1
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Hayashi A, Goto Y, Saito Y, Suga H, Morimoto J, Sando S. Oxidation-guided and collision-induced linearization assists de novo sequencing of thioether macrocyclic peptides. Chem Commun (Camb) 2024. [PMID: 39139063 DOI: 10.1039/d4cc03179b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Oxidation of a thioether linkage in thioether-closed macrocyclic peptides led to collision-induced site-selective linearization of the peptides. This method has allowed for de novo sequencing of thioether macrocyclic peptides. The utility of the sequencing method was demonstrated by identifying the correct peptide sequences from a virtually randomized thioether macrocyclic peptide library.
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Affiliation(s)
- Ayaka Hayashi
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Yuki Goto
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
- Toyota Riken Rising Fellow, Toyota Physical and Chemical Research Institute, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yutaro Saito
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
| | - Hiroaki Suga
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - 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.
| | - Shinsuke Sando
- Department of Bioengineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
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2
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Das S, Nag A. Tetrazine cyclized peptides for one-bead-one-compound library: Synthesis and sequencing. Methods Enzymol 2024; 698:141-167. [PMID: 38886030 DOI: 10.1016/bs.mie.2024.04.015] [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] [Indexed: 06/20/2024]
Abstract
While most FDA-approved peptide drugs are cyclic, robust cyclization chemistry of peptides and the deconvolution of the cyclic peptide sequences using tandem mass spectrometry render cyclic peptide drug discovery difficult. In this chapter, the protocol for the successful synthesis of tetrazine-linked cyclic peptide library in solid phase, which shows both robust cyclization and easy sequence deconvolution, is described. The protocol for the linearization and cleavage of cyclic peptides from the solid phase by simple UV light irradiation, followed by accurate sequencing using tandem mass spectrometry, is described. We describe the troubleshooting for this dithiol bis-arylation reaction and for the successful cleavage of the aryl cyclic peptide into linear form. This method for efficient solid-phase macrocyclization can be used for the rapid production of loop-based peptides and screening for inhibition of protein-protein interactions, by using the covalent inverse electron-demand Diels Alder reaction to supplement the non-covalent interaction between a protein and its peptide binder, isolating highly selective peptides in the process.
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Affiliation(s)
- Samir Das
- Carlson School of Chemistry and Biochemistry, Clark University, Worcester, MA, United States
| | - Arundhati Nag
- Carlson School of Chemistry and Biochemistry, Clark University, Worcester, MA, United States.
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3
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Chen Z, Lim YW, Neo JY, Ting Chan RS, Koh LQ, Yuen TY, Lim YH, Johannes CW, Gates ZP. De Novo Sequencing of Synthetic Bis-cysteine Peptide Macrocycles Enabled by "Chemical Linearization" of Compound Mixtures. Anal Chem 2023; 95:14870-14878. [PMID: 37724843 PMCID: PMC10569172 DOI: 10.1021/acs.analchem.3c01742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 09/04/2023] [Indexed: 09/21/2023]
Abstract
A "chemical linearization" approach was applied to synthetic peptide macrocycles to enable their de novo sequencing from mixtures using nanoliquid chromatography-tandem mass spectrometry (nLC-MS/MS). This approach─previously applied to individual macrocycles but not to mixtures─involves cleavage of the peptide backbone at a defined position to give a product capable of generating sequence-determining fragment ions. Here, we first established the compatibility of "chemical linearization" by Edman degradation with a prominent macrocycle scaffold based on bis-Cys peptides cross-linked with the m-xylene linker, which are of major significance in therapeutics discovery. Then, using macrocycle libraries of known sequence composition, the ability to recover accurate de novo assignments to linearized products was critically tested using performance metrics unique to mixtures. Significantly, we show that linearized macrocycles can be sequenced with lower recall compared to linear peptides but with similar accuracy, which establishes the potential of using "chemical linearization" with synthetic libraries and selection procedures that yield compound mixtures. Sodiated precursor ions were identified as a significant source of high-scoring but inaccurate assignments, with potential implications for improving automated de novo sequencing more generally.
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Affiliation(s)
- Zhi’ang Chen
- Institute
of Molecular and Cell Biology (IMCB), Agency
for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore 138673, Republic of Singapore
- Institute
of Sustainability for Chemicals, Energy and Environment (ISCE), Agency for Science, Technology
and Research (A*STAR), 8 Biomedical Grove, #07-01 Neuros, Singapore 138665, Republic
of Singapore
| | - Yi Wee Lim
- Institute
of Sustainability for Chemicals, Energy and Environment (ISCE), Agency for Science, Technology
and Research (A*STAR), 8 Biomedical Grove, #07-01 Neuros, Singapore 138665, Republic
of Singapore
| | - Jin Yong Neo
- Institute
of Sustainability for Chemicals, Energy and Environment (ISCE), Agency for Science, Technology
and Research (A*STAR), 8 Biomedical Grove, #07-01 Neuros, Singapore 138665, Republic
of Singapore
| | - Rachel Shu Ting Chan
- Institute
of Sustainability for Chemicals, Energy and Environment (ISCE), Agency for Science, Technology
and Research (A*STAR), 8 Biomedical Grove, #07-01 Neuros, Singapore 138665, Republic
of Singapore
| | - Li Quan Koh
- Institute
of Molecular and Cell Biology (IMCB), Agency
for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore 138673, Republic of Singapore
- Institute
of Sustainability for Chemicals, Energy and Environment (ISCE), Agency for Science, Technology
and Research (A*STAR), 8 Biomedical Grove, #07-01 Neuros, Singapore 138665, Republic
of Singapore
| | - Tsz Ying Yuen
- Institute
of Sustainability for Chemicals, Energy and Environment (ISCE), Agency for Science, Technology
and Research (A*STAR), 8 Biomedical Grove, #07-01 Neuros, Singapore 138665, Republic
of Singapore
| | - Yee Hwee Lim
- Institute
of Sustainability for Chemicals, Energy and Environment (ISCE), Agency for Science, Technology
and Research (A*STAR), 8 Biomedical Grove, #07-01 Neuros, Singapore 138665, Republic
of Singapore
| | - Charles W. Johannes
- Institute
of Molecular and Cell Biology (IMCB), Agency
for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore 138673, Republic of Singapore
| | - Zachary P. Gates
- Institute
of Molecular and Cell Biology (IMCB), Agency
for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore 138673, Republic of Singapore
- Institute
of Sustainability for Chemicals, Energy and Environment (ISCE), Agency for Science, Technology
and Research (A*STAR), 8 Biomedical Grove, #07-01 Neuros, Singapore 138665, Republic
of Singapore
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4
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Borges A, Nguyen C, Letendre M, Onasenko I, Kandler R, Nguyen NK, Chen J, Allakhverdova T, Atkinson E, DiChiara B, Wang C, Petler N, Patel H, Nanavati D, Das S, Nag A. Facile de Novo Sequencing of Tetrazine-Cyclized Peptides through UV-Induced Ring-Opening and Cleavage from the Solid Phase. Chembiochem 2023; 24:e202200590. [PMID: 36471561 PMCID: PMC10099459 DOI: 10.1002/cbic.202200590] [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: 10/14/2022] [Revised: 12/05/2022] [Accepted: 12/05/2022] [Indexed: 12/12/2022]
Abstract
While most FDA-approved peptide drugs are cyclic, the robust cyclization chemistry of peptides and the deconvolution of cyclic peptide sequences by using tandem mass spectrometry render cyclic peptide drug discovery difficult. Here we present the successful design of cyclic peptides on solid phase that addresses both of these problems. We demonstrate that this peptide cyclization method using dichloro-s-tetrazine on solid phase allows successful cyclization of a panel of random peptide sequences with various charges and hydrophobicities. The cyclic peptides can be linearized and cleaved from the solid phase by simple UV light irradiation, and we demonstrate that accurate sequence information can be obtained for the UV-cleaved linearized peptides by using tandem mass spectrometry. The tetrazine linker used in the cyclic peptides can further be explored for inverse electron-demand Diels-Alder (IEDDA) reactions for screening or bioconjugation applications in the future.
