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Wang H, Yang Y, Xu Y, Chen Y, Zhang W, Liu T, Chen G, Wang K. Phage-based delivery systems: engineering, applications, and challenges in nanomedicines. J Nanobiotechnology 2024; 22:365. [PMID: 38918839 PMCID: PMC11197292 DOI: 10.1186/s12951-024-02576-4] [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: 02/28/2024] [Accepted: 05/21/2024] [Indexed: 06/27/2024] Open
Abstract
Bacteriophages (phages) represent a unique category of viruses with a remarkable ability to selectively infect host bacteria, characterized by their assembly from proteins and nucleic acids. Leveraging their exceptional biological properties and modifiable characteristics, phages emerge as innovative, safe, and efficient delivery vectors. The potential drawbacks associated with conventional nanocarriers in the realms of drug and gene delivery include a lack of cell-specific targeting, cytotoxicity, and diminished in vivo transfection efficiency. In contrast, engineered phages, when employed as cargo delivery vectors, hold the promise to surmount these limitations and attain enhanced delivery efficacy. This review comprehensively outlines current strategies for the engineering of phages, delineates the principal types of phages utilized as nanocarriers in drug and gene delivery, and explores the application of phage-based delivery systems in disease therapy. Additionally, an incisive analysis is provided, critically examining the challenges confronted by phage-based delivery systems within the domain of nanotechnology. The primary objective of this article is to furnish a theoretical reference that contributes to the reasoned design and development of potent phage-based delivery systems.
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Affiliation(s)
- Hui Wang
- School of Pharmacy, Nantong University, Nantong, 226001, China
- Qingdao Central Hospital, University of Health and Rehabilitation Sciences (Qingdao Central Medical Group), Qingdao, 266024, China
- School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, 266024, China
| | - Ying Yang
- School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Yan Xu
- School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Yi Chen
- School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Wenjie Zhang
- School of Pharmacy, Nantong University, Nantong, 226001, China
| | - Tianqing Liu
- NICM Health Research Institute, Western Sydney University, Sydney, NSW, 2145, Australia.
| | - Gang Chen
- Qingdao Central Hospital, University of Health and Rehabilitation Sciences (Qingdao Central Medical Group), Qingdao, 266024, China.
- School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao, 266024, China.
| | - Kaikai Wang
- School of Pharmacy, Nantong University, Nantong, 226001, China.
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2
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Wang R, Li HD, Cao Y, Wang ZY, Yang T, Wang JH. M13 phage: a versatile building block for a highly specific analysis platform. Anal Bioanal Chem 2023:10.1007/s00216-023-04606-w. [PMID: 36867197 PMCID: PMC9982796 DOI: 10.1007/s00216-023-04606-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 02/02/2023] [Accepted: 02/06/2023] [Indexed: 03/04/2023]
Abstract
Viruses are changing the biosensing and biomedicine landscape due to their multivalency, orthogonal reactivities, and responsiveness to genetic modifications. As the most extensively studied phage model for constructing a phage display library, M13 phage has received much research attention as building blocks or viral scaffolds for various applications including isolation/separation, sensing/probing, and in vivo imaging. Through genetic engineering and chemical modification, M13 phages can be functionalized into a multifunctional analysis platform with various functional regions conducting their functionality without mutual disturbance. Its unique filamentous morphology and flexibility also promoted the analytical performance in terms of target affinity and signal amplification. In this review, we mainly focused on the application of M13 phage in the analytical field and the benefit it brings. We also introduced several genetic engineering and chemical modification approaches for endowing M13 with various functionalities, and summarized some representative applications using M13 phages to construct isolation sorbents, biosensors, cell imaging probes, and immunoassays. Finally, current issues and challenges remaining in this field were discussed and future perspectives were also proposed.
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Affiliation(s)
- Rui Wang
- grid.412252.20000 0004 0368 6968Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819 China
| | - Hui-Da Li
- grid.412252.20000 0004 0368 6968Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819 China
| | - Ying Cao
- grid.412252.20000 0004 0368 6968Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819 China
| | - Zi-Yi Wang
- grid.412252.20000 0004 0368 6968Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819 China
| | - Ting Yang
- Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China.
