1
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Yang Y, Xue M. Herringbone Helical Foldamers from Aromatic Ether Derived ϵ-Amino Acid Peptides. Chemistry 2023; 29:e202301832. [PMID: 37641870 DOI: 10.1002/chem.202301832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/28/2023] [Accepted: 08/29/2023] [Indexed: 08/31/2023]
Abstract
Oligomers based on an aromatic ether derived ϵ-amino acid peptides folded into herringbone helical structures, induced by successive NH-O-NH & O-NH-O bifurcated hydrogen bonding interactions and reinforced by π-π stacking between aryls from adjacent layers. The diaryl ether bonds -O- worked both as structural units to provide turn motifs for changing the amplitude of the slope along the axis of helix for herringbone formation, and also as acceptors for hydrogen bonding. Attachment of a single chiral carbon to the C-termini of the peptides induced excess of single-handed screw sense and amplification through the chain propagation as exemplified by chain length dependent circular dichroism (CD) investigations.
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Affiliation(s)
- Yong Yang
- School of Chemistry and Chemical Engineering, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Min Xue
- School of Science, Department of Physics, Key Laboratory of Optical Field Manipulation of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, 310018, China
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2
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Shah SKH, Modi U, Patel K, James A, N S, De S, Vasita R, Prabhakaran P. Site-selective post-modification of short α/γ hybrid foldamers: a powerful approach for molecular diversification towards biomedical applications. Biomater Sci 2023; 11:6210-6222. [PMID: 37526301 DOI: 10.1039/d3bm00766a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The extensive research work in the exhilarating area of foldamers (artificial oligomers possessing well-defined conformation in solution) has shown them to be promising candidates in biomedical research and materials science. The post-modification approach is successful in peptides, proteins, and polymers to modulate their functions. To the best of our knowledge, site-selective post-modification of a foldamer affording molecules with different pendant functional groups within a molecular scaffold has not yet been reported. We demonstrate for the first time that late-stage site-selective functionalization of short hybrid oligomers is an efficient approach to afford molecules with diverse functional groups. In this article, we report the design and synthesis of hybrid peptides with repeating units of leucine (Leu) and 5-amino salicylic acid (ASA), regioselective post-modification, conformational analyses (based on solution-state NMR, circular dichroism and computational studies) and morphological studies of the peptide nanostructures. As a proof-of-concept, we demonstrate the applications of differently modified peptides as drug delivery agents, imaging probes, and anticancer agents. The novel feature of the work is that the difference in reactivity of two phenolic OH groups in short biomimetic peptides was utilized to achieve site-selective post-modification. It is challenging to apply the same approach to short α-peptides having a poor folding tendency, and their post-functionalization may considerably affect their conformation.
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Affiliation(s)
| | - Unnati Modi
- School of Life Sciences, Central University of Gujarat, Gandhinagar 382030, India
| | - Karma Patel
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
| | - Anjima James
- Department of Applied Chemistry, Cochin University of Science and Technology, Kochi 682022, India
| | - Sreerag N
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
| | - Susmita De
- Department of Chemistry, University of Calicut, Calicut 673635, India
| | - Rajesh Vasita
- School of Life Sciences, Central University of Gujarat, Gandhinagar 382030, India
| | - Panchami Prabhakaran
- School of Chemical Sciences, Central University of Gujarat, Gandhinagar 382030, India.
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3
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Lin Q, Lan H, Ma C, Stendall RT, Shankland K, Musgrave RA, Horton PN, Baldauf C, Hofmann H, Butts CP, Müller MM, Cobb AJA. Crystal Structure and NMR of an α,δ-Peptide Foldamer Helix Shows Side-Chains are Well Placed for Bifunctional Catalysis: Application as a Minimalist Aldolase Mimic. ANGEWANDTE CHEMIE (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 135:e202305326. [PMID: 38516402 PMCID: PMC10952562 DOI: 10.1002/ange.202305326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Indexed: 03/23/2024]
Abstract
We report the first NMR and X-ray diffraction (XRD) structures of an unusual 13/11-helix (alternating i, i+1 {NH-O=C} and i, i+3 {C=O-H-N} H-bonds) formed by a heteromeric 1 : 1 sequence of α- and δ-amino acids, and demonstrate the application of this framework towards catalysis. Whilst intramolecular hydrogen bonds (IMHBs) are the clear driver of helix formation in this system, we also observe an apolar interaction between the ethyl residue of one δ-amino acid and the cyclohexyl group of the next δ-residue in the sequence that seems to stabilize one type of helix over another. To the best of our knowledge this type of additional stabilization leading to a specific helical preference has not been observed before. Critically, the helix type realized places the α-residue functionalities in positions proximal enough to engage in bifunctional catalysis as demonstrated in the application of our system as a minimalist aldolase mimic.
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Affiliation(s)
- Qi Lin
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
| | - Hao Lan
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
| | - Chunmiao Ma
- School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074P. R. China
| | - Ryan T. Stendall
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
| | - Kenneth Shankland
- School of ChemistryFood and Pharmacy (SCFP)University of ReadingWhiteknights BerksReadingRG6 6ADUK
| | | | - Peter N. Horton
- EPSRC National Crystallography ServiceSchool of ChemistryUniversity of Southampton HighfieldSouthamptonSO17 1BJUK
| | - Carsten Baldauf
- Fritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinGermany
| | - Hans‐Jörg Hofmann
- Institut für BiochemieUniversität LeipzigBrüderstrasse 3404103LeipzigGermany
| | - Craig P. Butts
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
| | - Manuel M. Müller
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
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4
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Lin Q, Lan H, Ma C, Stendall RT, Shankland K, Musgrave RA, Horton PN, Baldauf C, Hofmann H, Butts CP, Müller MM, Cobb AJA. Crystal Structure and NMR of an α,δ-Peptide Foldamer Helix Shows Side-Chains are Well Placed for Bifunctional Catalysis: Application as a Minimalist Aldolase Mimic. Angew Chem Int Ed Engl 2023; 62:e202305326. [PMID: 37218617 PMCID: PMC10952276 DOI: 10.1002/anie.202305326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 05/24/2023]
Abstract
We report the first NMR and X-ray diffraction (XRD) structures of an unusual 13/11-helix (alternating i, i+1 {NH-O=C} and i, i+3 {C=O-H-N} H-bonds) formed by a heteromeric 1 : 1 sequence of α- and δ-amino acids, and demonstrate the application of this framework towards catalysis. Whilst intramolecular hydrogen bonds (IMHBs) are the clear driver of helix formation in this system, we also observe an apolar interaction between the ethyl residue of one δ-amino acid and the cyclohexyl group of the next δ-residue in the sequence that seems to stabilize one type of helix over another. To the best of our knowledge this type of additional stabilization leading to a specific helical preference has not been observed before. Critically, the helix type realized places the α-residue functionalities in positions proximal enough to engage in bifunctional catalysis as demonstrated in the application of our system as a minimalist aldolase mimic.
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Affiliation(s)
- Qi Lin
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
| | - Hao Lan
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
| | - Chunmiao Ma
- School of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074P. R. China
| | - Ryan T. Stendall
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
| | - Kenneth Shankland
- School of ChemistryFood and Pharmacy (SCFP)University of ReadingWhiteknights BerksReadingRG6 6ADUK
| | | | - Peter N. Horton
- EPSRC National Crystallography ServiceSchool of ChemistryUniversity of Southampton HighfieldSouthamptonSO17 1BJUK
| | - Carsten Baldauf
- Fritz-Haber-Institut der Max-Planck-GesellschaftFaradayweg 4–614195BerlinGermany
| | - Hans‐Jörg Hofmann
- Institut für BiochemieUniversität LeipzigBrüderstrasse 3404103LeipzigGermany
| | - Craig P. Butts
- School of ChemistryUniversity of BristolCantocks CloseBristolBS8 1TSUK
| | - Manuel M. Müller
- Department of ChemistryKing's College London7 Trinity StreetLondonSE1 1DBUK
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5
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Sang P, Cai J. Unnatural helical peptidic foldamers as protein segment mimics. Chem Soc Rev 2023; 52:4843-4877. [PMID: 37401344 PMCID: PMC10389297 DOI: 10.1039/d2cs00395c] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Indexed: 07/05/2023]
Abstract
Unnatural helical peptidic foldamers have attracted considerable attention owing to their unique folding behaviours, diverse artificial protein binding mechanisms, and promising applications in chemical, biological, medical, and material fields. Unlike the conventional α-helix consisting of molecular entities of native α-amino acids, unnatural helical peptidic foldamers are generally comprised of well-defined backbone conformers with unique and unnatural structural parameters. Their folded structures usually arise from unnatural amino acids such as N-substituted glycine, N-substituted-β-alanine, β-amino acid, urea, thiourea, α-aminoxy acid, α-aminoisobutyric acid, aza-amino acid, aromatic amide, γ-amino acid, as well as sulfono-γ-AA amino acid. They can exhibit intriguing and predictable three-dimensional helical structures, generally featuring superior resistance to proteolytic degradation, enhanced bioavailability, and improved chemodiversity, and are promising in mimicking helical segments of various proteins. Although it is impossible to include every piece of research work, we attempt to highlight the research progress in the past 10 years in exploring unnatural peptidic foldamers as protein helical segment mimics, by giving some representative examples and discussing the current challenges and future perspectives. We expect that this review will help elucidate the principles of structural design and applications of existing unnatural helical peptidic foldamers in protein segment mimicry, thereby attracting more researchers to explore and generate novel unnatural peptidic foldamers with unique structural and functional properties, leading to more unprecedented and practical applications.