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Affiliation(s)
- Ariane Borges
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Chi Nguyen
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Madison Letendre
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Iryna Onasenko
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Rene Kandler
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Ngoc K Nguyen
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Jue Chen
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Tamara Allakhverdova
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Emily Atkinson
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Bella DiChiara
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Caroline Wang
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Noa Petler
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Henna Patel
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Dhaval Nanavati
- Global Protein Sciences, AbbVie Bioresearch Center, 100 Research Dr, 01605, Worcester, MA, USA
| | - Samir Das
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
| | - Arundhati Nag
- Carlson School of Chemistry and Biochemistry, Clark University, 950 Main Street, 01610, Worcester, MA, USA
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5
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Wang HM, Seo CD, Lee KJ, Park JH, Lim HS. Evaluation of the cell permeability of bicyclic peptoids and bicyclic peptide-peptoid hybrids. Bioorg Chem 2022; 127:105976. [DOI: 10.1016/j.bioorg.2022.105976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/14/2022] [Accepted: 06/16/2022] [Indexed: 11/02/2022]
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6
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Aquino C, Sarkar M. One Bead-One Compound (OBOC) Peptidomimetic-Encoded Library Synthesis via Split-and-Pool Methods. Methods Mol Biol 2022; 2541:105-120. [PMID: 36083550 DOI: 10.1007/978-1-0716-2545-3_15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Large structurally diverse peptidomimetic chemical libraries have been very useful tools in chemical biology and drug discovery for the identification of therapeutically important compounds with higher affinity and improved pharmacological properties against different protein targets.Here we describe a simple and general method for the submonomer solid phase synthesis of large one bead-one compound (OBOC) peptidomimetic libraries of structurally diverse compounds that can be encoded by mass or genetic methods.
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7
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Herlan CN, Feser D, Schepers U, Bräse S. Bio-instructive materials on-demand - combinatorial chemistry of peptoids, foldamers, and beyond. Chem Commun (Camb) 2021; 57:11131-11152. [PMID: 34611672 DOI: 10.1039/d1cc04237h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Combinatorial chemistry allows for the rapid synthesis of large compound libraries for high throughput screenings in biology, medicinal chemistry, or materials science. Especially compounds from a highly modular design are interesting for the proper investigation of structure-to-activity relationships. Permutations of building blocks result in many similar but unique compounds. The influence of certain structural features on the entire structure can then be monitored and serve as a starting point for the rational design of potent molecules for various applications. Peptoids, a highly diverse class of bioinspired oligomers, suit perfectly for combinatorial chemistry. Their straightforward synthesis on a solid support using repetitive reaction steps ensures easy handling and high throughput. Applying this modular approach, peptoids are readily accessible, and their interchangeable side-chains allow for various structures. Thus, peptoids can easily be tuned in their solubility, their spatial structure, and, consequently, their applicability in various fields of research. Since their discovery, peptoids have been applied as antimicrobial agents, artificial membranes, molecular transporters, and much more. Studying their three-dimensional structure, various foldamers with fascinating, unique properties were discovered. This non-comprehensive review will state the most interesting discoveries made over the past years and arouse curiosity about what may come.
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Affiliation(s)
- Claudine Nicole Herlan
- Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | - Dominik Feser
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Ute Schepers
- Institute of Functional Interfaces (IFG), Karlsruhe Institute of Technology (KIT), Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.,Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz Haber Weg 6, 76131 Karlsruhe, Germany
| | - Stefan Bräse
- Institute of Biological and Chemical Systems-Functional Molecular Systems (IBCS-FMS), Karlsruhe Institute of Technology (KIT), Hermann von Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. .,Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz Haber Weg 6, 76131 Karlsruhe, Germany
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8
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Chu W, Prodromou R, Day KN, Schneible JD, Bacon KB, Bowen JD, Kilgore RE, Catella CM, Moore BD, Mabe MD, Alashoor K, Xu Y, Xiao Y, Menegatti S. Peptides and pseudopeptide ligands: a powerful toolbox for the affinity purification of current and next-generation biotherapeutics. J Chromatogr A 2020; 1635:461632. [PMID: 33333349 DOI: 10.1016/j.chroma.2020.461632] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/14/2020] [Accepted: 10/15/2020] [Indexed: 02/08/2023]
Abstract
Following the consolidation of therapeutic proteins in the fight against cancer, autoimmune, and neurodegenerative diseases, recent advancements in biochemistry and biotechnology have introduced a host of next-generation biotherapeutics, such as CRISPR-Cas nucleases, stem and car-T cells, and viral vectors for gene therapy. With these drugs entering the clinical pipeline, a new challenge lies ahead: how to manufacture large quantities of high-purity biotherapeutics that meet the growing demand by clinics and biotech companies worldwide. The protein ligands employed by the industry are inadequate to confront this challenge: while featuring high binding affinity and selectivity, these ligands require laborious engineering and expensive manufacturing, are prone to biochemical degradation, and pose safety concerns related to their bacterial origin. Peptides and pseudopeptides make excellent candidates to form a new cohort of ligands for the purification of next-generation biotherapeutics. Peptide-based ligands feature excellent target biorecognition, low or no toxicity and immunogenicity, and can be manufactured affordably at large scale. This work presents a comprehensive and systematic review of the literature on peptide-based ligands and their use in the affinity purification of established and upcoming biological drugs. A comparative analysis is first presented on peptide engineering principles, the development of ligands targeting different biomolecular targets, and the promises and challenges connected to the industrial implementation of peptide ligands. The reviewed literature is organized in (i) conventional (α-)peptides targeting antibodies and other therapeutic proteins, gene therapy products, and therapeutic cells; (ii) cyclic peptides and pseudo-peptides for protein purification and capture of viral and bacterial pathogens; and (iii) the forefront of peptide mimetics, such as β-/γ-peptides, peptoids, foldamers, and stimuli-responsive peptides for advanced processing of biologics.
