1
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Matsuo M, Wakui K, Inami Y, Furukawa A, Sato S, Yoshimoto K. Proficiently partitioning of bioactive peptide-ssDNA conjugates by microbead-assisted capillary electrophoresis (MACE). Anal Biochem 2024; 687:115452. [PMID: 38158105 DOI: 10.1016/j.ab.2023.115452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 12/01/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
Low-molecular drug discovery using DNA-encoded chemical library (DEL) is a powerful technology, although improving the partitioning efficiency of affinity ligands from DEL remains a challenge. Here, we assessed the usefulness of microbead-assisted capillary electrophoresis (MACE) for partitioning peptide-oligonucleotide conjugates (POCs), in which high selection pressure is applied because of different mobility of target-modified beads and POCs during CE. Despite their different charge characteristics, all POCs were well separated from the beads. When bead extraction was performed, the tagged DNA amplification was observed only in the couple of a ligand/target, suggesting proficiently specific partitioning of peptide ligands was accomplished using MACE.
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Affiliation(s)
- Muneyuki Matsuo
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan; Graduate School of Integrated Science for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
| | - Koji Wakui
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan
| | - Yuuki Inami
- LinkBIO Co., Ltd., 5270, Terada, Toride, Ibaraki, 302-0021, Japan
| | - Akihiro Furukawa
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58, Hiromachi, Shinagawa, Tokyo, 140-8710, Japan
| | - Seiji Sato
- R&D Division, Daiichi Sankyo Co., Ltd., 1-2-58, Hiromachi, Shinagawa, Tokyo, 140-8710, Japan
| | - Keitaro Yoshimoto
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo, 153-8902, Japan; LinkBIO Co., Ltd., 5270, Terada, Toride, Ibaraki, 302-0021, Japan.
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2
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Huang Y, Li X. Recent Advances on the Selection Methods of DNA-Encoded Libraries. Chembiochem 2021; 22:2384-2397. [PMID: 33891355 DOI: 10.1002/cbic.202100144] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 04/23/2021] [Indexed: 12/15/2022]
Abstract
DNA-encoded libraries (DEL) have come of age and become a major technology platform for ligand discovery in both academia and the pharmaceutical industry. Technological maturation in the past two decades and the recent explosive developments of DEL-compatible chemistries have greatly improved the chemical diversity of DELs and fueled its applications in drug discovery. A relatively less-covered aspect of DELs is the selection method. Typically, DEL selection is considered as a binding assay and the selection is conducted with purified protein targets immobilized on a matrix, and the binders are separated from the non-binding background via physical washes. However, the recent innovations in DEL selection methods have not only expanded the target scope of DELs, but also revealed the potential of the DEL technology as a powerful tool in exploring fundamental biology. In this Review, we first cover the "classic" DEL selection methods with purified proteins on solid phase, and then we discuss the strategies to realize DEL selections in solution phase. Finally, we focus on the emerging approaches for DELs to interrogate complex biological targets.
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Affiliation(s)
- Yiran Huang
- Department of Chemistry and the State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Xiaoyu Li
- Department of Chemistry and the State Key Laboratory of Synthetic Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.,Laboratory for Synthetic Chemistry and Chemical Biology Limited, Health@InnoHK, Innovation and Technology Commission, Units 1503-1511, 15/F., Building 17W, Hong Kong Science and Technology Parks, New Territories, Hong Kong SAR, China
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3
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Li Y, Yu F, Chen S, Zhang N, Wang H, Zhao Q. Immunoassay of Small Molecule Mediated by a Triply Functional DNA. Anal Chem 2021; 93:4794-4799. [DOI: 10.1021/acs.analchem.0c05386] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Yapiao Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fangzhi Yu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shaokun Chen
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ning Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hailin Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
| | - Qiang Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Environment, Hangzhou Institute for Advanced Study, UCAS, Hangzhou 310000, China
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4
