1
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Li H, Li J, Chao J, Zhang Z, Qin C. Head-to-tail cyclization for the synthesis of naturally occurring cyclic peptides on organophosphorus small-molecular supports. Org Chem Front 2022. [DOI: 10.1039/d1qo01362a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
4,4′-bis(diphenylphosphinyloxyl) diphenyl ketoxime and 4-diphenyl phospholoxy benzyl alcohol were designed and prepared as supports for peptide synthesis. The total synthesis of cyclic peptides in a resin-free manner was successfully demonstrated.
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Affiliation(s)
- Haidi Li
- MIIT Key Laboratory of Special Functional & Intelligent Polymer materials, MOE Key Laboratory of Supernormal Material Physics & Chemistry, Shaanxi Key Laboratory of Polymer Science & Technology, Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Junyou Li
- MIIT Key Laboratory of Special Functional & Intelligent Polymer materials, MOE Key Laboratory of Supernormal Material Physics & Chemistry, Shaanxi Key Laboratory of Polymer Science & Technology, Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Jie Chao
- MIIT Key Laboratory of Special Functional & Intelligent Polymer materials, MOE Key Laboratory of Supernormal Material Physics & Chemistry, Shaanxi Key Laboratory of Polymer Science & Technology, Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Zixin Zhang
- MIIT Key Laboratory of Special Functional & Intelligent Polymer materials, MOE Key Laboratory of Supernormal Material Physics & Chemistry, Shaanxi Key Laboratory of Polymer Science & Technology, Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
| | - Chuanguang Qin
- MIIT Key Laboratory of Special Functional & Intelligent Polymer materials, MOE Key Laboratory of Supernormal Material Physics & Chemistry, Shaanxi Key Laboratory of Polymer Science & Technology, Department of Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, P. R. China
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2
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Li H, Chao J, Tian G, Hasan J, Jin Y, Zhang Z, Qin C. Resin-free peptide synthesis mediated by tri(4-benzoylphenyl) phosphate (TBP) derivatives as small-molecule supports. Org Chem Front 2020. [DOI: 10.1039/c9qo01480b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A series of novel tri(4-benzoylphenyl) phosphate (TBP) derivatives with unique precipitation-inducing properties were synthesized and used as C-terminal protecting groups of amino acids and recyclable supports in peptide synthesis.
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Affiliation(s)
- Haidi Li
- Shaanxi Key Laboratory of Polymer Science & Technology
- OME Key Laboratory of Supernormal Material Physics & Chemistry
- School of Chemistry and Chemical Engineering
- Northwestern Polytechnical University
- Xi'an
| | - Jie Chao
- Shaanxi Key Laboratory of Polymer Science & Technology
- OME Key Laboratory of Supernormal Material Physics & Chemistry
- School of Chemistry and Chemical Engineering
- Northwestern Polytechnical University
- Xi'an
| | - Guang Tian
- Shaanxi Key Laboratory of Polymer Science & Technology
- OME Key Laboratory of Supernormal Material Physics & Chemistry
- School of Chemistry and Chemical Engineering
- Northwestern Polytechnical University
- Xi'an
| | - Jaafar Hasan
- Shaanxi Key Laboratory of Polymer Science & Technology
- OME Key Laboratory of Supernormal Material Physics & Chemistry
- School of Chemistry and Chemical Engineering
- Northwestern Polytechnical University
- Xi'an
| | - Yatao Jin
- Shaanxi Key Laboratory of Polymer Science & Technology
- OME Key Laboratory of Supernormal Material Physics & Chemistry
- School of Chemistry and Chemical Engineering
- Northwestern Polytechnical University
- Xi'an
| | - Zixin Zhang
- Shaanxi Key Laboratory of Polymer Science & Technology
- OME Key Laboratory of Supernormal Material Physics & Chemistry
- School of Chemistry and Chemical Engineering
- Northwestern Polytechnical University
- Xi'an
| | - Chuanguang Qin
- Shaanxi Key Laboratory of Polymer Science & Technology
- OME Key Laboratory of Supernormal Material Physics & Chemistry
- School of Chemistry and Chemical Engineering
- Northwestern Polytechnical University
- Xi'an
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3
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Sagar NR, Durgamma S, Srinivasulu C, Basavaprabhu H, Sureshbabu V. A Unified Approach to Access
N
‐Acyl Sulfonamide Tethered Peptide Conjugates. ChemistrySelect 2019. [DOI: 10.1002/slct.201901024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nagamangala Ramachandra Sagar
- Room No. 109Peptide Research LaboratoryDepartment of ChemistryCentral College CampusDr. B. R. Ambedkar VeedhiBangalore University Bangalore 560 001 India
