1
|
Zhang P, Ye X, Wang JCK, Baddock HT, Jensvold Z, Foe IT, Loas A, Eaton DL, Hao Q, Nile AH, Pentelute BL. Reversibly Reactive Affinity Selection-Mass Spectrometry Enables Identification of Covalent Peptide Binders. J Am Chem Soc 2024; 146:15627-15639. [PMID: 38771982 DOI: 10.1021/jacs.4c05571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Covalent peptide binders have found applications as activity-based probes and as irreversible therapeutic inhibitors. Currently, there is no rapid, label-free, and tunable affinity selection platform to enrich covalent reactive peptide binders from synthetic libraries. We address this challenge by developing a reversibly reactive affinity selection platform termed ReAct-ASMS enabled by tandem high-resolution mass spectrometry (MS/MS) to identify covalent peptide binders to native protein targets. It uses mixed disulfide-containing peptides to build reversible peptide-protein conjugates that can enrich for covalent variants, which can be sequenced by MS/MS after reduction. Using this platform, we identified covalent peptide binders against two oncoproteins, human papillomavirus 16 early protein 6 (HPV16 E6) and peptidyl-prolyl cis-trans isomerase NIMA-interacting 1 protein (Pin1). The resulting peptide binders efficiently and selectively cross-link Cys58 of E6 at 37 °C and Cys113 of Pin1 at room temperature, respectively. ReAct-ASMS enables the identification of highly selective covalent peptide binders for diverse molecular targets, introducing an applicable platform to assist preclinical therapeutic development pipelines.
Collapse
Affiliation(s)
- Peiyuan Zhang
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Xiyun Ye
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - John C K Wang
- Calico Life Sciences LLC, 1170 Veterans Boulevard, South San Francisco, California 94080, United States
| | - Hannah T Baddock
- Calico Life Sciences LLC, 1170 Veterans Boulevard, South San Francisco, California 94080, United States
| | - Zena Jensvold
- Calico Life Sciences LLC, 1170 Veterans Boulevard, South San Francisco, California 94080, United States
| | - Ian T Foe
- Calico Life Sciences LLC, 1170 Veterans Boulevard, South San Francisco, California 94080, United States
| | - Andrei Loas
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Dan L Eaton
- Calico Life Sciences LLC, 1170 Veterans Boulevard, South San Francisco, California 94080, United States
| | - Qi Hao
- Calico Life Sciences LLC, 1170 Veterans Boulevard, South San Francisco, California 94080, United States
| | - Aaron H Nile
- Calico Life Sciences LLC, 1170 Veterans Boulevard, South San Francisco, California 94080, United States
| | - Bradley L Pentelute
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- The Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, 500 Main Street, Cambridge, Massachusetts 02142, United States
- Center for Environmental Health Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Broad Institute of MIT and Harvard, 415 Main Street, Cambridge, Massachusetts 02142, United States
| |
Collapse
|
2
|
Wang R, Wang T, Zhuo L, Wei J, Fu X, Zou Q, Yao X. Diff-AMP: tailored designed antimicrobial peptide framework with all-in-one generation, identification, prediction and optimization. Brief Bioinform 2024; 25:bbae078. [PMID: 38446739 PMCID: PMC10939340 DOI: 10.1093/bib/bbae078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/25/2024] [Accepted: 02/08/2024] [Indexed: 03/08/2024] Open
Abstract
Antimicrobial peptides (AMPs), short peptides with diverse functions, effectively target and combat various organisms. The widespread misuse of chemical antibiotics has led to increasing microbial resistance. Due to their low drug resistance and toxicity, AMPs are considered promising substitutes for traditional antibiotics. While existing deep learning technology enhances AMP generation, it also presents certain challenges. Firstly, AMP generation overlooks the complex interdependencies among amino acids. Secondly, current models fail to integrate crucial tasks like screening, attribute prediction and iterative optimization. Consequently, we develop a integrated deep learning framework, Diff-AMP, that automates AMP generation, identification, attribute prediction and iterative optimization. We innovatively integrate kinetic diffusion and attention mechanisms into the reinforcement learning framework for efficient AMP generation. Additionally, our prediction module incorporates pre-training and transfer learning strategies for precise AMP identification and screening. We employ a convolutional neural network for multi-attribute prediction and a reinforcement learning-based iterative optimization strategy to produce diverse AMPs. This framework automates molecule generation, screening, attribute prediction and optimization, thereby advancing AMP research. We have also deployed Diff-AMP on a web server, with code, data and server details available in the Data Availability section.