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Affiliation(s)
- Wenning Chu
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Raphael Prodromou
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Kevin N Day
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - John D Schneible
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Kaitlyn B Bacon
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - John D Bowen
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Ryan E Kilgore
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Carly M Catella
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Brandyn D Moore
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Matthew D Mabe
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606
| | - Kawthar Alashoor
- Department of Biochemistry and Biophysics, University of Rochester, Rochester, NY 14642
| | - Yiman Xu
- College of Material Science and Engineering, Donghua University, 201620 Shanghai, People's Republic of China
| | - Yuanxin Xiao
- College of Textile, Donghua University, Songjiang District, Shanghai, 201620, People's Republic of China
| | - Stefano Menegatti
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way room 2-009, Raleigh, NC 27606.
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9
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Pei D, Kubi GA. Developments with bead-based screening for novel drug discovery. Expert Opin Drug Discov 2019; 14:1097-1102. [PMID: 31335229 PMCID: PMC7301614 DOI: 10.1080/17460441.2019.1647164] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 07/19/2019] [Indexed: 01/24/2023]
Abstract
Introduction: Combinatorial chemistry provides a cost-effective method for rapid discovery of drug hits/leads. The one-bead-one-compound (OBOC) library method is in principle ideally suited for this application, because it permits a large number of structurally diverse compounds to be rapidly synthesized and simultaneously screened for binding to a target of interest. However, application of OBOC libraries in drug discovery has encountered significant technical challenges. Areas covered: This Special Report covers the challenges associated with first-generation OBOC libraries (difficulty in structural identification of non-peptidic hits, screening biases and high false positive rates, and poor scalability). It also covers the many strategies developed over the past two decades to overcome these challenges. Expert opinion: With most of the technical challenges now overcome and the advent of powerful intracellular delivery technologies, OBOC libraries of metabolically stable and conformationally rigidified molecules (macrocyclic peptides and peptidomimetics, rigidified acyclic oligomers, and D-peptides) can be routinely synthesized and screened to discover initial hits against previously undruggable targets such as intracellular protein-protein interactions. On the other hand, further developments are still needed to expand the utility of the OBOC method to non-peptidic chemical scaffolds.
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Affiliation(s)
- Dehua Pei
- Department of Chemistry and Biochemistry, The Ohio State University, 484 West 12th Avenue, Columbus, OH 43210, USA
| | - George Appiah Kubi
- Department of Chemistry and Biochemistry, The Ohio State University, 484 West 12th Avenue, Columbus, OH 43210, USA
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10
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Rustagi V, Udugamasooriya DG. Identification of side arm-modified DOTA scaffolds as multi-site binding ligands for cancer cells over normal cells. Bioorg Med Chem Lett 2019; 29:126619. [PMID: 31431362 DOI: 10.1016/j.bmcl.2019.08.023] [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: 07/06/2019] [Revised: 08/09/2019] [Accepted: 08/11/2019] [Indexed: 10/26/2022]
Abstract
The metal-chelated 1,4,7,10-tetraazacyclododecan-1,4,7,10-tetraacetic acid-tetraamide (DOTA) scaffold has been widely used as a contrast agent for diagnostic purposes in positron emission tomography (PET) and magnetic resonance imaging (MRI), but not as a biomarker targetable ligand. While the oxygen atoms at the stem of the four arms of the DOTA scaffold are needed for metal chelation, we previously introduced various physiochemical properties to extend these arms in a chemical library fashion to enhance the imaging contrast mechanism. We developed two such on-bead libraries, with 80 and 76 DOTA derivatives, where one arm was used to attach the DOTA scaffold onto resin beads and the other three arms were chemically modified. We now hypothesized that the chemical moieties used to modify these three arms can also recognize biomarkers on a cell surface. Therefore in this current study, we used such 76 derivatives of DOTA library to screen against HeLa cervical cancer cells. We found that two of the four 'hits' identified displayed higher binding towards HeLa cells than the unmodified parent DOTA. Furthermore, one of those 'hits' displayed better binding towards cervical and prostate cancer cells than lung and breast cancer cells and normal HBEC-3KT and RWPE1 cells. This indicates that this derivative can recognize a biomarker specific for certain types of cancer cells. If the compound has intrinsic activity, this can be used as a theranostic agent for real time therapy monitoring applications in the future. We believe that our DOTA derivative-based library approach can be applied to other types of cell and protein screens on various disease types in the future.
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Affiliation(s)
- Vineeta Rustagi
- Department of Pharmacological & Pharmaceutical Sciences, University of Houston, 4849 Calhoun Rd, Health Building 2, Room 7033, Houston, TX 77204-5037, USA
| | - D Gomika Udugamasooriya
- Department of Pharmacological & Pharmaceutical Sciences, University of Houston, 4849 Calhoun Rd, Health Building 2, Room 7033, Houston, TX 77204-5037, USA; Department of Cancer Systems Imaging, MD Anderson Cancer Center, 1881 East Road, Houston, TX 77030-4009, USA.
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11
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Asif K, O'Brien GL, Goodman SM, Suwal S. Solid phase syntheses of peptoid like arylureido compounds and sequencing of isobars without molecular encoding. Org Biomol Chem 2019; 17:4204-4207. [PMID: 30938397 DOI: 10.1039/c9ob00205g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Arylureido-backbone containing peptoid-like trimers were prepared using the one-bead-one-compound approach. Isobaric molecules were synthesized from isocyanate precursors that contain alkyl halide handles at the ortho and para-positions in the phenyl ring. After chain extension with a primary amine, the piperazine-capped molecules were sequenced using tandem mass spectrometry and successfully identified based on their fragmentation pattern without a need for internal molecular encoding.
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Affiliation(s)
- Kanwal Asif
- Department of Chemistry, SUNY Buffalo State, 1300 Elmwood Ave, Buffalo, NY 14222, USA.
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12
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Agnew HD, Coppock MB, Idso MN, Lai BT, Liang J, McCarthy-Torrens AM, Warren CM, Heath JR. Protein-Catalyzed Capture Agents. Chem Rev 2019; 119:9950-9970. [PMID: 30838853 DOI: 10.1021/acs.chemrev.8b00660] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Protein-catalyzed capture agents (PCCs) are synthetic and modular peptide-based affinity agents that are developed through the use of single-generation in situ click chemistry screens against large peptide libraries. In such screens, the target protein, or a synthetic epitope fragment of that protein, provides a template for selectively promoting the noncopper catalyzed azide-alkyne dipolar cycloaddition click reaction between either a library peptide and a known ligand or a library peptide and the synthetic epitope. The development of epitope-targeted PCCs was motivated by the desire to fully generalize pioneering work from the Sharpless and Finn groups in which in situ click screens were used to develop potent, divalent enzymatic inhibitors. In fact, a large degree of generality has now been achieved. Various PCCs have demonstrated utility for selective protein detection, as allosteric or direct inhibitors, as modulators of protein folding, and as tools for in vivo tumor imaging. We provide a historical context for PCCs and place them within the broader scope of biological and synthetic aptamers. The development of PCCs is presented as (i) Generation I PCCs, which are branched ligands engineered through an iterative, nonepitope-targeted process, and (ii) Generation II PCCs, which are typically developed from macrocyclic peptide libraries and are precisely epitope-targeted. We provide statistical comparisons of Generation II PCCs relative to monoclonal antibodies in which the protein target is the same. Finally, we discuss current challenges and future opportunities of PCCs.