| | - Suram Durgamma
- Room No. 109Peptide Research LaboratoryDepartment of ChemistryCentral College CampusDr. B. R. Ambedkar VeedhiBangalore University Bangalore 560 001 India
| | - Chinthaginjala Srinivasulu
- Room No. 109Peptide Research LaboratoryDepartment of ChemistryCentral College CampusDr. B. R. Ambedkar VeedhiBangalore University Bangalore 560 001 India
| | - Hosamani Basavaprabhu
- Room No. 109Peptide Research LaboratoryDepartment of ChemistryCentral College CampusDr. B. R. Ambedkar VeedhiBangalore University Bangalore 560 001 India
| | - Vommina Venkata Sureshbabu
- Room No. 109Peptide Research LaboratoryDepartment of ChemistryCentral College CampusDr. B. R. Ambedkar VeedhiBangalore University Bangalore 560 001 India
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4
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Li X, Krafczyk R, Macošek J, Li YL, Zou Y, Simon B, Pan X, Wu QY, Yan F, Li S, Hennig J, Jung K, Lassak J, Hu HG. Resolving the α-glycosidic linkage of arginine-rhamnosylated translation elongation factor P triggers generation of the first Arg Rha specific antibody. Chem Sci 2016; 7:6995-7001. [PMID: 28451135 PMCID: PMC5363779 DOI: 10.1039/c6sc02889f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 07/20/2016] [Indexed: 12/23/2022] Open
Abstract
A previously discovered posttranslational modification strategy - arginine rhamnosylation - is essential for elongation factor P (EF-P) dependent rescue of polyproline stalled ribosomes in clinically relevant species such as Pseudomonas aeruginosa and Neisseria meningitidis. However, almost nothing is known about this new type of N-linked glycosylation. In the present study we used NMR spectroscopy to show for the first time that the α anomer of rhamnose is attached to Arg32 of EF-P, demonstrating that the corresponding glycosyltransferase EarP inverts the sugar of its cognate substrate dTDP-β-l-rhamnose. Based on this finding we describe the synthesis of an α-rhamnosylated arginine containing peptide antigen in order to raise the first anti-rhamnosyl arginine specific antibody (anti-ArgRha). Using ELISA and Western Blot analyses we demonstrated both its high affinity and specificity without any cross-reactivity to other N-glycosylated proteins. Having the anti-ArgRha at hand we were able to visualize endogenously produced rhamnosylated EF-P. Thus, we expect the antibody to be not only important to monitor EF-P rhamnosylation in diverse bacteria but also to identify further rhamnosyl arginine containing proteins. As EF-P rhamnosylation is essential for pathogenicity, our antibody might also be a powerful tool in drug discovery.
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Affiliation(s)
- Xiang Li
- Department of Organic Chemistry , School of Pharmacy , Second Military Medical University , Shanghai 200433 , China .
| | - Ralph Krafczyk
- Department of Biology I, Microbiology , Ludwig Maximilians-Universität München , Munich , Germany.,Center for Integrated Protein Science Munich , Ludwig-Maximilians-Universität München , Munich , Germany .
| | - Jakub Macošek
- Structural and Computational Biology Unit , EMBL Heidelberg , Heidelberg 69117 , Germany
| | - Yu-Lei Li
- Department of Organic Chemistry , School of Pharmacy , Second Military Medical University , Shanghai 200433 , China . .,School of Pharmacy , Wei Fang Medical University , Shandong 261053 , China
| | - Yan Zou
- Department of Organic Chemistry , School of Pharmacy , Second Military Medical University , Shanghai 200433 , China .
| | - Bernd Simon
- Structural and Computational Biology Unit , EMBL Heidelberg , Heidelberg 69117 , Germany
| | - Xing Pan
- Institute of Infection and Immunity , Taihe Hospital , Hubei University of Medicine , Shiyan , Hubei 442000 , China
| | - Qiu-Ye Wu
- Department of Organic Chemistry , School of Pharmacy , Second Military Medical University , Shanghai 200433 , China .
| | - Fang Yan
- School of Pharmacy , Wei Fang Medical University , Shandong 261053 , China
| | - Shan Li
- Institute of Infection and Immunity , Taihe Hospital , Hubei University of Medicine , Shiyan , Hubei 442000 , China
| | - Janosch Hennig
- Structural and Computational Biology Unit , EMBL Heidelberg , Heidelberg 69117 , Germany
| | - Kirsten Jung
- Department of Biology I, Microbiology , Ludwig Maximilians-Universität München , Munich , Germany.,Center for Integrated Protein Science Munich , Ludwig-Maximilians-Universität München , Munich , Germany .
| | - Jürgen Lassak
- Department of Biology I, Microbiology , Ludwig Maximilians-Universität München , Munich , Germany.,Center for Integrated Protein Science Munich , Ludwig-Maximilians-Universität München , Munich , Germany .
| | - Hong-Gang Hu
- Department of Organic Chemistry , School of Pharmacy , Second Military Medical University , Shanghai 200433 , China .
