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Wu CY, Wang DH, Wang X, Dixon SM, Meng L, Ahadi S, Enter DH, Chen CY, Kato J, Leon LJ, Ramirez LM, Maeda Y, Reis CF, Ribeiro B, Weems B, Kung HJ, Lam KS. Rapid Discovery of Functional Small Molecule Ligands against Proteomic Targets through Library-Against-Library Screening. ACS COMBINATORIAL SCIENCE 2016; 18:320-9. [PMID: 27053324 PMCID: PMC4908505 DOI: 10.1021/acscombsci.5b00194] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
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Identifying “druggable”
targets and their corresponding
therapeutic agents are two fundamental challenges in drug discovery
research. The one-bead-one-compound (OBOC) combinatorial library method
has been developed to discover peptides or small molecules that bind
to a specific target protein or elicit a specific cellular response.
The phage display cDNA expression proteome library method has been
employed to identify target proteins that interact with specific compounds.
Here, we combined these two high-throughput approaches, efficiently
interrogated approximately 1013 possible molecular interactions,
and identified 91 small molecule compound beads that interacted strongly
with the phage library. Of 19 compounds resynthesized, 4 were cytotoxic
against cancer cells; one of these compounds was found to interact
with EIF5B and inhibit protein translation. As more binding pairs
are confirmed and evaluated, the “library-against-library”
screening approach and the resulting small molecule–protein
domain interaction database may serve as a valuable tool for basic
research and drug development.
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Affiliation(s)
- Chun-Yi Wu
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
- Pharmacology
and Toxicology Graduate Group, University of California, Davis, Davis, California 95616, United States
| | - Don-Hong Wang
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
- Genetic
Graduate Group, University of California, Davis, California 95616, United States
| | - Xiaobing Wang
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
| | - Seth M. Dixon
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
| | - Liping Meng
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
| | - Sara Ahadi
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
| | - Daniel H. Enter
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
- Center
for Biophotonics Science and Technology, University of California, Davis, Sacramento, California 95817, United States
| | - Chao-Yu Chen
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
- Pharmacology
and Toxicology Graduate Group, University of California, Davis, Davis, California 95616, United States
| | - Jason Kato
- Pharmacology
and Toxicology Graduate Group, University of California, Davis, Davis, California 95616, United States
| | - Leonardo J. Leon
- Pharmacology
and Toxicology Graduate Group, University of California, Davis, Davis, California 95616, United States
| | - Laura M. Ramirez
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
- Center
for Biophotonics Science and Technology, University of California, Davis, Sacramento, California 95817, United States
| | - Yoshiko Maeda
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
| | - Carolina F. Reis
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
| | - Brianna Ribeiro
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
| | - Brittany Weems
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
| | - Hsing-Jien Kung
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
- National Health Research Institutes, Miaoli
County 35053, Taiwan
| | - Kit S. Lam
- Department
of Biochemistry and Molecular Medicine, University of California Davis School of Medicine, 2700 Stockton Boulevard, Suite 2102, Sacramento, California 95817, United States
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Leung NY, Wai CY, Ho MH, Liu R, Lam KS, Wang JJ, Shu SA, Chu KH, Leung PS. Screening and identification of mimotopes of the major shrimp allergen tropomyosin using one-bead-one-compound peptide libraries. Cell Mol Immunol 2015; 14:308-318. [PMID: 26364917 DOI: 10.1038/cmi.2015.83] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 08/06/2015] [Accepted: 08/06/2015] [Indexed: 12/18/2022] Open
Abstract
The one-bead-one-compound (OBOC) combinatorial peptide library is a powerful tool to identify ligand and receptor interactions. Here, we applied the OBOC library technology to identify mimotopes specific to the immunoglobulin E (IgE) epitopes of the major shellfish allergen tropomyosin. OBOC peptide libraries with 8-12 amino acid residues were screened with serum samples from patients with shellfish allergy for IgE mimotopes of tropomyosin. Twenty-five mimotopes were identified from the screening and their binding reactivity to tropomyosin-specific IgE was confirmed by peptide ELISA. These mimotopes could be divided into seven clusters based on sequence homology, and epitope mapping by EpiSearch of the clustered mimotopes was performed to characterize and confirm the validity of mimotopes. Five out of six of the predicted epitopes were found to overlap with previously identified epitopes of tropomyosin. To further confirm the mimicry potential of mimotopes, BALB/c mice were immunized with mimotopes conjugated to keyhole limpet hemocyanin and assayed for their capacity to induce tropomyosin-specific antibodies. BALB/c mice that received mimotope immunization were found to have an elevated level of tropomyosin-specific immunoglobulin G, but not mice that received an irrelevant mimotope. This study pioneers the successful application of the OBOC libraries using whole sera to screen and identify multiple shrimp allergen mimotopes and validates their mimicry potential using in vitro, in vivo, and in silico methods.Cellular & Molecular Immunology advance online publication, 14 september 2015; doi:10.1038/cmi.2015.83.