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Affiliation(s)
- Heather D Agnew
- Indi Molecular, Inc. , 6162 Bristol Parkway , Culver City , California 90230 , United States
| | - Matthew B Coppock
- Sensors and Electron Devices Directorate , U.S. Army Research Laboratory , Adelphi , Maryland 20783 , United States
| | - Matthew N Idso
- Institute for Systems Biology , 401 Terry Avenue North , Seattle , Washington 98109-5234 , United States
| | - Bert T Lai
- Indi Molecular, Inc. , 6162 Bristol Parkway , Culver City , California 90230 , United States
| | - JingXin Liang
- Institute for Systems Biology , 401 Terry Avenue North , Seattle , Washington 98109-5234 , United States
| | - Amy M McCarthy-Torrens
- Institute for Systems Biology , 401 Terry Avenue North , Seattle , Washington 98109-5234 , United States
| | - Carmen M Warren
- Indi Molecular, Inc. , 6162 Bristol Parkway , Culver City , California 90230 , United States
| | - James R Heath
- Institute for Systems Biology , 401 Terry Avenue North , Seattle , Washington 98109-5234 , United States
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13
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Yan H, Zhou M, Bhattarai U, Song Y, Zheng M, Cai J, Liang FS. Cyclic Peptidomimetics as Inhibitor for miR-155 Biogenesis. Mol Pharm 2019; 16:914-920. [PMID: 30601666 PMCID: PMC8513084 DOI: 10.1021/acs.molpharmaceut.8b01247] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
miR-155 plays key promoting roles in several cancers and emerges as an important anticancer therapeutic target. However, the discovery of small molecules that target RNAs is challenging. Peptidomimetics have been shown to be a rich source for discovering novel ligands to regulate cellular proteins. However, the potential of using peptidomimetics for RNA targeting is relatively unexplored. To this end, we designed and synthesized members of a novel 320 000 compound macrocyclic peptidomimetic library. An affinity-based screening protocol led to the identification of a pre-miR-155 binder that inhibits oncogenic miR-155 maturation in vitro and in cell and induces cancer cell apoptosis. The results of this investigation demonstrate that macrocyclic peptidomimetics could serve as a new scaffold for RNA targeting.
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Affiliation(s)
- Hao Yan
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, New Mexico 87131, United States
| | - Mi Zhou
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Umesh Bhattarai
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, New Mexico 87131, United States
| | - Yabin Song
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, New Mexico 87131, United States
| | - Mengmeng Zheng
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida, 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Fu-Sen Liang
- Department of Chemistry and Chemical Biology, University of New Mexico, 300 Terrace Street NE, Albuquerque, New Mexico 87131, United States
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14
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15
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Raj M, Elashal HE, Elashal HE, Cohen RD. Cyclic and Lasso Peptides: Sequence Determination, Topology Analysis, and Rotaxane Formation. Angew Chem Int Ed Engl 2018; 57:6150-6154. [PMID: 29645322 PMCID: PMC6080247 DOI: 10.1002/anie.201801299] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Indexed: 01/07/2023]
Abstract
A broadly applicable chemical cleavage methodology to facilitate MS/MS sequencing was developed for macrocyclic and lasso peptides, which hold promise as exciting new therapeutics. Existing methods such as Edman degradation, CNBr cleavage, and enzymatic digestion are either limited in scope or completely fail in cleavage of constrained nonribosomal peptides. Importantly, the new method was utilized for synthesizing a unique peptide-based rotaxane (both cyclic and threaded) from the lasso peptide, benenodin-1 ΔC5.
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Affiliation(s)
- Monika Raj
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL 36830 (USA),
| | - Hader E. Elashal
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, NJ 07079 (USA)
| | - Heidi E. Elashal
- Department of Chemistry and Biochemistry, Seton Hall University, South Orange, NJ 07079 (USA)
| | - Ryan D. Cohen
- Department of Process Research and Development, Merck & Co., Inc., Rahway, NJ 07065 (USA)
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16
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Elashal HE, Cohen RD, Elashal HE, Zong C, Link AJ, Raj M. Cyclic and Lasso Peptides: Sequence Determination, Topology Analysis, and Rotaxane Formation. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801299] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Hader E. Elashal
- Department of Chemistry and Biochemistry Seton Hall University South Orange NJ 07079 USA
| | - Ryan D. Cohen
- Department of Process Research and Development Merck & Co., Inc. Rahway NJ 07065 USA
| | - Heidi E. Elashal
- Department of Chemistry and Biochemistry Seton Hall University South Orange NJ 07079 USA
| | - Chuhan Zong
- Department of Chemistry and Department of Chemical and Biological Engineering Princeton University Princeton NJ 08544 USA
| | - A. James Link
- Department of Chemistry and Department of Chemical and Biological Engineering Princeton University Princeton NJ 08544 USA
| | - Monika Raj
- Department of Chemistry and Biochemistry Auburn University Auburn AL 36830 USA
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17
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Shin MK, Hyun YJ, Lee JH, Lim HS. Comparison of Cell Permeability of Cyclic Peptoids and Linear Peptoids. ACS COMBINATORIAL SCIENCE 2018; 20:237-242. [PMID: 29481042 DOI: 10.1021/acscombsci.7b00194] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Cyclic peptoids are emerging as an attractive class of peptidomimetics. Compared to their linear counterparts, cyclic peptoids should have increased conformational rigidity and preorganized structures, enabling them to bind more tightly to target proteins without major entropy penalty. Because cyclic peptoids lack the amide protons in their backbones like linear peptoids, it is perceived that cyclic peptoids are seemingly cell permeable as much as linear peptoids. However, no systematic investigation for cell permeability of cyclic peptoids has been reported yet. Here, we, for the first time, demonstrate that cyclic peptoids are far more cell permeable than linear counterparts irrespective of their size and side chains. This study highlights that cyclic peptoids, along with combinatorial library and high-throughput screening technologies, will serve as a rich source of protein binding molecules, particularly targeting intracellular proteins, given their excellent cell permeability in addition to their conformational rigidity and proteolytic stability.
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Affiliation(s)
- Min-Kyung Shin
- Department of Chemistry and Division of Advanced Material Science, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Yu-Jung Hyun
- Department of Chemistry and Division of Advanced Material Science, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
| | - Ji Hoon Lee
- New Drug Development Center, Daegu Gyeongbuk Medical Innovation Foundation, Daegu 41061, South Korea
| | - Hyun-Suk Lim
- Department of Chemistry and Division of Advanced Material Science, Pohang University of Science and Technology (POSTECH), Pohang 37673, South Korea
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18
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Elashal HE, Cohen RD, Elashal HE, Raj M. Oxazolidinone-Mediated Sequence Determination of One-Bead One-Compound Cyclic Peptide Libraries. Org Lett 2018; 20:2374-2377. [PMID: 29617143 DOI: 10.1021/acs.orglett.8b00717] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel one-bead one-compound (OBOC) dual ring-opening/cleavage approach for cyclic peptide sequencing was developed. The method selectively modifies serine, cysteine, threonine, and/or glutamic acid to an oxazolidinone-derived moiety, thereby increasing the susceptibility of the modified peptide backbone toward hydrolysis. The resulting linear peptide was then sequenced in 1 min by tandem mass spectrometry on a quadrupole time-of-flight instrument incorporating two-dimensional liquid chromatography and ion mobility spectrometry separation. To evaluate this approach, a library of cyclic peptides was successfully sequenced with 98% overall accuracy, demonstrating its robustness and broad substrate scope.