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Affiliation(s)
- Peng Sang
- Tianjian Laboratory of Advanced Biomedical Sciences, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China.
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
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6
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Teng P, Shao H, Huang B, Xie J, Cui S, Wang K, Cai J. Small Molecular Mimetics of Antimicrobial Peptides as a Promising Therapy To Combat Bacterial Resistance. J Med Chem 2023; 66:2211-2234. [PMID: 36739538 DOI: 10.1021/acs.jmedchem.2c00757] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Clinically, antibiotics are widely used to treat infectious diseases; however, excessive drug abuse and overuse exacerbate the prevalence of drug-resistant bacterial pathogens, making the development of novel antibiotics extremely difficult. Antimicrobial peptide (AMP) is one of the most promising candidates for overcoming bacterial resistance owing to its unique structure and mechanism of action. This study examines the development of small molecular mimetics of AMPs over the past two decades. These mimetics can selectively disrupt membranes, which are the characteristic antibacterial mechanism of AMPs. In addition, the advantages and disadvantages of small AMP mimetics are discussed. The small molecular mimetics of AMPs are anticipated to garner interest and investment in discovering new antibiotics. This Perspective will assist in revitalizing the golden age of antibiotics in the current era of combating bacterial resistance.
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Affiliation(s)
- Peng Teng
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, P. R. China
| | - Haodong Shao
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, P. R. China
| | - Bo Huang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Junqiu Xie
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, P. R. China
| | - Kairong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Institute of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Lanzhou University, West Donggang Road 199, Lanzhou, 730000, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
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7
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Xiao X, Zhou M, Cong Z, Zou J, Liu R. Advance in the Polymerization Strategy for the Synthesis of β-Peptides and β-Peptoids. Chembiochem 2023; 24:e202200368. [PMID: 36226554 DOI: 10.1002/cbic.202200368] [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: 06/29/2022] [Revised: 09/20/2022] [Indexed: 02/04/2023]
Abstract
Peptide mimics, possessing excellent biocompatibility and protease stability, have attracted broad attention and research in the biomedical field. β-Peptides and β-peptoids, as two types of vital peptide mimics, have demonstrated great potential in the field of foldamers, antimicrobials and protein binding, etc. Currently, the main synthetic strategies for β-peptides and β-peptoids include solid-phase synthesis and polymerization. Among them, polymerization in one-pot can minimize the repeated separation and purification used in solid-phase synthesis, and has the advantages of high efficiency and low cost, and can synthesize β-peptides and β-peptoids with high molecular weight. This review summarizes the polymerization methods for β-peptides and β-peptoids. Moreover, future developments of the polymerization method for the synthesis of β-peptides and β-peptoids will be discussed.
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Affiliation(s)
- Ximian Xiao
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Min Zhou
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Zihao Cong
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Jingcheng Zou
- Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China
| | - Runhui Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 200237, Shanghai, China.,Key Laboratory for Ultrafine Materials of Ministry of Education, Frontiers Science Center for Materiobiology and Dynamic Chemistry, Research Center for Biomedical Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 200237, Shanghai, China.,East China University of Science and Technology Shenzhen Research Institute, Shenzhen, China
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8
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α/Sulfono-γ-AA peptide hybrids agonist of GLP-1R with prolonged action both in vitro and in vivo. Acta Pharm Sin B 2022; 13:1648-1659. [PMID: 37139407 PMCID: PMC10149899 DOI: 10.1016/j.apsb.2022.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/22/2022] [Accepted: 10/14/2022] [Indexed: 11/01/2022] Open
Abstract
Peptides are increasingly important resources for biological and therapeutic development, however, their intrinsic susceptibility to proteolytic degradation represents a big hurdle. As a natural agonist for GLP-1R, glucagon-like peptide 1 (GLP-1) is of significant clinical interest for the treatment of type-2 diabetes mellitus, but its in vivo instability and short half-life have largely prevented its therapeutic application. Here, we describe the rational design of a series of α/sulfono-γ-AA peptide hybrid analogues of GLP-1 as the GLP-1R agonists. Certain GLP-1 hybrid analogues exhibited enhanced stability (t 1/2 > 14 days) compared to t 1/2 (<1 day) of GLP-1 in the blood plasma and in vivo. These newly developed peptide hybrids may be viable alternative of semaglutide for type-2 diabetes treatment. Additionally, our findings suggest that sulfono-γ-AA residues could be adopted to substitute canonical amino acids residues to improve the pharmacological activity of peptide-based drugs.
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9
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Angelici G, Bhattacharjee N, Pypec M, Jouffret L, Didierjean C, Jolibois F, Perrin L, Roy O, Taillefumier C. Unveiling the conformational landscape of achiral all- cis tert-butyl β-peptoids. Org Biomol Chem 2022; 20:7907-7915. [PMID: 36173021 DOI: 10.1039/d2ob01351g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis and conformational study of N-substituted β-alanines with tert-butyl side chains is described. The oligomers prepared by submonomer synthesis and block coupling methods are up to 15 residues long and are characterised by amide bonds in the cis-conformation. A conformational study comprising experimental solution NMR spectroscopy, X-ray crystallography and molecular modeling shows that despite their intrinsic higher conformational flexibility compared to their α-peptoid counterparts, this family of achiral oligomers adopt preferred secondary structures including a helical conformation close to that described with (1-naphthyl)ethyl side chains but also a novel ribbon-like conformation.
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Affiliation(s)
- Gaetano Angelici
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
| | - Nicholus Bhattacharjee
- Université de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, F-69622 Villeurbanne, France
| | - Maxime Pypec
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
| | - Laurent Jouffret
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
| | | | - Franck Jolibois
- Université de Toulouse-INSA-UPS, LPCNO, CNRS UMR 5215, 135 av. Rangueil, F-31077, Toulouse, France
| | - Lionel Perrin
- Université de Lyon, Université Claude Bernard Lyon I, CNRS, INSA, CPE, UMR 5246, ICBMS, 1 rue Victor Grignard, F-69622 Villeurbanne, France
| | - Olivier Roy
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
| | - Claude Taillefumier
- Université Clermont Auvergne, Clermont Auvergne INP, CNRS, ICCF, 63000 Clermont-Ferrand, France.
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10
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Sang P, Shi Y, Wei L, Cai J. Helical sulfono-γ-AApeptides with predictable functions in protein recognition. RSC Chem Biol 2022; 3:805-814. [PMID: 35866163 PMCID: PMC9257604 DOI: 10.1039/d2cb00049k] [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: 02/15/2022] [Accepted: 04/21/2022] [Indexed: 12/01/2022] Open
Abstract
Sulfono-γ-AApeptides are a subset of possible sequence-specific foldamers that might be considered for the design of biomimetic drug molecular structures. Although they have been studied for a relatively short period of time, a number of structures and functions have been designed or discovered within this class of unnatural peptides. Examples of utilizing these sulfono-γ-AApeptides have demonstrated the potential that sulfono-γ-AApeptides can offer, however, to date, their application in biomedical sciences yet remains unexplored. This review mainly summarizes the helical folding conformations of sulfono-γ-AApeptides and their biological application as helical mimetics in medicinally relevant protein-protein interactions (PPIs) and assesses their potential for the mimicry of other α-helices for protein recognition in the future.