Collapse
Affiliation(s)
- Rui Wang
- School of Data Science and Artificial Intelligence, Wenzhou University of Technology, 325000 Wenzhou, China
| | - Tao Wang
- School of Data Science and Artificial Intelligence, Wenzhou University of Technology, 325000 Wenzhou, China
| | - Linlin Zhuo
- School of Data Science and Artificial Intelligence, Wenzhou University of Technology, 325000 Wenzhou, China
| | - Jinhang Wei
- School of Data Science and Artificial Intelligence, Wenzhou University of Technology, 325000 Wenzhou, China
| | - Xiangzheng Fu
- College of Computer Science and Electronic Engineering, Hunan University, 410012 Changsha, China
| | - Quan Zou
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, 611730 Chengdu, China
| | - Xiaojun Yao
- Faculty of Applied Sciences, Macao Polytechnic University, 999078 Macao, China
| |
Collapse
|
3
|
Hao Y, Teng D, Mao R, Yang N, Wang J. Site Mutation Improves the Expression and Antimicrobial Properties of Fungal Defense. Antibiotics (Basel) 2023; 12:1283. [PMID: 37627703 PMCID: PMC10451632 DOI: 10.3390/antibiotics12081283] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/21/2023] [Accepted: 07/29/2023] [Indexed: 08/27/2023] Open
Abstract
Although antimicrobial peptides (AMPs) have highly desirable intrinsic characteristics in their commercial product development as new antimicrobials, the limitations of AMPs from experimental to scale development include the low oral bioavailability, and high production costs due to inadequate in vitro/in vivo gene expression- and low scale. Plectasin has good bactericidal activity against Staphylococcus and Streptococcus, and the selective bactericidal activity greatly reduces the damage to the micro-ecosystem when applied in vivo. However, its expression level was relatively low (748.63 mg/L). In view of these situations, this study will optimize and modify the structure of Plectasin, hoping to obtain candidates with high expression, no/low toxicity, and maintain desirable antibacterial activity. Through sequence alignment, Plectasin was used as a template to introduce the degenerate bases, and the screening library was constructed. After three different levels of screening, the candidate sequence PN7 was obtained, and its total protein yield in the supernatant was 5.53 g/L, with the highest value so far for the variants or constructs from the same ancestor source. PN7 had strong activity against several species of Gram-positive bacteria (MIC value range 1~16 μg/mL). It was relatively stable in various conditions in vitro; in addition, the peptide showed no toxicity to mice for 1 week after intraperitoneal injection. Meanwhile, PN7 kills Staphylococcus aureus ATCC 43300 with a mode of a quicker (>99% S. aureus was killed within 2 h, whereas vancomycin at 2× MIC was 8 h.) and longer PAE period. The findings indicate that PN7 may be a novel promising antimicrobial agent, and this study also provides a model or an example for the design, modification, or reconstruction of novel AMPs and their derivatives.
Collapse
Affiliation(s)
- Ya Hao
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Da Teng
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Ruoyu Mao
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Na Yang
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| | - Jianhua Wang
- Gene Engineering Laboratory, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Innovative Team of Antimicrobial Peptides and Alternatives to Antibiotics, Feed Research Institute, Chinese Academy of Agricultural Sciences, 12 Zhongguancun Nandajie St., Haidian District, Beijing 100081, China
- Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs, Beijing 100081, China
| |
Collapse
|
4
|
Design of Membrane Active Peptides Considering Multi-Objective Optimization for Biomedical Application. MEMBRANES 2022; 12:membranes12020180. [PMID: 35207101 PMCID: PMC8880019 DOI: 10.3390/membranes12020180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/21/2022] [Accepted: 01/26/2022] [Indexed: 02/04/2023]
Abstract
A multitude of membrane active peptides exists that divides into subclasses, such as cell penetrating peptides (CPPs) capable to enter eukaryotic cells or antimicrobial peptides (AMPs) able to interact with prokaryotic cell envelops. Peptide membrane interactions arise from unique sequence motifs of the peptides that account for particular physicochemical properties. Membrane active peptides are mainly cationic, often primary or secondary amphipathic, and they interact with membranes depending on the composition of the bilayer lipids. Sequences of these peptides consist of short 5–30 amino acid sections derived from natural proteins or synthetic sources. Membrane active peptides can be designed using computational methods or can be identified in screenings of combinatorial libraries. This review focuses on strategies that were successfully applied to the design and optimization of membrane active peptides with respect to the fact that diverse features of successful peptide candidates are prerequisites for biomedical application. Not only membrane activity but also degradation stability in biological environments, propensity to induce resistances, and advantageous toxicological properties are crucial parameters that have to be considered in attempts to design useful membrane active peptides. Reliable assay systems to access the different biological characteristics of numerous membrane active peptides are essential tools for multi-objective peptide optimization.
Collapse
|
5
|
Brittain WDG, Coxon CR. Perfluoroaryl and Perfluoroheteroaryl Reagents as Emerging New Tools for Peptide Synthesis, Modification and Bioconjugation. Chemistry 2021; 28:e202103305. [PMID: 34762323 PMCID: PMC9299879 DOI: 10.1002/chem.202103305] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Indexed: 12/30/2022]
Abstract
Peptides and proteins are becoming increasingly valuable as medicines, diagnostic agents and as tools for biomedical sciences. Much of this has been underpinned by the emergence of new methods for the manipulation and augmentation of native biomolecules. Perfluoroaromatic reagents are perhaps one of the most diverse and exciting tools with which to modify peptides and proteins, due principally to their nucleophilic substitution chemistry, high electron deficiency and the ability for their reactivity to be tuned towards specific nucleophiles. As discussed in this minireview, in recent years, perfluoroaromatic reagents have found applications as protecting groups or activating groups in peptide synthesis and as orthogonal handles for peptide modification. Furthermore, they have applications in chemoselective ‘tagging’, stapling and bioconjugation of peptides and proteins, as well as tuning of ‘drug‐like’ properties. This review will also explore possible future applications of these reagents in biological chemistry.
Collapse
Affiliation(s)
| | - Christopher R Coxon
- EaStChem School of Chemistry, The University of Edinburgh Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, UK
| |
Collapse
|
6
|
Mercer DK, O'Neil DA. Innate Inspiration: Antifungal Peptides and Other Immunotherapeutics From the Host Immune Response. Front Immunol 2020; 11:2177. [PMID: 33072081 PMCID: PMC7533533 DOI: 10.3389/fimmu.2020.02177] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 08/10/2020] [Indexed: 12/17/2022] Open
Abstract
The purpose of this review is to describe antifungal therapeutic candidates in preclinical and clinical development derived from, or directly influenced by, the immune system, with a specific focus on antimicrobial peptides (AMP). Although the focus of this review is AMP with direct antimicrobial effects on fungi, we will also discuss compounds with direct antifungal activity, including monoclonal antibodies (mAb), as well as immunomodulatory molecules that can enhance the immune response to fungal infection, including immunomodulatory AMP, vaccines, checkpoint inhibitors, interferon and colony stimulating factors as well as immune cell therapies. The focus of this manuscript will be a non-exhaustive review of antifungal compounds in preclinical and clinical development that are based on the principles of immunology and the authors acknowledge the incredible amount of in vitro and in vivo work that has been conducted to develop such therapeutic candidates.