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5
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Zou Y, Zhao Q, Zhang C, Wang L, Li W, Li X, Wu Q, Hu H. Synthesis and antibacterial activities of novel tyrocidine A glycosylated derivatives towards multidrug-resistant pathogens. J Pept Sci 2015; 21:586-92. [DOI: 10.1002/psc.2774] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 02/27/2015] [Accepted: 03/02/2015] [Indexed: 01/26/2023]
Affiliation(s)
- Yan Zou
- Department of Organic Chemistry, School of Pharmacy; Second Military Medical University; Shanghai 200433 China
| | - Qingjie Zhao
- Department of Organic Chemistry, School of Pharmacy; Second Military Medical University; Shanghai 200433 China
| | - Chunmei Zhang
- Department of Organic Chemistry, School of Pharmacy; Second Military Medical University; Shanghai 200433 China
| | - Liang Wang
- Department of Organic Chemistry, School of Pharmacy; Second Military Medical University; Shanghai 200433 China
| | - Wenjuan Li
- Department of Organic Chemistry, School of Pharmacy; Second Military Medical University; Shanghai 200433 China
| | - Xiang Li
- Department of Organic Chemistry, School of Pharmacy; Second Military Medical University; Shanghai 200433 China
| | - Qiuye Wu
- Department of Organic Chemistry, School of Pharmacy; Second Military Medical University; Shanghai 200433 China
| | - Honggang Hu
- Department of Organic Chemistry, School of Pharmacy; Second Military Medical University; Shanghai 200433 China
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6
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Zhao Q, Li X, Li W, Zou Y, Hu H, Wu Q. A facile and efficient method for synthesis of macrocyclic lipoglycopeptide. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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7
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Gunanathan C, Milstein D. Bond activation and catalysis by ruthenium pincer complexes. Chem Rev 2014; 114:12024-87. [PMID: 25398045 DOI: 10.1021/cr5002782] [Citation(s) in RCA: 710] [Impact Index Per Article: 71.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Chidambaram Gunanathan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) , Bhubaneswar 751005, India
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8
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Lian W, Jiang B, Qian Z, Pei D. Cell-permeable bicyclic peptide inhibitors against intracellular proteins. J Am Chem Soc 2014; 136:9830-3. [PMID: 24972263 PMCID: PMC4227718 DOI: 10.1021/ja503710n] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Indexed: 01/21/2023]
Abstract
Cyclic peptides have great potential as therapeutic agents and research tools but are generally impermeable to the cell membrane. Fusion of cyclic peptides with a cyclic cell-penetrating peptide produces bicyclic peptides that are cell-permeable and retain the ability to recognize specific intracellular targets. Application of this strategy to protein tyrosine phosphatase 1B and a peptidyl-prolyl cis-trans isomerase (Pin1) isomerase resulted in potent, selective, proteolytically stable, and biologically active inhibitors against the enzymes.
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Affiliation(s)
- Wenlong Lian
- Department
of Chemistry and
Biochemistry, The Ohio State University, 484 West 12th Avenue, Columbus, Ohio 43210, United States
| | - Bisheng Jiang
- Department
of Chemistry and
Biochemistry, The Ohio State University, 484 West 12th Avenue, Columbus, Ohio 43210, United States
| | - Ziqing Qian
- Department
of Chemistry and
Biochemistry, The Ohio State University, 484 West 12th Avenue, Columbus, Ohio 43210, United States
| | - Dehua Pei
- Department
of Chemistry and
Biochemistry, The Ohio State University, 484 West 12th Avenue, Columbus, Ohio 43210, United States
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9
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Joo SH. Cyclic peptides as therapeutic agents and biochemical tools. Biomol Ther (Seoul) 2014; 20:19-26. [PMID: 24116270 PMCID: PMC3792197 DOI: 10.4062/biomolther.2012.20.1.019] [Citation(s) in RCA: 218] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Revised: 10/10/2011] [Accepted: 10/28/2011] [Indexed: 01/08/2023] Open
Abstract
There are many cyclic peptides with diverse biological activities, such as antibacterial activity, immunosuppressive activity, and anti-tumor activity, and so on. Encouraged by natural cyclic peptides with biological activity, efforts have been made to develop cyclic peptides with both genetic and synthetic methods. The genetic methods include phage display, intein-based cyclic peptides, and mRNA display. The synthetic methods involve individual synthesis, parallel synthesis, as well as split-and-pool synthesis. Recent development of cyclic peptide library based on split-and-pool synthesis allows on-bead screening, in-solution screening, and microarray screening of cyclic peptides for biological activity. Cyclic peptides will be useful as receptor agonist/antagonist, RNA binding molecule, enzyme inhibitor and so on, and more cyclic peptides will emerge as therapeutic agents and biochemical tools.