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Affiliation(s)
- Hader E Elashal
- Department of Chemistry , Seton Hall University , South Orange , New Jersey 07079 , United States
| | - Ryan D Cohen
- Department of Chemistry , Seton Hall University , South Orange , New Jersey 07079 , United States.,Department of Process Research and Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , United States
| | - Heidi E Elashal
- Department of Chemistry , Seton Hall University , South Orange , New Jersey 07079 , United States
| | - Monika Raj
- Department of Chemistry and Biochemistry , Auburn University , Auburn , Alabama 36830 , United States
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19
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CycLS: Accurate, whole-library sequencing of cyclic peptides using tandem mass spectrometry. Bioorg Med Chem 2018; 26:1232-1238. [DOI: 10.1016/j.bmc.2018.01.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 01/27/2018] [Accepted: 01/30/2018] [Indexed: 01/20/2023]
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20
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Northrup JD, Mancini G, Purcell CR, Schafmeister CE. Development of Spiroligomer-Peptoid Hybrids. J Org Chem 2017; 82:13020-13033. [PMID: 29161507 DOI: 10.1021/acs.joc.7b01956] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Creating functional macromolecules that possess the diversity and functionality of proteins poses an enormous challenge, as this requires large, preorganized macromolecules to facilitate interactions. Peptoids have been shown to interact with proteins, and combinatorial libraries of peptoids have been useful in discovering new ligands for protein binding. We have created spiroligomer-peptoid hybrids that have a spirocyclic core that preorganizes functional groups in three-dimensional space. By utilizing spiroligomers, we can reduce the number of rotatable bonds between functional groups while increasing the stereochemical diversity of the molecules. We have synthesized 15 new spiroligomer monomer amines that contain two stereocenters and three functional groups (67-84% yields from a common hydantoin starting material) as well as a spiroligomer trimer 25 with six stereocenters and five functional groups. These 16 amines were used to synthesize five first-generation spiroligomer-peptoids hybrids.
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Affiliation(s)
- Justin D Northrup
- Department of Chemistry, Temple University , Philadelphia, Pennsylvania 19122, United States
| | - Giulia Mancini
- Department of Chemistry, University of the Sciences , Philadelphia, Pennsylvania 19104, United States
| | - Claire R Purcell
- Department of Chemistry, Temple University , Philadelphia, Pennsylvania 19122, United States
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21
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Shi Y, Challa S, Sang P, She F, Li C, Gray GM, Nimmagadda A, Teng P, Odom T, Wang Y, van der Vaart A, Li Q, Cai J. One-Bead-Two-Compound Thioether Bridged Macrocyclic γ-AApeptide Screening Library against EphA2. J Med Chem 2017; 60:9290-9298. [PMID: 29111705 DOI: 10.1021/acs.jmedchem.7b01280] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Identification of molecular ligands that recognize peptides or proteins is significant but poses a fundamental challenge in chemical biology and biomedical sciences. Development of cyclic peptidomimetic library is scarce, and thus discovery of cyclic peptidomimetic ligands for protein targets is rare. Herein we report the unprecedented one-bead-two-compound (OBTC) combinatorial library based on a novel class of the macrocyclic peptidomimetics γ-AApeptides. In the library, we utilized the coding peptide tags synthesized with Dde-protected α-amino acids, which were orthogonal to solid phase synthesis of γ-AApeptides. Employing the thioether linkage, the desired macrocyclic γ-AApeptides were found to be effective for ligand identification. Screening the library against the receptor tyrosine kinase EphA2 led to the discovery of one lead compound that tightly bound to EphA2 (Kd = 81 nM) and potently antagonized EphA2-mediated signaling. This new approach of macrocyclic peptidomimetic library may lead to a novel platform for biomacromolecular surface recognition and function modulation.
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Affiliation(s)
- Yan Shi
- Department of Chemistry, University of South Florida , 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Sridevi Challa
- Department of Molecular Oncology, H. Lee Moffitt Cancer Center and Research Institute , 12902 Magnolia Drive, Tampa, Florida 33612, United States
| | - Peng Sang
- Department of Chemistry, University of South Florida , 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Fengyu She
- Department of Chemistry, University of South Florida , 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Chunpu Li
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Geoffrey M Gray
- Department of Chemistry, University of South Florida , 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Alekhya Nimmagadda
- Department of Chemistry, University of South Florida , 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Peng Teng
- Department of Chemistry, University of South Florida , 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Timothy Odom
- Department of Chemistry, University of South Florida , 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Yan Wang
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Arjan van der Vaart
- Department of Chemistry, University of South Florida , 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
| | - Qi Li
- Department of Medical Oncology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jianfeng Cai
- Department of Chemistry, University of South Florida , 4202 E. Fowler Avenue, Tampa, Florida 33620, United States
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22
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Lee KJ, Lee WS, Yun H, Hyun YJ, Seo CD, Lee CW, Lim HS. Oligomers of N-Substituted β(2)-Homoalanines: Peptoids with Backbone Chirality. Org Lett 2016; 18:3678-81. [PMID: 27404658 DOI: 10.1021/acs.orglett.6b01726] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A new class of peptoid-based peptidomimetics composed of oligomers of N-substituted β(2)-homoalanines is reported. Design, solid-phase synthesis, and preliminary circular dichroism studies of oligomers of N-alkylated β(2)-homoalanines consisting of up to 8-mers are described.
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Affiliation(s)
- Kang Ju Lee
- Departments of Chemistry and Advanced Material Science, Pohang University of Science and Technology (POSTECH) , Pohang 37673, South Korea
| | - Woo Sirl Lee
- Departments of Chemistry and Advanced Material Science, Pohang University of Science and Technology (POSTECH) , Pohang 37673, South Korea
| | - Hyosuk Yun
- Department of Chemistry, Chonnam National University , Gwangju 61186, South Korea
| | - Yu-Jung Hyun
- Departments of Chemistry and Advanced Material Science, Pohang University of Science and Technology (POSTECH) , Pohang 37673, South Korea
| | - Chang Deok Seo
- Departments of Chemistry and Advanced Material Science, Pohang University of Science and Technology (POSTECH) , Pohang 37673, South Korea
| | - Chul Won Lee
- Department of Chemistry, Chonnam National University , Gwangju 61186, South Korea
| | - Hyun-Suk Lim
- Departments of Chemistry and Advanced Material Science, Pohang University of Science and Technology (POSTECH) , Pohang 37673, South Korea.,Department of Biochemistry and Molecular Biology, Indiana University School of Medicine , Indianapolis, Indiana 46202, United States
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23
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Kodadek T, McEnaney PJ. Towards vast libraries of scaffold-diverse, conformationally constrained oligomers. Chem Commun (Camb) 2016; 52:6038-59. [PMID: 26996593 PMCID: PMC4846527 DOI: 10.1039/c6cc00617e] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
There is great interest in the development of probe molecules and drug leads that would bind tightly and selectively to protein surfaces that are difficult to target with traditional molecules, such as those involved in protein-protein interactions. The currently available evidence suggests that this will require molecules that are larger and have quite different chemical properties than typical Lipinski-compliant molecules that target enzyme active sites. We describe here efforts to develop vast libraries of conformationally constrained oligomers as a potentially rich source of these molecules.