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Le ATH, Krylova SM, Krylov SN. Determination of the Equilibrium Constant and Rate Constant of Protein-Oligonucleotide Complex Dissociation under the Conditions of Ideal-Filter Capillary Electrophoresis. Anal Chem 2019; 91:8532-8539. [PMID: 31136154 DOI: 10.1021/acs.analchem.9b01801] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Ideal-filter capillary electrophoresis (IFCE) allows selection of protein binders from oligonucleotide libraries in a single step of partitioning in which protein-bound and unbound oligonucleotides move in the opposite directions. In IFCE, the unbound oligonucleotide does not reach the detector, imposing a problem for finding the equilibrium constant ( Kd) and rate constant ( koff) of protein-oligonucleotide complex dissociation. We report a double-passage approach that allows finding Kd and koff under the IFCE conditions, i.e. near-physiological pH and ionic strength. First, a plug of the protein-oligonucleotide equilibrium mixture passes to the detector in a pressure-driven flow, allowing for both the complex and free oligonucleotide to be detected as a single first peak. Second, the pressure is turned off and the voltage is applied to reverse the migration of only the complex which is detected as the second peak. The experiment is repeated with a lower voltage consequently resulting in longer travel time of the complex to the detector, greater extent of complex dissociation, and the decreased area of the second peak. Finally, the peak areas are used to calculate the values of Kd and koff. Here we explain theoretical and practical aspects of the double-passage approach, prove its validity quantitatively, and, demonstrate its application to determine Kd and koff for an affinity complex between a protein and its DNA aptamer. The double-passage approach for finding Kd and koff of protein-oligonucleotide complexes under the IFCE conditions is a perfect complement for IFCE-based selection of protein binders from oligonucleotide libraries.
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Affiliation(s)
- An T H Le
- Department of Chemistry and Centre for Research on Biomolecular Interactions , York University , Toronto , Ontario M3J 1P3 , Canada
| | - Svetlana M Krylova
- Department of Chemistry and Centre for Research on Biomolecular Interactions , York University , Toronto , Ontario M3J 1P3 , Canada
| | - Sergey N Krylov
- Department of Chemistry and Centre for Research on Biomolecular Interactions , York University , Toronto , Ontario M3J 1P3 , Canada
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5
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Sannino A, Gabriele E, Bigatti M, Mulatto S, Piazzi J, Scheuermann J, Neri D, Donckele EJ, Samain F. Quantitative Assessment of Affinity Selection Performance by Using DNA‐Encoded Chemical Libraries. Chembiochem 2019; 20:955-962. [DOI: 10.1002/cbic.201800766] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Indexed: 12/14/2022]
Affiliation(s)
| | - Elena Gabriele
- Philochem AG Libernstrasse 3 8112 Otelfingen Switzerland
| | | | - Sara Mulatto
- Philochem AG Libernstrasse 3 8112 Otelfingen Switzerland
| | - Jacopo Piazzi
- Philochem AG Libernstrasse 3 8112 Otelfingen Switzerland
| | - Jörg Scheuermann
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH Zürich) Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | - Dario Neri
- Department of Chemistry and Applied BiosciencesSwiss Federal Institute of Technology (ETH Zürich) Vladimir-Prelog-Weg 3 8093 Zürich Switzerland
| | | | - Florent Samain
- Philochem AG Libernstrasse 3 8112 Otelfingen Switzerland
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6
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Fast high-throughput screening of glutathione S-transferase polymorphism by voltage programming-based multi-channel microchip electrophoresis. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1097-1098:10-17. [DOI: 10.1016/j.jchromb.2018.08.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/31/2018] [Accepted: 08/28/2018] [Indexed: 01/05/2023]
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7
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Kochmann S, Le ATH, Hili R, Krylov SN. Predicting efficiency of NECEEM‐based partitioning of protein binders from nonbinders in DNA‐encoded libraries. Electrophoresis 2018; 39:2991-2996. [DOI: 10.1002/elps.201800270] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 07/25/2018] [Accepted: 07/26/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Sven Kochmann
- Department of Chemistry and Centre for Research on Biomolecular InteractionsYork University Toronto Ontario Canada
| | - An T. H. Le
- Department of Chemistry and Centre for Research on Biomolecular InteractionsYork University Toronto Ontario Canada
| | - Ryan Hili
- Department of Chemistry and Centre for Research on Biomolecular InteractionsYork University Toronto Ontario Canada
| | - Sergey N. Krylov
- Department of Chemistry and Centre for Research on Biomolecular InteractionsYork University Toronto Ontario Canada
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8