| | - Jian-Hua Wang
- grid.412252.20000 0004 0368 6968Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Box 332, Shenyang, 110819 China
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3
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M13 Bacteriophage-Based Bio-nano Systems for Bioapplication. BIOCHIP JOURNAL 2022. [DOI: 10.1007/s13206-022-00069-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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4
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Ren H, Yang P, Yu H. Recent Progress in Azopyridine-Containing Supramolecular Assembly: From Photoresponsive Liquid Crystals to Light-Driven Devices. Molecules 2022; 27:molecules27133977. [PMID: 35807219 PMCID: PMC9268027 DOI: 10.3390/molecules27133977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/16/2022] [Accepted: 06/18/2022] [Indexed: 02/05/2023] Open
Abstract
Azobenzene derivatives have become one of the most famous photoresponsive chromophores in the past few decades for their reversible molecular switches upon the irradiation of actinic light. To meet the ever-increasing requirements for applications in materials science, biomedicine, and light-driven devices, it is usually necessary to adjust their photochemical property from the molecular level by changing the substituents on the benzene rings of azobenzene groups. Among the diverse azobenzene derivatives, azopyridine combines the photoresponsive feature of azobenzene groups and the supramolecular function of pyridyl moieties in one molecule. This unique feature provides pH-responsiveness and hydrogen/halogen/coordination binding sites in the same chromophore, paving a new way to prepare multi-functional responsive materials through non-covalent interactions and reversible chemical reactions. This review summarizes the photochemical and photophysical properties of azopyridine derivatives in supramolecular states (e.g., hydrogen/halogen bonding, coordination interactions, and quaternization reactions) and illustrates their applications from photoresponsive liquid crystals to light-driven devices. We hope this review can highlight azopyridine as one more versatile candidate molecule for designing novel photoresponsive materials towards light-driven applications.
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Affiliation(s)
- Hao Ren
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China;
| | - Peng Yang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi’an 710119, China;
- Correspondence: (P.Y.); (H.Y.)
| | - Haifeng Yu
- Institute of New Structural Materials, School of Material Science and Engineering, Peking University, Beijing 100871, China
- Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China
- Correspondence: (P.Y.); (H.Y.)
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5
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Lin S, Liu C, Han X, Zhong H, Cheng C. Viral Nanoparticle System: An Effective Platform for Photodynamic Therapy. Int J Mol Sci 2021; 22:ijms22041728. [PMID: 33572365 PMCID: PMC7916136 DOI: 10.3390/ijms22041728] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/29/2021] [Accepted: 01/29/2021] [Indexed: 12/12/2022] Open
Abstract
Photodynamic therapy (PDT) is a promising therapy due to its efficiency and accuracy. The photosensitizer is delivered to the target lesion and locally activated. Viral nanoparticles (VNPs) have been explored as delivery vehicles for PDT in recent years because of their favorable properties, including simple manufacture and good safety profile. They have great potential as drug delivery carriers in medicine. Here, we review the development of PDT photosensitizers and discuss applications of VNP-mediated photodynamic therapies and the performance of VNPs in the treatment of tumor cells and antimicrobial therapy. Furthermore, future perspectives are discussed for further developing novel viral nanocarriers or improving existing viral vectors.
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Affiliation(s)
| | - Chun Liu
- Correspondence: (C.L.); (X.H.); (C.C.); Tel.: +86-591-8372-5260 (C.C.)
| | - Xiao Han
- Correspondence: (C.L.); (X.H.); (C.C.); Tel.: +86-591-8372-5260 (C.C.)
| | | | - Cui Cheng
- Correspondence: (C.L.); (X.H.); (C.C.); Tel.: +86-591-8372-5260 (C.C.)
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6
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Siriwardane DA, Kulikov O, Batchelor BL, Liu Z, Cue JM, Nielsen SO, Novak BM. UV- and Thermo-Controllable Azobenzene-Decorated Polycarbodiimide Molecular Springs. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00679] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Dumindika A. Siriwardane
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Oleg Kulikov
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, United States
| | - Benjamin L. Batchelor
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Zhiwei Liu
- Department of Chemistry and Biochemistry, University of the Sciences, 600 South 43rd Street, Philadelphia, Pennsylvania 19104, United States
| | - John Michael Cue
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Steven O. Nielsen
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Bruce M. Novak
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080, United States
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7
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Sawada T, Serizawa T. Filamentous Viruses as Building Blocks for Hierarchical Self-Assembly toward Functional Soft Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2018. [DOI: 10.1246/bcsj.20170428] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Toshiki Sawada
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-H121 Ookayama, Meguro-ku, Tokyo 152-8550
- Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency, 4-17 Honcho, Kawaguchi, Saitama 332-0012
| | - Takeshi Serizawa
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1-H121 Ookayama, Meguro-ku, Tokyo 152-8550
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8
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Cao B, Xu H, Yang M, Mao C. Virus-Based Cancer Therapeutics for Targeted Photodynamic Therapy. Methods Mol Biol 2018; 1776:643-652. [PMID: 29869271 DOI: 10.1007/978-1-4939-7808-3_41] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cancer photodynamic therapy (PDT) involves the absorption of light by photosensitizers (PSs) to generate cytotoxic singlet oxygen for killing cancer cells. The success of this method is usually limited by the lack of selective accumulation of the PS at cancer cells. Bioengineered viruses with cancer cell-targeting peptides fused on their surfaces are great drug carriers that can guide the PS to cancer cells for targeted cancer treatment. Here, we use cell-targeting fd bacteriophages (phages) as an example to describe how to chemically conjugate PSs (e.g., pyropheophorbide-a (PPa)) onto a phage particle to achieve targeted PDT.
