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Shungube M, Hlophe AK, Girdhari L, Sabe VT, Peters BB, Reddy N, Omolabi KF, Chetty L, Arumugam T, Chuturgoon A, Kruger HG, Arvidsson PI, Qin HL, Naicker T, Govender T. Synthesis and biological evaluation of novel β-lactam-metallo β-lactamase inhibitors. RSC Adv 2023; 13:18991-19001. [PMID: 37362332 PMCID: PMC10285615 DOI: 10.1039/d3ra02490c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 06/09/2023] [Indexed: 06/28/2023] Open
Abstract
β-lactamases are enzymes that deactivate β-lactam antibiotics through a hydrolysis mechanism. There are two known types of β-lactamases: serine β-lactamases (SBLs) and metallo β-lactamases (MBLs). The two existing strategies to overcome β-lactamase-mediated resistance are (a) to develop novel β-lactam antibiotics that are not susceptible to hydrolysis by these enzymes; or (b) to develop β-lactamase inhibitors that deactivate the enzyme and thereby restore the efficacy of the co-administered antibiotics. Many commercially available SBL inhibitors are used in combination therapy with antibiotics to treat antimicrobial resistant infections; however, there are only a handful of MBL inhibitors undergoing clinical trials. In this study, we present 11 novel potential MBL inhibitors (via multi-step chemical synthesis), that have shown to completely restore the efficacy of meropenem (≤2 mg L-1) against New Delhi metallo-β-lactamase (NDM) producing Klebsiella pneumoniae in vitro. These compounds contain a cyclic amino acid zinc chelator conjugated to various commercially available β-lactam antibiotic scaffolds with the aim to improve the overall drug transport, lipophilicity, and pharmacokinetic/pharmacodynamic properties as compared to the chelator alone. Biological evaluation of compounds 24b and 24c has further highlighted the downstream application of these MBLs, since they are non-toxic at the selected doses. Time-kill assays indicate that compounds 24b and 24c exhibit sterilizing activity towards NDM producing Klebsiella pneumoniae in vitro using minimal concentrations of meropenem. Furthermore, 24b and 24c proved to be promising inhibitors of VIM-2 (Ki = 0.85 and 1.87, respectively). This study has revealed a novel series of β-lactam MBLIs that are potent, efficacious, and safe leads with the potential to develop into therapeutic MBLIs.
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Affiliation(s)
- Mbongeni Shungube
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Ayanda K Hlophe
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Letisha Girdhari
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Victor T Sabe
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Byron B Peters
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Nakita Reddy
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Kehinde F Omolabi
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Lloyd Chetty
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Thilona Arumugam
- School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal Durban South Africa
| | - Anil Chuturgoon
- School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal Durban South Africa
| | - Hendrik G Kruger
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Per I Arvidsson
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
- Science for Life Laboratory, Drug Discovery & Development Platform & Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet Stockholm Sweden
| | - Hua-Li Qin
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology 205 Luoshi Road Wuhan 430070 P. R. China
| | - Tricia Naicker
- Catalysis and Peptide Research Unit, University of KwaZulu Natal Durban 4001 South Africa +27 312601845
| | - Thavendran Govender
- Department of Chemistry, University of Zululand Private Bag X1001 KwaDlangezwa 3886 South Africa
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Puneeth Kumar DRGKR, Reja RM, Senapati DK, Singh M, Nalawade SA, George G, Kaul G, Akhir A, Chopra S, Raghothama S, Gopi HN. A cationic amphiphilic peptide chaperone rescues Aβ 42 aggregation and cytotoxicity. RSC Med Chem 2023; 14:332-340. [PMID: 36846376 PMCID: PMC9945854 DOI: 10.1039/d2md00414c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/04/2022] [Indexed: 12/14/2022] Open
Abstract
Directing Aβ42 to adopt a conformation that is free from aggregation and cell toxicity is an attractive and viable strategy to design therapeutics for Alzheimer's disease. Over the years, extensive efforts have been made to disrupt the aggregation of Aβ42 using various types of inhibitors but with limited success. Herein, we report the inhibition of aggregation of Aβ42 and disintegration of matured fibrils of Aβ42 into smaller assemblies by a 15-mer cationic amphiphilic peptide. The biophysical analysis comprising thioflavin T (ThT) mediated amyloid aggregation kinetic analysis, dynamic light scattering, ELISA, AFM, and TEM suggested that the peptide effectively disrupts Aβ42 aggregation. The circular dichroism (CD) and 2D-NMR HSQC analysis reveal that upon interaction, the peptide induces a conformational change in Aβ42 that is free from aggregation. Further, the cell assay experiments revealed that this peptide is non-toxic to cells and also rescues the cells from the toxicity of Aβ42. Peptides with a shorter length displayed either weak or no inhibitory effect on Aβ42 aggregation and cytotoxicity. These results suggest that the 15-residue cationic amphiphilic peptide reported here may serve as a potential therapeutic candidate for Alzheimer's disease.