Collapse
|
7
|
|
8
|
Casciaro B, Ghirga F, Quaglio D, Mangoni ML. Inorganic Gold and Polymeric Poly(Lactide-co-glycolide) Nanoparticles as Novel Strategies to Ameliorate the Biological Properties of Antimicrobial Peptides. Curr Protein Pept Sci 2020; 21:429-438. [DOI: 10.2174/1389203720666191203101947] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/22/2019] [Accepted: 10/22/2019] [Indexed: 01/01/2023]
Abstract
Cationic antimicrobial peptides (AMPs) are an interesting class of gene-encoded molecules
endowed with a broad-spectrum of anti-infective activity and immunomodulatory properties. They
represent promising candidates for the development of new antibiotics, mainly due to their membraneperturbing
mechanism of action that very rarely induces microbial resistance. However, bringing
AMPs into the clinical field is hampered by some intrinsic limitations, encompassing low peptide
bioavailability at the target site and high peptide susceptibility to proteolytic degradation. In this regard,
nanotechnologies represent an innovative strategy to circumvent these issues. According to the
literature, a large variety of nanoparticulate systems have been employed for drug-delivery, bioimaging,
biosensors or nanoantibiotics. The possibility of conjugating different types of molecules, including
AMPs, to these systems, allows the production of nanoformulations able to enhance the biological
profile of the compound while reducing its cytotoxicity and prolonging its residence time. In this minireview,
inorganic gold nanoparticles (NPs) and biodegradable polymeric NPs made of poly(lactide-coglycolide)
are described with particular emphasis on examples of the conjugation of AMPs to them, to
highlight the great potential of such nanoformulations as alternative antimicrobials.
Collapse
Affiliation(s)
- Bruno Casciaro
- Center for Life Nano Science, Istituto Italiano di Tecnologia, Rome, Italy
| | - Francesca Ghirga
- Center for Life Nano Science, Istituto Italiano di Tecnologia, Rome, Italy
| | - Deborah Quaglio
- Department of Chemistry and Technology of Drugs, Sapienza University of Rome, Rome, Italy
| | - Maria Luisa Mangoni
- Laboratory affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
| |
Collapse
|
9
|
Judzewitsch PR, Zhao L, Wong EHH, Boyer C. High-Throughput Synthesis of Antimicrobial Copolymers and Rapid Evaluation of Their Bioactivity. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00290] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Peter R. Judzewitsch
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Lily Zhao
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Edgar H. H. Wong
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Cyrille Boyer
- Centre for Advanced Macromolecular Design (CAMD) and Australian Centre for NanoMedicine (ACN), School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| |
Collapse
|
10
|
Meng DM, Lv YJ, Zhao JF, Liu QY, Shi LY, Wang JP, Yang YH, Fan ZC. Efficient production of a recombinant Venerupis philippinarum defensin (VpDef) in Pichia pastoris and characterization of its antibacterial activity and stability. Protein Expr Purif 2018. [PMID: 29524591 DOI: 10.1016/j.pep.2018.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
VpDef is a novel defensin isolated from the clam Venerupis philippinarum. Previously it was expressed in Escherichia coli; however, the E. coli-derived recombinant VpDef did not show effective antimicrobial activity against Staphyloccocus aureus or the Gram-negative bacteria tested. As such, the goal of this study was to design, express, and purify a recombinant VpDef (rVpDef) in Pichia pastoris and to determine its antibacterial potency and stability. A 6.9 KDa rVpDef was successfully expressed as a secreted peptide in P. pastoris, and the amount of rVpDef accumulation was shown to reach as high as approximate 60 μg per 1 ml of culture medium only after an initial optimization was performed. The purified rVpDef demonstrated a broad antibacterial spectrum and was active against six typical common bacteria, both Gram-positive and Gram-negative. A minimal inhibition concentration of as low as 50 μg/ml was observed for rVpDef against the growth of E. coli O157 (ATCC 35150). Moreover, rVpDef was tolerant to temperature shock and proteinase digestion and maintained a high stability over a relatively broad pH range. In addition, rVpDef had a low hemolytic activity against rabbit erythrocytes. Taken together, this study demonstrated that rVpDef could be produced in a large-scale manner in P. pastoris and has a good antibacterial activity and suitable stability. This is the first report on heterologous expression of a biologically active VpDef in P. pastoris, supporting its use for both research and application purposes.
Collapse
Affiliation(s)
- De-Mei Meng
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Institute of Health Biotechnology, International Collaborative Research Center for Health Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China; Key Laboratory of Industrial Fermentation Microbiology (Tianjin University of Science & Technology), Ministry of Education, Tianjin Key Lab of Industrial Microbiology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Yu-Jie Lv
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Institute of Health Biotechnology, International Collaborative Research Center for Health Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Jing-Fang Zhao
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Institute of Health Biotechnology, International Collaborative Research Center for Health Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Qing-Yan Liu
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Institute of Health Biotechnology, International Collaborative Research Center for Health Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Lin-Yue Shi
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Institute of Health Biotechnology, International Collaborative Research Center for Health Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Jun-Ping Wang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Institute of Health Biotechnology, International Collaborative Research Center for Health Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China
| | - Yong-Hai Yang
- Tianjin Haifa Sea Food Industrial Development Co., LTD, People's Republic of China
| | - Zhen-Chuan Fan
- Key Laboratory of Food Nutrition and Safety, Ministry of Education of China, Institute of Health Biotechnology, International Collaborative Research Center for Health Biotechnology, Tianjin University of Science and Technology, Tianjin, 300457, People's Republic of China; Obesita & Algaegen LLC, College Station, TX 77845, USA.