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Affiliation(s)
- Binrui Cao
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, Institute for Biomedical Engineering, Science and Technology, University of Oklahoma, Norman, OK, USA
| | - Hong Xu
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, Institute for Biomedical Engineering, Science and Technology, University of Oklahoma, Norman, OK, USA
| | - Mingying Yang
- Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, Hangzhou, China
| | - Chuanbin Mao
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, Institute for Biomedical Engineering, Science and Technology, University of Oklahoma, Norman, OK, USA. .,School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, China.
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9
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Sunderland KS, Yang M, Mao C. Phage-Enabled Nanomedicine: From Probes to Therapeutics in Precision Medicine. Angew Chem Int Ed Engl 2017; 56:1964-1992. [PMID: 27491926 PMCID: PMC5311110 DOI: 10.1002/anie.201606181] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Indexed: 01/08/2023]
Abstract
Both lytic and temperate bacteriophages (phages) can be applied in nanomedicine, in particular, as nanoprobes for precise disease diagnosis and nanotherapeutics for targeted disease treatment. Since phages are bacteria-specific viruses, they do not naturally infect eukaryotic cells and are not toxic to them. They can be genetically engineered to target nanoparticles, cells, tissues, and organs, and can also be modified with functional abiotic nanomaterials for disease diagnosis and treatment. This Review will summarize the current use of phage structures in many aspects of precision nanomedicine, including ultrasensitive biomarker detection, enhanced bioimaging for disease diagnosis, targeted drug and gene delivery, directed stem cell differentiation, accelerated tissue formation, effective vaccination, and nanotherapeutics for targeted disease treatment. We will also propose future directions in the area of phage-based nanomedicines, and discuss the state of phage-based clinical trials.
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Affiliation(s)
- Kegan S Sunderland
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma, 73019, USA
| | - Mingying Yang
- Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang, 310058, China
| | - Chuanbin Mao
- Department of Chemistry and Biochemistry, Stephenson Life Sciences Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma, 73019, USA
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
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10
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Sunderland KS, Yang M, Mao C. Nanomedizin auf Phagenbasis: von Sonden zu Therapeutika für eine Präzisionsmedizin. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201606181] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Kegan S. Sunderland
- Department of Chemistry and Biochemistry Stephenson Life Sciences Research Center University of Oklahoma 101 Stephenson Parkway Norman Oklahoma 73019 USA
| | - Mingying Yang
- Institute of Applied Bioresource Research College of Animal Science Zhejiang University Yuhangtang Road 866 Hangzhou Zhejiang 310058 China
| | - Chuanbin Mao
- Department of Chemistry and Biochemistry Stephenson Life Sciences Research Center University of Oklahoma 101 Stephenson Parkway Norman Oklahoma 73019 USA
- School of Materials Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
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11
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Weineisen NL, Hommersom CA, Voskuhl J, Sankaran S, Depauw AMA, Katsonis N, Jonkheijm P, Cornelissen JJLM. Photoresponsive, reversible immobilization of virus particles on supramolecular platforms. Chem Commun (Camb) 2017; 53:1896-1899. [DOI: 10.1039/c6cc09576c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Covalently attached azobenzene moieties to cowpea chlorotic mottle virus (CCMV) allow for photoresponsive immobilization on cucurbit[8]uril bearing surfaces.