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Affiliation(s)
- DRGKoppalu R. Puneeth Kumar
- Department of Chemistry, Indian Institute of Science Education and ResearchDr. Homi Bhabha Road, PashanPune-411008India
| | - Rahi M. Reja
- Department of Chemistry, Indian Institute of Science Education and ResearchDr. Homi Bhabha Road, PashanPune-411008India
| | | | - Manjeet Singh
- Department of Chemistry, Indian Institute of Science Education and Research Dr. Homi Bhabha Road, Pashan Pune-411008 India
| | - Sachin A. Nalawade
- Department of Chemistry, Indian Institute of Science Education and ResearchDr. Homi Bhabha Road, PashanPune-411008India
| | - Gijo George
- NMR Research Centre, Indian Institute of ScienceBangalore-560012India
| | - Grace Kaul
- Division of Microbiology and Division of Medicinal and Process Chemistry, CSIR-Central Drug Research InstituteSitapur Road, Sector 10, Janakipuram ExtensionLucknow-226031Uttar PradeshIndia,AcSIR: Academy of Scientific and Innovative Research (AcSIR)Ghaziabad 201002India
| | - Abdul Akhir
- Division of Microbiology and Division of Medicinal and Process Chemistry, CSIR-Central Drug Research InstituteSitapur Road, Sector 10, Janakipuram ExtensionLucknow-226031Uttar PradeshIndia
| | - Sidharth Chopra
- Division of Microbiology and Division of Medicinal and Process Chemistry, CSIR-Central Drug Research InstituteSitapur Road, Sector 10, Janakipuram ExtensionLucknow-226031Uttar PradeshIndia,AcSIR: Academy of Scientific and Innovative Research (AcSIR)Ghaziabad 201002India
| | | | - Hosahudya N. Gopi
- Department of Chemistry, Indian Institute of Science Education and ResearchDr. Homi Bhabha Road, PashanPune-411008India
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Nemr MT, Teleb MI, AboulMagd AM, El-Naggar ME, Gouda N, Abdel-Ghany A, Elshaier YA. Design, synthesis and chemoinformatic studies of new thiazolopyrimidine derivatives as potent anticancer agents via phosphodiesterase-5 inhibition and apoptotic inducing activity. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Breaker peptides against amyloid-β aggregation: a potential therapeutic strategy for Alzheimer's disease. Future Med Chem 2021; 13:1767-1794. [PMID: 34498978 DOI: 10.4155/fmc-2021-0184] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disorder, for which blocking the early steps of extracellular misfolded amyloid-β (Aβ) aggregation is a promising therapeutic approach. However, the pathological features of AD progression include the accumulation of intracellular tau protein, membrane-catalyzed cell death and the abnormal deposition of Aβ. Here, we focus on anti-amyloid breaker peptides derived from the Aβ sequence and non-Aβ-based peptides containing both natural and modified amino acids. Critical aspects of the breaker peptides include N-methylation, conformational restriction through cyclization, incorporation of unnatural amino acid, fluorinated molecules, polymeric nanoparticles and PEGylation. This review confers a general idea of such breaker peptides with in vitro and in vivo studies, which may advance our understanding of AD pathology and develop an effective treatment strategy against AD.
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Wang T, Xu K, Zhao L, Tong R, Xiong L, Shi J. Recent research and development of NDM-1 inhibitors. Eur J Med Chem 2021; 223:113667. [PMID: 34225181 DOI: 10.1016/j.ejmech.2021.113667] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/26/2021] [Accepted: 06/13/2021] [Indexed: 10/21/2022]
Abstract
Bacteria carrying New Delhi metallo-β-lactamase-1 (New Delhi metallo-β-lactamase, NDM-1) resistance gene is a new type of "superbug", which can hydrolyze almost all β-lactam antibiotics, rapidly spread among the same species and even spread among different species. NDM-1 belongs to the class B1 broad-spectrum enzyme of β-lactamase. The two positively charged zinc ions in the active center have electrostatic interaction with the hydroxyl ions in them to seize the hydrogen atom near the water molecule to form a bridging ring water molecule, which strengthens its nucleophilicity and attacks the carbonyl group on the lactam ring; thus, catalyzing the hydrolysis of β-lactam antibiotics. Since NDM-1 has an open active site and unique electrostatic structure, it essentially provides a wider range of substrate specificity. Due to its flexible hydrolysis mechanism and more and more variants also aggravate the threat of drug-resistant bacteria infection, there is still no effective inhibitor in clinic, which is a serious threat to human health and public health safety. The electron-rich substituents of NDM-1 inhibitors coordinate with two positively charged zinc ions in the active center of the enzyme through ion-dipole interaction to produce NDM-1 inhibitory activity. In this review, the research progress of NDM-1 enzyme and its inhibitors in the past 5 years was reviewed. The crystal structure, active center structure, surrounding important amino acid residues, newly discovered inhibitors and their action mechanism are classified and summarized in detail, which can be used as a reference for the development of effective drugs against drug-resistant bacteria targeting NDM-1.
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Affiliation(s)
- Ting Wang
- Personalized Drug Therapy Key Laboratory of Sichuan Province, Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Kaiju Xu
- Department of Infectious Diseases, Sichuan Academy of Medical Sciences and Sichuan Provincial People's Hospital, Chengdu, 610072, China
| | - Liyun Zhao
- Personalized Drug Therapy Key Laboratory of Sichuan Province, Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China
| | - Rongsheng Tong
- Personalized Drug Therapy Key Laboratory of Sichuan Province, Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
| | - Liang Xiong
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China; State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Jianyou Shi
- Personalized Drug Therapy Key Laboratory of Sichuan Province, Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, 610072, China.
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Ugbaja SC, Sanusi ZK, Appiah-Kubi P, Lawal MM, Kumalo HM. Computational modelling of potent β-secretase (BACE1) inhibitors towards Alzheimer's disease treatment. Biophys Chem 2020; 270:106536. [PMID: 33387910 DOI: 10.1016/j.bpc.2020.106536] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 12/28/2022]
Abstract
Researchers have identified the β-amyloid precursor protein cleaving enzyme 1 (BACE1) in the multifactorial pathway of Alzheimer's disease (AD) as a drug target. The design and development of molecules to inhibit BACE1 as a potential cure for AD thus remained significant. Herein, we simulated two potent BACE1 inhibitors (AM-6494 and CNP-520) to understand their binding affinity at the atomistic level. AM-6494 is a newly reported potent BACE1 inhibitor with an IC50 value of 0.4 nM in vivo and now picked for preclinical considerations. Umibecestat (CNP-520), which was discontinued at human trials lately, was considered to enable a reasonable evaluation of our results. Using density functional theory (DFT) and Our Own N-layered Integrated molecular Orbital and Molecular Mechanics (ONIOM), we achieved the aim of this investigation. These computational approaches enabled the prediction of the electronic properties of AM-6494 and CNP-520 plus their binding energies when complexed with BACE1. For AM-6494 and CNP-520 interaction with protonated BACE1, the ONIOM calculation gave binding free energy of -62.849 and -33.463 kcal/mol, respectively. In the unprotonated model, we observed binding free energy of -59.758 kcal/mol in AM-6494. Taken together thermochemistry of the process and molecular interaction plot, AM-6494 is more favourable than CNP-520 towards the inhibition of BACE1. The protonated model gave slightly better binding energy than the unprotonated form. However, both models could sufficiently describe ligand binding to BACE1 at the atomistic level. Understanding the detailed molecular interaction of these inhibitors could serve as a basis for pharmacophore exploration towards improved inhibitor design.