| |
Collapse
|
11
|
ten Brummelhuis N, Wilke P, Börner HG. Identification of Functional Peptide Sequences to Lead the Design of Precision Polymers. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700632] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 09/26/2017] [Indexed: 12/16/2022]
Affiliation(s)
- Niels ten Brummelhuis
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Patrick Wilke
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
| | - Hans G. Börner
- Laboratory for Organic Synthesis of Functional Systems; Department of Chemistry; Humboldt-Universität zu Berlin; Brook-Taylor-Str. 2 D-12489 Berlin Germany
| |
Collapse
|
12
|
Pang Y, Li C, Wang S, Ba W, Yu T, Pei G, Bi D, Liang H, Pan X, Zhu T, Gou M, Han Y, Li Q. A novel protein derived from lamprey supraneural body tissue with efficient cytocidal actions against tumor cells. Cell Commun Signal 2017; 15:42. [PMID: 29037260 PMCID: PMC5644163 DOI: 10.1186/s12964-017-0198-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Accepted: 10/05/2017] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND In previous research, we found that cell secretion from the adult lamprey supraneural body tissues possesses cytocidal activity against tumor cells, but the protein with cytocidal activity was unidentified. METHODS A novel lamprey immune protein (LIP) as defense molecule was first purified and identified in jawless vertebrates (cyclostomes) using hydroxyapatite column and Q Sepharose Fast Flow column. After LIP stimulation, morphological changes of tumor cells were analysed and measured whether in vivo or in vitro. RESULTS LIP induces remarkable morphological changes in tumor cells, including cell blebbing, cytoskeletal alterations, mitochondrial fragmentation and endoplasmic reticulum vacuolation, and most of the cytoplasmic and organelle proteins are released following treatment with LIP. LIP evokes an elevation of intracellular calcium and inflammatory molecule levels. Our analysis of the cytotoxic mechanism suggests that LIP can upregulate the expression of caspase 1, RIPK1, RIP3 to trigger pyroptosis and necroptosis. To examine the effect of LIP in vivo, tumor xenograft experiments were performed, and the results indicated that LIP inhibits tumor growth without damage to mice. In addition, the cytotoxic action of LIP depended on the phosphatidylserine (PS) content of the cell membrane. CONCLUSIONS These observations suggest that LIP plays a crucial role in tumor cell survival and growth. The findings will also help to elucidate the mechanisms of host defense in lamprey.
Collapse
Affiliation(s)
- Yue Pang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Changzhi Li
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Shiyue Wang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Wei Ba
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Tao Yu
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Guangying Pei
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Dan Bi
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Hongfang Liang
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Xiong Pan
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Ting Zhu
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Meng Gou
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Yinglun Han
- College of Life Science, Liaoning Normal University, Dalian, 116081, China.,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China
| | - Qingwei Li
- College of Life Science, Liaoning Normal University, Dalian, 116081, China. .,Lamprey Research Center, Liaoning Normal University, Dalian, 116081, China.
| |
Collapse
|
13
|
Bastos P, Trindade F, da Costa J, Ferreira R, Vitorino R. Human Antimicrobial Peptides in Bodily Fluids: Current Knowledge and Therapeutic Perspectives in the Postantibiotic Era. Med Res Rev 2017; 38:101-146. [PMID: 28094448 PMCID: PMC7168463 DOI: 10.1002/med.21435] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 11/04/2016] [Accepted: 11/14/2016] [Indexed: 12/12/2022]
Abstract
Antimicrobial peptides (AMPs) are an integral part of the innate immune defense mechanism of many organisms. Due to the alarming increase of resistance to antimicrobial therapeutics, a growing interest in alternative antimicrobial agents has led to the exploitation of AMPs, both synthetic and isolated from natural sources. Thus, many peptide-based drugs have been the focus of increasing attention by many researchers not only in identifying novel AMPs, but in defining mechanisms of antimicrobial peptide activity as well. Herein, we review the available strategies for the identification of AMPs in human body fluids and their mechanism(s) of action. In addition, an overview of the distribution of AMPs across different human body fluids is provided, as well as its relation with microorganisms and infectious conditions.
