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Tscheuschner G, Ponader M, Raab C, Weider PS, Hartfiel R, Kaufmann JO, Völzke JL, Bosc-Bierne G, Prinz C, Schwaar T, Andrle P, Bäßler H, Nguyen K, Zhu Y, Mey ASJS, Mostafa A, Bald I, Weller MG. Efficient Purification of Cowpea Chlorotic Mottle Virus by a Novel Peptide Aptamer. Viruses 2023; 15:v15030697. [PMID: 36992405 PMCID: PMC10051510 DOI: 10.3390/v15030697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/31/2023] Open
Abstract
The cowpea chlorotic mottle virus (CCMV) is a plant virus explored as a nanotechnological platform. The robust self-assembly mechanism of its capsid protein allows for drug encapsulation and targeted delivery. Additionally, the capsid nanoparticle can be used as a programmable platform to display different molecular moieties. In view of future applications, efficient production and purification of plant viruses are key steps. In established protocols, the need for ultracentrifugation is a significant limitation due to cost, difficult scalability, and safety issues. In addition, the purity of the final virus isolate often remains unclear. Here, an advanced protocol for the purification of the CCMV from infected plant tissue was developed, focusing on efficiency, economy, and final purity. The protocol involves precipitation with PEG 8000, followed by affinity extraction using a novel peptide aptamer. The efficiency of the protocol was validated using size exclusion chromatography, MALDI-TOF mass spectrometry, reversed-phase HPLC, and sandwich immunoassay. Furthermore, it was demonstrated that the final eluate of the affinity column is of exceptional purity (98.4%) determined by HPLC and detection at 220 nm. The scale-up of our proposed method seems to be straightforward, which opens the way to the large-scale production of such nanomaterials. This highly improved protocol may facilitate the use and implementation of plant viruses as nanotechnological platforms for in vitro and in vivo applications.
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Affiliation(s)
- Georg Tscheuschner
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Marco Ponader
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Christopher Raab
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Prisca S Weider
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Reni Hartfiel
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Jan Ole Kaufmann
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany
- Department of Diagnostic and Interventional Radiology, Technical University of Munich, 81675 Munich, Germany
| | - Jule L Völzke
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Gaby Bosc-Bierne
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Carsten Prinz
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | | | - Paul Andrle
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Henriette Bäßler
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Khoa Nguyen
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
| | - Yanchen Zhu
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, UK
| | - Antonia S J S Mey
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh EH9 3FJ, UK
| | - Amr Mostafa
- Institute of Chemistry-Physical Chemistry, University of Potsdam, 14476 Potsdam, Germany
| | - Ilko Bald
- Institute of Chemistry-Physical Chemistry, University of Potsdam, 14476 Potsdam, Germany
| | - Michael G Weller
- Federal Institute for Materials Research and Testing (BAM), 12489 Berlin, Germany
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Chan SK, Zhao Z, Penziner S, Khong E, Pride D, Schooley RT, Steinmetz NF. Isolation of a Peptide That Binds to Pseudomonas aeruginosa Lytic Bacteriophage. ACS OMEGA 2022; 7:38053-38060. [PMID: 36312416 PMCID: PMC9609082 DOI: 10.1021/acsomega.2c05539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Antimicrobial resistance is a global health threat that is exacerbated by the overuse and misuse of antibiotics in medicine and agriculture. As an alternative to conventional antimicrobial drugs, phage therapy involves the treatment of infected patients with a bacteriophage that naturally destroys bacterial pathogens. With the re-emergence of phage therapy, novel tools are needed to study phages. In this work we set out to screen and isolate peptide candidates that bind to phages and act as affinity tags. Such peptides functionalized with an imaging agent could serves as versatile tools for tracking and imaging of phages. Specifically, we screened a phage display library for peptides that bind to the Good Vibes phage (GV), which lyses the bacterial pathogen Pseudomonas aeruginosa. Isolated monoclonal library phages featured a highly conserved consensus motif, LPPIXRX. The corresponding peptide WDLPPIGRLSGN was synthesized with a GGGSK linker and conjugated to cyanine 5 or biotin. The specific binding of the LPPIXRX motif to GV in vitro was confirmed using an enzyme-linked immunosorbent assay. We demonstrated imaging and tracking of GV in bacterial populations using the fluorescent targeting peptide and flow cytometry. In conclusion, we developed fluorescent labeled peptides that can bind to bacteriophage GV specifically, which may enable real-time analysis of phage in vivo and monitor the efficacy of phage therapy.