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Affiliation(s)
- Samuel C Ugbaja
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Zainab K Sanusi
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban 4001, South Africa
| | - Patrick Appiah-Kubi
- Molecular Bio-computational and Drug Design Research Group, School of Health Sciences, University of KwaZulu-Natal, Westville Campus, Durban 4001, South Africa
| | - Monsurat M Lawal
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban 4001, South Africa.
| | - Hezekiel M Kumalo
- Discipline of Medical Biochemistry, School of Laboratory Medicine and Medical Science, University of KwaZulu-Natal, Durban 4001, South Africa.
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7
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Mitra A, Sarkar N. Sequence and structure-based peptides as potent amyloid inhibitors: A review. Arch Biochem Biophys 2020; 695:108614. [PMID: 33010227 DOI: 10.1016/j.abb.2020.108614] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/27/2020] [Accepted: 09/28/2020] [Indexed: 02/07/2023]
Abstract
Misfolded and natively disordered globular proteins tend to aggregate together in an interwoven fashion to form fibrous, proteinaceous deposits referred to as amyloid fibrils. Formation and deposition of such insoluble fibrils are the characteristic features of a broad group of diseases, known as amyloidosis. Some of these proteins are known to cause several degenerative disorders in humans, such as Amyloid-Beta (Aβ) in Alzheimer's disease (AD), human Islet Amyloid Polypeptide (hIAPP, amylin) in type 2 diabetes, α-synuclein (α-syn) in Parkinson's disease (PD) and so on. The fact that these proteins do not share any significant sequence or structural homology in their native states make therapy quite challenging. However, it is observed that aggregation-prone proteins and peptides tend to adopt a similar type of secondary structure during the formation of fibrils. Rationally designed peptides can be a potent inhibitor that has been shown to disrupt the fibril structure by binding specifically to the amyloidogenic region(s) within a protein. The following review will analyze the inhibitory potency of both sequence-based and structure-based small peptides that have been shown to inhibit amyloidogenesis of proteins such as Aβ, human amylin, and α-synuclein.
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Affiliation(s)
- Amit Mitra
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, 769008, Odisha, India
| | - Nandini Sarkar
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, 769008, Odisha, India.
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Marzouk AA, Bass AKA, Ahmed MS, Abdelhamid AA, Elshaier YAMM, Salman AMM, Aly OM. Design, synthesis and anticonvulsant activity of new imidazolidindione and imidazole derivatives. Bioorg Chem 2020; 101:104020. [PMID: 32599366 DOI: 10.1016/j.bioorg.2020.104020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 06/06/2020] [Accepted: 06/12/2020] [Indexed: 01/05/2023]
Abstract
New imidazolidindiones and tetra-substituted imidazole derivatives were designed, synthesized, and evaluated for the anticonvulsant activity through pentylenetetrazole (PTZ)-induced seizures and maximal electroshock (MES) tests using valproate sodium and phenytoin sodium as reference drugs, respectively. Most of the target compounds showed excellent activity against pentylenetetrazole (PTZ)-induced seizures with fair to no-activity against MES. Compounds 3d, 4e, 11b, and 11e showed higher activity (120%) than that of valproate sodium in PTZ model. Almost all compounds showed no neurotoxicity, as indicated by the rotarod test. Estimation of physicochemical properties and pharmacokinetic profiles of the target compounds were studied. The chemical structures of the target compounds were characterized by different spectrometric methods and elemental analysis.
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Affiliation(s)
- Adel A Marzouk
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Egypt.
| | - Amr K A Bass
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Menoufia University, Egypt
| | - Montaser Sh Ahmed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Egypt
| | - Antar A Abdelhamid
- Department of Chemistry, Faculty of Science, Sohag University, Egypt; Chemistry Department, Faculty of Science, Albaha University, P.O. Box 1988, Albaha, Saudi Arabia
| | - Yaseen A M M Elshaier
- Department of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Asmaa M M Salman
- Medicinal and Pharmaceutical Chemistry Department, National Research Centre, Dokki, Cairo, Egypt
| | - Omar M Aly
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Egypt
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Green RM, Bicker KL. Evaluation of peptoid mimics of short, lipophilic peptide antimicrobials. Int J Antimicrob Agents 2020; 56:106048. [PMID: 32540430 DOI: 10.1016/j.ijantimicag.2020.106048] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 05/04/2020] [Accepted: 06/06/2020] [Indexed: 12/31/2022]
Abstract
INTRODUCTION Antimicrobial peptides are proving to be promising lead compounds for therapeutics. The major disadvantage of antimicrobial peptides is their proteolytic instability in the body, with half-lives averaging less than an hour. Peptoids, or N-substituted glycines, have emerged as a promising field of peptidomimetics by retaining the beneficial properties of antimicrobial peptides while improving their stability. METHODS This study evaluated peptoid derivatives of ultra-short lipophilic antimicrobial peptides, comparing their potency side-by-side with the most prevalent multidrug-resistant bacteria (ESKAPE) and yeast pathogens (Candida albicans and Cryptococcus neoformans). RESULTS Both peptide and peptoid counterparts were most effective against Gram-positive bacteria with minimum inhibitory concentration (MIC) values as low as 1.6 and 6.3 µg/mL, respectively. In general, peptides retained better antimicrobial activity than their peptoid counterparts; however, certain peptoids proved to be more effective than peptides against Gram-negative bacteria. For example, peptoid MG10 displayed an MIC of 6.3 µg/mL against Pseudomonas aeruginosa compared with the peptide counterpart with an MIC of 100 µg/mL. All tested compounds were more potent against Cryptococcus neoformans compared with Candida albicans. Cytotoxicity analysis indicated that peptoids were generally slightly less toxic than their peptide counterparts. Additionally, trypsin rapidly degraded one of the evaluated peptides, while having no effect on comparable peptoids, demonstrating the proteolytic stability of peptoids. CONCLUSION These results indicate that direct conversion of lipopeptides to lipopeptoids can result in compounds with comparable antimicrobial activity, favorable mammalian cell toxicity, and excellent proteolytic stability.