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Affiliation(s)
- N. L. Weineisen
- Laboratory for Biomolecular Nanotechnology
- MESA+ Institute for Nanotechnology, University of Twente
- 7500 AE Enschede
- The Netherlands
| | - C. A. Hommersom
- Laboratory for Biomolecular Nanotechnology
- MESA+ Institute for Nanotechnology, University of Twente
- 7500 AE Enschede
- The Netherlands
| | - J. Voskuhl
- Laboratory for Molecular nanoFabrication
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
| | - S. Sankaran
- Laboratory for Molecular nanoFabrication
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
| | - A. M. A. Depauw
- Laboratory for Biomolecular Nanotechnology
- MESA+ Institute for Nanotechnology, University of Twente
- 7500 AE Enschede
- The Netherlands
| | - N. Katsonis
- Laboratory for Biomolecular Nanotechnology
- MESA+ Institute for Nanotechnology, University of Twente
- 7500 AE Enschede
- The Netherlands
| | - P. Jonkheijm
- Laboratory for Molecular nanoFabrication
- MESA+ Institute for Nanotechnology
- University of Twente
- 7500 AE Enschede
- The Netherlands
| | - J. J. L. M. Cornelissen
- Laboratory for Biomolecular Nanotechnology
- MESA+ Institute for Nanotechnology, University of Twente
- 7500 AE Enschede
- The Netherlands
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12
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O'Sullivan L, Buttimer C, McAuliffe O, Bolton D, Coffey A. Bacteriophage-based tools: recent advances and novel applications. F1000Res 2016; 5:2782. [PMID: 27990274 PMCID: PMC5133683 DOI: 10.12688/f1000research.9705.1] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/21/2016] [Indexed: 01/21/2023] Open
Abstract
Bacteriophages (phages) are viruses that infect bacterial hosts, and since their discovery over a century ago they have been primarily exploited to control bacterial populations and to serve as tools in molecular biology. In this commentary, we highlight recent diverse advances in the field of phage research, going beyond bacterial control using whole phage, to areas including biocontrol using phage-derived enzybiotics, diagnostics, drug discovery, novel drug delivery systems and bionanotechnology.
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Affiliation(s)
- Lisa O'Sullivan
- Department of Biological Sciences, Cork Institute of Technology, County Cork, Ireland
| | - Colin Buttimer
- Department of Biological Sciences, Cork Institute of Technology, County Cork, Ireland
| | - Olivia McAuliffe
- Biotechnology Department, Teagasc, Moorepark Food Research Centre, Fermoy, County Cork, Ireland
| | - Declan Bolton
- Division of Food Safety, Teagasc, Food Research Centre, Ashtown, County Dublin, Ireland
| | - Aidan Coffey
- Department of Biological Sciences, Cork Institute of Technology, County Cork, Ireland
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13
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Urquhart T, Daub E, Honek JF. Bioorthogonal Modification of the Major Sheath Protein of Bacteriophage M13: Extending the Versatility of Bionanomaterial Scaffolds. Bioconjug Chem 2016; 27:2276-2280. [PMID: 27626459 DOI: 10.1021/acs.bioconjchem.6b00460] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
With a mass of ∼1.6 × 107 Daltons and composed of approximately 2700 proteins, bacteriophage M13 has been employed as a molecular scaffold in bionanomaterials fabrication. In order to extend the versatility of M13 in this area, residue-specific unnatural amino acid incorporation was employed to successfully display azide functionalities on specific solvent-exposed positions of the pVIII major sheath protein of this bacteriophage. Employing a combination of engineered mutants of the gene coding for the pVIII protein, the methionine (Met) analog, l-azidohomoalanine (Aha), and a suitable Escherichia coli Met auxotroph for phage production, conditions were developed to produce M13 bacteriophage labeled with over 350 active azides (estimated by fluorescent dye labeling utilizing a strain-promoted azide-alkyne cycloaddition) and capable of azide-selective attachment to 5 nm gold nanoparticles as visualized by transmission electron microscopy. The capability of this system to undergo dual labeling utilizing both chemical acylation and bioorthogonal cycloaddition reactions was also verified. The above stratagem should prove particularly advantageous in the preparation of assemblies of larger and more complex molecular architectures based on the M13 building block.
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Affiliation(s)
- Taylor Urquhart
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , 200 University Avenue, Waterloo, Ontario, Canada N2L 3G1
| | - Elisabeth Daub
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , 200 University Avenue, Waterloo, Ontario, Canada N2L 3G1
| | - John Frank Honek
- Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo , 200 University Avenue, Waterloo, Ontario, Canada N2L 3G1
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14
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Pires DP, Cleto S, Sillankorva S, Azeredo J, Lu TK. Genetically Engineered Phages: a Review of Advances over the Last Decade. Microbiol Mol Biol Rev 2016; 80:523-43. [PMID: 27250768 PMCID: PMC4981678 DOI: 10.1128/mmbr.00069-15] [Citation(s) in RCA: 238] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Soon after their discovery in the early 20th century, bacteriophages were recognized to have great potential as antimicrobial agents, a potential that has yet to be fully realized. The nascent field of phage therapy was adversely affected by inadequately controlled trials and the discovery of antibiotics. Although the study of phages as anti-infective agents slowed, phages played an important role in the development of molecular biology. In recent years, the increase in multidrug-resistant bacteria has renewed interest in the use of phages as antimicrobial agents. With the wide array of possibilities offered by genetic engineering, these bacterial viruses are being modified to precisely control and detect bacteria and to serve as new sources of antibacterials. In applications that go beyond their antimicrobial activity, phages are also being developed as vehicles for drug delivery and vaccines, as well as for the assembly of new materials. This review highlights advances in techniques used to engineer phages for all of these purposes and discusses existing challenges and opportunities for future work.