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Shi B, Deng Y, Zhao P, Li X. Selecting a DNA-Encoded Chemical Library against Non-immobilized Proteins Using a “Ligate–Cross-Link–Purify” Strategy. Bioconjug Chem 2017; 28:2293-2301. [PMID: 28742329 DOI: 10.1021/acs.bioconjchem.7b00343] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Bingbing Shi
- Key
Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, 2199 Lishui Road West, Shenzhen 518055, China
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Yuqing Deng
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Peng Zhao
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
- Institute
of Nuclear Physics and Chemistry, China Academy of Engineering Physics, 64 Mianshan Road, Mianyang, Sichuan 621900, China
| | - Xiaoyu Li
- Department
of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
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9
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Zimmermann G, Li Y, Rieder U, Mattarella M, Neri D, Scheuermann J. Hit-Validation Methodologies for Ligands Isolated from DNA-Encoded Chemical Libraries. Chembiochem 2017; 18:853-857. [PMID: 28067010 DOI: 10.1002/cbic.201600637] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Indexed: 01/13/2023]
Abstract
DNA-encoded chemical libraries (DECLs) are large collections of compounds linked to DNA fragments, serving as amplifiable barcodes, which can be screened on target proteins of interest. In typical DECL selections, preferential binders are identified by high-throughput DNA sequencing, by comparing their frequency before and after the affinity capture step. Hits identified in this procedure need to be confirmed, by resynthesis and by performing affinity measurements. In this article we present new methods based on hybridization of oligonucleotide conjugates with fluorescently labeled complementary oligonucleotides; these facilitate the determination of affinity constants and kinetic dissociation constants. The experimental procedures were demonstrated with acetazolamide, a binder to carbonic anhydrase IX with a dissociation constant in the nanomolar range. The detection of binding events was compatible not only with fluorescence polarization methodologies, but also with Alphascreen technology and with microscale thermophoresis.
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Affiliation(s)
- Gunther Zimmermann
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Yizhou Li
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Ulrike Rieder
- Philochem AG, Libernstrasse 3, 8112, Otelfingen, Switzerland
| | | | - Dario Neri
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
| | - Jörg Scheuermann
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland
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10
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Yuen LH, Franzini RM. Achievements, Challenges, and Opportunities in DNA-Encoded Library Research: An Academic Point of View. Chembiochem 2017; 18:829-836. [DOI: 10.1002/cbic.201600567] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Indexed: 12/19/2022]
Affiliation(s)
- Lik Hang Yuen
- Department of Medicinal Chemistry; University of Utah; 30 S 2000 E Salt Lake City UT 84113 USA
| | - Raphael M. Franzini
- Department of Medicinal Chemistry; University of Utah; 30 S 2000 E Salt Lake City UT 84113 USA
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11
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Abstract
DNA-encoded chemical library technologies are increasingly being adopted in drug discovery for hit and lead generation. DNA-encoded chemistry enables the exploration of chemical spaces four to five orders of magnitude more deeply than is achievable by traditional high-throughput screening methods. Operation of this technology requires developing a range of capabilities including aqueous synthetic chemistry, building block acquisition, oligonucleotide conjugation, large-scale molecular biological transformations, selection methodologies, PCR, sequencing, sequence data analysis and the analysis of large chemistry spaces. This Review provides an overview of the development and applications of DNA-encoded chemistry, highlighting the challenges and future directions for the use of this technology.
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12
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Recent advances on the encoding and selection methods of DNA-encoded chemical library. Bioorg Med Chem Lett 2016; 27:361-369. [PMID: 28011218 DOI: 10.1016/j.bmcl.2016.12.025] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 12/07/2016] [Accepted: 12/08/2016] [Indexed: 11/22/2022]
Abstract
DNA-encoded chemical library (DEL) has emerged as a powerful and versatile tool for ligand discovery in chemical biology research and in drug discovery. Encoding and selection methods are two of the most important technological aspects of DEL that can dictate the performance and utilities of DELs. In this digest, we have summarized recent advances on the encoding and selection strategies of DEL and also discussed the latest developments on DNA-encoded dynamic library, a new frontier in DEL research.