Collapse
Affiliation(s)
- Paulo Bastos
- Department of Medical Sciences, iBiMED-Institute for Research in Biomedicine, University of Aveiro, Aveiro, Portugal
| | - Fábio Trindade
- Department of Medical Sciences, iBiMED-Institute for Research in Biomedicine, University of Aveiro, Aveiro, Portugal.,Unidade de Investigação Cardiovascular, Departamento de Cirurgia e Fisiologia, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - João da Costa
- Department of Chemistry, CESAM, University of Aveiro, Aveiro, Portugal
| | - Rita Ferreira
- Department of Chemistry, QOPNA, Mass Spectrometry Center, University of Aveiro, Aveiro, Portugal
| | - Rui Vitorino
- Department of Medical Sciences, iBiMED-Institute for Research in Biomedicine, University of Aveiro, Aveiro, Portugal.,Unidade de Investigação Cardiovascular, Departamento de Cirurgia e Fisiologia, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| |
Collapse
|
14
|
Comparative Analysis of the Antimicrobial Activities of Plant Defensin-Like and Ultrashort Peptides against Food-Spoiling Bacteria. Appl Environ Microbiol 2016; 82:4288-4298. [PMID: 27208129 DOI: 10.1128/aem.00558-16] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Accepted: 05/02/2016] [Indexed: 11/20/2022] Open
Abstract
UNLABELLED Antimicrobial peptides offer potential as novel therapeutics to combat food spoilage and poisoning caused by pathogenic and nonpathogenic bacteria. Our previous studies identified the peptide human beta-defensin 3 (HBD3) as a potent antimicrobial agent against a wide range of beer-spoiling bacteria. Thus, HBD3 is an excellent candidate for development as an additive to prevent food and beverage spoilage. To expand the repertoire of peptides with antimicrobial activity against bacteria associated with food spoilage and/or food poisoning, we carried out an in silico discovery pipeline to identify peptides with structure and activity similar to those of HBD3, focusing on peptides of plant origin. Using a standardized assay, we compared the antimicrobial activities of nine defensin-like plant peptides to the activity of HBD3. Only two of the peptides, fabatin-2 and Cp-thionin-2, displayed antimicrobial activity; however, the peptides differed from HBD3 in being sensitive to salt and were thermostable. We also compared the activities of several ultrashort peptides to that of HBD3. One of the peptides, the synthetic tetrapeptide O3TR, displayed biphasic antimicrobial activity but had a narrower host range than HBD3. Finally, to determine if the peptides might act in concert to improve antimicrobial activity, we compared the activities of the peptides in pairwise combinations. The plant defensin-like peptides fabatin-2 and Cp-thionin-2 displayed a synergistic effect with HBD3, while O3TR was antagonistic. Thus, some plant defensin-like peptides are effective antimicrobials and may act in concert with HBD3 to control bacteria associated with food spoilage and food poisoning. IMPORTANCE Food spoilage and food poisoning caused by bacteria can have major health and economic implications for human society. With the rise in resistance to conventional antibiotics, there is a need to identify new antimicrobials to combat these outbreaks in our food supply. Here we screened plant peptide databases to identify peptides that share structural similarity with the human defensin peptide HBD3, which has known antimicrobial activity against food-spoiling bacteria. We show that two of the plant peptides display antimicrobial activity against bacteria associated with food spoilage. When combined with HBD3, the peptides are highly effective. We also analyzed the activity of an easily made ultrashort synthetic peptide, O3TR. We show that this small peptide also displays antimicrobial activity against food-spoiling bacteria but is not as effective as HBD3 or the plant peptides. The plant peptides identified are good candidates for development as natural additives to prevent food spoilage.
Collapse
|
15
|
Chahardooli M, Niazi A, Aram F, Sohrabi SM. Expression of recombinant Arabian camel lactoferricin-related peptide in Pichia pastoris and its antimicrobial identification. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:569-575. [PMID: 25655077 DOI: 10.1002/jsfa.7125] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 02/02/2015] [Accepted: 02/02/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND Lactoferricin (LFcin) is a strong cationic peptide released from the N-terminus of lactoferrin by gastric pepsin digestion. LFcin has some important properties, including high antimicrobial activity. To date, lactoferricins have been isolated and characterised from various animal species, but not from camel. The aim of this study was to characterise and express recombinant camel lactoferricin (LFcinC) in Pichia pastoris and investigate its antimicrobial activity. RESULTS After methanol induction, LFcinC was expressed and secreted into a culture broth medium and the results determined by concentrated supernatant culture medium showed high antimicrobial activity against the following microorganisms: Escherichia coli PTCC 1330 (ATCC 8739), Staphylococcus aureus PTCC 1112 (ATCC 6538), Pseudomonas aeruginosa PTCC 1074 (ATCC 9027), Bacillus subtilis PTCC 1023 (ATCC 6633), and Candida albicans PTCC 5027 (ATCC 10231). Thermal stability was clarified with antibacterial activity against Escherichia coli PTCC 1330 (ATCC 8739). CONCLUSION Results confirmed that camel lactoferricin had suitable antimicrobial activity and its production by Pichia pastoris can be used for recombinant production.
Collapse
Affiliation(s)
| | - Ali Niazi
- Biotechnology Center, College of Agriculture, Shiraz University, Islamic Republic of Iran
| | - Farzaneh Aram
- Institute of Biotechnology, Shiraz University, Islamic Republic of Iran
| | | |
Collapse
|
16
|
Koller D, Lohner K. The role of spontaneous lipid curvature in the interaction of interfacially active peptides with membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2250-9. [PMID: 24853655 DOI: 10.1016/j.bbamem.2014.05.013] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 05/07/2014] [Accepted: 05/08/2014] [Indexed: 01/28/2023]
Abstract
Research on antimicrobial peptides is in part driven by urgent medical needs such as the steady increase in pathogens being resistant to antibiotics. Despite the wealth of information compelling structure-function relationships are still scarce and thus the interfacial activity model has been proposed to bridge this gap. This model also applies to other interfacially active (membrane active) peptides such as cytolytic, cell penetrating or antitumor peptides. One parameter that is strongly linked to interfacial activity is the spontaneous lipid curvature, which is experimentally directly accessible. We discuss different parameters such as H-bonding, electrostatic repulsion, changes in monolayer surface area and lateral pressure that affect induction of membrane curvature, but also vice versa how membrane curvature triggers peptide response. In addition, the impact of membrane lipid composition on the formation of curved membrane structures and its relevance for diverse mode of action of interfacially active peptides and in turn biological activity are described. This article is part of a Special Issue entitled: Interfacially Active Peptides and Proteins. Guest Editors: William C. Wimley and Kalina Hristova.