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Affiliation(s)
- Diana P Pires
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Sara Cleto
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
| | - Sanna Sillankorva
- Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Joana Azeredo
- Centre of Biological Engineering, University of Minho, Braga, Portugal
| | - Timothy K Lu
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
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15
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Cao B, Yang M, Mao C. Phage as a Genetically Modifiable Supramacromolecule in Chemistry, Materials and Medicine. Acc Chem Res 2016; 49:1111-20. [PMID: 27153341 DOI: 10.1021/acs.accounts.5b00557] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Filamentous bacteriophage (phage) is a genetically modifiable supramacromolecule. It can be pictured as a semiflexible nanofiber (∼900 nm long and ∼8 nm wide) made of a DNA core and a protein shell with the former genetically encoding the latter. Although phage bioengineering and phage display techniques were developed before the 1990s, these techniques have not been widely used for chemistry, materials, and biomedical research from the perspective of supramolecular chemistry until recently. Powered by our expertise in displaying a foreign peptide on its surface through engineering phage DNA, we have employed phage to identify target-specific peptides, construct novel organic-inorganic nanohybrids, develop biomaterials for disease treatment, and generate bioanalytical methods for disease diagnosis. Compared with conventional biomimetic chemistry, phage-based supramolecular chemistry represents a new frontier in chemistry, materials science, and medicine. In this Account, we introduce our recent successful efforts in phage-based supramolecular chemistry, by integrating the unique nanofiber-like phage structure and powerful peptide display techniques into the fields of chemistry, materials science, and medicine: (1) successfully synthesized and assembled silica, hydroxyapatite, and gold nanoparticles using phage templates to form novel functional materials; (2) chemically introduced azo units onto the phage to form photoresponsive functional azo-phage nanofibers via a diazotization reaction between aromatic amino groups and the tyrosine residues genetically displayed on phage surfaces; (3) assembled phage into 2D films for studying the effects of both biochemical (the peptide sequences displayed on the phages) and biophysical (the topographies of the phage films) cues on the proliferation and differentiation of mesenchymal stem cells (MSCs) and induced pluripotent stem cells (iPSCs) and identified peptides and topographies that can induce their osteogenic differentiation; (4) discovered that phage could induce angiogenesis and osteogenesis for MSC-based vascularized bone regeneration; (5) identified novel breast cancer cell-targeting and MSC-targeting peptides and used them to significantly improve the efficiency of targeted cancer therapy and MSC-based gene delivery, respectively; (6) employed engineered phage as a probe to achieve ultrasensitive detection of biomarkers from serum of human patients for disease diagnosis; and (7) constructed centimeter-scale 3D multilayered phage assemblies with the potential application as scaffolds for bone regeneration and functional device fabrication. Our findings demonstrated that phage is indeed a very powerful supramacromolecule suitable for not only developing novel nanostructures and biomaterials but also advancing important fields in biomedicine, including molecular targeting, cancer diagnosis and treatment, drug and gene delivery, stem cell fate direction, and tissue regeneration. Our successes in exploiting phage in chemistry, materials, and medicine suggest that phage itself is nontoxic at the cell level and can be safely used for detecting biomarkers in vitro. Moreover, although we have demonstrated successful in vivo tissue regeneration induced by phage, we believe future studies are needed to evaluate the in vivo biodistribution and potential risks of the phage-based biomaterials.
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Affiliation(s)
- Binrui Cao
- Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
| | - Mingying Yang
- Institute
of Applied Bioresource Research, College of Animal Science, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang 310058, China
| | - Chuanbin Mao
- Department of Chemistry & Biochemistry, Stephenson Life Science Research Center, University of Oklahoma, 101 Stephenson Parkway, Norman, Oklahoma 73019, United States
- School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
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16
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Abstract
Long fascinating to biologists, viruses offer nanometer-scale benchtops for building molecular-scale devices and materials. Viruses tolerate a wide range of chemical modifications including reaction conditions, pH values, and temperatures. Recent examples of nongenetic manipulation of viral surfaces have extended viruses into applications ranging from biomedical imaging, drug delivery, tissue regeneration, and biosensors to materials for catalysis and energy generation. Chemical reactions on the phage surface include both covalent and noncovalent modifications, including some applied in conjunction with genetic modifications. Here, we survey viruses chemically augmented with capabilities limited only by imagination.