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Affiliation(s)
- Peng Sang
- Department of Chemistry, University of South Florida 4202 E. Fowler Ave. Tampa FL 33620 USA
| | - Yan Shi
- Department of Chemistry, University of South Florida 4202 E. Fowler Ave. Tampa FL 33620 USA
| | - Lulu Wei
- Department of Chemistry, University of South Florida 4202 E. Fowler Ave. Tampa FL 33620 USA
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida 4202 E. Fowler Ave. Tampa FL 33620 USA
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11
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Chen CH, Liu Y, Eskandari A, Ghimire J, Lin LC, Fang Z, Wimley WC, Ulmschneider JP, Suntharalingam K, Hu CJ, Ulmschneider MB. Integrated Design of a Membrane-Lytic Peptide-Based Intravenous Nanotherapeutic Suppresses Triple-Negative Breast Cancer. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2105506. [PMID: 35246961 PMCID: PMC9069370 DOI: 10.1002/advs.202105506] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/12/2022] [Indexed: 05/30/2023]
Abstract
Membrane-lytic peptides offer broad synthetic flexibilities and design potential to the arsenal of anticancer therapeutics, which can be limited by cytotoxicity to noncancerous cells and induction of drug resistance via stress-induced mutagenesis. Despite continued research efforts on membrane-perforating peptides for antimicrobial applications, success in anticancer peptide therapeutics remains elusive given the muted distinction between cancerous and normal cell membranes and the challenge of peptide degradation and neutralization upon intravenous delivery. Using triple-negative breast cancer as a model, the authors report the development of a new class of anticancer peptides. Through function-conserving mutations, the authors achieved cancer cell selective membrane perforation, with leads exhibiting a 200-fold selectivity over non-cancerogenic cells and superior cytotoxicity over doxorubicin against breast cancer tumorspheres. Upon continuous exposure to the anticancer peptides at growth-arresting concentrations, cancer cells do not exhibit resistance phenotype, frequently observed under chemotherapeutic treatment. The authors further demonstrate efficient encapsulation of the anticancer peptides in 20 nm polymeric nanocarriers, which possess high tolerability and lead to effective tumor growth inhibition in a mouse model of MDA-MB-231 triple-negative breast cancer. This work demonstrates a multidisciplinary approach for enabling translationally relevant membrane-lytic peptides in oncology, opening up a vast chemical repertoire to the arms race against cancer.
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Affiliation(s)
- Charles H. Chen
- Department of ChemistryKing's College LondonLondonSE1 1DBUK
- Synthetic Biology GroupResearch Laboratory of ElectronicsMassachusetts Institute of TechnologyCambridgeMA02139USA
| | - Yu‐Han Liu
- Institute of Biomedical SciencesAcademia SinicaTaipei115Taiwan
| | | | - Jenisha Ghimire
- Department of Biochemistry and Molecular BiologyTulane UniversityNew OrleansLA70112USA
| | | | - Zih‐Syun Fang
- Institute of Biomedical SciencesAcademia SinicaTaipei115Taiwan
| | - William C. Wimley
- Department of Biochemistry and Molecular BiologyTulane UniversityNew OrleansLA70112USA
| | - Jakob P. Ulmschneider
- Department of PhysicsInstitute of Natural SciencesShanghai Jiao Tong UniversityShanghai200240China
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12
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Abstract
We report the development of peptidomimetic antibiotics derived from a natural antimicrobial peptide, human α-defensin 5. By engaging multiple bacterial targets, the lead compound is efficacious in vitro and in vivo against bacteria with highly inducible antibiotic resistance, promising a useful therapeutic agent for the treatment of infections caused by antibiotic-resistant bacteria. Antibiotics with multiple mechanisms of action and broad-spectrum are urgently required to combat the growing health threat posed by resistant pathogenic microorganisms. Combining computational and medicinal chemistry tools, we used the structure of human α-defensin 5 (HD5) to design a class of peptidomimetic antibiotics with improved activity against both gram-negative and gram-positive bacteria. The most promising lead, compound 10, showed potent killing of multiple drug-resistant gram-negative bacteria isolated from patients. Compound 10 exhibited a multiplex mechanism of action through targeting membrane components—outer membrane protein A and lipopolysaccharide, as well as a potential intracellular target—70S ribosome, thus causing membrane perturbation and inhibition of protein synthesis. In vivo efficacy, stability, and safety of compound 10 were also validated. This human defensin-inspired synthetic peptidomimetic could help solve the serious problem of drug resistance to conventional antibiotics.
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13
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Giuffrida SG, Forysiak W, Cwynar P, Szweda R. Shaping Macromolecules for Sensing Applications—From Polymer Hydrogels to Foldamers. Polymers (Basel) 2022; 14:polym14030580. [PMID: 35160568 PMCID: PMC8840496 DOI: 10.3390/polym14030580] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 01/21/2022] [Accepted: 01/23/2022] [Indexed: 12/14/2022] Open
Abstract
Sensors are tools for detecting, recognizing, and recording signals from the surrounding environment. They provide measurable information on chemical or physical changes, and thus are widely used in diagnosis, environment monitoring, food quality checks, or process control. Polymers are versatile materials that find a broad range of applications in sensory devices for the biomedical sector and beyond. Sensory materials are expected to exhibit a measurable change of properties in the presence of an analyte or a stimulus, characterized by high sensitivity and selectivity of the signal. Signal parameters can be tuned by material features connected with the restriction of macromolecule shape by crosslinking or folding. Gels are crosslinked, three-dimensional networks that can form cavities of different sizes and forms, which can be adapted to trap particular analytes. A higher level of structural control can be achieved by foldamers, which are macromolecules that can attain well-defined conformation in solution. By increasing control over the three-dimensional structure, we can improve the selectivity of polymer materials, which is one of the crucial requirements for sensors. Here, we discuss various examples of polymer gels and foldamer-based sensor systems. We have classified and described applied polymer materials and used sensing techniques. Finally, we deliberated the necessity and potential of further exploration of the field towards the increased selectivity of sensory devices.
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Affiliation(s)
- Simone Giuseppe Giuffrida
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, ul. Stabłowicka 147, 54-066 Wrocław, Poland; (S.G.G.); (W.F.); (P.C.)
| | - Weronika Forysiak
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, ul. Stabłowicka 147, 54-066 Wrocław, Poland; (S.G.G.); (W.F.); (P.C.)
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie, 50-383 Wrocław, Poland
| | - Pawel Cwynar
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, ul. Stabłowicka 147, 54-066 Wrocław, Poland; (S.G.G.); (W.F.); (P.C.)
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland
| | - Roza Szweda
- Łukasiewicz Research Network—PORT Polish Center for Technology Development, ul. Stabłowicka 147, 54-066 Wrocław, Poland; (S.G.G.); (W.F.); (P.C.)
- Correspondence:
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14
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Peddi S, Bookout MC, Vemuri GN, Hartley CS. Guest-Driven Control of Folding in a Crown-Ether-Functionalized ortho-Phenylene. J Org Chem 2022; 87:3686-3690. [PMID: 35023738 DOI: 10.1021/acs.joc.1c02605] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A crown-ether-functionalized o-phenylene tetramer has been synthesized and coassembled with monotopic and ditopic, achiral and chiral secondary ammonium ion guests. NMR spectroscopy shows that the o-phenylene forms both 1:1 and 1:2 complexes with monotopic guests while remaining well-folded. Binding of an elongated ditopic guest, however, forces the o-phenylene to misfold by pulling the terminal rings apart. A chiral ditopic guest biases the o-phenylene twist sense.
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Affiliation(s)
- Sumalatha Peddi
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Molly C Bookout
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - Gopi Nath Vemuri
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
| | - C Scott Hartley
- Department of Chemistry & Biochemistry, Miami University, Oxford, Ohio 45056, United States
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15
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Abstract
In this introductory chapter, we first define cell-penetrating peptides (CPPs), give short overview of CPP history and discuss several aspects of CPP classification. Next section is devoted to the mechanism of CPP penetration into the cells, where direct and endocytic internalization of CPP is explained. Kinetics of internalization is discussed more extensively, since this topic is not discussed in other chapters of this book. At the end of this section some features of the thermodynamics of CPP interaction with the membrane is also presented. Finally, we present different cargoes that can be transferred into the cells by CPPs and briefly discuss the effect of cargo on the rate and efficiency of penetration into the cells.