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Affiliation(s)
- R Madison Green
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, TN, USA
| | - Kevin L Bicker
- Department of Chemistry, Middle Tennessee State University, Murfreesboro, TN, USA.
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Muhl C, Zengerling L, Groß J, Eckhardt P, Opatz T, Besenius P, Barz M. Insight into the synthesis of N-methylated polypeptides. Polym Chem 2020. [DOI: 10.1039/d0py01055c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The ring-opening polymerization of α-substituted N-methylated N-carboxy anhydrides is reported. The polymerization was tested using various amino acids and initiators, and was found to be limited by the steric demand of N-methylated compared to conventional amino acids.
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Affiliation(s)
- Christian Muhl
- Department of Chemistry
- Johannes Gutenberg University Mainz
- 55099 Mainz
- Germany
| | - Lydia Zengerling
- Department of Chemistry
- Johannes Gutenberg University Mainz
- 55099 Mainz
- Germany
| | - Jonathan Groß
- Department of Chemistry
- Johannes Gutenberg University Mainz
- 55099 Mainz
- Germany
| | - Paul Eckhardt
- Department of Chemistry
- Johannes Gutenberg University Mainz
- 55099 Mainz
- Germany
| | - Till Opatz
- Department of Chemistry
- Johannes Gutenberg University Mainz
- 55099 Mainz
- Germany
| | - Pol Besenius
- Department of Chemistry
- Johannes Gutenberg University Mainz
- 55099 Mainz
- Germany
| | - Matthias Barz
- Department of Chemistry
- Johannes Gutenberg University Mainz
- 55099 Mainz
- Germany
- Leiden Academic Center for Drug Research (LACDR)
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Dilem Doğan Ş, Buran S, Gözde Gündüz M, Özkul C, Siva Krishna V, Sriram D. Synthesis of Disulfide-Bridged N-Phenyl-N'-(alkyl/aryl/heteroaryl)urea Derivatives and Evaluation of Their Antimicrobial Activities. Chem Biodivers 2019; 16:e1900461. [PMID: 31557406 DOI: 10.1002/cbdv.201900461] [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: 08/21/2019] [Accepted: 09/26/2019] [Indexed: 11/06/2022]
Abstract
The discovery of new antimicrobial agents is extremely needed to overcome multidrug-resistant bacterial and tuberculosis infections. In the present study, eight novel substituted urea derivatives (10a-10h) containing disulfide bond were designed, synthesized and screened for their in vitro antimicrobial activities on standard strains of Gram-positive and Gram-negative bacteria as well as on Mycobacterium tuberculosis. According to the obtained results, antibacterial effects of the compounds were found to be considerably better than their antimycobacterial activities along with their weak cytotoxic effects. Molecular docking studies were performed to gain insights into the antibacterial activity mechanism of the synthesized compounds. The interactions and the orientation of compound 10a (1,1'-((disulfanediylbis(methylene))bis(2,1-phenylene))bis(3-phenylurea)) were found to be highly similar to the original ligand within the binding pocket E. faecalis β-ketoacyl acyl carrier protein synthase III (FabH). Finally, a theoretical study was established to predict the physicochemical properties of the compounds.
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Affiliation(s)
- Şengül Dilem Doğan
- Department of Basic Sciences, Faculty of Pharmacy, Erciyes University, 38039, Kayseri, Turkey
| | - Sümeyye Buran
- Department of Basic Sciences, Faculty of Pharmacy, Erciyes University, 38039, Kayseri, Turkey
| | - Miyase Gözde Gündüz
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Sıhhiye, 06100, Ankara, Turkey
| | - Ceren Özkul
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, Hacettepe University, Sıhhiye, 06100, Ankara, Turkey
| | - Vagolu Siva Krishna
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, 500078, Hyderabad, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, 500078, Hyderabad, India
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Caroleo MC, Brizzi A, De Rosa M, Pandey A, Gallelli L, Badolato M, Carullo G, Cione E. Targeting Neuropathic Pain: Pathobiology, Current Treatment and Peptidomimetics as a New Therapeutic Opportunity. Curr Med Chem 2019; 27:1469-1500. [PMID: 31142248 DOI: 10.2174/0929867326666190530121133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 01/25/2019] [Accepted: 02/15/2019] [Indexed: 12/18/2022]
Abstract
There is a huge need for pharmaceutical agents for the treatment of chronic Neuropathic Pain (NP), a complex condition where patients can suffer from either hyperalgesia or allodynia originating from central or peripheral nerve injuries. To date, the therapeutic guidelines include the use of tricyclic antidepressants, serotonin-noradrenaline reuptake inhibitors and anticonvulsants, beside the use of natural compounds and non-pharmacological options. Unfortunately, these drugs suffer from limited efficacy and serious dose-dependent adverse effects. In the last decades, the heptapeptide SP1-7, the major bioactive metabolite produced by Substance P (SP) cleavage, has been extensively investigated as a potential target for the development of novel peptidomimetic molecules to treat NP. Although the physiological effects of this SP fragment have been studied in detail, the mechanism behind its action is not fully clarified and the target for SP1-7 has not been identified yet. Nevertheless, specific binding sites for the heptapeptide have been found in brain and spinal cord of both mouse and rats. Several Structure-Affinity Relationship (SAR) studies on SP1-7 and some of its synthetic analogues have been carried out aiming to developing more metabolically stable and effective small molecule SP1-7-related amides that could be used as research tools for a better understanding of the SP1-7 system and, in a longer perspective, as potential therapeutic agents for future treatment of NP.