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Affiliation(s)
- Soo Khim Chan
- Department
of NanoEngineering, Department of Medicine, Department of Pathology, Department of Bioengineering, Department of Radiology, Center for Nano-ImmunoEngineering, Moores Cancer Center, and Institute for Materials
Discovery and Design, University of California
San Diego, 9500 Gilman Dr., La Jolla, California 92093, United States
| | - Zhongchao Zhao
- Department
of NanoEngineering, Department of Medicine, Department of Pathology, Department of Bioengineering, Department of Radiology, Center for Nano-ImmunoEngineering, Moores Cancer Center, and Institute for Materials
Discovery and Design, University of California
San Diego, 9500 Gilman Dr., La Jolla, California 92093, United States
| | - Samuel Penziner
- Department
of NanoEngineering, Department of Medicine, Department of Pathology, Department of Bioengineering, Department of Radiology, Center for Nano-ImmunoEngineering, Moores Cancer Center, and Institute for Materials
Discovery and Design, University of California
San Diego, 9500 Gilman Dr., La Jolla, California 92093, United States
| | - Ethan Khong
- Department
of NanoEngineering, Department of Medicine, Department of Pathology, Department of Bioengineering, Department of Radiology, Center for Nano-ImmunoEngineering, Moores Cancer Center, and Institute for Materials
Discovery and Design, University of California
San Diego, 9500 Gilman Dr., La Jolla, California 92093, United States
| | - David Pride
- Department
of NanoEngineering, Department of Medicine, Department of Pathology, Department of Bioengineering, Department of Radiology, Center for Nano-ImmunoEngineering, Moores Cancer Center, and Institute for Materials
Discovery and Design, University of California
San Diego, 9500 Gilman Dr., La Jolla, California 92093, United States
| | - Robert T. Schooley
- Department
of NanoEngineering, Department of Medicine, Department of Pathology, Department of Bioengineering, Department of Radiology, Center for Nano-ImmunoEngineering, Moores Cancer Center, and Institute for Materials
Discovery and Design, University of California
San Diego, 9500 Gilman Dr., La Jolla, California 92093, United States
| | - Nicole F. Steinmetz
- Department
of NanoEngineering, Department of Medicine, Department of Pathology, Department of Bioengineering, Department of Radiology, Center for Nano-ImmunoEngineering, Moores Cancer Center, and Institute for Materials
Discovery and Design, University of California
San Diego, 9500 Gilman Dr., La Jolla, California 92093, United States
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Chan SK, Steinmetz NF. Isolation of Tobacco Mosaic Virus-Binding Peptides for Biotechnology Applications. Chembiochem 2022; 23:e202200040. [PMID: 35320626 PMCID: PMC9262120 DOI: 10.1002/cbic.202200040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/17/2022] [Indexed: 11/09/2022]
Abstract
Tobacco mosaic virus (TMV) was the first virus to be discovered and it is now widely used as a tool for biological research and biotechnology applications. TMV particles can be decorated with functional molecules by genetic engineering or bioconjugation. However, this can destabilize the nanoparticles, and/or multiple rounds of modification may be necessary, reducing product yields and preventing the display of certain cargo molecules. To overcome these challenges, we used phage display technology and biopanning to isolate a TMV-binding peptide (TBPT25 ) with strong binding properties (IC50 =0.73 μM, KD =0.16 μM), allowing the display of model cargos via a single mixing step. The TMV-binding peptide is specific for TMV but does not recognize free coat proteins and can therefore be used to decorate intact TMV or detect intact TMV particles in crude plant sap.
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Affiliation(s)
- Soo Khim Chan
- Department of Nanoengineering, University of California San Diego, 9500 Gilman Dr., La Jolla, CA 92093, USA
| | - Nicole F Steinmetz
- Department of NanoEngineering, Department of Bioengineering, Department of Radiology, Center for Nano-ImmunoEngineering, Moores Cancer Center, Institute for Materials Discovery and Design, University of California San Diego, 9500 Gilman Dr., La Jolla, CA 92093, USA
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McFall-Boegeman H, Huang X. Mechanisms of cellular and humoral immunity through the lens of VLP-based vaccines. Expert Rev Vaccines 2022; 21:453-469. [PMID: 35023430 PMCID: PMC8960355 DOI: 10.1080/14760584.2022.2029415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Vaccination can be effective defense against many infectious agents and the corresponding diseases. Discoveries elucidating the mechanisms of the immune system have given hopes to developing vaccines against diseases recalcitrant to current treatment/prevention strategies. One such finding is the ability of immunogenic biological nanoparticles to powerfully boost the immunogenicity of poorer antigens conjugated to them with virus-like particle (VLP)-based vaccines as a key example. VLPs take advantage of the well-defined molecular structures associated with sub-unit vaccines and the immunostimulatory nature of conjugate vaccines. AREAS COVERED In this review, we will discuss how advances in understanding the immune system can inform VLP-based vaccine design and how VLP-based vaccines have uncovered underlying mechanisms in the immune system. EXPERT OPINION As our understanding of mechanisms underlying the immune system increases, that knowledge should inform our vaccine design. Testing of proof-of-concept vaccines in the lab should seek to elucidate the underlying mechanisms of immune responses. The integration of these approaches will allow for VLP-based vaccines to live up to their promise as a powerful plug-and-play platform for next generation vaccine development.
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Affiliation(s)
- Hunter McFall-Boegeman
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA.,Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, Michigan 48824, USA
| | - Xuefei Huang
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA.,Institute for Quantitative Health Science and Engineering, Michigan State University, East Lansing, Michigan 48824, USA.,Department of Biomedical Engineering, Michigan State University, East Lansing, Michigan 48824, USA
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