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Affiliation(s)
- Matjaž Zorko
- Medical Faculty, Institute of Biochemistry and Molecular Genetics, University of Ljubljana, Ljubljana, Slovenia.
| | - Ülo Langel
- Department of Biochemistry and Biophysics, University of Stockholm, Stockholm, Sweden.,Institute of Technology, University of Tartu, Tartu, Estonia
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16
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Venugopal N, Moser J, Vojtíčková M, Císařová I, König B, Jahn U. Single Electron Transfer‐Induced Selective α‐Oxygenation of Glycine Derivatives. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Navyasree Venugopal
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
| | - Johannes Moser
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93040 Regensburg Germany
| | - Margaréta Vojtíčková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry Faculty of Science Charles University Hlavova 8 12843 Prague 2 Czech Republic
| | - Burkhard König
- Faculty of Chemistry and Pharmacy University of Regensburg Universitätsstr. 31 93040 Regensburg Germany
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences Flemingovo nam. 2 16610 Prague 6 Czech Republic
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17
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Abdildinova A, Kurth MJ, Gong Y. Solid‐Phase Synthesis of Peptidomimetics with Peptide Backbone Modifications. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100264] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Aizhan Abdildinova
- Innovative Drug Library Research Center Department of Chemistry College of Science Dongguk University 26, 3-ga, Pil-dong, Jung-gu Seoul 04620 Korea
| | - Mark J. Kurth
- Department of Chemistry University of California Davis CA 95616 USA
| | - Young‐Dae Gong
- Innovative Drug Library Research Center Department of Chemistry College of Science Dongguk University 26, 3-ga, Pil-dong, Jung-gu Seoul 04620 Korea
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18
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Li Z, Cai B, Yang W, Chen CL. Hierarchical Nanomaterials Assembled from Peptoids and Other Sequence-Defined Synthetic Polymers. Chem Rev 2021; 121:14031-14087. [PMID: 34342989 DOI: 10.1021/acs.chemrev.1c00024] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In nature, the self-assembly of sequence-specific biopolymers into hierarchical structures plays an essential role in the construction of functional biomaterials. To develop synthetic materials that can mimic and surpass the function of these natural counterparts, various sequence-defined bio- and biomimetic polymers have been developed and exploited as building blocks for hierarchical self-assembly. This review summarizes the recent advances in the molecular self-assembly of hierarchical nanomaterials based on peptoids (or poly-N-substituted glycines) and other sequence-defined synthetic polymers. Modern techniques to monitor the assembly mechanisms and characterize the physicochemical properties of these self-assembly systems are highlighted. In addition, discussions about their potential applications in biomedical sciences and renewable energy are also included. This review aims to highlight essential features of sequence-defined synthetic polymers (e.g., high stability and protein-like high-information content) and how these unique features enable the construction of robust biomimetic functional materials with high programmability and predictability, with an emphasis on peptoids and their self-assembled nanomaterials.
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Affiliation(s)
- Zhiliang Li
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.,Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao, Shandong 266237, China
| | - Bin Cai
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.,School of Chemistry and Chemical Engineering, Shandong University, Shandong 250100, China
| | - Wenchao Yang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.,School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Chun-Long Chen
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States.,Department of Chemical Engineering, University of Washington, Seattle, Washington 98195, United States
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19
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Kleman AF, Dufek DL, Fobe TL, McCaslin DR, Cary BP, Shirts MR, Gellman SH. Potential Foldamers Based on an ortho-Terphenyl Amino Acid. Org Lett 2021; 23:4855-4859. [PMID: 34077213 DOI: 10.1021/acs.orglett.1c01592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe the synthesis and characterization of a new class of oligomers built from a terphenyl-based amino acid. These oligomeric amides are of interest because the adoption of specific conformations could potentially be driven by the coordinated formation of inter-residue hydrogen bonds and aromatic interactions. Although high-resolution structural data have proven inaccessible, circular dichroism and nuclear magnetic resonance studies suggest that the new oligomers fold concomitantly with discrete self-association in chloroform.
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Affiliation(s)
- Adam F Kleman
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Deseree L Dufek
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Theodore L Fobe
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Darrell R McCaslin
- Department of Biochemistry, Biophysics Instrumentation Facility, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Brian P Cary
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - Michael R Shirts
- Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Samuel H Gellman
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
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20
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Fuller AA, Moreno JL, Nguyen MT. Using Fluorescence to Enable Innovative Functions of Foldamers. Isr J Chem 2021. [DOI: 10.1002/ijch.202000109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Amelia A. Fuller
- Department of Chemistry & Biochemistry Santa Clara University 500 El Camino Real Santa Clara CA 95053 USA
| | - Jose L. Moreno
- Department of Chemistry & Biochemistry Santa Clara University 500 El Camino Real Santa Clara CA 95053 USA
| | - Michelle T. Nguyen
- Department of Chemistry & Biochemistry Santa Clara University 500 El Camino Real Santa Clara CA 95053 USA
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21
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Stiernet P, Couturaud B, Bertrand V, Eppe G, De Winter J, Debuigne A. Ugi four-component polymerization of amino acid derivatives: a combinatorial tool for the design of polypeptoids. Polym Chem 2021. [DOI: 10.1039/d1py00109d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The combinatorial Ugi-4C polymerization of amino acid derivatives is attractive for the future development of polypeptoids and resulting applications.
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Affiliation(s)
- Pierre Stiernet
- Center for Education and Research on Macromolecules (CERM)
- CESAM Research Unit
- Department of Chemistry
- University of Liege (ULiege)
- 4000 Liège
| | - Benoit Couturaud
- Univ Paris Est Creteil
- CNRS
- Institut de Chimie et des Matériaux Paris-Est (ICMPE)
- UMR 7182
- 94320 Thiais
| | - Virginie Bertrand
- MC2Lab – Laboratory of Mass Spectrometry
- MolSys Research Unit
- University of Liege (ULiege)
- B-4000 Liège
- Belgium
| | - Gauthier Eppe
- MC2Lab – Laboratory of Mass Spectrometry
- MolSys Research Unit
- University of Liege (ULiege)
- B-4000 Liège
- Belgium
| | - Julien De Winter
- Organic Synthesis and Mass Spectrometry Laboratory
- University of Mons (UMons)
- 7000 Mons
- Belgium
| | - Antoine Debuigne
- Center for Education and Research on Macromolecules (CERM)
- CESAM Research Unit
- Department of Chemistry
- University of Liege (ULiege)
- 4000 Liège
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22
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Ghosh P, Fridman N, Maayan G. From Distinct Metallopeptoids to Self‐Assembled Supramolecular Architectures. Chemistry 2020; 27:634-640. [DOI: 10.1002/chem.202003612] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/25/2020] [Indexed: 12/23/2022]
Affiliation(s)
- Pritam Ghosh
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
| | - Galia Maayan
- Schulich Faculty of Chemistry Technion-Israel Institute of Technology Technion City Haifa 3200008 Israel
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23
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Systematic ‘foldamerization’ of peptide inhibiting p53-MDM2/X interactions by the incorporation of trans- or cis-2-aminocyclopentanecarboxylic acid residues. Eur J Med Chem 2020; 208:112814. [DOI: 10.1016/j.ejmech.2020.112814] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/04/2020] [Accepted: 09/01/2020] [Indexed: 12/18/2022]
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24
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Tao Y, Tao Y. Ugi Reaction of Amino Acids: From Facile Synthesis of Polypeptoids to Sequence-Defined Macromolecules. Macromol Rapid Commun 2020; 42:e2000515. [PMID: 33225562 DOI: 10.1002/marc.202000515] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 10/03/2020] [Indexed: 01/14/2023]
Abstract
Polypeptoids have been prepared and researched for more than 20 years. However, the efficient generation of polypeptoids and sequence-defined polypeptoids faces many challenges and difficulties. The Ugi reaction of amino acids has recently been introduced into polypeptoid chemistry as a new and powerful method to furnish polypeptoids. In the following mini review, the recent progress on the application of the Ugi reaction of amino acids in polypeptoid science, including polypeptoid from sustainable furfural, sequence-defined polypeptoids, and more is summarized. Moreover, the future development of the Ugi reaction of amino acids in polypeptoid science is discussed.
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Affiliation(s)
- Yue Tao
- Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, P. R. China
| | - Youhua Tao
- Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, P. R. China
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25
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Shi Y, Sang P, Lu J, Higbee P, Chen L, Yang L, Odom T, Daughdrill G, Chen J, Cai J. Rational Design of Right-Handed Heterogeneous Peptidomimetics as Inhibitors of Protein-Protein Interactions. J Med Chem 2020; 63:13187-13196. [PMID: 33140956 DOI: 10.1021/acs.jmedchem.0c01638] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Peptidomimetics have gained great attention for their function as protein-protein interaction (PPI) inhibitors. Herein, we report the design and investigation of a series of right-handed helical heterogeneous 1:1 α/Sulfono-γ-AA peptides as unprecedented inhibitors for p53-MDM2 and p53-MDMX. The most potent helical heterogeneous 1:1 α/Sulfono-γ-AA peptides were shown to bind tightly to MDM2 and MDMX, with Kd of 19.3 and 66.8 nM, respectively. Circular dichroism spectra, 2D-NMR spectroscopy, and the computational simulations suggested that these helical sulfono-γ-AA peptides could mimic the critical side chains of p53 and disrupt p53/MDM2 PPI effectively. It was noted that these 1:1 α/Sulfono-γ-AA peptides were completely resistant to proteolytic degradation, boosting their potential for biomedical applications. Furthermore, effective cellular activity is achieved by the stapled 1:1 α/Sulfono-γ-AA peptides, evidenced by significantly enhanced p53 transcriptional activity and much more induced level of MDM2 and p21. The 1:1 α/Sulfono-γ-AA peptides could be an alternative strategy to antagonize a myriad of PPIs.