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13
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Beloborodov SS, Panferov VG, Safenkova IV, Krylova SM, Dzantiev BB, Krylov SN. Unexpected Electrophoretic Behavior of Complexes between Rod-like Virions and Bivalent Antibodies. Anal Chem 2016; 88:11908-11912. [PMID: 27934118 DOI: 10.1021/acs.analchem.6b03779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Here we report on the unexpected electrophoretic behavior of complexes between rod-like virus particles (virions) and bivalent antibodies. The multiple complexes formed by the virions and antibodies migrated with electrophoretic mobilities of much greater absolute values than those of the unbound virions or antibodies while typically complexes have mobilities intermediate to those of their components. We hypothesized that the mobilities of unusually high absolute values are caused by the cross-linking of virions by bivalent antibodies into aggregates with prominent side-to-side binding. Theoretically, the mobility of such aggregates should be proportional to the square root of the number of cross-linked virions. The formation of virion aggregates with prominent side-to-side binding was confirmed by atomic force microscopy. The dependence of the aggregate mobility on the number of cross-linked virions can be used to estimate this number.
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Affiliation(s)
- Stanislav S Beloborodov
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University , Toronto, Ontario M3J 1P3, Canada
| | - Vasily G Panferov
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences , Moscow 119071, Russia
| | - Irina V Safenkova
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences , Moscow 119071, Russia
| | - Svetlana M Krylova
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University , Toronto, Ontario M3J 1P3, Canada
| | - Boris B Dzantiev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences , Moscow 119071, Russia
| | - Sergey N Krylov
- Department of Chemistry and Centre for Research on Biomolecular Interactions, York University , Toronto, Ontario M3J 1P3, Canada
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14
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Zimmermann G, Neri D. DNA-encoded chemical libraries: foundations and applications in lead discovery. Drug Discov Today 2016; 21:1828-1834. [PMID: 27477486 DOI: 10.1016/j.drudis.2016.07.013] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 06/17/2016] [Accepted: 07/23/2016] [Indexed: 12/16/2022]
Abstract
DNA-encoded chemical libraries have emerged as a powerful tool for hit identification in the pharmaceutical industry and in academia. Similar to biological display techniques (such as phage display technology), DNA-encoded chemical libraries contain a link between the displayed chemical building block and an amplifiable genetic barcode on DNA. Using routine procedures, libraries containing millions to billions of compounds can be easily produced within a few weeks. The resulting compound libraries are screened in a single test tube against proteins of pharmaceutical interest and hits can be identified by PCR amplification of DNA barcodes and subsequent high-throughput sequencing.
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Affiliation(s)
- Gunther Zimmermann
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich), Vladimir Prelog Weg 1-5/10, CH-8093 Zürich, Switzerland
| | - Dario Neri
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zürich), Vladimir Prelog Weg 1-5/10, CH-8093 Zürich, Switzerland.
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15
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Bao J, Krylova SM, Cherney LT, Hale RL, Belyanskaya SL, Chiu CH, Shaginian A, Arico-Muendel CC, Krylov SN. Predicting Electrophoretic Mobility of Protein–Ligand Complexes for Ligands from DNA-Encoded Libraries of Small Molecules. Anal Chem 2016; 88:5498-506. [DOI: 10.1021/acs.analchem.6b00980] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jiayin Bao
- Department
of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Svetlana M. Krylova
- Department
of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Leonid T. Cherney
- Department
of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Robert L. Hale
- GlaxoSmithKline, 830 Winter Street, Waltham, Massachusetts 02451-8714, United States
| | | | - Cynthia H. Chiu
- GlaxoSmithKline, 830 Winter Street, Waltham, Massachusetts 02451-8714, United States
| | - Alex Shaginian
- GlaxoSmithKline, 830 Winter Street, Waltham, Massachusetts 02451-8714, United States
| | | | - Sergey N. Krylov
- Department
of Chemistry and Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
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16