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Affiliation(s)
- Maria Cristina Caroleo
- Department of Pharmacy and Health and Nutrition Sciences, University of Calabria, Edificio Polifunzionale, 87026 Rende (CS), Italy
| | - Antonella Brizzi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Polo Scientifico San Miniato, Via A. Moro 2, 53100 Siena, Italy
| | - Maria De Rosa
- Drug Discovery Unit, Ri.MED Foundation, Palermo 90133, Italy
| | - Ankur Pandey
- Department of Chemistry and Center of Advanced Studies in Chemistry, Punjab University, Chandigarh, India
| | - Luca Gallelli
- Department of Health Science, School of Medicine, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - Mariateresa Badolato
- Department of Pharmacy and Health and Nutrition Sciences, University of Calabria, Edificio Polifunzionale, 87026 Rende (CS), Italy
| | - Gabriele Carullo
- Department of Pharmacy and Health and Nutrition Sciences, University of Calabria, Edificio Polifunzionale, 87026 Rende (CS), Italy
| | - Erika Cione
- Department of Pharmacy and Health and Nutrition Sciences, University of Calabria, Edificio Polifunzionale, 87026 Rende (CS), Italy
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13
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Teleb M, Rizk OH, Zhang FX, Fronczek FR, Zamponi GW, Fahmy H. Design, synthesis and pharmacological evaluation of some substituted dihydropyrimidines with L-/T-type calcium channel blocking activities. Bioorg Chem 2019; 83:354-366. [DOI: 10.1016/j.bioorg.2018.10.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 10/19/2018] [Accepted: 10/26/2018] [Indexed: 12/24/2022]
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14
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Ragab HM, Teleb M, Haidar HR, Gouda N. Chlorinated tacrine analogs: Design, synthesis and biological evaluation of their anti-cholinesterase activity as potential treatment for Alzheimer's disease. Bioorg Chem 2019; 86:557-568. [PMID: 30782574 DOI: 10.1016/j.bioorg.2019.02.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 02/13/2019] [Accepted: 02/13/2019] [Indexed: 12/13/2022]
Abstract
In search of potent acetyl cholinesterase inhibitors with low hepatotoxicity for the treatment of Alzheimer's disease, introduction of a chloro substitution to tacrine and some of its analogs has proven to be beneficial in maintaining or potentiating the cholinesterase inhibitory activity. Furthermore, it was found to be able to reduce the hepatotoxicity of the synthesized compounds, which is the main target of the study. Accordingly, a series of new 4-(chlorophenyl)tetrahydroquinoline derivatives, was synthesized and characterized. The synthesized compounds were evaluated for their in vitro and in vivo anti-cholinesterase activity using tacrine as a reference standard. Furthermore, they were investigated for their hepatotoxicity compared to tacrine. The obtained biological results revealed that all synthesized compounds displayed equivalent or significantly higher anti-cholinesterase activity and lower hepatotoxicity in comparison to tacrine. In addition, in silico drug-likeness of the synthesized compounds were predicted and their practical logP were assessed indicating that all synthesized compounds can be considered as promising hits/leads. Furthermore, docking study of the compound showing the highest in vitro anticholinesterase activity was performed and its binding mode was compared to that of tacrine.
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Affiliation(s)
- Hanan M Ragab
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt.
| | - Mohamed Teleb
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Hassan R Haidar
- Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon
| | - Noha Gouda
- Noha Gouda, Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
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15
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Chopra G, Chopra N, Kaur D. Elucidating the intermolecular hydrogen bonding interaction of proline with amides—quantum chemical calculations. Struct Chem 2018. [DOI: 10.1007/s11224-018-1235-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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17
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Fine-tuning the physicochemical properties of peptide-based blood-brain barrier shuttles. Bioorg Med Chem 2018; 26:2099-2106. [PMID: 29567297 DOI: 10.1016/j.bmc.2018.03.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/26/2018] [Accepted: 03/07/2018] [Indexed: 01/12/2023]
Abstract
N-methylation is a powerful method to modify the physicochemical properties of peptides. We previously found that a fully N-methylated tetrapeptide, Ac-(N-MePhe)4-CONH2, was more lipophilic than its non-methylated analog Ac-(Phe)4-CONH2. In addition, the former crossed artificial and cell membranes while the latter did not. Here we sought to optimize the physicochemical properties of peptides and address how the number and position of N-methylated amino acids affect these properties. To this end, 15 analogs of Ac-(Phe)4-CONH2 were designed and synthesized in solid-phase. The solubility of the peptides in water and their lipophilicity, as measured by ultra performance liquid chromatography (UPLC) retention times, were determined. To study the permeability of the peptides, the Parallel Artificial Membrane Permeability Assay (PAMPA) was used as an in vitro model of the blood-brain barrier (BBB). Contrary to the parent peptide, the 15 analogs crossed the artificial membrane, thereby showing that N-methylation improved permeability. We also found that N-methylation enhanced lipophilicity but decreased the water solubility of peptides. Our results showed that both the number and position of N-methylated residues are important factors governing the physicochemical properties of peptides. There was no correlation between the number of N-methylated amide bonds and any of the properties measured. However, for the peptides consecutively N-methylated from the N-terminus to the C-terminus (p1, p5, p11, p12 and p16), lipophilicity correlated well with the number of N-methylated amide bonds and the permeability of the peptides. Moreover, the peptides were non-toxic to HEK293T cells, as determined by the 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) assay.
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18
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Skogh A, Lesniak A, Gaugaz FZ, Svensson R, Lindeberg G, Fransson R, Nyberg F, Hallberg M, Sandström A. Impact of N-methylation of the substance P 1–7 amide on anti-allodynic effect in mice after peripheral administration. Eur J Pharm Sci 2017; 109:533-540. [DOI: 10.1016/j.ejps.2017.09.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 08/31/2017] [Accepted: 09/02/2017] [Indexed: 10/18/2022]
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19
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Goyal D, Shuaib S, Mann S, Goyal B. Rationally Designed Peptides and Peptidomimetics as Inhibitors of Amyloid-β (Aβ) Aggregation: Potential Therapeutics of Alzheimer's Disease. ACS COMBINATORIAL SCIENCE 2017; 19:55-80. [PMID: 28045249 DOI: 10.1021/acscombsci.6b00116] [Citation(s) in RCA: 150] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease with no clinically accepted treatment to cure or halt its progression. The worldwide effort to develop peptide-based inhibitors of amyloid-β (Aβ) aggregation can be considered an unplanned combinatorial experiment. An understanding of what has been done and achieved may advance our understanding of AD pathology and the discovery of effective therapeutic agents. We review here the history of such peptide-based inhibitors, including those based on the Aβ sequence and those not derived from that sequence, containing both natural and unnatural amino acid building blocks. Peptide-based aggregation inhibitors hold significant promise for future AD therapy owing to their high selectivity, effectiveness, low toxicity, good tolerance, low accumulation in tissues, high chemical and biological diversity, possibility of rational design, and highly developed methods for analyzing their mode of action, proteolytic stability (modified peptides), and blood-brain barrier (BBB) permeability.