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Affiliation(s)
- Thomas Kodadek
- Departments of Chemistry and Cancer Biology, The Scripps Research Institute, 130 Scripps Way, Jupiter, FL 33458, USA.
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24
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Li M, Hoeck C, Schoffelen S, Gotfredsen CH, Meldal M. Specific Electrostatic Molecular Recognition in Water. Chemistry 2016; 22:7206-14. [PMID: 27073143 DOI: 10.1002/chem.201600231] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Indexed: 11/11/2022]
Abstract
The identification of pairs of small peptides that recognize each other in water exclusively through electrostatic interactions is reported. The target peptide and a structure-biased combinatorial ligand library consisting of ≈78 125 compounds were synthesized on different sized beads. Peptide-peptide interactions could conveniently be observed by clustering of the small, fluorescently labeled target beads on the surface of larger ligand-containing beads. Sequences of isolated hits were determined by MS/MS. The interactions of the complex showing the highest affinity were investigated by a novel single-bead binding assay and by 2D NMR spectroscopy. Molecular dynamics (MD) studies revealed a putative mode of interaction for this unusual electrostatic binding event. High binding specificity occurred through a combination of topological matching and electrostatic and hydrogen-bond complementarities. From MD simulations binding also seemed to involve three tightly bound water molecules in the interface between the binding partners. Binding constants in the submicromolar range, useful for biomolecular adhesion and in nanostructure design, were measured.
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Affiliation(s)
- Ming Li
- Department of Chemistry, Center for Evolutionary Chemical Biology, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark
| | - Casper Hoeck
- Department of Chemistry, Technical University of Denmark, Building 207, 2800, Kongens Lyngby, Denmark
| | - Sanne Schoffelen
- Department of Chemistry, Center for Evolutionary Chemical Biology, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark
| | - Charlotte H Gotfredsen
- Department of Chemistry, Technical University of Denmark, Building 207, 2800, Kongens Lyngby, Denmark
| | - Morten Meldal
- Department of Chemistry, Center for Evolutionary Chemical Biology, University of Copenhagen, Universitetsparken 5, 2100, Copenhagen, Denmark.
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25
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Zaretsky S, Rai V, Gish G, Forbes MW, Kofler M, Yu JCY, Tan J, Hickey JL, Pawson T, Yudin AK. Twisted amide electrophiles enable cyclic peptide sequencing. Org Biomol Chem 2016; 13:7384-8. [PMID: 26077966 DOI: 10.1039/c5ob01050k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
There is an ever-increasing interest in synthetic methods that not only enable peptide macrocyclization, but also facilitate downstream application of the synthesized molecules. We have found that aziridine amides are stereoelectronically attenuated in a macrocyclic environment such that non-specific interactions with biological nucleophiles are reduced or even shut down. The electrophilic reactivity, revealed at high pH, enables peptide sequencing by mass spectrometry, which will further broaden the utility of aziridine amide-containing libraries of macrocycles.
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Affiliation(s)
- Serge Zaretsky
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON M5S 3H6, Canada.
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26
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Liang X, Vézina-Dawod S, Bédard F, Porte K, Biron E. One-Pot Photochemical Ring-Opening/Cleavage Approach for the Synthesis and Decoding of Cyclic Peptide Libraries. Org Lett 2016; 18:1174-7. [PMID: 26914725 DOI: 10.1021/acs.orglett.6b00296] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A novel dual ring-opening/cleavage strategy to determine the sequence of cyclic peptides from one bead, one compound libraries is described. The approach uses a photolabile residue within the macrocycle and as a linker to allow a simultaneous ring opening and cleavage from the beads upon UV irradiation and provide linearized molecules. Cyclic peptides of five to nine residues were synthesized and the generated linear peptides successfully sequenced by tandem mass spectrometry.
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Affiliation(s)
- Xinxia Liang
- Faculty of Pharmacy, Université Laval , Québec, Québec G1V 0A6, Canada.,Laboratory of Medicinal Chemistry, Centre de recherche du Centre Hospitalier Universitaire de Québec , 2705 Boulevard Laurier, Québec, Québec G1V 4G2, Canada
| | - Simon Vézina-Dawod
- Faculty of Pharmacy, Université Laval , Québec, Québec G1V 0A6, Canada.,Laboratory of Medicinal Chemistry, Centre de recherche du Centre Hospitalier Universitaire de Québec , 2705 Boulevard Laurier, Québec, Québec G1V 4G2, Canada
| | | | - Karine Porte
- Faculty of Pharmacy, Université Laval , Québec, Québec G1V 0A6, Canada.,Laboratory of Medicinal Chemistry, Centre de recherche du Centre Hospitalier Universitaire de Québec , 2705 Boulevard Laurier, Québec, Québec G1V 4G2, Canada
| | - Eric Biron
- Faculty of Pharmacy, Université Laval , Québec, Québec G1V 0A6, Canada.,Laboratory of Medicinal Chemistry, Centre de recherche du Centre Hospitalier Universitaire de Québec , 2705 Boulevard Laurier, Québec, Québec G1V 4G2, Canada
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27
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Knight AS, Zhou EY, Francis MB, Zuckermann RN. Sequence Programmable Peptoid Polymers for Diverse Materials Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:5665-5691. [PMID: 25855478 DOI: 10.1002/adma.201500275] [Citation(s) in RCA: 169] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Revised: 02/13/2015] [Indexed: 06/04/2023]
Abstract
Polymer sequence programmability is required for the diverse structures and complex properties that are achieved by native biological polymers, but efforts towards controlling the sequence of synthetic polymers are, by comparison, still in their infancy. Traditional polymers provide robust and chemically diverse materials, but synthetic control over their monomer sequences is limited. The modular and step-wise synthesis of peptoid polymers, on the other hand, allows for precise control over the monomer sequences, affording opportunities for these chains to fold into well-defined nanostructures. Hundreds of different side chains have been incorporated into peptoid polymers using efficient reaction chemistry, allowing for a seemingly infinite variety of possible synthetically accessible polymer sequences. Combinatorial discovery techniques have allowed the identification of functional polymers within large libraries of peptoids, and newly developed theoretical modeling tools specifically adapted for peptoids enable the future design of polymers with desired functions. Work towards controlling the three-dimensional structure of peptoids, from the conformation of the amide bond to the formation of protein-like tertiary structure, has and will continue to enable the construction of tunable and innovative nanomaterials that bridge the gap between natural and synthetic polymers.