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Affiliation(s)
- Sang Hoon Joo
- Laboratory of Biochemistry, College of Pharmacy, Catholic University of Daegu, Gyeongsan 712-702, Republic of Korea
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10
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Loll PJ, Upton EC, Nahoum V, Economou NJ, Cocklin S. The high resolution structure of tyrocidine A reveals an amphipathic dimer. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:1199-207. [PMID: 24530898 DOI: 10.1016/j.bbamem.2014.01.033] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 01/20/2014] [Accepted: 01/27/2014] [Indexed: 11/28/2022]
Abstract
Tyrocidine A, one of the first antibiotics ever to be discovered, is a cyclic decapeptide that binds to membranes of target bacteria, disrupting their integrity. It is active against a broad spectrum of Gram-positive organisms, and has recently engendered interest as a potential scaffold for the development of new drugs to combat antibiotic-resistant pathogens. We present here the X-ray crystal structure of tyrocidine A at a resolution of 0.95Å. The structure reveals that tyrocidine forms an intimate and highly amphipathic homodimer made up of four beta strands that associate into a single, highly curved antiparallel beta sheet. We used surface plasmon resonance and potassium efflux assays to demonstrate that tyrocidine binds tightly to mimetics of bacterial membranes with an apparent dissociation constant (K(D)) of 10 μM, and efficiently permeabilizes bacterial cells at concentrations equal to and below the K(D). Using variant forms of tyrocidine in which the fluorescent probe p-cyano-phenylalanine had been inserted on either the polar or apolar face of the molecule, we performed fluorescence quenching experiments, using both water-soluble and membrane-embedded quenchers. The quenching results, together with the structure, strongly support a membrane association model in which the convex, apolar face of tyrocidine's beta sheet is oriented toward the membrane interior, while the concave, polar face is presented to the aqueous phase.
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Affiliation(s)
- Patrick J Loll
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, PA 19102, USA.
| | - Elizabeth C Upton
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
| | - Virginie Nahoum
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
| | - Nicoleta J Economou
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
| | - Simon Cocklin
- Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, PA 19102, USA
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11
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Tao H, Peng L, Zhang Q. Synthesis of azole-enriched cyclic peptides by a clean solid-phase-based cyclization-cleavage strategy. ACS COMBINATORIAL SCIENCE 2013; 15:447-51. [PMID: 23962348 DOI: 10.1021/co400071y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Naturally occurring azole-enriched cyclic peptides have broad biological and pharmacological activities. Previous synthetic efforts have mainly concentrated on the preparation of individual target molecules in solution phase. A solid-phase-based cyclitive cleavage strategy was deployed here for efficient library synthesis of azole cyclopeptide derivatives, which is part of our continuous efforts for the characterization of potent modulators of multidrug resistance efflux proteins. Procedures were optimized to afford the azole cyclopeptides at high yield and purity, eliminating the need for any chromatographic purification steps. This development is ideal for high throughput library synthesis and screening and will facilitate the ultimate discovery of novel azole cyclopeptides with potent biological activities.
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Affiliation(s)
- Houchao Tao
- Department of Integrative
Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Lingling Peng
- Department of Integrative
Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Qinghai Zhang
- Department of Integrative
Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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12
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Kumarn S, Chimnoi N, Ruchirawat S. Synthesis of integerrimide A by an on-resin tandem Fmoc-deprotection–macrocyclisation approach. Org Biomol Chem 2013; 11:7760-7. [DOI: 10.1039/c3ob41447g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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13
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Bryan A, Joseph L, Bennett JA, Jacobson HI, Andersen TT. Design and synthesis of biologically active peptides: a 'tail' of amino acids can modulate activity of synthetic cyclic peptides. Peptides 2011; 32:2504-10. [PMID: 22015269 PMCID: PMC3230782 DOI: 10.1016/j.peptides.2011.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Revised: 10/05/2011] [Accepted: 10/05/2011] [Indexed: 10/16/2022]
Abstract
In earlier work, we synthesized a cyclic 9-amino acid peptide (AFPep, cyclo[EKTOVNOGN]) and showed it to be useful for prevention and therapy of breast cancer. In an effort to explore the structure-function relationships of AFPep, we have designed analogs that bear a short 'tail' (one or two amino acids) attached to the cyclic peptide distal to its pharmacophore. Analogs that bore a tail of either one or two amino acids, either of which had a hydrophilic moiety in the side chain (e.g., cyclo[EKTOVNOGN]FS) exhibited greatly diminished biological activity (inhibition of estrogen-stimulated uterine growth) relative to AFPep. Analogs that bore a tail of either one or two amino acids which had hydrophobic (aliphatic or aromatic) side chains (e.g., cyclo[EKTOVNOGN]FI) retained (or had enhanced) growth inhibition activity. Combining in the same biological assay a hydrophilic-tailed analog with either AFPep or a hydrophobic-tailed analog resulted in decreased activity relative to that for AFPep or for the hydrophobic-tailed analog alone, suggesting that hydrophilic-tailed analogs are binding to a biologically active receptor. An analog with a disrupted pharmacophore (cyclo[EKTOVGOGN]) exhibited little or no growth inhibition activity. An analog with a hydrophilic tail and a disrupted pharmacophore (cyclo[EKTOVGOGN]FS) exhibited no growth inhibition activity of its own and did not affect the activity of a hydrophobic-tailed analog, but enhanced the growth inhibition activity of AFPep. These results are discussed in the context of a two-receptor model for binding of AFPep and ring-and-tail analogs. We suggest that tails on cyclic peptides may comprise a useful method to enhance diversity of peptide design and specificity of ligand-receptor interactions.