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Affiliation(s)
- Deepti Goyal
- Department of Chemistry,
School of Basic and Applied Sciences, Sri Guru Granth Sahib World University, Fatehgarh Sahib-140406, Punjab, India
| | - Suniba Shuaib
- Department of Chemistry,
School of Basic and Applied Sciences, Sri Guru Granth Sahib World University, Fatehgarh Sahib-140406, Punjab, India
| | - Sukhmani Mann
- Department of Chemistry,
School of Basic and Applied Sciences, Sri Guru Granth Sahib World University, Fatehgarh Sahib-140406, Punjab, India
| | - Bhupesh Goyal
- Department of Chemistry,
School of Basic and Applied Sciences, Sri Guru Granth Sahib World University, Fatehgarh Sahib-140406, Punjab, India
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20
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Li H, Rahimi F, Bitan G. Modulation of Amyloid β-Protein (Aβ) Assembly by Homologous C-Terminal Fragments as a Strategy for Inhibiting Aβ Toxicity. ACS Chem Neurosci 2016; 7:845-56. [PMID: 27322435 DOI: 10.1021/acschemneuro.6b00154] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Self-assembly of amyloid β-protein (Aβ) into neurotoxic oligomers and fibrillar aggregates is a key process thought to be the proximal event leading to development of Alzheimer's disease (AD). Therefore, numerous attempts have been made to develop reagents that disrupt this process and prevent the formation of the toxic oligomers and aggregates. An attractive strategy for developing such reagents is to use peptides derived from Aβ based on the assumption that such peptides would bind to full-length Aβ, interfere with binding of additional full-length molecules, and thereby prevent formation of the toxic species. Guided by this rationale, most of the studies in the last two decades have focused on preventing formation of the core cross-β structure of Aβ amyloid fibrils using β-sheet-breaker peptides derived from the central hydrophobic cluster of Aβ. Though this approach is effective in inhibiting fibril formation, it is generally inefficient in preventing Aβ oligomerization. An alternative approach is to use peptides derived from the C-terminus of Aβ, which mediates both oligomerization and fibrillogenesis. This approach has been explored by several groups, including our own, and led to the discovery of several lead peptides with moderate to high inhibitory activity. Interestingly, the mechanisms of these inhibitory effects have been found to be diverse, and only in a small percentage of cases involved interference with β-sheet formation. Here, we review the strategy of using C-terminal fragments of Aβ as modulators of Aβ assembly and discuss the relevant challenges, therapeutic potential, and mechanisms of action of such fragments.
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Affiliation(s)
- Huiyuan Li
- West Virginia University, Morgantown, West Virginia 26506, United States
| | - Farid Rahimi
- Biomedical
Science and Biochemistry, Research School of Biology, The Australian National University, Acton, ACT 2601, Australia
| | - Gal Bitan
- Department
of Neurology, David Geffen School of Medicine, Brain Research Institute,
and Molecular Biology Institute, University of California at Los Angeles, Neuroscience Research Building 1, Room 451 635 Charles E. Young Drive
South, Los Angeles, California 90095-7334, United States
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21
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Fouché M, Schäfer M, Berghausen J, Desrayaud S, Blatter M, Piéchon P, Dix I, Martin Garcia A, Roth HJ. Design and Development of a Cyclic Decapeptide Scaffold with Suitable Properties for Bioavailability and Oral Exposure. ChemMedChem 2016; 11:1048-59. [DOI: 10.1002/cmdc.201600082] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Revised: 03/09/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Marianne Fouché
- Global Discovery Chemistry/Macrocycles; Novartis Institute for BioMedical Research; Basel 4002 Switzerland
| | - Michael Schäfer
- Global Discovery Chemistry/CADD; Novartis Institute for BioMedical Research; Basel 4002 Switzerland
| | - Jörg Berghausen
- Metabolism and Pharmacokinetics; Novartis Institute for BioMedical Research; Basel 4002 Switzerland
| | - Sandrine Desrayaud
- Metabolism and Pharmacokinetics; Novartis Institute for BioMedical Research; Basel 4002 Switzerland
| | - Markus Blatter
- Global Discovery Chemistry/Analytics (NMR); Novartis Institute for BioMedical Research; Basel 4002 Switzerland
| | - Philippe Piéchon
- Global Discovery Chemistry/Analytics (Crystallography); Novartis Institute for BioMedical Research; Basel 4002 Switzerland
| | - Ina Dix
- Global Discovery Chemistry/Analytics (Crystallography); Novartis Institute for BioMedical Research; Basel 4002 Switzerland
| | - Aimar Martin Garcia
- The University of the Basque Country-Euskal Herriko Unibertsitatea; Campus de Leioa 48949 Leioa Spain
| | - Hans-Jörg Roth
- Global Discovery Chemistry/Macrocycles; Novartis Institute for BioMedical Research; Basel 4002 Switzerland
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22
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Azumah R, Dutta J, Somboro A, Ramtahal M, Chonco L, Parboosing R, Bester L, Kruger H, Naicker T, Essack S, Govender T. In vitro
evaluation of metal chelators as potential metallo- β -lactamase inhibitors. J Appl Microbiol 2016; 120:860-7. [DOI: 10.1111/jam.13085] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 01/15/2016] [Accepted: 01/26/2016] [Indexed: 01/16/2023]
Affiliation(s)
- R. Azumah
- Catalysis and Peptide Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
- Antimicrobial Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
| | - J. Dutta
- Catalysis and Peptide Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
| | - A.M. Somboro
- Catalysis and Peptide Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
- Antimicrobial Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
| | - M. Ramtahal
- Catalysis and Peptide Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
- Antimicrobial Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
| | - L. Chonco
- Department of Virology; National Health Laboratory Service; University of KwaZulu-Natal; Durban South Africa
| | - R. Parboosing
- Department of Virology; National Health Laboratory Service; University of KwaZulu-Natal; Durban South Africa
| | - L.A. Bester
- Biomedical Resource Unit; University of Kwa-Zulu Natal; Durban South Africa
| | - H.G. Kruger
- Catalysis and Peptide Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
| | - T. Naicker
- Catalysis and Peptide Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
| | - S.Y. Essack
- Antimicrobial Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
| | - T. Govender
- Catalysis and Peptide Research Unit; School of Health Sciences; University of Kwa-Zulu Natal; Durban South Africa
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23
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Hayata A, Itoh H, Matsutaka S, Inoue M. Dual Chemical Modification of a Polytheonamide Mimic: Rational Design and Synthesis of Ion-Channel-Forming 48-mer Peptides with Potent Cytotoxicity. Chemistry 2016; 22:3370-3377. [DOI: 10.1002/chem.201504632] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Atsushi Hayata
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Shoko Matsutaka
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences; The University of Tokyo; Hongo Bunkyo-ku Tokyo 113-0033 Japan
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24
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Mutoh H, Sesoko Y, Kuranaga T, Itoh H, Inoue M. The total synthesis and functional evaluation of fourteen stereoisomers of yaku'amide B. The importance of stereochemistry for hydrophobicity and cytotoxicity. Org Biomol Chem 2016; 14:4199-204. [DOI: 10.1039/c6ob00640j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Yaku'amide B is a highly unsaturated linear tridecapeptide and an extremely potent cytotoxin.