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Affiliation(s)
- Kritika Mohan
- Department of Chemistry and ‡Department of
Molecular Biology and Biochemistry, University of California, Irvine, California 92697, United States
| | - Gregory A. Weiss
- Department of Chemistry and ‡Department of
Molecular Biology and Biochemistry, University of California, Irvine, California 92697, United States
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17
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Lobo DP, Wemyss AM, Smith DJ, Straube A, Betteridge KB, Salmon AHJ, Foster RR, Elhegni HE, Satchell SC, Little HA, Pacheco-Gómez R, Simmons MJ, Hicks MR, Bates DO, Rodger A, Dafforn TR, Arkill KP. Direct detection and measurement of wall shear stress using a filamentous bio-nanoparticle. NANO RESEARCH 2015; 8:3307-3315. [PMID: 27570611 PMCID: PMC4996322 DOI: 10.1007/s12274-015-0831-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 06/04/2015] [Accepted: 06/08/2015] [Indexed: 05/24/2023]
Abstract
The wall shear stress (WSS) that a moving fluid exerts on a surface affects many processes including those relating to vascular function. WSS plays an important role in normal physiology (e.g. angiogenesis) and affects the microvasculature's primary function of molecular transport. Points of fluctuating WSS show abnormalities in a number of diseases; however, there is no established technique for measuring WSS directly in physiological systems. All current methods rely on estimates obtained from measured velocity gradients in bulk flow data. In this work, we report a nanosensor that can directly measure WSS in microfluidic chambers with sub-micron spatial resolution by using a specific type of virus, the bacteriophage M13, which has been fluorescently labeled and anchored to a surface. It is demonstrated that the nanosensor can be calibrated and adapted for biological tissue, revealing WSS in micro-domains of cells that cannot be calculated accurately from bulk flow measurements. This method lends itself to a platform applicable to many applications in biology and microfluidics.
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Affiliation(s)
- Daniela P Lobo
- Department of Chemistry and Warwick Analytical Science Centre, University of Warwick, Coventry CV4 7AL, UK
| | - Alan M Wemyss
- Department of Chemistry and Warwick Analytical Science Centre, University of Warwick, Coventry CV4 7AL, UK; MOAC Doctoral Training Centre, University of Warwick, Coventry CV4 7AL, UK
| | - David J Smith
- Mathematics, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, UK
| | - Anne Straube
- Centre for Mechanochemical Cell Biology, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK
| | - Kai B Betteridge
- Physiology and Pharmacology, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Andrew H J Salmon
- Physiology and Pharmacology, University of Bristol, University Walk, Bristol BS8 1TD, UK
| | - Rebecca R Foster
- Clinical Sciences, Whitson Street, University of Bristol, Bristol BS1 3NY, UK
| | - Hesham E Elhegni
- Clinical Sciences, Whitson Street, University of Bristol, Bristol BS1 3NY, UK
| | - Simon C Satchell
- Clinical Sciences, Whitson Street, University of Bristol, Bristol BS1 3NY, UK
| | - Haydn A Little
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, UK
| | - Raúl Pacheco-Gómez
- Biosciences, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, UK
| | - Mark J Simmons
- Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, UK
| | - Matthew R Hicks
- Biosciences, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, UK
| | - David O Bates
- School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham NG2 7UH, UK
| | - Alison Rodger
- Department of Chemistry and Warwick Analytical Science Centre, University of Warwick, Coventry CV4 7AL, UK
| | - Timothy R Dafforn
- Biosciences, University of Birmingham, Edgbaston, Birmingham, West Midlands B15 2TT, UK
| | - Kenton P Arkill
- Biochemistry, University of Bristol, University Walk, Bristol BS8 1TD, UK
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18
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Henry KA, Arbabi-Ghahroudi M, Scott JK. Beyond phage display: non-traditional applications of the filamentous bacteriophage as a vaccine carrier, therapeutic biologic, and bioconjugation scaffold. Front Microbiol 2015; 6:755. [PMID: 26300850 PMCID: PMC4523942 DOI: 10.3389/fmicb.2015.00755] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 07/10/2015] [Indexed: 12/23/2022] Open
Abstract
For the past 25 years, phage display technology has been an invaluable tool for studies of protein-protein interactions. However, the inherent biological, biochemical, and biophysical properties of filamentous bacteriophage, as well as the ease of its genetic manipulation, also make it an attractive platform outside the traditional phage display canon. This review will focus on the unique properties of the filamentous bacteriophage and highlight its diverse applications in current research. Particular emphases are placed on: (i) the advantages of the phage as a vaccine carrier, including its high immunogenicity, relative antigenic simplicity and ability to activate a range of immune responses, (ii) the phage's potential as a prophylactic and therapeutic agent for infectious and chronic diseases, (iii) the regularity of the virion major coat protein lattice, which enables a variety of bioconjugation and surface chemistry applications, particularly in nanomaterials, and (iv) the phage's large population sizes and fast generation times, which make it an excellent model system for directed protein evolution. Despite their ubiquity in the biosphere, metagenomics work is just beginning to explore the ecology of filamentous and non-filamentous phage, and their role in the evolution of bacterial populations. Thus, the filamentous phage represents a robust, inexpensive, and versatile microorganism whose bioengineering applications continue to expand in new directions, although its limitations in some spheres impose obstacles to its widespread adoption and use.