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Affiliation(s)
- Alberto Bryan
- Center for Cardiovascular Science Albany Medical College 47 New Scotland Avenue Albany, NY 12208
| | - Leroy Joseph
- Center for Cardiovascular Science Albany Medical College 47 New Scotland Avenue Albany, NY 12208
| | - James A. Bennett
- Center for Immunology and Microbial Diseases Albany Medical College 47 New Scotland Avenue Albany, NY 12208
| | - Herbert I. Jacobson
- Center for Immunology and Microbial Diseases Albany Medical College 47 New Scotland Avenue Albany, NY 12208
| | - Thomas T. Andersen
- Center for Cardiovascular Science Albany Medical College 47 New Scotland Avenue Albany, NY 12208
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14
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Gnanaprakasam B, Balaraman E, Ben-David Y, Milstein D. Synthesis of Peptides and Pyrazines from β-Amino Alcohols through Extrusion of H2 Catalyzed by Ruthenium Pincer Complexes: Ligand-Controlled Selectivity. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105876] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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15
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Gnanaprakasam B, Balaraman E, Ben-David Y, Milstein D. Synthesis of Peptides and Pyrazines from β-Amino Alcohols through Extrusion of H2 Catalyzed by Ruthenium Pincer Complexes: Ligand-Controlled Selectivity. Angew Chem Int Ed Engl 2011; 50:12240-4. [DOI: 10.1002/anie.201105876] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 10/04/2011] [Indexed: 11/10/2022]
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16
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Feliu L, Oliveras G, Cirac AD, Besalú E, Rosés C, Colomer R, Bardají E, Planas M, Puig T. Antimicrobial cyclic decapeptides with anticancer activity. Peptides 2010; 31:2017-26. [PMID: 20708052 DOI: 10.1016/j.peptides.2010.07.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2010] [Revised: 07/30/2010] [Accepted: 07/30/2010] [Indexed: 11/27/2022]
Abstract
Antimicrobial peptides have been considered as potential candidates for cancer therapy. We report here the cytotoxicity of a library of 66 antibacterial cyclodecapeptides on human carcinoma cell lines, and their effects on apoptosis [as assessed by cleavage of poly(ADP-ribose) polymerase (PARP)] and cell signaling proteins (p53 and ERK1/2) in cultured human cervical carcinoma cells. A design of experiments approach permitted to analyze the results of a subset of 16 peptides and define rules for high anticancer activity against MDA-MB-231 breast carcinoma cells. Eight peptides were identified with IC(50) values ranging from 18.5 to 57.5 μM against the five cell lines tested, being HeLa cells the most sensitive. Among these sequences, BPC88, BPC96, BPC98, and BPC194 displayed specificity and high cytotoxicity against HeLa cells (IC(50) of 22.5-38.5 μM), showed low hemolytic activity and low cytotoxicity to non-malignant fibroblasts, and were stable to proteases in human serum. Induction of apoptosis by these peptides was observed and the apoptotic effect of BPC88 and BPC96 caused a marked decrease on the activated form of ERK1/2 kinase and an induction of p53. We further showed that BPC96 at low doses synergized the cytotoxic effect of cisplatin. These findings suggest that cyclic decapeptides may represent novel anticancer agents providing a new strategy in cancer therapy.