Collapse
Affiliation(s)
- Daniel Koller
- Institute of Molecular Biosciences, Biophysics Division, University of Graz, Schmiedlstraße 6, A-8042 Graz, Austria.
| | - Karl Lohner
- Institute of Molecular Biosciences, Biophysics Division, University of Graz, Schmiedlstraße 6, A-8042 Graz, Austria.
| |
Collapse
|
17
|
Parikesit AA, Kinanty, Tambunan USF. Screening of commercial cyclic peptides as inhibitor envelope protein dengue virus (DENV) through molecular docking and molecular dynamics. Pak J Biol Sci 2014; 16:1836-48. [PMID: 24516999 DOI: 10.3923/pjbs.2013.1836.1848] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Dengue virus (DENV) has spread throughout the world, especially in tropical climates. Effective treatment of DENV infection is not yet available although several candidate vaccines have been developed. Treatment at this time is only to reduce symptoms and reduce the risk of death. Therefore, antiviral treatment is much needed. Envelope protein is one of the structural proteins of DENV which is known and could be a target of antiviral inhibitors and plays a special role in the fusion process. The aim of this research is to screen the commercial cyclic peptides which are used as inhibitors of envelope protein DENV through molecular docking and molecular dynamics at 310 and 312 K. Screening of commercial cyclic peptides through molecular docking ligands obtained best 10 ligands then examined the interaction between hydrogen bonding and residue contacts of the cavity envelope protein and obtained best three ligands which could enter the cavity of envelope protein overall. The three ligands were predicted through the ADME-Tox and the best ligand obtained was BNP (7-32), porcine. The results of molecular dynamics simulations at 310 and 312 K revealed that ligand can maintain interaction with the cavity of the target.
Collapse
Affiliation(s)
- A A Parikesit
- Department of Chemistry, Faculty of Mathematics and Science, University of Indonesia, 16424, Depok, Indonesia
| | - Kinanty
- Department of Chemistry, Faculty of Mathematics and Science, University of Indonesia, 16424, Depok, Indonesia
| | - U S F Tambunan
- Department of Chemistry, Faculty of Mathematics and Science, University of Indonesia, 16424, Depok, Indonesia
| |
Collapse
|
18
|
Database-Guided Discovery of Potent Peptides to Combat HIV-1 or Superbugs. Pharmaceuticals (Basel) 2013; 6:728-58. [PMID: 24276259 PMCID: PMC3816732 DOI: 10.3390/ph6060728] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/02/2013] [Accepted: 05/13/2013] [Indexed: 11/17/2022] Open
Abstract
Antimicrobial peptides (AMPs), small host defense proteins, are indispensable for the protection of multicellular organisms such as plants and animals from infection. The number of AMPs discovered per year increased steadily since the 1980s. Over 2,000 natural AMPs from bacteria, protozoa, fungi, plants, and animals have been registered into the antimicrobial peptide database (APD). The majority of these AMPs (>86%) possess 11–50 amino acids with a net charge from 0 to +7 and hydrophobic percentages between 31–70%. This article summarizes peptide discovery on the basis of the APD. The major methods are the linguistic model, database screening, de novo design, and template-based design. Using these methods, we identified various potent peptides against human immunodeficiency virus type 1 (HIV-1) or methicillin-resistant Staphylococcus aureus (MRSA). While the stepwise designed anti-HIV peptide is disulfide-linked and rich in arginines, the ab initio designed anti-MRSA peptide is linear and rich in leucines. Thus, there are different requirements for antiviral and antibacterial peptides, which could kill pathogens via different molecular targets. The biased amino acid composition in the database-designed peptides, or natural peptides such as θ-defensins, requires the use of the improved two-dimensional NMR method for structural determination to avoid the publication of misleading structure and dynamics. In the case of human cathelicidin LL-37, structural determination requires 3D NMR techniques. The high-quality structure of LL-37 provides a solid basis for understanding its interactions with membranes of bacteria and other pathogens. In conclusion, the APD database is a comprehensive platform for storing, classifying, searching, predicting, and designing potent peptides against pathogenic bacteria, viruses, fungi, parasites, and cancer cells.
Collapse
|
19
|
Design of hybrid β-hairpin peptides with enhanced cell specificity and potent anti-inflammatory activity. Biomaterials 2012; 34:237-50. [PMID: 23046754 DOI: 10.1016/j.biomaterials.2012.09.032] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 09/16/2012] [Indexed: 11/20/2022]
Abstract
Antimicrobial peptides (AMPs) have attracted considerable attention for their broad-spectrum antimicrobial activity and reduced tendency to cause bacterial resistance. Emerging concerns over the host cytotoxicity of AMPs, however, may ultimately compromise their development as pharmaceuticals. In order to optimize AMPs with potent cell specificity and anti-inflammatory activity, we designed β-hairpin hybrid peptides based upon progetrin-1, bovine lactoferricin and cecropin A. The synthetic hybrid peptides LB-PG and CA-PG demonstrated high selectivity over a wide range of microbes from Gram-positive and Gram-negative bacteria in porcine red blood cells. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) show that these peptides kill microbial cells by penetrating the cell membrane and damaging the membrane envelope. Gel retardation demonstrates that the peptides have a high affinity for DNA, indicating an additional possible intracellular bactericidal mechanism. Moreover, the hybrid peptides inhibit the expression of LPS-induced proinflammatory cytokines and chemokines, such as tumor necrosis factor-α (TNF-α), inducible nitric oxide synthase (iNOS), macrophage inflammatory protein-1α (MIP-1α) and monocyte chemoattractant protein 1(MCP-1), following LPS stimulation in RAW264.7 cells. Our results indicate that these hybrid peptides have considerable potential for future development as antimicrobial and anti-inflammatory agents.