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Affiliation(s)
- Kevin A. Henry
- Human Health Therapeutics Portfolio, National Research Council Canada, OttawaON, Canada
| | - Mehdi Arbabi-Ghahroudi
- Human Health Therapeutics Portfolio, National Research Council Canada, OttawaON, Canada
- School of Environmental Sciences, University of Guelph, GuelphON, Canada
- Department of Biology, Carleton University, OttawaON, Canada
| | - Jamie K. Scott
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BCCanada
- Faculty of Health Sciences, Simon Fraser University, BurnabyBC, Canada
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19
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Vilona D, Di Lorenzo R, Carraro M, Licini G, Trainotti L, Bonchio M. Viral nano-hybrids for innovative energy conversion and storage schemes. J Mater Chem B 2015; 3:6718-6730. [PMID: 32262464 DOI: 10.1039/c5tb00924c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Typical rod-like viruses (the Tobacco Mosaic Virus (TMV) and the Bacteriophage M13) are biological nanostructures that couple a 1D mono-dispersed morphology with a precisely defined topology of surface spaced and orthogonal reactive domains. These biogenic scaffolds offer a unique alternative to synthetic nano-platforms for the assembly of functional molecules and materials. Spatially resolved 1D arrays of inorganic-organic hybrid domains can thus be obtained on viral nano-templates resulting in the functional arrangement of photo-triggers and catalytic sites with applications in light energy conversion and storage. Different synthetic strategies are herein highlighted depending on the building blocks and with a particular emphasis on the molecular design of viral-templated nano-interfaces holding great potential for the dream-goal of artificial photosynthesis.
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Affiliation(s)
- D Vilona
- CNR-ITM and Department of Chemical Sciences, University of Padova, via F. Marzolo 1, 35131 Padova, Italy.
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20
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Ma S, Wang D, Liang Y, Sun B, Gorb SN, Zhou F. Gecko-inspired but chemically switched friction and adhesion on nanofibrillar surfaces. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2015; 11:1131-1137. [PMID: 25331382 DOI: 10.1002/smll.201402484] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 09/09/2014] [Indexed: 06/04/2023]
Abstract
Chemically switched friction nano-fibrillar surfaces (SiNWAs-PSPMA & SiNWAs-PMAA arrays) can be constructed by finely decorating ordered Si nanowire arrays with responsive polymer brushes. As expected, these surfaces sense humidity or pH smartly and show reversible friction switching, based on swelling and shrinking of the polymer brushes, which is successfully monitored by AFM in liquid media.
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Affiliation(s)
- Shuanhong Ma
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China; University of the Chinese Academy of Sciences, Beijing, 100049, China
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21
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Putri RM, Cornelissen JJLM, Koay MST. Self-Assembled Cage-Like Protein Structures. Chemphyschem 2015; 16:911-8. [DOI: 10.1002/cphc.201402722] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Indexed: 12/20/2022]
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22
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Chung WJ, Lee DY, Yoo SY. Chemical modulation of M13 bacteriophage and its functional opportunities for nanomedicine. Int J Nanomedicine 2014; 9:5825-36. [PMID: 25540583 PMCID: PMC4270384 DOI: 10.2147/ijn.s73883] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
M13 bacteriophage (phage) has emerged as an attractive bionanomaterial owing to its genetically tunable surface chemistry and its potential to self-assemble into hierarchical structures. Furthermore, because of its unique nanoscopic structure, phage has been proposed as a model system in soft condensed physics and as a biomimetic building block for structured functional materials. Genetic engineering of phage provides great opportunities to develop novel nanomaterials with functional surface peptide motifs; however, this biological approach is generally limited to peptides containing the 20 natural amino acids. To extend the scope of phage applications, strategies involving chemical modification have been employed to incorporate a wider range of functional groups, including synthetic chemical compounds. In this review, we introduce the design of chemoselective phage functionalization and discuss how such a strategy is combined with genetic engineering for a variety of medical applications, as reported in recent literature.