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Affiliation(s)
- Hiroyuki Mutoh
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Yusuke Sesoko
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Takefumi Kuranaga
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Hiroaki Itoh
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Masayuki Inoue
- Graduate School of Pharmaceutical Sciences
- The University of Tokyo
- Tokyo 113-0033
- Japan
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25
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Mastellos DC, Yancopoulou D, Kokkinos P, Huber-Lang M, Hajishengallis G, Biglarnia AR, Lupu F, Nilsson B, Risitano AM, Ricklin D, Lambris JD. Compstatin: a C3-targeted complement inhibitor reaching its prime for bedside intervention. Eur J Clin Invest 2015; 45:423-40. [PMID: 25678219 PMCID: PMC4380746 DOI: 10.1111/eci.12419] [Citation(s) in RCA: 169] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 02/06/2015] [Indexed: 12/12/2022]
Abstract
There is a growing awareness that complement plays an integral role in human physiology and disease, transcending its traditional perception as an accessory system for pathogen clearance and opsonic cell killing. As the list of pathologies linked to dysregulated complement activation grows longer, it has become clear that targeted modulation of this innate immune system opens new windows of therapeutic opportunity for anti-inflammatory drug design. Indeed, the introduction of the first complement-targeting drugs has reignited a vibrant interest in the clinical translation of complement-based inhibitors. Compstatin was discovered as a cyclic peptide that inhibits complement activation by binding C3 and interfering with convertase formation and C3 cleavage. As the convergence point of all activation pathways and a molecular hub for crosstalk with multiple pathogenic pathways, C3 represents an attractive target for therapeutic modulation of the complement cascade. A multidisciplinary drug optimization effort encompassing rational 'wet' and in silico synthetic approaches and an array of biophysical, structural and analytical tools has culminated in an impressive structure-function refinement of compstatin, yielding a series of analogues that show promise for a wide spectrum of clinical applications. These new derivatives have improved inhibitory potency and pharmacokinetic profiles and show efficacy in clinically relevant primate models of disease. This review provides an up-to-date survey of the drug design effort placed on the compstatin family of C3 inhibitors, highlighting the most promising drug candidates. It also discusses translational challenges in complement drug discovery and peptide drug development and reviews concerns related to systemic C3 interception.
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Affiliation(s)
- Dimitrios C Mastellos
- Division of Biodiagnostic Sciences and Technologies, INRASTES, National Center for Scientific Research 'Demokritos', Aghia Paraskevi Attikis, Greece
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26
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Multifunctional coumarin derivatives: Monoamine oxidase B (MAO-B) inhibition, anti-β-amyloid (Aβ) aggregation and metal chelation properties against Alzheimer’s disease. Bioorg Med Chem Lett 2015; 25:508-13. [DOI: 10.1016/j.bmcl.2014.12.034] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 12/10/2014] [Accepted: 12/11/2014] [Indexed: 01/11/2023]
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27
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Visconti A, Ermondi G, Caron G, Esposito R. Prediction and interpretation of the lipophilicity of small peptides. J Comput Aided Mol Des 2015; 29:361-70. [PMID: 25577035 DOI: 10.1007/s10822-015-9829-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 01/02/2015] [Indexed: 01/28/2023]
Abstract
Peptide-based drug discovery has considerably expanded and solid in silico tools for the prediction of physico-chemical properties of peptides are urgently needed. In this work we tested some combinations of descriptors/algorithms to find the best model to predict [Formula: see text] of a series of peptides. To do that we evaluate the models statistical performances but also their skills in providing a reliable deconvolution of the balance of intermolecular forces governing the partitioning phenomenon. Results prove that a PLS model based on VolSurf+ descriptors is the best tool to predict [Formula: see text] of neutral and ionised peptides. The mechanistic interpretation also reveals that the inclusion in the chemical structure of a HBD group is more efficient in decreasing lipophilicity than the inclusion of a HBA group.
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Affiliation(s)
- Alessia Visconti
- Department of Genomics of Common Disease, Imperial College London, Du Cane Road, W12 ONN, London, UK,
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28
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Md. Abdur Rauf S, Arvidsson PI, Albericio F, Govender T, Maguire GEM, Kruger HG, Honarparvar B. The effect of N-methylation of amino acids (Ac-X-OMe) on solubility and conformation: a DFT study. Org Biomol Chem 2015; 13:9993-10006. [DOI: 10.1039/c5ob01565k] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
N-Methylation of amino acid derivatives (Ac-X-OMe, X = Gly, Val, Leu, Ile, Phe, Met, Cys, Ser, Asp and His) leads to an increase in aqueous solubility, lipophilicity and lowering of the cis/trans amide conformational energy barrier (EA).
