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Abstract
Cell-free protein synthesis (CFPS) has become an established tool for rapid protein synthesis in order to accelerate the discovery of new enzymes and the development of proteins with improved characteristics. Over the past years, progress in CFPS system preparation has been made towards simplification, and many applications have been developed with regard to tailor-made solutions for specific purposes. In this review, various preparation methods of CFPS systems are compared and the significance of individual supplements is assessed. The recent applications of CFPS are summarized and the potential for biocatalyst development discussed. One of the central features is the high-throughput synthesis of protein variants, which enables sophisticated approaches for rapid prototyping of enzymes. These applications demonstrate the contribution of CFPS to enhance enzyme functionalities and the complementation to in vivo protein synthesis. However, there are different issues to be addressed, such as the low predictability of CFPS performance and transferability to in vivo protein synthesis. Nevertheless, the usage of CFPS for high-throughput enzyme screening has been proven to be an efficient method to discover novel biocatalysts and improved enzyme variants.
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Contreras-Llano LE, Tan C. High-throughput screening of biomolecules using cell-free gene expression systems. Synth Biol (Oxf) 2018; 3:ysy012. [PMID: 32995520 PMCID: PMC7445777 DOI: 10.1093/synbio/ysy012] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 05/31/2018] [Accepted: 06/25/2018] [Indexed: 01/13/2023] Open
Abstract
The incorporation of cell-free transcription and translation systems into high-throughput screening applications enables the in situ and on-demand expression of peptides and proteins. Coupled with modern microfluidic technology, the cell-free methods allow the screening, directed evolution and selection of desired biomolecules in minimal volumes within a short timescale. Cell-free high-throughput screening applications are classified broadly into in vitro display and on-chip technologies. In this review, we outline the development of cell-free high-throughput screening methods. We further discuss operating principles and representative applications of each screening method. The cell-free high-throughput screening methods may be advanced by the future development of new cell-free systems, miniaturization approaches, and automation technologies.
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Affiliation(s)
| | - Cheemeng Tan
- Department of Biomedical Engineering, University of California Davis, Davis, CA, USA
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Abstract
INTRODUCTION Cell-free protein microarrays represent a special form of protein microarray which display proteins made fresh at the time of the experiment, avoiding storage and denaturation. They have been used increasingly in basic and translational research over the past decade to study protein-protein interactions, the pathogen-host relationship, post-translational modifications, and antibody biomarkers of different human diseases. Their role in the first blood-based diagnostic test for early stage breast cancer highlights their value in managing human health. Cell-free protein microarrays will continue to evolve to become widespread tools for research and clinical management. Areas covered: We review the advantages and disadvantages of different cell-free protein arrays, with an emphasis on the methods that have been studied in the last five years. We also discuss the applications of each microarray method. Expert commentary: Given the growing roles and impact of cell-free protein microarrays in research and medicine, we discuss: 1) the current technical and practical limitations of cell-free protein microarrays; 2) the biomarker discovery and verification pipeline using protein microarrays; and 3) how cell-free protein microarrays will advance over the next five years, both in their technology and applications.
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Affiliation(s)
- Xiaobo Yu
- a State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences , Beijing Institute of Lifeomics , Beijing , China
| | - Brianne Petritis
- b The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute , Arizona State University , Tempe , AZ , USA
| | - Hu Duan
- a State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences , Beijing Institute of Lifeomics , Beijing , China
| | - Danke Xu
- c State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing , China
| | - Joshua LaBaer
- b The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute , Arizona State University , Tempe , AZ , USA
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Yu X, Song L, Petritis B, Bian X, Wang H, Viloria J, Park J, Bui H, Li H, Wang J, Liu L, Yang L, Duan H, McMurray DN, Achkar JM, Magee M, Qiu J, LaBaer J. Multiplexed Nucleic Acid Programmable Protein Arrays. Theranostics 2017; 7:4057-4070. [PMID: 29109798 PMCID: PMC5667425 DOI: 10.7150/thno.20151] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Accepted: 08/03/2017] [Indexed: 12/13/2022] Open
Abstract
Rationale: Cell-free protein microarrays display naturally-folded proteins based on just-in-time in situ synthesis, and have made important contributions to basic and translational research. However, the risk of spot-to-spot cross-talk from protein diffusion during expression has limited the feature density of these arrays. Methods: In this work, we developed the Multiplexed Nucleic Acid Programmable Protein Array (M-NAPPA), which significantly increases the number of displayed proteins by multiplexing as many as five different gene plasmids within a printed spot. Results: Even when proteins of different sizes were displayed within the same feature, they were readily detected using protein-specific antibodies. Protein-protein interactions and serological antibody assays using human viral proteome microarrays demonstrated that comparable hits were detected by M-NAPPA and non-multiplexed NAPPA arrays. An ultra-high density proteome microarray displaying > 16k proteins on a single microscope slide was produced by combining M-NAPPA with a photolithography-based silicon nano-well platform. Finally, four new tuberculosis-related antigens in guinea pigs vaccinated with Bacillus Calmette-Guerin (BCG) were identified with M-NAPPA and validated with ELISA. Conclusion: All data demonstrate that multiplexing features on a protein microarray offer a cost-effective fabrication approach and have the potential to facilitate high throughput translational research.