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Affiliation(s)
- Nicki Yh Leung
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Christine Yy Wai
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Marco Hk Ho
- Department of Pediatrics and Adolescent Medicine, Queen Mary Hospital, The University of Hong Kong, Pokfulam, Hong Kong SAR, China
| | - Ruiwu Liu
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA 95616, USA
| | - Kit S Lam
- Department of Biochemistry and Molecular Medicine, University of California, Davis, CA 95616, USA
| | - Jin Jun Wang
- Division of Rheumatology/Allergy, School of Medicine, University of California, Davis, CA 95616, USA
| | - Shang An Shu
- Division of Rheumatology/Allergy, School of Medicine, University of California, Davis, CA 95616, USA
| | - Ka Hou Chu
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Patrick Sc Leung
- Division of Rheumatology/Allergy, School of Medicine, University of California, Davis, CA 95616, USA
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Cho CF, Behnam Azad B, Luyt LG, Lewis JD. High-throughput screening of one-bead-one-compound peptide libraries using intact cells. ACS COMBINATORIAL SCIENCE 2013; 15:393-400. [PMID: 23819541 DOI: 10.1021/co4000584] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Screening approaches based on one-bead-one-compound (OBOC) combinatorial libraries have facilitated the discovery of novel peptide ligands for cellular targeting in cancer and other diseases. Recognition of cell surface proteins is optimally achieved using live cells, yet screening intact cell populations is time-consuming and inefficient. Here, we evaluate the Complex Object Parametric Analyzer and Sorter (COPAS) large particle biosorter for high-throughput sorting of bead-bound human cell populations. When a library of RGD-containing peptides was screened against human cancer cells that express αvβ3 integrin, it was found that bead-associated cells are rapidly dissociated when sorted through the COPAS instrument. When the bound cells were reversibly cross-linked onto the beads, however, we demonstrated that cell/bead mixtures can be sorted quickly and accurately. This reversible cross-linking approach is compatible with matrix-assisted laser desorption ionization time-of-flight mass spectrometry-based peptide sequence deconvolution. This approach should allow one to rapidly screen an OBOC library and identify novel peptide ligands against cell surface targets in their native conformation.