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Affiliation(s)
- Abigail S Knight
- UC Berkeley Chemistry Department, Latimer Hall, Berkeley, CA, 94720, USA
| | - Effie Y Zhou
- UC Berkeley Chemistry Department, Latimer Hall, Berkeley, CA, 94720, USA
| | - Matthew B Francis
- UC Berkeley Chemistry Department, Latimer Hall, Berkeley, CA, 94720, USA
- The Molecular Foundry Lawrence Berkeley National Lab, 1 Cyclotron Road, Berkeley, CA, 94720, USA
| | - Ronald N Zuckermann
- The Molecular Foundry Lawrence Berkeley National Lab, 1 Cyclotron Road, Berkeley, CA, 94720, USA
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28
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Mendes K, Ndungu JM, Clark LF, Kodadek T. Optimization of the Magnetic Recovery of Hits from One-Bead-One-Compound Library Screens. ACS COMBINATORIAL SCIENCE 2015. [PMID: 26221913 DOI: 10.1021/acscombsci.5b00090] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
On-bead screening of one-bead-one-compound (OBOC) libraries is a useful procedure for the identification of protein ligands. An important aspect of this experiment is the method by which beads that bind the target protein are separated from those that do not. Ideally, such a method would be rapid and convenient and result in the isolation of 100% of the "hits" with no false positives (beads that display compounds that are not good ligands for the target). We introduced a technique in which beads that have bound a labeled target protein can be magnetized, thus allowing their convenient isolation ( Astle et al. Chem. Biol. 2010 , 17 , 38 - 45 ). However, recent work in our laboratory and others has shown that magnetic hit recovery can result in the isolation of large numbers of false positives and has also suggested that many true hit beads are missed. In this study, we employ a well-defined model system to examine the efficiency of various magnetic hit isolation protocols. We show that the choice of reagents and the particular operations employed are critical for optimal results.
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Affiliation(s)
- Kimberly Mendes
- Opko Health, Inc., RF Building, Jupiter, Florida 33458, United States
| | - J. M. Ndungu
- Opko Health, Inc., RF Building, Jupiter, Florida 33458, United States
| | - Lorraine F. Clark
- Departments
of Chemistry and Cancer Biology, The Scripps Research Institute, 130
Scripps Way, Jupiter, Florida 33458, United States
| | - Thomas Kodadek
- Departments
of Chemistry and Cancer Biology, The Scripps Research Institute, 130
Scripps Way, Jupiter, Florida 33458, United States
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29
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Gao Y, Kodadek T. Direct comparison of linear and macrocyclic compound libraries as a source of protein ligands. ACS COMBINATORIAL SCIENCE 2015; 17:190-5. [PMID: 25623285 PMCID: PMC4356041 DOI: 10.1021/co500161c] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
![]()
There has been much discussion of
the potential desirability of
macrocyclic molecules for the development of tool compounds and drug
leads. But there is little experimental data comparing otherwise equivalent
macrocyclic and linear compound libraries as a source of protein ligands.
In this Letter, we probe this point in the context of peptoid libraries.
Bead-displayed libraries of macrocyclic and linear peptoids containing
four variable positions and 0–2 fixed residues, to vary the
ring size, were screened against streptavidin and the affinity of
every hit for the target was measured. The data show that macrocyclization
is advantageous, but only when the ring contains 17 atoms, not 20
or 23 atoms. This technology will be useful for conducting direct
comparisons between many different types of chemical libraries to
determine their relative utility as a source of protein ligands.
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Affiliation(s)
- Yu Gao
- Departments of Chemistry
and Cancer Biology, The Scripps Research Institute, 130 Scripps
Way, Jupiter, Florida 33458, United States
| | - Thomas Kodadek
- Departments of Chemistry
and Cancer Biology, The Scripps Research Institute, 130 Scripps
Way, Jupiter, Florida 33458, United States
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30
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Lee KJ, Lim HS. Facile Method To Sequence Cyclic Peptides/Peptoids via One-Pot Ring-Opening/Cleavage Reaction. Org Lett 2014; 16:5710-3. [DOI: 10.1021/ol502788e] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Kang Ju Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea
| | - Hyun-Suk Lim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea
- Department of Biochemistry and Molecular
Biology, Indiana University School of Medicine, Indianapolis, Indiana 46202, United States
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Wu H, Li Y, Bai G, Niu Y, Qiao Q, Tipton JD, Cao C, Cai J. γ-AApeptide-based small-molecule ligands that inhibit Aβ aggregation. Chem Commun (Camb) 2013; 50:5206-8. [PMID: 24158240 DOI: 10.1039/c3cc46685j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We report the design, synthesis, characterization and evaluation of a novel class of γ-AApeptide one-bead-one-compound (OBOC) library, from which a small γ-AApeptide was identified to effectively prevent and disassemble Aβ aggregation.
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Affiliation(s)
- Haifan Wu
- Department of Chemistry, University of South Florida, 4202 E. Fowler Ave, Tampa, FL 33620, USA.
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Giudicessi SL, Gurevich-Messina JM, Martínez-Ceron MC, Erra-Balsells R, Albericio F, Cascone O, Camperi SA. Friendly strategy to prepare encoded one bead-one compound cyclic peptide library. ACS COMBINATORIAL SCIENCE 2013; 15:525-9. [PMID: 23971518 DOI: 10.1021/co400039a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
One bead-one peptide libraries allow the screening of suitable ligands for any target protein. Short cyclic peptides are ideal ligands for affinity chromatography because of their high affinity and selectivity for the target protein and stability against proteases. We designed a library synthesis strategy to facilitate the identification of cyclic peptides by MS consisting of (a) sequential incorporation of a mixture of Fmoc-Ala-OH and Fmoc-Asp[2-phenylisopropyl (OPp)]-OH (15:85) to Gly-oxymethylbenzamide-ChemMatrix (Gly-HMBA-CM) resin, (b) synthesis of the combinatorial library on the resin by the divide-couple-recombine method, (c) removal of OPp with 4% TFA, (d) peptide cyclization on solid phase through side-chain Asp and amino terminus, and (e) removal of side chain protecting groups with a 95% TFA cocktail. Peptides were cleaved from the beads with ammonia and the linear code was sequenced by MALDI-TOF MS/MS. The high capacity of ChemMatrix resin together with the sensitivity of MS allows code sequencing from a single bead.