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Affiliation(s)
- Yan Shi
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida 33620, United States
| | - Peng Sang
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida 33620, United States
| | - Junhao Lu
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, Florida 33612, United States
| | - Pirada Higbee
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida 33620, United States
| | - Lihong Chen
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, Florida 33612, United States
| | - Leixiang Yang
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, Florida 33612, United States
| | - Timothy Odom
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida 33620, United States
| | - Gary Daughdrill
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida 33620, United States
| | - Jiandong Chen
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute, 12902 Magnolia Drive, Tampa, Florida 33612, United States
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave., Tampa, Florida 33620, United States
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26
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Lachowicz JI, Szczepski K, Scano A, Casu C, Fais S, Orrù G, Pisano B, Piras M, Jaremko M. The Best Peptidomimetic Strategies to Undercover Antibacterial Peptides. Int J Mol Sci 2020; 21:E7349. [PMID: 33027928 PMCID: PMC7583890 DOI: 10.3390/ijms21197349] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 09/23/2020] [Accepted: 09/25/2020] [Indexed: 02/05/2023] Open
Abstract
Health-care systems that develop rapidly and efficiently may increase the lifespan of humans. Nevertheless, the older population is more fragile, and is at an increased risk of disease development. A concurrently growing number of surgeries and transplantations have caused antibiotics to be used much more frequently, and for much longer periods of time, which in turn increases microbial resistance. In 1945, Fleming warned against the abuse of antibiotics in his Nobel lecture: "The time may come when penicillin can be bought by anyone in the shops. Then there is the danger that the ignorant man may easily underdose himself and by exposing his microbes to non-lethal quantities of the drug make them resistant". After 70 years, we are witnessing the fulfilment of Fleming's prophecy, as more than 700,000 people die each year due to drug-resistant diseases. Naturally occurring antimicrobial peptides protect all living matter against bacteria, and now different peptidomimetic strategies to engineer innovative antibiotics are being developed to defend humans against bacterial infections.
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Affiliation(s)
- Joanna Izabela Lachowicz
- Department of Medical Sciences and Public Health, University of Cagliari, Cittadella Universitaria, 09042 Monserrato, Italy; (B.P.); (M.P.)
| | - Kacper Szczepski
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;
| | - Alessandra Scano
- Department of Surgical Science, OBL Oral Biotechnology Laboratory, University of Cagliari, 09124 Cagliari, Italy; (A.S.); (C.C.); (S.F.); (G.O.)
| | - Cinzia Casu
- Department of Surgical Science, OBL Oral Biotechnology Laboratory, University of Cagliari, 09124 Cagliari, Italy; (A.S.); (C.C.); (S.F.); (G.O.)
| | - Sara Fais
- Department of Surgical Science, OBL Oral Biotechnology Laboratory, University of Cagliari, 09124 Cagliari, Italy; (A.S.); (C.C.); (S.F.); (G.O.)
| | - Germano Orrù
- Department of Surgical Science, OBL Oral Biotechnology Laboratory, University of Cagliari, 09124 Cagliari, Italy; (A.S.); (C.C.); (S.F.); (G.O.)
| | - Barbara Pisano
- Department of Medical Sciences and Public Health, University of Cagliari, Cittadella Universitaria, 09042 Monserrato, Italy; (B.P.); (M.P.)
| | - Monica Piras
- Department of Medical Sciences and Public Health, University of Cagliari, Cittadella Universitaria, 09042 Monserrato, Italy; (B.P.); (M.P.)
| | - Mariusz Jaremko
- Division of Biological and Environmental Sciences and Engineering (BESE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia;
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27
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Wellhöfer I, Beck J, Frydenvang K, Bräse S, Olsen CA. Increasing the Functional Group Diversity in Helical β-Peptoids: Achievement of Solvent- and pH-Dependent Folding. J Org Chem 2020; 85:10466-10478. [PMID: 32806085 DOI: 10.1021/acs.joc.0c00780] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
We report the synthesis of a series of bis-functionalized β-peptoid oligomers of the hexamer length. This was achieved by synthesizing and incorporating protected amino- or azido-functionalized chiral building blocks into precursor oligomers by a trimer segment coupling strategy. The resulting hexamers were readily elaborated to provide target compounds displaying amino groups, carboxy groups, hydroxy groups, or triazolo-pyridines, which should enable metal ion binding. Analysis of the novel hexamers by circular dichroism (CD) spectroscopy and 1H-13C heteronuclear single quantum coherence nuclear magnetic resonance (HSQC NMR) spectroscopy revealed robust helical folding propensity in acetonitrile. CD analysis showed a solvent-dependent degree of helical content in the structural ensembles when adding different ratios of protic solvents including an aqueous buffer. These studies were enabled by a substantial increase in solubility compared to previously analyzed β-peptoid oligomers. This also allowed for the investigation of the effect of pH on the folding propensity of the amino- and carboxy-functionalized oligomers, respectively. Interestingly, we could show a reversible effect of sequentially adding acid and base, resulting in a switching between compositions of folded ensembles with varying helical content. We envision that the present discoveries can form the basis for the development of functional peptidomimetic materials responsive to external stimuli.
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Affiliation(s)
- Isabelle Wellhöfer
- Center for Biopharmaceuticals & Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen DK-2100, Denmark
| | - Janina Beck
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany
| | - Karla Frydenvang
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen DK-2100, Denmark
| | - Stefan Bräse
- Institute of Biological and Chemical Systems - Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz Platz 1, Eggenstein-Leopoldshafen D-76344, Germany.,Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany
| | - Christian A Olsen
- Center for Biopharmaceuticals & Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen DK-2100, Denmark
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28
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Kirinda VC, Schrage BR, Ziegler CJ, Hartley CS. ortho
‐Phenylene‐Based Macrocyclic Hydrocarbons Assembled Using Olefin Metathesis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000950] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Viraj C. Kirinda
- Department of Chemistry & Biochemistry Miami University 45056 Oxford OH USA
| | | | | | - C. Scott Hartley
- Department of Chemistry & Biochemistry Miami University 45056 Oxford OH USA
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29
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Zhang Y, Yan X, Cao J, Weng P, Miao D, Li Z, Jiang YB. Turn Conformation of β-Amino Acid-Based Short Peptides Promoted by an Amidothiourea Moiety at C-Terminus. J Org Chem 2020; 85:9844-9849. [PMID: 32584574 DOI: 10.1021/acs.joc.0c01139] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A C-terminal amidothiourea motif is shown to promote a β-turn-like folded conformation in a series of β-amino acid-based short peptides in both the solid state and solution phase by an intramolecular 11-membered ring hydrogen bond.
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Affiliation(s)
- Yanhan Zhang
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China
| | - Xiaosheng Yan
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China
| | - Jinlian Cao
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China
| | - Peimin Weng
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China
| | - Daiyu Miao
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China
| | - Zhao Li
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China
| | - Yun-Bao Jiang
- Department of Chemistry, College of Chemistry and Chemical Engineering, the MOE Key Laboratory of Spectrochemical Analysis and Instrumentation, and iChEM, Xiamen University, Xiamen 361005, China
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30
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Shi Y, Sang P, Yin G, Gao R, Liang X, Brzozowski R, Odom T, Eswara P, Zheng Y, Li X, Cai J. Aggregation-Induced Emissive and Circularly Polarized Homogeneous Sulfono-γ-AApeptide Foldamers. ADVANCED OPTICAL MATERIALS 2020; 8:1902122. [PMID: 33072491 PMCID: PMC7567131 DOI: 10.1002/adom.201902122] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 03/22/2020] [Indexed: 05/13/2023]
Abstract
Through our continuous effort in developing a new class of foldamers, we have both designed and synthesized homogenous sulfono-γ-AApeptides using tetraphenylethylene (TPE) moieties attached to the backbone as luminogenic sidechains. Based on previous crystal structures, we have found that these foldamers adopted a left-handed 414-helix. Due to the constraint of the helical scaffold, the rotation of the TPE moieties were restricted, leading to fluorescent emissive properties with high quantum yields not only at the aggregate state but also in solution. Investigation of the relationship between the structure and fluorescence behavior reveals that emission was induced by the combined effect of the aggregation-induced emission (AIE) and the rotated restriction from the backbone. Furthermore, as the packing mode of the luminogens could be precisely adjusted by the helical backbone, these foldamers were found to be circularly polarizable with relatively large luminescence dissymmetry factor (g lum). Interestingly, possessing cationic amphipathic structures similar to that of host-defense peptides (HDPs), these sulfono-γ-AApeptides were able to inhibit the growth of Gram-positive bacteria methicillin-resistant S. aureus (MRSA) through membrane interactions.