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Zhong S, Zou D, Zhao B, Zhang D, Li X, Wang H. Electrophoretic behavior of DNA-methyl-CpG-binding domain protein complexes revealed by capillary electrophoreses laser-induced fluorescence. Electrophoresis 2015; 36:3088-93. [DOI: 10.1002/elps.201500336] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 09/03/2015] [Accepted: 09/04/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Shangwei Zhong
- College of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing P. R. China
| | - Dandan Zou
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing P. R. China
| | - Bailin Zhao
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing P. R. China
| | - Dapeng Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing P. R. China
| | - Xiangjun Li
- College of Chemistry and Chemical Engineering; University of Chinese Academy of Sciences; Beijing P. R. China
| | - Hailin Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences; Beijing P. R. China
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17
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Affiliation(s)
- Mykyta V. Chubynsky
- Department of Physics, University of Ottawa, 150 Louis-Pasteur, Ottawa, Ontario K1N 6N5, Canada
| | - Gary W. Slater
- Department of Physics, University of Ottawa, 150 Louis-Pasteur, Ottawa, Ontario K1N 6N5, Canada
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18
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Whitty EG, Maniego AR, Bentwitch SA, Guillaneuf Y, Jones MR, Gaborieau M, Castignolles P. Cellular Response to Linear and Branched Poly(acrylic acid). Macromol Biosci 2015; 15:1724-34. [PMID: 26257305 DOI: 10.1002/mabi.201500153] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 06/29/2015] [Indexed: 12/14/2022]
Abstract
Poly(acrylic acid-co-sodium acrylate) (PNaA) is a pH-responsive polymer with potential in anticancer drug delivery. The cytotoxicity and intracellular effects of 3-arm star, hyperbranched and linear PNaA were investigated with L1210 progenitor leukemia cells and L6 myoblast cells. Free solution capillary electrophoresis demonstrated interactions of PNaA with serum proteins. In a 72 h MTT assay most PNaAs exhibited a IC50 between 7 and 14 mmol L(-1), showing that precipitation may be a sufficient purification for PNaA dilute solutions. Dialyzed 3-arm star and hyperbranched PNaA caused an increase in L6 cell viability, challenging the suitability of MTT as cytotoxicity assay for PNaA. Fluorescent confocal microscopy revealed merging of cellular lipids after exposure to PNaA, likely caused by serum starvation.
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Affiliation(s)
- Elizabeth G Whitty
- University of Western Sydney, Molecular Medicine Research Group, Locked Bag 1797, Penrith, New South Wales, 2751, Australia.,University of Western Sydney, Australian Centre for Research on Separation Science (ACROSS), Locked Bag 1797, Penrith, New South Wales, 2751, Australia.,University of Western Sydney, School of Science and Health, Locked Bag 1797, Penrith, New South Wales, 2751, Australia
| | - Alison R Maniego
- University of Western Sydney, Molecular Medicine Research Group, Locked Bag 1797, Penrith, New South Wales, 2751, Australia.,University of Western Sydney, Australian Centre for Research on Separation Science (ACROSS), Locked Bag 1797, Penrith, New South Wales, 2751, Australia.,University of Western Sydney, School of Science and Health, Locked Bag 1797, Penrith, New South Wales, 2751, Australia
| | - Sharon A Bentwitch
- University of Western Sydney, Molecular Medicine Research Group, Locked Bag 1797, Penrith, New South Wales, 2751, Australia.,University of Western Sydney, Australian Centre for Research on Separation Science (ACROSS), Locked Bag 1797, Penrith, New South Wales, 2751, Australia.,University of Western Sydney, School of Science and Health, Locked Bag 1797, Penrith, New South Wales, 2751, Australia
| | - Yohann Guillaneuf
- CNRS, Institut de Chimie Radicalaire, Aix-Marseille Université, UMR 7273, 13397, Marseille, France
| | - Mark R Jones
- University of Western Sydney, School of Science and Health, Locked Bag 1797, Penrith, New South Wales, 2751, Australia
| | - Marianne Gaborieau
- University of Western Sydney, Molecular Medicine Research Group, Locked Bag 1797, Penrith, New South Wales, 2751, Australia. .,University of Western Sydney, Australian Centre for Research on Separation Science (ACROSS), Locked Bag 1797, Penrith, New South Wales, 2751, Australia. .,University of Western Sydney, School of Science and Health, Locked Bag 1797, Penrith, New South Wales, 2751, Australia.
| | - Patrice Castignolles
- University of Western Sydney, Australian Centre for Research on Separation Science (ACROSS), Locked Bag 1797, Penrith, New South Wales, 2751, Australia.,University of Western Sydney, School of Science and Health, Locked Bag 1797, Penrith, New South Wales, 2751, Australia
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