Collapse
|
20
|
Stach M, Maillard N, Kadam RU, Kalbermatter D, Meury M, Page MGP, Fotiadis D, Darbre T, Reymond JL. Membrane disrupting antimicrobial peptide dendrimers with multiple amino termini. MEDCHEMCOMM 2012. [DOI: 10.1039/c1md00272d] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
21
|
Jorge P, Lourenço A, Pereira MO. New trends in peptide-based anti-biofilm strategies: a review of recent achievements and bioinformatic approaches. BIOFOULING 2012; 28:1033-1061. [PMID: 23016989 DOI: 10.1080/08927014.2012.728210] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Antimicrobial peptides (AMPs) have a broad spectrum of activity and unspecific mechanisms of action. Therefore, they are seen as valid alternatives to overcome clinically relevant biofilms and reduce the chance of acquired resistance. This paper reviews AMPs and anti-biofilm AMP-based strategies and discusses ongoing and future work. Recent studies report successful AMP-based prophylactic and therapeutic strategies, several databases catalogue AMP information and analysis tools, and novel bioinformatics tools are supporting AMP discovery and design. However, most AMP studies are performed with planktonic cultures, and most studies on sessile cells test AMPs on growing rather than mature biofilms. Promising preliminary synergistic studies have to be consubstantiated and the study of functionalized coatings with AMPs must be further explored. Standardized operating protocols, to enforce the repeatability and reproducibility of AMP anti-biofilm tests, and automated means of screening and processing the ever-expanding literature are still missing.
Collapse
Affiliation(s)
- Paula Jorge
- IBB - Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | | | | |
Collapse
|
22
|
Li P, Li X, Saravanan R, Li CM, Leong SSJ. Antimicrobial macromolecules: synthesis methods and future applications. RSC Adv 2012. [DOI: 10.1039/c2ra01297a] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
23
|
Montesinos E, Badosa E, Cabrefiga J, Planas M, Feliu L, Bardají E. Antimicrobial Peptides for Plant Disease Control. From Discovery to Application. ACS SYMPOSIUM SERIES 2012. [DOI: 10.1021/bk-2012-1095.ch012] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Emilio Montesinos
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Jordi Cabrefiga
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Marta Planas
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Lidia Feliu
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| | - Eduard Bardají
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-XaRTA, University of Girona, 17071 Girona, Spain
- LIPPSO, Department of Chemistry; University of Girona, Campus Montilivi, 17071 Girona, Spain
| |
Collapse
|
24
|
Joshi S, Dewangan RP, Yadav S, Rawat DS, Pasha S. Synthesis, antibacterial activity and mode of action of novel linoleic acid–dipeptide–spermidine conjugates. Org Biomol Chem 2012; 10:8326-35. [DOI: 10.1039/c2ob26393a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
25
|
Silva ON, Mulder KCL, Barbosa AEAD, Otero-Gonzalez AJ, Lopez-Abarrategui C, Rezende TMB, Dias SC, Franco OL. Exploring the pharmacological potential of promiscuous host-defense peptides: from natural screenings to biotechnological applications. Front Microbiol 2011; 2:232. [PMID: 22125552 PMCID: PMC3222093 DOI: 10.3389/fmicb.2011.00232] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 11/01/2011] [Indexed: 02/02/2023] Open
Abstract
In the last few years, the number of bacteria with enhanced resistance to conventional antibiotics has dramatically increased. Most of such bacteria belong to regular microbial flora, becoming a real challenge, especially for immune-depressed patients. Since the treatment is sometimes extremely expensive, and in some circumstances completely inefficient for the most severe cases, researchers are still determined to discover novel compounds. Among them, host-defense peptides (HDPs) have been found as the first natural barrier against microorganisms in nearly all living groups. This molecular class has been gaining attention every day for multiple reasons. For decades, it was believed that these defense peptides had been involved only with the permeation of the lipid bilayer in pathogen membranes, their main target. Currently, it is known that these peptides can bind to numerous targets, as well as lipids including proteins and carbohydrates, from the surface to deep within the cell. Moreover, by using in vivo models, it was shown that HDPs could act both in pathogens and cognate hosts, improving immunological functions as well as acting through multiple pathways to control infections. This review focuses on structural and functional properties of HDP peptides and the additional strategies used to select them. Furthermore, strategies to avoid problems in large-scale manufacture by using molecular and biochemical techniques will also be explored. In summary, this review intends to construct a bridge between academic research and pharmaceutical industry, providing novel insights into the utilization of HDPs against resistant bacterial strains that cause infections in humans.
Collapse
Affiliation(s)
- Osmar N Silva
- Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Centro de Análises Protômicas e Bioquímicas, Universidade Católica de Brasília Brasília, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
26
|
Riedl S, Zweytick D, Lohner K. Membrane-active host defense peptides--challenges and perspectives for the development of novel anticancer drugs. Chem Phys Lipids 2011; 164:766-81. [PMID: 21945565 PMCID: PMC3220766 DOI: 10.1016/j.chemphyslip.2011.09.004] [Citation(s) in RCA: 294] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Revised: 09/07/2011] [Accepted: 09/08/2011] [Indexed: 12/22/2022]
Abstract
Although much progress has been achieved in the development of cancer therapies in recent decades, problems continue to arise particularly with respect to chemotherapy due to resistance to and low specificity of currently available drugs. Host defense peptides as effector molecules of innate immunity represent a novel strategy for the development of alternative anticancer drug molecules. These cationic amphipathic peptides are able to discriminate between neoplastic and non-neoplastic cells interacting specifically with negatively charged membrane components such as phosphatidylserine (PS), sialic acid or heparan sulfate, which differ between cancer and non-cancer cells. Furthermore, an increased number of microvilli has been found on cancer cells leading to an increase in cell surface area, which may in turn enhance their susceptibility to anticancer peptides. Thus, part of this review will be devoted to the differences in membrane composition of non-cancer and cancer cells with a focus on the exposure of PS on the outer membrane. Normally, surface exposed PS triggers apoptosis, which can however be circumvented by cancer cells by various means. Host defense peptides, which selectively target differences between cancer and non-cancer cell membranes, have excellent tumor tissue penetration and can thus reach the site of both primary tumor and distant metastasis. Since these molecules kill their target cells rapidly and mainly by perturbing the integrity of the plasma membrane, resistance is less likely to occur. Hence, a chapter will also describe studies related to the molecular mechanisms of membrane damage as well as alternative non-membrane related mechanisms. In vivo studies have demonstrated that host defense peptides display anticancer activity against a number of cancers such as e.g. leukemia, prostate, ascite and ovarian tumors, yet so far none of these peptides has made it on the market. Nevertheless, optimization of host defense peptides using various strategies to enhance further selectivity and serum stability is expected to yield novel anticancer drugs with improved properties in respect of cancer cell toxicity as well as reduced development of drug resistance.