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Affiliation(s)
- Yan Shi
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Peng Sang
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Guangqiang Yin
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Ruixuan Gao
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Xiao Liang
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, China
| | - Robert Brzozowski
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Timothy Odom
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Prahathees Eswara
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Youxuan Zheng
- State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, China
| | - Xiaopeng Li
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida 33620, United States
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31
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Zhou M, Qian Y, Xie J, Zhang W, Jiang W, Xiao X, Chen S, Dai C, Cong Z, Ji Z, Shao N, Liu L, Wu Y, Liu R. Poly(2‐Oxazoline)‐Based Functional Peptide Mimics: Eradicating MRSA Infections and Persisters while Alleviating Antimicrobial Resistance. Angew Chem Int Ed Engl 2020; 59:6412-6419. [DOI: 10.1002/anie.202000505] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Indexed: 01/04/2023]
Affiliation(s)
- Min Zhou
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuxin Qian
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Jiayang Xie
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Wenjing Zhang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Weinan Jiang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ximian Xiao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Sheng Chen
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Chengzhi Dai
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zihao Cong
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zhemin Ji
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ning Shao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Longqiang Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuequn Wu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Runhui Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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32
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Zhou M, Qian Y, Xie J, Zhang W, Jiang W, Xiao X, Chen S, Dai C, Cong Z, Ji Z, Shao N, Liu L, Wu Y, Liu R. Poly(2‐Oxazoline)‐Based Functional Peptide Mimics: Eradicating MRSA Infections and Persisters while Alleviating Antimicrobial Resistance. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000505] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Min Zhou
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuxin Qian
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Jiayang Xie
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Wenjing Zhang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Weinan Jiang
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ximian Xiao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Sheng Chen
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Chengzhi Dai
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zihao Cong
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Zhemin Ji
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Ning Shao
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Longqiang Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Yuequn Wu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
| | - Runhui Liu
- State Key Laboratory of Bioreactor EngineeringKey Laboratory for Ultrafine Materials of Ministry of EducationResearch Center for Biomedical Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and Technology Shanghai 200237 China
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33
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Said Stålsmeden A, Paterson AJ, Szigyártó IC, Thunberg L, Johansson JR, Beke-Somfai T, Kann N. Chiral 1,5-disubstituted 1,2,3-triazoles - versatile tools for foldamers and peptidomimetic applications. Org Biomol Chem 2020; 18:1957-1967. [PMID: 32101244 DOI: 10.1039/d0ob00168f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,4- and 1,5-Disubstituted triazole amino acid monomers have gained increasing interest among peptidic foldamers, as they are easily prepared via Cu- and Ru-catalyzed click reactions, with the potential for side chain variation. While the latter is key to their applicability, the synthesis and structural properties of the chiral mono- or disubstituted triazole amino acids have only been partially addressed. We here present the synthesis of all eight possible chiral derivatives of a triazole monomer prepared via a ruthenium-catalyzed azide alkyne cycloaddition (RuAAC). To evaluate the conformational properties of the individual building units, a systematic quantum chemical study was performed on all monomers, indicating their capacity to form several low energy conformers. This feature may be used to effect structural diversity when the monomers are inserted into various peptide sequences. We envisage that these results will facilitate new applications for these artificial oligomeric compounds in diverse areas, ranging from pharmaceutics to biotechnology.
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Affiliation(s)
- Anna Said Stålsmeden
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Göteborg, Sweden.
| | - Andrew J Paterson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Göteborg, Sweden.
| | - Imola Cs Szigyártó
- Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary.
| | - Linda Thunberg
- Early Chemical Development, Pharmaceutical Sciences, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden
| | - Johan R Johansson
- Medicinal Chemistry, Research and Early Development Cardiovascular, Renal and Metabolism, BioPharmaceuticals R&D, AstraZeneca, Gothenburg, Sweden.
| | - Tamás Beke-Somfai
- Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar tudósok krt. 2, H-1117 Budapest, Hungary.
| | - Nina Kann
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-41296 Göteborg, Sweden.
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34
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Morimoto J, Kim J, Kuroda D, Nagatoishi S, Tsumoto K, Sando S. Per-Residue Program of Multiple Backbone Dihedral Angles of β-Peptoids via Backbone Substitutions. J Am Chem Soc 2020; 142:2277-2284. [PMID: 31917919 DOI: 10.1021/jacs.9b10496] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Unique folded structures of natural and synthetic oligomers are the most fundamental basis for their unique functions. N-Substituted β-peptides, or β-peptoids, are synthetic oligomers with great potential to fold into diverse three-dimensional structures because of the existence of four rotatable bonds in a monomer with highly modular synthetic accessibility. However, the existence of the four rotatable bonds poses a challenge for conformational control of β-peptoids. Here, we report a strategy for per-residue programming of two dihedral angles of β-peptoids, which is useful for restricting the conformational space of the oligomers. The oligomer was found to form a unique loop conformation that is stabilized by the backbone rotational restrictions. Circular dichroism and NMR spectroscopic analyses and X-ray crystallographic analysis of the oligomer are presented. The strategy would significantly facilitate the discovery of many more unique folded structures of β-peptoids.
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Affiliation(s)
- Jumpei Morimoto
- Department of Chemistry and Biotechnology, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Jungyeon Kim
- Department of Chemistry and Biotechnology, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Daisuke Kuroda
- Department of Chemistry and Biotechnology, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan.,Department of Bioengineering, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan
| | - Satoru Nagatoishi
- Institute of Medical Science , The University of Tokyo , 4-6-1 Shirokanedai , Minato-ku , Tokyo 108-8639 , Japan
| | - Kouhei Tsumoto
- Department of Chemistry and Biotechnology, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan.,Department of Bioengineering, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan.,Institute of Medical Science , The University of Tokyo , 4-6-1 Shirokanedai , Minato-ku , Tokyo 108-8639 , Japan
| | - Shinsuke Sando
- Department of Chemistry and Biotechnology, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan.,Department of Bioengineering, Graduate School of Engineering , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku , Tokyo 113-8656 , Japan
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35
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Reese HR, Shanahan CC, Proulx C, Menegatti S. Peptide science: A "rule model" for new generations of peptidomimetics. Acta Biomater 2020; 102:35-74. [PMID: 31698048 DOI: 10.1016/j.actbio.2019.10.045] [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: 08/17/2019] [Revised: 10/17/2019] [Accepted: 10/30/2019] [Indexed: 02/07/2023]
Abstract
Peptides have been heavily investigated for their biocompatible and bioactive properties. Though a wide array of functionalities can be introduced by varying the amino acid sequence or by structural constraints, properties such as proteolytic stability, catalytic activity, and phase behavior in solution are difficult or impossible to impart upon naturally occurring α-L-peptides. To this end, sequence-controlled peptidomimetics exhibit new folds, morphologies, and chemical modifications that create new structures and functions. The study of these new classes of polymers, especially α-peptoids, has been highly influenced by the analysis, computational, and design techniques developed for peptides. This review examines techniques to determine primary, secondary, and tertiary structure of peptides, and how they have been adapted to investigate peptoid structure. Computational models developed for peptides have been modified to predict the morphologies of peptoids and have increased in accuracy in recent years. The combination of in vitro and in silico techniques have led to secondary and tertiary structure design principles that mirror those for peptides. We then examine several important developments in peptoid applications inspired by peptides such as pharmaceuticals, catalysis, and protein-binding. A brief survey of alternative backbone structures and research investigating these peptidomimetics shows how the advancement of peptide and peptoid science has influenced the growth of numerous fields of study. As peptide, peptoid, and other peptidomimetic studies continue to advance, we will expect to see higher throughput structural analyses, greater computational accuracy and functionality, and wider application space that can improve human health, solve environmental challenges, and meet industrial needs. STATEMENT OF SIGNIFICANCE: Many historical, chemical, and functional relations draw a thread connecting peptides to their recent cognates, the "peptidomimetics". This review presents a comprehensive survey of this field by highlighting the width and relevance of these familial connections. In the first section, we examine the experimental and computational techniques originally developed for peptides and their morphing into a broader analytical and predictive toolbox. The second section presents an excursus of the structures and properties of prominent peptidomimetics, and how the expansion of the chemical and structural diversity has returned new exciting properties. The third section presents an overview of technological applications and new families of peptidomimetics. As the field grows, new compounds emerge with clear potential in medicine and advanced manufacturing.