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Affiliation(s)
- Choi-Fong Cho
- Translational Prostate Cancer
Research Group, University of Alberta,
5-142C Katz Group Building, 114th Street and 87th Avenue, Edmonton,
AB, T6G 2E1 Canada
| | - Babak Behnam Azad
- Departments
of Chemistry, Oncology,
and Medical Imaging, Western University, London, ON, N6A 5C1 Canada
| | - Leonard G. Luyt
- Departments
of Chemistry, Oncology,
and Medical Imaging, Western University, London, ON, N6A 5C1 Canada
| | - John D. Lewis
- Translational Prostate Cancer
Research Group, University of Alberta,
5-142C Katz Group Building, 114th Street and 87th Avenue, Edmonton,
AB, T6G 2E1 Canada
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Martin KS, Soldi C, Candee KN, Wettersten HI, Weiss RH, Shaw JT. From bead to flask: Synthesis of a complex β-amido-amide for probe-development studies. Beilstein J Org Chem 2013; 9:260-4. [PMID: 23400429 PMCID: PMC3566855 DOI: 10.3762/bjoc.9.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Accepted: 01/07/2013] [Indexed: 11/23/2022] Open
Abstract
A concise synthesis of benzimidazole-substituted β-amido-amide LLW62 is presented. The original synthesis of compounds related to LLW62 was developed on Rink resin as part of a “one-bead, one-compound” combinatorial approach for on-bead screening purposes. The current synthesis is carried out in solution and is amenable to scale-up for follow-up studies on LLW62 and investigations of related structures. The key step involves the use of a β-amino acid-forming three-component reaction (3CR), the scope of which defines its role in the synthetic strategy.
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Affiliation(s)
- Kevin S Martin
- Department of Chemistry, University of California, Davis, CA 95616, USA ; Comparative Pathology Graduate Group, University of California, Davis, CA 95616, USA
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Moore KW, Pechen A, Feng XJ, Dominy J, Beltrani VJ, Rabitz H. Why is chemical synthesis and property optimization easier than expected? Phys Chem Chem Phys 2011; 13:10048-70. [PMID: 21483988 DOI: 10.1039/c1cp20353c] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Identifying optimal conditions for chemical and material synthesis as well as optimizing the properties of the products is often much easier than simple reasoning would predict. The potential search space is infinite in principle and enormous in practice, yet optimal molecules, materials, and synthesis conditions for many objectives can often be found by performing a reasonable number of distinct experiments. Considering the goal of chemical synthesis or property identification as optimal control problems provides insight into this good fortune. Both of these goals may be described by a fitness function J that depends on a suitable set of variables (e.g., reactant concentrations, components of a material, processing conditions, etc.). The relationship between J and the variables specifies the fitness landscape for the target objective. Upon making simple physical assumptions, this work demonstrates that the fitness landscape for chemical optimization contains no local sub-optimal maxima that may hinder attainment of the absolute best value of J. This feature provides a basis to explain the many reported efficient optimizations of synthesis conditions and molecular or material properties. We refer to this development as OptiChem theory. The predicted characteristics of chemical fitness landscapes are assessed through a broad examination of the recent literature, which shows ample evidence of trap-free landscapes for many objectives. The fundamental and practical implications of OptiChem theory for chemistry are discussed.
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Affiliation(s)
- Katharine W Moore
- Department of Chemistry, Princeton University, Princeton, NJ 08544, USA
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Righetti PG, Boschetti E, Kravchuk AV, Fasoli E. The proteome buccaneers: how to unearth your treasure chest via combinatorial peptide ligand libraries. Expert Rev Proteomics 2010; 7:373-85. [PMID: 20536309 DOI: 10.1586/epr.10.25] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The latest advances in combinatorial peptide ligand libraries, with their unique performance in discovering low-abundance species in proteomes, are reviewed here. Explanations of mechanism, potential applications, capture of proteomes at different pH values to enhance the total catch and quantitative elutions, such as boiling in the presence of 5% sodium dodecyl sulfate and 3% dithiothreitol are included. The reproducibility of protein capture among different experiments with the same batch of beads or with different batches is also reported to be very high, with coefficient of variations in the order of 10-20%. Miniaturized operations, consisting of capture with as little as 20 or even 5 microl of peptide beads are reported, thus demonstrating that the described technology could be exploited for routine biomarker discovery in a biomedical environment. Finally, it is shown that the signal of captured proteins is linear over approximately three orders of magnitude, ranging from nM to microM, thus ensuring that differential quantitative proteomics for biomarker discovery can be fully implemented, providing species do not saturate their ligands.
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Affiliation(s)
- Pier Giorgio Righetti
- Department of Chemistry, Materials and Chemical Engineering Giulio Natta, Via Mancinelli 7, Politecnico di Milano, Milano, Italy.
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