Collapse
Affiliation(s)
- Sabrina Riedl
- Institute of Biophysics and Nanosystems Research, Austrian Academy of Sciences, Schmiedlstrasse 6, Graz, Austria
| | | | | |
Collapse
|
27
|
In search of a novel target - phosphatidylserine exposed by non-apoptotic tumor cells and metastases of malignancies with poor treatment efficacy. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1808:2638-45. [PMID: 21810406 PMCID: PMC3175029 DOI: 10.1016/j.bbamem.2011.07.026] [Citation(s) in RCA: 231] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 07/19/2011] [Accepted: 07/19/2011] [Indexed: 02/07/2023]
Abstract
This study was performed in the aim to identify potential targets for the development of novel therapy to treat cancer with poor outcome or treatment efficacy. We show that the negatively charged phospholipid phosphatidylserine (PS) is exposed in the outer leaflet of their plasma membrane not only in tumor cell lines, but also in metastases and primary cultures thereof, which contrasts with a lack of PS exposure by differentiated non-tumorigenic counterparts. Studied tumor cell lines were derived from non-tumorigenic and malignant melanomas, prostate- and renal cancer, glioblastoma and a rhabdomyosarcoma. Importantly, also metastases of melanoma expose PS and there is a correlation between malignancy of melanoma cell lines from different stages of tumor progression and PS exposure. The PS exposure we found was neither of apoptotic nor of experimental artificial origin. Finally potentially malignant and non-malignant cells could be differentiated by sorting of a primary cell culture derived from a glioblastoma based on PS exposure, which has so far not been possible within one culture due to lack of a specific marker. Our data provide clear evidence that PS could serve as uniform marker of tumor cells and metastases as well as a target for novel therapeutic approaches based on e.g. PS-specific host defense derived peptides.
Collapse
|
28
|
Weghuber J, Aichinger MC, Brameshuber M, Wieser S, Ruprecht V, Plochberger B, Madl J, Horner A, Reipert S, Lohner K, Henics T, Schütz GJ. Cationic amphipathic peptides accumulate sialylated proteins and lipids in the plasma membrane of eukaryotic host cells. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2011; 1808:2581-90. [PMID: 21718688 PMCID: PMC3161180 DOI: 10.1016/j.bbamem.2011.06.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Revised: 06/08/2011] [Accepted: 06/13/2011] [Indexed: 11/25/2022]
Abstract
Cationic antimicrobial peptides (CAMPs) selectively target bacterial membranes by electrostatic interactions with negatively charged lipids. It turned out that for inhibition of microbial growth a high CAMP membrane concentration is required, which can be realized by the incorporation of hydrophobic groups within the peptide. Increasing hydrophobicity, however, reduces the CAMP selectivity for bacterial over eukaryotic host membranes, thereby causing the risk of detrimental side-effects. In this study we addressed how cationic amphipathic peptides—in particular a CAMP with Lysine–Leucine–Lysine repeats (termed KLK)—affect the localization and dynamics of molecules in eukaryotic membranes. We found KLK to selectively inhibit the endocytosis of a subgroup of membrane proteins and lipids by electrostatically interacting with negatively charged sialic acid moieties. Ultrastructural characterization revealed the formation of membrane invaginations representing fission or fusion intermediates, in which the sialylated proteins and lipids were immobilized. Experiments on structurally different cationic amphipathic peptides (KLK, 6-MO-LF11-322 and NK14-2) indicated a cooperation of electrostatic and hydrophobic forces that selectively arrest sialylated membrane constituents.
Collapse
Affiliation(s)
- Julian Weghuber
- Biophysics Institute, Johannes Kepler University Linz, Altenbergerstr 69, A-4040 Linz, Austria.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Nguyen LT, Haney EF, Vogel HJ. The expanding scope of antimicrobial peptide structures and their modes of action. Trends Biotechnol 2011; 29:464-72. [PMID: 21680034 DOI: 10.1016/j.tibtech.2011.05.001] [Citation(s) in RCA: 1046] [Impact Index Per Article: 80.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 04/27/2011] [Accepted: 05/04/2011] [Indexed: 11/17/2022]
Abstract
Antimicrobial peptides (AMPs) are an integral part of the innate immune system that protect a host from invading pathogenic bacteria. To help overcome the problem of antimicrobial resistance, cationic AMPs are currently being considered as potential alternatives for antibiotics. Although extremely variable in length, amino acid composition and secondary structure, all peptides can adopt a distinct membrane-bound amphipathic conformation. Recent studies demonstrate that they achieve their antimicrobial activity by disrupting various key cellular processes. Some peptides can even use multiple mechanisms. Moreover, several intact proteins or protein fragments are now being shown to have inherent antimicrobial activity. A better understanding of the structure-activity relationships of AMPs is required to facilitate the rational design of novel antimicrobial agents.
Collapse
Affiliation(s)
- Leonard T Nguyen
- Biochemistry Research Group, Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada, T2N 1N4
| | | | | |
Collapse
|
30
|
Fluxà VS, Maillard N, Page MGP, Reymond JL. Bead diffusion assay for discovering antimicrobial cyclic peptides. Chem Commun (Camb) 2011; 47:1434-6. [DOI: 10.1039/c0cc04670a] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|