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Affiliation(s)
- Shah Md. Abdur Rauf
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Per I. Arvidsson
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Fernando Albericio
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Thavendran Govender
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Glenn E. M. Maguire
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Hendrik G. Kruger
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
| | - Bahareh Honarparvar
- Catalysis and Peptide Research Unit
- School of Health Sciences
- University of KwaZulu-Natal
- Durban 4001
- South Africa
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29
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Farahani MD, Honarparvar B, Albericio F, Maguire GEM, Govender T, Arvidsson PI, Kruger HG. Proline N-oxides: modulators of the 3D conformation of linear peptides through “NO-turns”. Org Biomol Chem 2014; 12:4479-90. [DOI: 10.1039/c4ob00433g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Honarparvar B, Govender T, Maguire GEM, Soliman MES, Kruger HG. Integrated Approach to Structure-Based Enzymatic Drug Design: Molecular Modeling, Spectroscopy, and Experimental Bioactivity. Chem Rev 2013; 114:493-537. [DOI: 10.1021/cr300314q] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Bahareh Honarparvar
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
| | - Thavendran Govender
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
| | - Glenn E. M. Maguire
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
| | - Mahmoud E. S. Soliman
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
| | - Hendrik G. Kruger
- Catalysis
and Peptide Research Unit and ‡School of Health Sciences, University of KwaZulu Natal, Durban 4001, South Africa
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31
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Qu H, Ricklin D, Bai H, Chen H, Reis ES, Maciejewski M, Tzekou A, DeAngelis RA, Resuello RRG, Lupu F, Barlow PN, Lambris JD. New analogs of the clinical complement inhibitor compstatin with subnanomolar affinity and enhanced pharmacokinetic properties. Immunobiology 2013; 218:496-505. [PMID: 22795972 PMCID: PMC3518557 DOI: 10.1016/j.imbio.2012.06.003] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Accepted: 06/12/2012] [Indexed: 02/04/2023]
Abstract
Therapeutic modulation of the complement system has become increasingly important in line with the growing recognition of the role of complement in numerous diseases. Compstatin, a peptidic inhibitor that acts at the central level of the complement cascade, is currently in clinical evaluation but routes to improve its efficacy have not yet been fully explored. Here, we report improvements in both the inhibitory potency and pharmacokinetic parameters of compstatin that broaden its clinical applications. Selective modification of the compstatin N-terminus with non-proteinogenic amino acids resulted in the first analogue with subnanomolar binding affinity (KD=0.5nM) and other similarly potent derivatives with improved solubility in clinically relevant solvents. Detailed structure-activity relationship studies based on biophysical and computational methods revealed key structural determinants for the observed improvements. Importantly, pharmacokinetic evaluation in non-human primates revealed target-driven elimination kinetics with plasma half-life values exceeding expectations for peptidic drugs (close to 12h). This successful optimization strategy is expected to pave the way for systemic administration of compstatin in a range of clinical conditions.
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Affiliation(s)
- Hongchang Qu
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | - Daniel Ricklin
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | - Hongjun Bai
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | - Hui Chen
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | - Edimara S. Reis
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | - Mateusz Maciejewski
- School of Chemistry and School of Biological Sciences, University of Edinburgh, United Kingdom
| | - Apostolia Tzekou
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | - Robert A. DeAngelis
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
| | | | - Florea Lupu
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, USA
| | - Paul N. Barlow
- School of Chemistry and School of Biological Sciences, University of Edinburgh, United Kingdom
| | - John D. Lambris
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, USA
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Amijee H, Bate C, Williams A, Virdee J, Jeggo R, Spanswick D, Scopes DIC, Treherne JM, Mazzitelli S, Chawner R, Eyers CE, Doig AJ. The N-methylated peptide SEN304 powerfully inhibits Aβ(1-42) toxicity by perturbing oligomer formation. Biochemistry 2012; 51:8338-52. [PMID: 23025847 DOI: 10.1021/bi300415v] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Oligomeric forms of β-amyloid (Aβ) have potent neurotoxic activity and are the primary cause of neuronal injury and cell death in Alzheimer's disease (AD). Compounds that perturb oligomer formation or structure may therefore be therapeutic for AD. We previously reported that d-[(chGly)-(Tyr)-(chGly)-(chGly)-(mLeu)]-NH(2) (SEN304) is able to inhibit Aβ aggregation and toxicity, shown primarily by thioflavin T fluorescence and MTT (Kokkoni, N. et al. (2006) N-Methylated peptide inhibitors of β-amyloid aggregation and toxicity. Optimisation of inhibitor structure. Biochemistry 45, 9906-9918). Here we extensively characterize how SEN304 affects Aβ(1-42) aggregation and toxicity, using biophysical assays (thioflavin T, circular dichroism, SDS-PAGE, size exclusion chromatography, surface plasmon resonance, traveling wave ion mobility mass spectrometry, electron microscopy, ELISA), toxicity assays in cell culture (MTT and lactate dehydrogenase in human SH-SHY5Y cells, mouse neuronal cell death and synaptophysin) and long-term potentiation in a rat hippocampal brain slice. These data, with dose response curves, show that SEN304 is a powerful inhibitor of Aβ(1-42) toxicity, particularly effective at preventing Aβ inhibition of long-term potentiation. It can bind directly to Aβ(1-42), delay β-sheet formation and promote aggregation of toxic oligomers into a nontoxic form, with a different morphology that cannot bind thioflavin T. SEN304 appears to work by inducing aggregation, and hence removal, of Aβ oligomers. It is therefore a promising lead compound for Alzheimer's disease.
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Affiliation(s)
- Hozefa Amijee
- Senexis Limited, Babraham Research Campus, Cambridge CB22 3AT, UK
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Abstract
In this chapter we provided the overall background to the subject of protein aggregation and fibrillogenesis in amyloidogenesis, with introduction and brief discussion of the various topics that are included with the coming chapters. The division of the book into basic science and clinical science sections enables correlation of the topics to be made. The many proteins and peptides that have currently been found to undergo fibrillogenesis are tabulated. A broad technical survey is made, to indicate the vast array of techniques currently available to study aspects of protein oligomerization, aggregation and fibrillogenesis. These are split into three groups and tabulated, as the microscopical techniques, the analytical and biophysical methods, and the biochemical and cellular techniques. A few techniques are discussed, but in most cases only a link to relevant recent literature is provided.
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