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Affiliation(s)
- Lidia Feliu
- LIPPSO, Department of Chemistry, University of Girona, Campus Montilivi, E-17071 Girona, Spain
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17
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Li Y, Giulionatti M, Houghten RA. Macrolactonization of peptide thioesters catalyzed by imidazole and its application in the synthesis of kahalalide B and analogues. Org Lett 2010; 12:2250-3. [PMID: 20426464 DOI: 10.1021/ol100596p] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The macrolactonization of peptide thioester to yield cyclic depsipeptides was developed using imidazole as a catalyst. This strategy was applied to the synthesis of kahalalide B and its analogues.
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Affiliation(s)
- Yangmei Li
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port St. Lucie, Florida 34987, USA
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18
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Le-Gresley A, Kuhnert N. The Design and Synthesis of Acrylato and Imino Derivatives of Calix[4]arene for Applications in Static and Dynamic Combinatorial Libraries. JOURNAL OF CHEMICAL RESEARCH 2010. [DOI: 10.3184/030823410x12627159407690] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The synthesis of novel calix[4]arene tetra-acrylates and the potential use of macrocyclic platforms in the development of static and dynamic combinatorial libraries (DCL) using reversible imine formationare described. Using such a macrocyclic platform in DCL formation results in a large number of library members while keeping the number of building blocks in the library to a minimum number.
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Affiliation(s)
- Adam Le-Gresley
- Faculty of Health and Medicinal Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
- Pharmacy and Chemistry, Kingston University, Kingston-upon-Thames, Surrey KT1 2EE, UK
| | - Nikolai Kuhnert
- Faculty of Health and Medicinal Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
- School of Engineering and Science, Jacobs University Bremen, Campusring 8, 28759 Bremen, Germany
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19
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Hu H, Xue J, Swarts BM, Wang Q, Wu Q, Guo Z. Synthesis and Antibacterial Activities of N-Glycosylated Derivatives of Tyrocidine A, a Macrocyclic Peptide Antibiotic. J Med Chem 2009; 52:2052-9. [DOI: 10.1021/jm801577r] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Honggang Hu
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Jie Xue
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Benjamin M. Swarts
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Qianli Wang
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Qiuye Wu
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
| | - Zhongwu Guo
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, School of Pharmacy, Second Military Medical University, Shanghai 200433, China
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20
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Zhang Y, Zhou S, Wavreille AS, DeWille J, Pei D. Cyclic peptidyl inhibitors of Grb2 and tensin SH2 domains identified from combinatorial libraries. ACTA ACUST UNITED AC 2008; 10:247-55. [PMID: 18257540 DOI: 10.1021/cc700185g] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cyclic peptides provide attractive lead compounds for drug discovery and excellent molecular probes in biomedical research. In this work, a novel method has been developed for the high-throughput synthesis, screening, and identification of cyclic peptidyl ligands against macromolecular targets. Support-bound cyclic phosphotyrosyl peptide libraries containing randomized amino acid sequences and different ring sizes (theoretical diversity of 3.2 x 10(6)) were synthesized and screened against the SH2 domains of Grb2 and tensin. Potent, selective inhibitors were identified from the libraries and were generally more effective than the corresponding linear peptides. One of the inhibitors selected against the Grb2 SH2 domain inhibited human breast cancer cell growth and disrupted actin filaments. This method should be applicable to the development of cyclic peptidyl inhibitors against other protein domains, enzymes, and receptors.
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Affiliation(s)
- Yanyan Zhang
- Department of Chemistry and Ohio State Biochemistry Program, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, USA
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21
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Liu T, Joo SH, Voorhees JL, Brooks CL, Pei D. Synthesis and screening of a cyclic peptide library: discovery of small-molecule ligands against human prolactin receptor. Bioorg Med Chem 2008; 17:1026-33. [PMID: 18234500 DOI: 10.1016/j.bmc.2008.01.015] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2007] [Revised: 01/09/2008] [Accepted: 01/10/2008] [Indexed: 11/18/2022]
Abstract
Prolactin receptor is involved in normal lactation and reproduction; however, excessive prolactin levels can cause various reproductive disorders such as prolactinomas. Small-molecule antagonists against the human prolactin receptor (hPRLr) thus have potential clinical applications and may serve as useful molecular probes in biomedical research. In this work, we synthesized a large, support-bound cyclic peptide library (theoretical diversity of 1.2x10(7)) on 90-microm TentaGel beads and screened it against the extracellular domain of hPRLr. To facilitate hit identification, each TentaGel bead was spatially segregated into outer and inner layers, with a cyclic peptide displayed on the bead surface while the bead interior contained the corresponding linear peptide. The identity of a positive bead was revealed by sequencing the linear encoding peptide within the bead by partial Edman degradation/mass spectrometry. Screening of the library resulted in 20 hits, two of which were selected for further analysis and shown to bind to hPRLr with dissociation constants of 2-3 microM.