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36
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Henriques JCG, Ventura GB, Fernandes CDM, Peres NMR. Optical absorption of single-layer hexagonal boron nitride in the ultraviolet. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:025304. [PMID: 31553957 DOI: 10.1088/1361-648x/ab47b3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this paper we theoretically describe the absorption of hexagonal boron nitride (hBN) single layer. We develop the necessary formalism and present an efficient method for solving the Wannier equation for excitons. We give predictions for the absorption of hBN on quartz and on graphite. We compare our predictions with recently published results (Elias et al 2019 Nat. Commun. 10 2639) for a monolayer of hBN on graphite. The spontaneous radiative lifetime of excitons in hBN is also computed. We argue that the optical properties of hBN in the ultraviolet are very useful for the study of peptides and other biomolecules.
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Affiliation(s)
- J C G Henriques
- Department and Centre of Physics, and QuantaLab, University of Minho, Campus of Gualtar, 4710-057, Braga, Portugal
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37
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Gao SC, Wan K, Fang X, Li YX, Xue M, Yang Y. Determination of association constants and FRET in hydrazide-based molecular duplex strands. Org Chem Front 2020. [DOI: 10.1039/d0qo00746c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The association constants for the hydrazide-based molecular duplex strands can be determined via monitoring the pyrene excimer emission. By mixing pyrene and perylene labelled oligomers, supramolecular substitution reactions induced efficient FRET.
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Affiliation(s)
- Shi-Chang Gao
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Kang Wan
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Xu Fang
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Yong-Xue Li
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Min Xue
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
| | - Yong Yang
- School of Science
- Zhejiang Sci-Tech University
- Hangzhou 310018
- China
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Nimmagadda A, Shi Y, Cai J. γ-AApeptides as a New Strategy for Therapeutic Development. Curr Med Chem 2019; 26:2313-2329. [PMID: 29110596 DOI: 10.2174/0929867324666171107095913] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 11/11/2016] [Accepted: 01/16/2017] [Indexed: 12/30/2022]
Abstract
A new class of peptidomimetics termed as "γ-AApeptides" was recently developed by our group. Similar to other peptidomimetics, γ-AApeptides are resistant to proteolytic degradation, and possess limitless potential to introduce chemically diverse functional groups. γ-AApeptides have shown great promise in biomedical applications. In this article, we will review a few examples of γ-AApeptides with biological potential. Certain γ-AApeptides can permeate cell membranes and therefore they can be used as potential drug carrier. γ-AApeptides can also bind to HIV RNA with high specificity and affinity, suggesting their potential application as anti-HIV agents. Moreover, they can mimic host-defense peptides and display potent and broad-spectrum activity towards a range of drug-resistant bacterial pathogens. They are also potential anti-cancer agents. For instance, they have shown great promise in targeted imaging of tumor in mouse model, and they are also capable of disrupting p53/DNA interactions, and thus antagonize STAT3 signaling pathway. Recently, from combinatorial screening, γ-AApeptides are identified to inhibit Aβ peptide aggregation, and thus they can be developed into potential anti- Alzheimer's disease agent.
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Affiliation(s)
- Alekhya Nimmagadda
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, United States
| | - Yan Shi
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, United States
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, United States
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40
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Comegna D, Del Gatto A, Saviano M, Zaccaro L. On-Bead Peptoid Dimerization Induced by Incorporation of Glycosylated Bridging Units in Submonomer Solid-Phase Approach to Glycopeptoids. Org Lett 2019; 21:4454-4458. [PMID: 31150252 DOI: 10.1021/acs.orglett.9b01242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A study on submonomer solid-phase synthesis of S-glycopeptoids has been carried out by screening different parameters. Dimeric species, featuring glycosylated bridging amino monomers, were found under suitable conditions. These dimers arise from an on-resin cross-linking reaction occurring with the incorporation of a glycoamino submonomer into the growing chain and subsequent nucleophilic attack of the resulting secondary amine to a still unreacted bromoacetylated unit. The arising byproduct can be regarded as a novel dimeric peptoid type.
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Affiliation(s)
- Daniela Comegna
- Institute of Biostructures and Bioimaging-CNR , Via Mezzocannone 16 , 80134 Naples , Italy
| | - Annarita Del Gatto
- Institute of Biostructures and Bioimaging-CNR , Via Mezzocannone 16 , 80134 Naples , Italy.,Interdepartmental Center of Bioactive Peptide , University of Naples Federico II , Via Mezzocannone 16 , 80134 Naples , Italy
| | - Michele Saviano
- Interdepartmental Center of Bioactive Peptide , University of Naples Federico II , Via Mezzocannone 16 , 80134 Naples , Italy.,Institute of Crystallography-CNR , Via Amendola 122/O , 70126 Bari , Italy
| | - Laura Zaccaro
- Institute of Biostructures and Bioimaging-CNR , Via Mezzocannone 16 , 80134 Naples , Italy.,Interdepartmental Center of Bioactive Peptide , University of Naples Federico II , Via Mezzocannone 16 , 80134 Naples , Italy
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41
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Lee KJ, Sable GA, Shin MK, Lim HS. Oligomers of α-ABpeptoid/β 3 -peptide hybrid. Biopolymers 2019; 110:e23289. [PMID: 31150108 DOI: 10.1002/bip.23289] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 05/08/2019] [Accepted: 05/14/2019] [Indexed: 12/20/2022]
Abstract
Peptoids, oligomers of N-substituted glycines, have been attracting increasing interest due to their advantageous properties as peptidomimetics. However, due to the lack of chiral centers and amide hydrogen atoms, peptoids, in general, do not form folding structures except that they have α-chiral side chains. We have recently developed "peptoids with backbone chirality" as a new class of peptoid foldamers called α-ABpeptoids and demonstrated that they could have folding conformations owing to the methyl groups on chiral α-carbons in the backbone structure. Here we report α-ABpeptoid/β3 -peptide oligomers as a unique peptidomimetic structure with a heterogeneous backbone. This hybrid structure contains a mixed α-ABpeptoid and β3 -peptide residues arranged in an alternate manner. These α-ABpeptoid/β3 -peptide oligomers could form intramolecular hydrogen bonding and have better cell permeability relative to pure peptide sequences. These oligomers were shown to adopt ordered folding structures based on circular dichroism studies. Overall, α-ABpeptoid/β3 -peptide oligomers may represent a novel class of peptidomimetic foldamers and will find a wide range of applications in biomedical and material sciences.
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Affiliation(s)
- Kang Ju Lee
- Department of Chemistry and Division of Advanced Material Science, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Ganesh A Sable
- Department of Chemistry and Division of Advanced Material Science, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Min-Kyung Shin
- Department of Chemistry and Division of Advanced Material Science, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Hyun-Suk Lim
- Department of Chemistry and Division of Advanced Material Science, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
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42
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Tao Y, Wang Z, Tao Y. Polypeptoids synthesis based on Ugi reaction: Advances and perspectives. Biopolymers 2019; 110:e23288. [DOI: 10.1002/bip.23288] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 04/27/2019] [Accepted: 04/29/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Yue Tao
- Key Laboratory of Polymer EcomaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
- College of Applied Chemistry and Engineering, University of Science and Technology of China Hefei China
| | - Zhen Wang
- College of Applied Chemistry and Engineering, University of Science and Technology of China Hefei China
- Laboratory of Polymer Composites EngineeringChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
| | - Youhua Tao
- Key Laboratory of Polymer EcomaterialsChangchun Institute of Applied Chemistry, Chinese Academy of Sciences Changchun China
- College of Applied Chemistry and Engineering, University of Science and Technology of China Hefei China
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43
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Marichev KO, Doyle MP. Catalytic asymmetric cycloaddition reactions of enoldiazo compounds. Org Biomol Chem 2019; 17:4183-4195. [PMID: 30924829 PMCID: PMC6484446 DOI: 10.1039/c9ob00478e] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review describes catalytic asymmetric cycloaddition reactions of silyl-protected enoldiazo compounds for the construction of highly functionalized carbo- and heterocycles which possess one or more chiral center(s). The enoldiazo compound or its derivative, donor-acceptor cyclopropene, form electrophilic vinylogous metal carbene intermediates that combine stepwise with nucleophilic dipolar reactants to form products from [3 + 1]-, [3 + 2]-, [3 + 3]-, [3 + 4]-, and [3 + 5]-cycloaddition, generally in high yield and with exceptional stereocontrol and regioselectivity.
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Affiliation(s)
- Kostiantyn O. Marichev
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249, USA.
| | - Michael P. Doyle
- Department of Chemistry, The University of Texas at San Antonio, San Antonio, Texas 78249, USA.