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Affiliation(s)
- Silvana L. Giudicessi
- Cathedra of Industrial Microbiology and Biotechnology, School of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, (1113) Buenos Aires, Argentina
- National Scientific and Technological Research Council (CONICET), Rivadavia 1917, (1033) Buenos Aires, Argentina
| | - Juan M. Gurevich-Messina
- Cathedra of Industrial Microbiology and Biotechnology, School of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, (1113) Buenos Aires, Argentina
| | - María C. Martínez-Ceron
- Cathedra of Industrial Microbiology and Biotechnology, School of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, (1113) Buenos Aires, Argentina
- National Scientific and Technological Research Council (CONICET), Rivadavia 1917, (1033) Buenos Aires, Argentina
| | - Rosa Erra-Balsells
- National Scientific and Technological Research Council (CONICET), Rivadavia 1917, (1033) Buenos Aires, Argentina
- CIHDECAR-CONICET, Department of Organic Chemistry, School of Exact and Natural Sciences, University of Buenos Aires, (1428) Buenos Aires, Argentina
| | - Fernando Albericio
- Institute for Research in Biomedicine, Baldiri Reixac 10, (08028) Barcelona, Spain
- Department of Organic Chemistry, University of Barcelona, Martí i Franquès 1-11, (08028) Barcelona, Spain
- CIBER-BBN, Networking Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac 10, (08028) Barcelona, Spain
- School of Chemistry and Physics, University of KwaZulu-Natal, University Road Westville 3630, Durban 4001, South Africa
| | - Osvaldo Cascone
- Cathedra of Industrial Microbiology and Biotechnology, School of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, (1113) Buenos Aires, Argentina
- National Scientific and Technological Research Council (CONICET), Rivadavia 1917, (1033) Buenos Aires, Argentina
| | - Silvia A. Camperi
- Cathedra of Industrial Microbiology and Biotechnology, School of Pharmacy and Biochemistry, University of Buenos Aires, Junín 956, (1113) Buenos Aires, Argentina
- National Scientific and Technological Research Council (CONICET), Rivadavia 1917, (1033) Buenos Aires, Argentina
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Liang X, Girard A, Biron E. Practical ring-opening strategy for the sequence determination of cyclic peptides from one-bead-one-compound libraries. ACS COMBINATORIAL SCIENCE 2013; 15:535-40. [PMID: 24016186 DOI: 10.1021/co4000979] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The use of cyclic peptides in one-bead-one-compound libraries is limited by difficulties in sequencing hit compounds. Lacking a free N-terminal amine, such peptides cannot be sequenced by the Edman degradation approach, and complex fragmentation patterns are obtained by tandem mass spectrometry. To overcome this problem, we designed an alternative approach introducing a methionine residue within the macrocycle and as a linker to allow simultaneous ring-opening and release from the resin upon treatment with cyanogen bromide. The methionine linker was inverted relative to the peptide chain to allow the synthesis of cyclic peptides anchored by a lysine side chain and to avoid the presence of two C-terminal homoserine lactones on the released linear peptides. After MALDI-TOF MS/MS analysis, the peptides released from a single bead were sequenced manually and with a de novo sequencing software. The strategy described herein is compatible with commonly used amino acids and allows sequencing of cyclic peptides in one-bead-one-compound libraries, thus reducing the need for encoding.
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Affiliation(s)
- Xinxia Liang
- Faculty of Pharmacy, Université Laval, Pavillon Ferdinand-Vandry, Québec, Québec, G1 V 0A6, Canada
- Laboratory of Medicinal Chemistry, CHU de Québec Research Center (CHUL Section), 2705 Boulevard Laurier, Québec, Québec, G1V 4G2, Canada
| | - Anick Girard
- Faculty of Pharmacy, Université Laval, Pavillon Ferdinand-Vandry, Québec, Québec, G1 V 0A6, Canada
- Laboratory of Medicinal Chemistry, CHU de Québec Research Center (CHUL Section), 2705 Boulevard Laurier, Québec, Québec, G1V 4G2, Canada
| | - Eric Biron
- Faculty of Pharmacy, Université Laval, Pavillon Ferdinand-Vandry, Québec, Québec, G1 V 0A6, Canada
- Laboratory of Medicinal Chemistry, CHU de Québec Research Center (CHUL Section), 2705 Boulevard Laurier, Québec, Québec, G1V 4G2, Canada
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Sarkar M, Pascal BD, Steckler C, Aquino C, Micalizio GC, Kodadek T, Chalmers MJ. Decoding split and pool combinatorial libraries with electron-transfer dissociation tandem mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2013; 24:1026-36. [PMID: 23636859 PMCID: PMC4455952 DOI: 10.1007/s13361-013-0633-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 03/25/2013] [Accepted: 03/28/2013] [Indexed: 05/03/2023]
Abstract
Screening of bead-based split and pool combinatorial chemistry libraries is a powerful approach to aid the discovery of new chemical compounds able to interact with, and modulate the activities of, protein targets of interest. Split and pool synthesis provides for large and well diversified chemical libraries, in this case comprised of oligomers generated from a well-defined starting set. At the end of the synthesis, each bead in the library displays many copies of a unique oligomer sequence. Because the sequence of the oligomer is not known at the time of screening, methods for decoding of the sequence of each screening "hit" are essential. Here we describe an electron-transfer dissociation (ETD) based tandem mass spectrometry approach for the decoding of mass-encoded split and pool libraries. We demonstrate that the newly described "chiral oligomers of pentenoic amides (COPAs)" yield non-sequence-specific product ions upon collisional activated dissociation; however, complete sequence information can be obtained with ETD. To aid in the decoding of libraries from MS and MS/MS data, we have incorporated (79)Br/(81)Br isotope "tags" to differentiate N- and C-terminal product ions. In addition, we have created "Hit-Find," a software program that allows users to generate libraries in silico. The user can then search all possible members of the chemical library for those that fall within a user-defined mass error.
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Affiliation(s)
- Mohosin Sarkar
- Department of Chemistry, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
- Department of Cancer Biology, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
| | - Bruce D. Pascal
- TRI Informatics, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
- Mass Spectrometry and Proteomics, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
| | - Caitlin Steckler
- Mass Spectrometry and Proteomics, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
| | - Claudio Aquino
- Department of Chemistry, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
| | - Glenn C. Micalizio
- Department of Chemistry, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
| | - Thomas Kodadek
- Department of Chemistry, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
- Department of Cancer Biology, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
| | - Michael J. Chalmers
- Mass Spectrometry and Proteomics, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
- Molecular Therapeutics, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, USA
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Cell Penetrating Peptoids (CPPos): Synthesis of a Small Combinatorial Library by Using IRORI MiniKans. Pharmaceuticals (Basel) 2012; 5:1265-81. [PMID: 24281336 PMCID: PMC3816671 DOI: 10.3390/ph5121265] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 11/13/2012] [Accepted: 11/14/2012] [Indexed: 01/10/2023] Open
Abstract
Cell penetrating peptoids (CPPos) are potent mimics of the corresponding cell penetrating peptides (CPPs). The synthesis of diverse oligomeric libraries that display a variety of backbone scaffolds and side-chain appendages are a very promising source of novel CPPos, which can be used to either target different cellular organelles or even different tissues and organs. In this study we established the submonomer-based solid phase synthesis of a “proof of principle” peptoid library in IRORI MiniKans to expand the amount for phenotypic high throughput screens of CPPos. The library consisting of tetrameric peptoids [oligo(N-alkylglycines)] was established on Rink amide resin in a split and mix approach with hydrophilic and hydrophobic peptoid side chains. All CPPos of the presented library were labeled with rhodamine B to allow for the monitoring of cellular uptake by fluorescent confocal microscopy. Eventually, all the purified peptoids were subjected to live cell imaging to screen for CPPos with organelle specificity. While highly charged CPPos enter the cells by endocytosis with subsequent endosomal release, critical levels of lipophilicity allow other CPPos to specifically localize to mitochondria once a certain lipophilicity threshold is reached.
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Bédard F, Girard A, Biron É. A Convenient Approach to Prepare Topologically Segregated Bilayer Beads for One-Bead Two-Compound Combinatorial Peptide Libraries. Int J Pept Res Ther 2012. [DOI: 10.1007/s10989-012-9316-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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