrambling of the erythrocyte cell membrane, an effect at least partially due to induction of oxidative stress, increase of [Ca2+]i and up-regulation of ceramide abundance. Despite increase of [Ca2+]i, gramicidin increases cell volume and slightly reduces RWD.
Collapse
|
48
|
Solís-Calero C, Ortega-Castro J, Frau J, Muñoz F. Nonenzymatic Reactions above Phospholipid Surfaces of Biological Membranes: Reactivity of Phospholipids and Their Oxidation Derivatives. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:319505. [PMID: 25977746 PMCID: PMC4419266 DOI: 10.1155/2015/319505] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 01/03/2023]
Abstract
Phospholipids play multiple and essential roles in cells, as components of biological membranes. Although phospholipid bilayers provide the supporting matrix and surface for many enzymatic reactions, their inherent reactivity and possible catalytic role have not been highlighted. As other biomolecules, phospholipids are frequent targets of nonenzymatic modifications by reactive substances including oxidants and glycating agents which conduct to the formation of advanced lipoxidation end products (ALEs) and advanced glycation end products (AGEs). There are some theoretical studies about the mechanisms of reactions related to these processes on phosphatidylethanolamine surfaces, which hypothesize that cell membrane phospholipids surface environment could enhance some reactions through a catalyst effect. On the other hand, the phospholipid bilayers are susceptible to oxidative damage by oxidant agents as reactive oxygen species (ROS). Molecular dynamics simulations performed on phospholipid bilayers models, which include modified phospholipids by these reactions and subsequent reactions that conduct to formation of ALEs and AGEs, have revealed changes in the molecular interactions and biophysical properties of these bilayers as consequence of these reactions. Then, more studies are desirable which could correlate the biophysics of modified phospholipids with metabolism in processes such as aging and diseases such as diabetes, atherosclerosis, and Alzheimer's disease.
Collapse
Affiliation(s)
- Christian Solís-Calero
- Institut d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma, 07010 Palma, Spain
| | - Joaquín Ortega-Castro
- Institut d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma, 07010 Palma, Spain
| | - Juan Frau
- Institut d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma, 07010 Palma, Spain
| | - Francisco Muñoz
- Institut d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma, 07010 Palma, Spain
| |
Collapse
|
49
|
Roy TK, Kopysov V, Nagornova NS, Rizzo TR, Boyarkin OV, Gerber RB. Conformational Structures of a Decapeptide Validated by First Principles Calculations and Cold Ion Spectroscopy. Chemphyschem 2015; 16:1374-8. [DOI: 10.1002/cphc.201500085] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Indexed: 11/11/2022]
|
50
|
Pal S, Singh G, Singh S, Tripathi JK, Ghosh JK, Sinha S, Ampapathi RS, Chakraborty TK. Tetrahydrofuran amino acid-containing gramicidin S analogues with improved biological profiles. Org Biomol Chem 2015; 13:6789-802. [DOI: 10.1039/c5ob00622h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Replacement of thed-Phe-Pro units of GS with novel C6-Bn-substituted tetrahydrofuran amino acid minimized its cytotoxicity while preserving its antimicrobial activity, with a few analogs showing selective anti-TB activity as well.
Collapse
Affiliation(s)
- Sudip Pal
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Gajendra Singh
- Centre for Nuclear Magnetic Resonance
- SAIF
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Shyam Singh
- Biochemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Jitendra Kumar Tripathi
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Jimut Kanti Ghosh
- Molecular and Structural Biology Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Sudhir Sinha
- Biochemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Ravi Sankar Ampapathi
- Centre for Nuclear Magnetic Resonance
- SAIF
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
| | - Tushar Kanti Chakraborty
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow-226031
- India
- Department of Organic Chemistry
| |
Collapse
|