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44
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Wellhöfer I, Frydenvang K, Kotesova S, Christiansen AM, Laursen JS, Olsen CA. Functionalized Helical β-Peptoids. J Org Chem 2019; 84:3762-3779. [DOI: 10.1021/acs.joc.9b00218] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Isabelle Wellhöfer
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Karla Frydenvang
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Simona Kotesova
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Andreas M. Christiansen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Jonas S. Laursen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Christian A. Olsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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Wang S, Tao Y, Wang J, Tao Y, Wang X. A versatile strategy for the synthesis of sequence-defined peptoids with side-chain and backbone diversity via amino acid building blocks. Chem Sci 2019; 10:1531-1538. [PMID: 30809371 PMCID: PMC6357857 DOI: 10.1039/c8sc03415j] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 11/22/2018] [Indexed: 01/05/2023] Open
Abstract
Designing artificial macromolecules with absolute sequence order is still a long-term challenge in polymer chemistry as opposed to natural biopolymers with perfectly defined sequences like proteins and DNA. Herein, we combined amino acid building blocks and iterative Ugi reactions for the de novo design and synthesis of sequence-defined peptoids. The highly efficient strategy provided excellent yields and enables multigram-scale synthesis of perfectly defined peptoids. This new strategy furnishes the broad structural diversity of side chains, as well as backbones. Importantly, the overall hydrophobicity and lower critical solution temperature (LCST) behaviours of these precisely defined peptoids can be logically altered by variation of the sequence. By following the same Ugi chemistry, these peptoids are also conjugated to DNA in a simple way, facilitating the development of novel therapeutics.
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Affiliation(s)
- Shixue Wang
- Key Laboratory of Polymer Ecomaterials , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Renmin Street 5625 , Changchun 130022 , People's Republic of China .
- University of Chinese Academy of Sciences , Beijing 100039 , People's Republic of China
| | - Yue Tao
- Key Laboratory of Polymer Ecomaterials , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Renmin Street 5625 , Changchun 130022 , People's Republic of China .
- University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Jianqun Wang
- Key Laboratory of Polymer Ecomaterials , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Renmin Street 5625 , Changchun 130022 , People's Republic of China .
- University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Youhua Tao
- Key Laboratory of Polymer Ecomaterials , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Renmin Street 5625 , Changchun 130022 , People's Republic of China .
- University of Science and Technology of China , Hefei 230026 , People's Republic of China
| | - Xianhong Wang
- Key Laboratory of Polymer Ecomaterials , Changchun Institute of Applied Chemistry , Chinese Academy of Sciences , Renmin Street 5625 , Changchun 130022 , People's Republic of China .
- University of Science and Technology of China , Hefei 230026 , People's Republic of China
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Amabili P, Calvaresi M, Martelli G, Orena M, Rinaldi S, Sgolastra F. Imidazolidinone-Tethered α-Hydrazidopeptides - Synthesis and Conformational Investigation. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801427] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Paolo Amabili
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
| | - Matteo Calvaresi
- Department of Chemistry “G. Ciamician”; Alma Mater Studiorum University of Bologna; Via Selmi 2 40126 Bologna Italy
| | - Gianluca Martelli
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
| | - Mario Orena
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
| | - Samuele Rinaldi
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
| | - Federica Sgolastra
- Department of Life and Environmental Sciences; Polytechnic University of Marche; Via Brecce Bianche 60131 Ancona Italy
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Baskin M, Zhu H, Qu ZW, Chill JH, Grimme S, Maayan G. Folding of unstructured peptoids and formation of hetero-bimetallic peptoid complexes upon side-chain-to-metal coordination. Chem Sci 2019; 10:620-632. [PMID: 30713653 PMCID: PMC6334629 DOI: 10.1039/c8sc03616k] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/16/2018] [Indexed: 01/05/2023] Open
Abstract
Helices are key structural features in biopolymers, enabling a variety of biological functions. Mimicking these secondary structure motifs has wide potential in the development of biomimetic materials. Peptoids, N-substituted glycine oligomers, are an important class of peptide mimics that can adopt polyproline type helices if the majority of their sequence consists of chiral bulky pendent groups. Such side-chains are structure inducers but they have no functional value. We present here the inclusion of several metal-binding groups in one peptoid oligomer as a new platform towards the development of functional helical peptoids. Thus, we describe the coordination of two metal ions to unstructured peptoids incorporating four 8-hydroxyquinoline (HQ) ligands at fixed positions as two (HQ, HQ) metal binding sites, and a mixture of chiral benzyl and alkyl substituents in varied positions along the peptoid backbone. For the first time, we demonstrate by circular dichroism spectroscopy, solution NMR techniques and high-level DFT calculations that some of these unstructured peptoids can fold upon metal binding to form helical structures. Replacing one HQ ligand with a terpyridine (Terpy) ligand resulted in unique sequences that can selectively coordinate Cu2+ to the (Terpy, HQ) and Zn2+ (or Co2+) to the (HQ, HQ) sites from a solution mixture containing Cu2+ and Zn2+ (or Co2+) ions. Interestingly, the binding of Cu2+ to the (Terpy, HQ) site in one of these peptoids can initiate a conformational change that in turn facilitates the coordination of Zn2+ (or Co2+) ions to the (HQ, HQ) site, demonstrating a unique example of positive allosteric cooperativity in peptide mimics.
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Affiliation(s)
- Maria Baskin
- Schulich Faculty of Chemistry , Technion - Israel Institute of Technology , Technion City , Hailfa 32000 , Israel .
| | - Hui Zhu
- Mulliken Center for Theoretical Chemistry , Rheinische Friedrich-Wilhelms-Universität Bonn , Beringstrasse 4 , 53115 Bonn , Germany
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry , Rheinische Friedrich-Wilhelms-Universität Bonn , Beringstrasse 4 , 53115 Bonn , Germany
| | - Jordan H Chill
- Department of Chemistry , Bar-Ilan University , Ramat Gan 52900 , Israel
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry , Rheinische Friedrich-Wilhelms-Universität Bonn , Beringstrasse 4 , 53115 Bonn , Germany
| | - Galia Maayan
- Schulich Faculty of Chemistry , Technion - Israel Institute of Technology , Technion City , Hailfa 32000 , Israel .
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Solid-Phase Synthesis and Circular Dichroism Study of β-ABpeptoids. Molecules 2019; 24:molecules24010178. [PMID: 30621297 PMCID: PMC6337665 DOI: 10.3390/molecules24010178] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/27/2018] [Accepted: 01/04/2019] [Indexed: 11/17/2022] Open
Abstract
The development of peptidomimetic foldamers that can form well-defined folded structures is highly desirable yet challenging. We previously reported on α-ABpeptoids, oligomers of N-alkylated β2-homoalanines and found that due to the presence of chiral methyl groups at α-positions, α-ABpeptoids were shown to adopt folding conformations. Here, we report β-ABpeptoids having chiral methyl group at β-positions rather than α-positions as a different class of peptoids with backbone chirality. We developed a facile solid-phase synthetic route that enables the synthesis of β-ABpeptoid oligomers ranging from 2-mer to 8-mer in excellent yields. These oligomers were shown to adopt ordered folding conformations based on circular dichroism (CD) and NMR studies. Overall, these results suggest that β-ABpeptoids represent a novel class of peptidomimetic foldamers that will find a wide range of applications in biomedical and material sciences.
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49
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Abstract
Sequence-defined polymer: A promising gateway for the next generation polymeric materials and vast opportunities for new synthetic strategies, functional diversity and its material and biomedical applications.
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Affiliation(s)
| | - Mintu Porel
- Discipline of Chemistry
- Indian Institute of Technology Palakkad
- India
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50
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Wan Y, Baltaze JP, Kouklovsky C, Miclet E, Alezra V. Unexpected dimerization of a tripeptide comprising a β,γ-diamino acid. J Pept Sci 2018; 25:e3143. [DOI: 10.1002/psc.3143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 11/22/2018] [Accepted: 11/30/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Yang Wan
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine; Jiangxi University of Traditional Chinese Medicine; Nanchang China
- Faculté des Sciences d'Orsay, Laboratoire de Méthodologie, Synthèse et Molécules Thérapeutiques, ICMMO, UMR 8182, CNRS; Université Paris-Saclay; Orsay France
| | - Jean-Pierre Baltaze
- Faculté des Sciences d'Orsay, Laboratoire de Méthodologie, Synthèse et Molécules Thérapeutiques, ICMMO, UMR 8182, CNRS; Université Paris-Saclay; Orsay France
| | - Cyrille Kouklovsky
- Faculté des Sciences d'Orsay, Laboratoire de Méthodologie, Synthèse et Molécules Thérapeutiques, ICMMO, UMR 8182, CNRS; Université Paris-Saclay; Orsay France
| | - Emeric Miclet
- Laboratoire des biomolécules; Sorbonne Université, École normale supérieure, PSL University, CNRS; Paris France
| | - Valérie Alezra
- Faculté des Sciences d'Orsay, Laboratoire de Méthodologie, Synthèse et Molécules Thérapeutiques, ICMMO, UMR 8182, CNRS; Université Paris-Saclay; Orsay France
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