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Affiliation(s)
- Xiaobo Yu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (PHOENIX Center, Beijing), Beijing Institute of Radiation Medicine, Beijing, 102206, China
| | - Lusheng Song
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Brianne Petritis
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Xiaofang Bian
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Haoyu Wang
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Jennifer Viloria
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Jin Park
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Hoang Bui
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Han Li
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Jie Wang
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Lei Liu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (PHOENIX Center, Beijing), Beijing Institute of Radiation Medicine, Beijing, 102206, China
| | - Liuhui Yang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (PHOENIX Center, Beijing), Beijing Institute of Radiation Medicine, Beijing, 102206, China
| | - Hu Duan
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (PHOENIX Center, Beijing), Beijing Institute of Radiation Medicine, Beijing, 102206, China
| | - David N. McMurray
- Department of Microbial Pathogenesis and Immunology, College of Medicine, Texas A&M Health Science Center, College Station, TX 77843, USA
| | - Jacqueline M. Achkar
- Department of Medicine, Albert Einstein College of Medicine, NY 10461, USA; Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Mitch Magee
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Ji Qiu
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Joshua LaBaer
- The Virginia G. Piper Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
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Manuel G, Lupták A, Corn RM. A Microwell-Printing Fabrication Strategy for the On-Chip Templated Biosynthesis of Protein Microarrays for Surface Plasmon Resonance Imaging. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2016; 120:20984-20990. [PMID: 28706572 PMCID: PMC5504410 DOI: 10.1021/acs.jpcc.6b03307] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A two-step templated, ribosomal biosynthesis/printing method for the fabrication of protein microarrays for surface plasmon resonance imaging (SPRI) measurements is demonstrated. In the first step, a sixteen component microarray of proteins is created in microwells by cell free on chip protein synthesis; each microwell contains both an in vitro transcription and translation (IVTT) solution and 350 femtomoles of a specific DNA template sequence that together are used to create approximately 40 picomoles of a specific hexahistidine-tagged protein. In the second step, the protein microwell array is used to contact print one or more protein microarrays onto nitrilotriacetic acid (NTA)-functionalized gold thin film SPRI chips for real-time SPRI surface bioaffinity adsorption measurements. Even though each microwell array element only contains approximately 40 picomoles of protein, the concentration is sufficiently high for the efficient bioaffinity adsorption and capture of the approximately 100 femtomoles of hexahistidine-tagged protein required to create each SPRI microarray element. As a first example, the protein biosynthesis process is verified with fluorescence imaging measurements of a microwell array containing His-tagged green fluorescent protein (GFP), yellow fluorescent protein (YFP) and mCherry (RFP), and then the fidelity of SPRI chips printed from this protein microwell array is ascertained by measuring the real-time adsorption of various antibodies specific to these three structurally related proteins. This greatly simplified two-step synthesis/printing fabrication methodology eliminates most of the handling, purification and processing steps normally required in the synthesis of multiple protein probes, and enables the rapid fabrication of SPRI protein microarrays from DNA templates for the study of protein-protein bioaffinity interactions.
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Affiliation(s)
| | - Andrej Lupták
- Corresponding Authors: Robert M. Corn,
, phone: 1-949-824-1746 and Andrej Luptak,
, phone: 1-949-824-9132
| | - Robert M. Corn
- Corresponding Authors: Robert M. Corn,
, phone: 1-949-824-1746 and Andrej Luptak,
, phone: 1-949-824-9132
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Abstract
Autoantibodies are a key component for the diagnosis, prognosis and monitoring of various diseases. In order to discover novel autoantibody targets, highly multiplexed assays based on antigen arrays hold a great potential and provide possibilities to analyze hundreds of body fluid samples for their reactivity pattern against thousands of antigens in parallel. Here, we provide an overview of the available technologies for producing antigen arrays, highlight some of the technical and methodological considerations and discuss their applications as discovery tools. Together with recent studies utilizing antigen arrays, we give an overview on how the different types of antigen arrays have and will continue to deliver novel insights into autoimmune diseases among several others.