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Affiliation(s)
- Tao Liu
- Ohio State Biochemistry Program, The Ohio State University, Columbus, OH 43210, USA
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22
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Badosa E, Ferre R, Planas M, Feliu L, Besalú E, Cabrefiga J, Bardají E, Montesinos E. A library of linear undecapeptides with bactericidal activity against phytopathogenic bacteria. Peptides 2007; 28:2276-85. [PMID: 17980935 DOI: 10.1016/j.peptides.2007.09.010] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2007] [Revised: 09/17/2007] [Accepted: 09/18/2007] [Indexed: 10/22/2022]
Abstract
A 125-member library of synthetic linear undecapeptides was prepared based on a previously described peptide H-K(1)KLFKKILKF(10)L-NH(2) (BP76) that inhibited in vitro growth of the plant pathogenic bacteria Erwinia amylovora, Xanthomonas axonopodis pv. vesicatoria, and Pseudomonas syringae pv. syringae at low micromolar concentrations. Peptides were designed using a combinatorial chemistry approach by incorporating amino acids possessing various degrees of hydrophobicity and hydrophilicity at positions 1 and 10 and by varying the N-terminus. Library screening for in vitro growth inhibition identified 27, 40 and 113 sequences with MIC values below 7.5 microM against E. amylovora, P. syringae and X. axonopodis, respectively. Cytotoxicity, bactericidal activity and stability towards protease degradation of the most active peptides were also determined. Seven peptides with a good balance between antibacterial and hemolytic activities were identified. Several analogues displayed a bactericidal effect and low susceptibility to protease degradation. The most promising peptides were tested in vivo by evaluating their preventive effect of inhibition of E. amylovora infection in detached apple and pear flowers. The peptide H-KKLFKKILKYL-NH(2) (BP100) showed efficacies in flowers of 63-76% at 100 microM, being more potent than BP76 and only less effective than streptomycin, currently used for fire blight control.
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Affiliation(s)
- Esther Badosa
- Laboratory of Plant Pathology, Institute of Food and Agricultural Technology-CIDSAV-CeRTA, University of Girona, Campus Montilivi, 17071 Girona, Spain
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23
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Abstract
Cyclic peptides are a rich source of biologically active compounds and are produced in nature by plants, bacteria, fungi, and lower sea animals. A high-throughput methodology has been developed for the combinatorial synthesis, screening, and identification of cyclic peptide natural product analogues with improved biological activities or useful new activities. The methodology was applied to generate a library of 1716 tyrocidine A analogues, which were screened for antibacterial activity in 96-well plates. The identity of the active peptides was determined by partial Edman degradation/mass spectrometry. This has resulted in the discovery of a series of tyrocidine analogues that have significantly improved therapeutic indices compared to the natural product. The availability of tyrocidine analogues with varying antibacterial activities has provided important insights into the structure-function relationship of tyrocidine A, which should help reveal its mechanism of action.
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Affiliation(s)
| | - Dehua Pei
- To whom all correspondence should be addressed at: Dehua Pei, Department of Chemistry, The Ohio State University, 100 West 18 Avenue, Columbus, OH 43210. Phone: 614−688−4068; Fax: 614−292−1532; E-mail:
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24
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Merkx R, van Haren MJ, Rijkers DTS, Liskamp RMJ. Resin-Bound Sulfonyl Azides: Efficient Loading and Activation Strategy for the Preparation of the N-Acyl Sulfonamide Linker. J Org Chem 2007; 72:4574-7. [PMID: 17497928 DOI: 10.1021/jo0704513] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This paper describes an optimized protocol for the efficient loading of resin-bound aminoethane sulfonyl azides by either Boc- or Fmoc-protected amino thioacids. The resulting N-acyl sulfonamide is a convenient linker for use in Boc- or Fmoc-based solid-phase peptide synthesis. Activation of the N-acyl sulfonamide via a microwave-assisted alkylation procedure and subsequent treatment with functionalized nucleophiles yields C-terminally modified peptides that can be applied in chemoselective (bio)conjugation or ligation reactions.