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Groll N, Emele F, Poetz O, Rothbauer U. Towards multiplexed protein-protein interaction analysis using protein tag-specific nanobodies. J Proteomics 2015; 127:289-99. [PMID: 25937269 DOI: 10.1016/j.jprot.2015.04.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 03/27/2015] [Accepted: 04/14/2015] [Indexed: 01/28/2023]
Abstract
UNLABELLED Dynamic protein-protein interactions (PPIs) are an integral part of cellular processes. The discovery of modulators that disrupt or stabilize such interactions is highly important to understand PPIs and address correlating diseases. Bead-based protein assays analyzing PPIs between bait- and prey-proteins exemplify emerging methodologies. To date, most studies employ purified bait-proteins from bacteria. Such proteins are of limited use as they do not undergo eukaryotic folding and lack posttranslational modifications. Here, we present a novel method to generate bead-based protein arrays combining μ-scale purification of bait-proteins combined with site-directed immobilization. First, we express individual bait-proteins as GST- or GFP-fusion constructs in bacterial and mammalian cells. Next, we purify and immobilize these bait-proteins from crude lysates using high affinity tag-specific nanobodies coupled to color-coded beads. Finally, we combined those bait-coupled beads in a protein-array for miniaturized multiplexed GST- and GFP pulldown studies. In a proof-of-principle we study dynamic changes of the endogenous prey-protein β-catenin following proteasomal inhibition or signaling pathway perturbation. Our strategy enables a fast isolation of highly pure and stable bait-proteins derived from small-scale expression cultures. We propose that this approach enables the generation of bead-based protein arrays comprising hundreds of bait-proteins from different expression systems to study complex PPIs. BIOLOGICAL SIGNIFICANCE Protein arrays and multiplexed sandwich immunoassays, are widely applied to study protein-protein interaction or to investigate the signaling status of stimulated cells. This study describes for the first time the application of tag-specific nanobodies for site directed immobilization of bait-proteins from different expression systems to generate bead based protein arrays. The analysis of the Wnt-pathway activation by multiplexed μ-scale pulldowns demonstrated the advantages of eukaryotic expression systems regarding the stability and binding properties of individual bait proteins. This article is part of a Special Issue entitled: HUPO 2014.
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Affiliation(s)
- Nicola Groll
- Natural and Medical Sciences Institute at the University of Tuebingen, Reutlingen, Germany
| | - Felix Emele
- Pharmaceutical Biotechnology, Eberhard Karls University, Tuebingen, Germany
| | - Oliver Poetz
- Natural and Medical Sciences Institute at the University of Tuebingen, Reutlingen, Germany.
| | - Ulrich Rothbauer
- Natural and Medical Sciences Institute at the University of Tuebingen, Reutlingen, Germany; Pharmaceutical Biotechnology, Eberhard Karls University, Tuebingen, Germany.
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Díez P, González-González M, Lourido L, Dégano RM, Ibarrola N, Casado-Vela J, LaBaer J, Fuentes M. NAPPA as a Real New Method for Protein Microarray Generation. MICROARRAYS 2015; 4:214-27. [PMID: 27600221 PMCID: PMC4996395 DOI: 10.3390/microarrays4020214] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Revised: 03/30/2015] [Accepted: 04/14/2015] [Indexed: 11/16/2022]
Abstract
Nucleic Acid Programmable Protein Arrays (NAPPA) have emerged as a powerful and innovative technology for the screening of biomarkers and the study of protein-protein interactions, among others possible applications. The principal advantages are the high specificity and sensitivity that this platform offers. Moreover, compared to conventional protein microarrays, NAPPA technology avoids the necessity of protein purification, which is expensive and time-consuming, by substituting expression in situ with an in vitro transcription/translation kit. In summary, NAPPA arrays have been broadly employed in different studies improving knowledge about diseases and responses to treatments. Here, we review the principal advances and applications performed using this platform during the last years.
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Affiliation(s)
- Paula Díez
- Department of Medicine and General Cytometry Service-Nucleus, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), Salamanca 37007, Spain.
- Proteomics Unit, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), Salamanca 37007, Spain.
| | - María González-González
- Department of Medicine and General Cytometry Service-Nucleus, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), Salamanca 37007, Spain.
- Proteomics Unit, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), Salamanca 37007, Spain.
| | - Lucía Lourido
- Rheumatology Division, ProteoRed/ISCIII Proteomics Group, INIBIC, Hospital Universitario de A Coruña, A Coruña 15006, Spain.
| | - Rosa M Dégano
- Proteomics Unit, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), Salamanca 37007, Spain.
| | - Nieves Ibarrola
- Proteomics Unit, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), Salamanca 37007, Spain.
| | - Juan Casado-Vela
- Biotechnology National Centre, Spanish National Research Council (CSIC), Madrid 28049, Spain.
| | - Joshua LaBaer
- Biodesign Institute, Arizona State University, 1001 South McAllister Avenue, Tempe, AZ 85287, USA.
| | - Manuel Fuentes
- Department of Medicine and General Cytometry Service-Nucleus, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), Salamanca 37007, Spain.
- Proteomics Unit, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), Salamanca 37007, Spain.
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Kilb N, Burger J, Roth G. Protein microarray generation by in situ protein expression from template DNA. Eng Life Sci 2014. [DOI: 10.1002/elsc.201300052] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Normann Kilb
- Laboratory for Microarray Copying, Centre for Biological Systems Analysis (ZBSA) University of Freiburg Freiburg Germany
| | - Jürgen Burger
- Laboratory for Microarray Copying, Centre for Biological Systems Analysis (ZBSA) University of Freiburg Freiburg Germany
- Laboratory for MEMS Applications, Department of Microsystems Engineering—IMTEK University of Freiburg Freiburg Germany
| | - Günter Roth
- Laboratory for Microarray Copying, Centre for Biological Systems Analysis (ZBSA) University of Freiburg Freiburg Germany
- BIOSS—Centre for Biological Signalling Studies University of Freiburg Freiburg Germany
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