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Affiliation(s)
- Remco Merkx
- Department of Medicinal Chemistry and Chemical Biology, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, P. O. Box 80082, 3508 TB Utrecht, The Netherlands
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25
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Monroc S, Badosa E, Besalú E, Planas M, Bardají E, Montesinos E, Feliu L. Improvement of cyclic decapeptides against plant pathogenic bacteria using a combinatorial chemistry approach. Peptides 2006; 27:2575-84. [PMID: 16762457 DOI: 10.1016/j.peptides.2006.05.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2006] [Revised: 05/02/2006] [Accepted: 05/02/2006] [Indexed: 10/24/2022]
Abstract
Cyclic decapeptides were developed based on the previously reported peptide c(LysLeuLysLeuLysPheLysLeuLysGln). These compounds were active against the economically important plant pathogenic bacteria Erwinia amylovora, Pseudomonas syringae and Xanthomonas vesicatoria. A library of 56 cyclic decapeptides was prepared and screened for antibacterial activity and eukaryotic cytotoxicity, and led to the identification of peptides with improved minimum inhibitory concentration (MIC) against P. syringae (3.1-6.2 microM) and X. vesicatoria (1.6-3.1 microM). Notably, peptides active against E. amylovora (MIC of 12.5-25 microM) were found, constituting the first report of cyclic peptides with activity towards this bacteria. A second library based on the structure c(X(1)X(2)X(3)X(4)LysPheLysLysLeuGln) with X being Lys or Leu yielded peptides with optimized activity profiles. The activity against E. amylovora was further improved (MIC of 6.2-12.5 microM) and the best peptides displayed a low eukaryotic cytotoxicity at concentrations 30-120 times higher than the MIC values. A design of experiments permitted to define rules for high antibacterial activity and low cytotoxicity, being the main rule X(2) not equal X(3), and the secondary rule X(4)=Lys. The best analogs can be considered as good candidates for the development of effective antibacterial agents for use in plant protection.
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Affiliation(s)
- Sylvie Monroc
- Laboratori d'Innovació en Processos i Productes de Síntesi Orgànica (LIPPSO), Departament de Química, Universitat de Girona, Campus Montilivi, 17071 Girona, Spain
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26
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27
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Leeds JA, Schmitt EK, Krastel P. Recent developments in antibacterial drug discovery: microbe-derived natural products – from collection to the clinic. Expert Opin Investig Drugs 2006; 15:211-26. [PMID: 16503759 DOI: 10.1517/13543784.15.3.211] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The pharmaceutical industry has historically relied on nature to provide compounds for antibacterial drug discovery. In recent years, several pharmaceutical companies have scaled back their efforts in natural product research. Nevertheless, the screening of natural products for antibacterial activity continues to provide excellent sources of biologically and chemically informative leads for new drugs. New technologies in high-throughput cultivation, genetic approaches to biodiversity and discovery of relatively untapped sources of natural products are expanding the ability to find novel, potent and highly selective antibacterial structures. Advances in purification, dereplication and structure elucidation, combined with the ability to chemically or biologically derivatise hits, aim to make the timeline for natural product-derived drug discovery similar or shorter than that expected for small synthetic molecules. This review addresses the strengths and shortcomings of technologies focused on microbe-derived natural products for antibacterial drug discovery and stresses the need for commitment to these approaches in order to achieve the goal of delivering safe, efficacious and high-quality medicines in the long run.
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Affiliation(s)
- Jennifer A Leeds
- Infectious Diseases Area, Novartis Institutes for BioMedical Research, Cambridge, MA 02139, USA.
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28
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Abstract
Natural products have a long history of success as biologically active leads for therapeutic agents. The ability to prepare analogues and to discover structure-activity relationships is necessary to truly harness the potential of natural products. Recently, combinatorial chemistry has risen to this challenge, and even fairly complex natural products can be targeted for parallel synthesis. Academic and industrial efforts have employed natural products from the peptide, alkaloid, polyketide, and terpenoid and steroid classes in combinatorial chemistry approaches for the production of medicinally important compounds.
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Affiliation(s)
- A Ganesan
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, UK.
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29
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The use of deep cavity tetraformyl calix[4]arenes in the synthesis of static and dynamic macrocyclic libraries. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.01.168] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Heidler P, Link A. N-Acyl-N-alkyl-sulfonamide anchors derived from Kenner’s safety-catch linker: powerful tools in bioorganic and medicinal chemistry. Bioorg Med Chem 2005; 13:585-99. [PMID: 15653327 DOI: 10.1016/j.bmc.2004.10.045] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2004] [Accepted: 10/18/2004] [Indexed: 11/16/2022]
Abstract
In 1971 Kenner et al. introduced the safety-catch principle into solid phase peptide synthesis. Thus two contradicting needs were addressed. On the one hand, sufficient stability of the linker substrate bond to impede hydrolysis or similar side reactions, on the other hand mild chemical conditions allowing for unscathed liberation of the precious products. Over the years this linker type emerged in several different chemical disciplines and nowadays it presents a useful and broadly applicable tool. Recent advancements and applications based on Kenner's safety-catch linker are reviewed.
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Affiliation(s)
- Philipp Heidler
- Faculty of Pharmacy, Philipps-University Marburg, Marbacher Weg 6, D-35032, Germany
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