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Affiliation(s)
- Woo-Jae Chung
- College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Doe-Young Lee
- College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - So Young Yoo
- BIO-IT Foundry Technology Institute, Pusan National University, Busan, Republic of Korea ; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
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23
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Zhang J, Ma D, Du D, Xi Z, Yi L. An efficient reagent for covalent introduction of alkynes into proteins. Org Biomol Chem 2014; 12:9528-31. [DOI: 10.1039/c4ob01873g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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24
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Wang J, Yang M, Zhu Y, Wang L, Tomsia AP, Mao C. Phage nanofibers induce vascularized osteogenesis in 3D printed bone scaffolds. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:4961-4966. [PMID: 24711251 PMCID: PMC4122615 DOI: 10.1002/adma.201400154] [Citation(s) in RCA: 163] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2014] [Revised: 02/11/2014] [Indexed: 05/12/2023]
Abstract
A virus-activated matrix is developed to overcome the challenge of forming vascularized bone tissue. It is generated by filling a 3D printed bioceramic scaffold with phage nanofibers displaying high-density RGD peptide. After it is seeded with mesenchymal stem cells (MSCs) and implanted into a bone defect, the phage nanofibers induce osteogenesis and angiogenesis by activating endothelialization and osteogenic differentiation of MSCs.
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Affiliation(s)
- Jianglin Wang
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, Norman, OK 73019, USA
| | - Mingying Yang
- Institute of Applied Bioresource Research, College of Animal Science, Zhejiang University, Yuhangtang Road 866, Hangzhou, Zhejiang 310058, China
| | - Ye Zhu
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, Norman, OK 73019, USA
| | - Lin Wang
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, Norman, OK 73019, USA
| | - Antoni P. Tomsia
- Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Chuanbin Mao
- Department of Chemistry and Biochemistry, University of Oklahoma, Stephenson Life Sciences Research Center, Norman, OK 73019, USA
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25
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Damian V, Resmerita E, Stoica I, Ibanescu C, Sacarescu L, Rocha L, Hurduc N. Surface relief gratings induced by pulsed laser irradiation in low glass-transition temperature azopolysiloxanes. J Appl Polym Sci 2014. [DOI: 10.1002/app.41015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Victor Damian
- National Institute for Laser, Plasma, and Radiation Physics; 409 Atomistilor Street Bucharest-Magurele Romania
| | - Elena Resmerita
- Department of Natural and Synthetic Polymers; Gheorghe Asachi Technical University of Iasi; 73 Professor Dimitrie Mangeron Street 700050 Iasi Romania
| | - Iuliana Stoica
- Petru Poni Institute of Macromolecular Chemistry, 41A Aleea Grigore Ghica Voda; 700487 Iasi Romania
| | - Constanta Ibanescu
- Department of Natural and Synthetic Polymers; Gheorghe Asachi Technical University of Iasi; 73 Professor Dimitrie Mangeron Street 700050 Iasi Romania
| | - Liviu Sacarescu
- Petru Poni Institute of Macromolecular Chemistry, 41A Aleea Grigore Ghica Voda; 700487 Iasi Romania
| | - Licinio Rocha
- Commission for Atomic Energy and Alternative Energies (CEA), Institute for Smart Digital Systems Saclay (LIST) Saclay, Laboratoire Capteurs et Architectures Électroniques; F-91191 Gif-sur-Yvette Cedex France
| | - Nicolae Hurduc
- Department of Natural and Synthetic Polymers; Gheorghe Asachi Technical University of Iasi; 73 Professor Dimitrie Mangeron Street 700050 Iasi Romania
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26
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Bryksin AV, Brown AC, Baksh MM, Finn M, Barker TH. Learning from nature - novel synthetic biology approaches for biomaterial design. Acta Biomater 2014; 10:1761-9. [PMID: 24463066 DOI: 10.1016/j.actbio.2014.01.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/16/2014] [Accepted: 01/16/2014] [Indexed: 10/25/2022]
Abstract
Many biomaterials constructed today are complex chemical structures that incorporate biologically active components derived from nature, but the field can still be said to be in its infancy. The need for materials that bring sophisticated properties of structure, dynamics and function to medical and non-medical applications will only grow. Increasing appreciation of the functionality of biological systems has caused biomaterials researchers to consider nature for design inspiration, and many examples exist of the use of biomolecular motifs. Yet evolution, nature's only engine for the creation of new designs, has been largely ignored by the biomaterials community. Molecular evolution is an emerging tool that enables one to apply nature's engineering principles to non-natural situations using variation and selection. The purpose of this review is to highlight the most recent advances in the use of molecular evolution in synthetic biology applications for biomaterial engineering, and to discuss some of the areas in which this approach may be successfully applied in the future.
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27
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Marvin DA, Symmons MF, Straus SK. Structure and assembly of filamentous bacteriophages. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2014; 114:80-122. [PMID: 24582831 DOI: 10.1016/j.pbiomolbio.2014.02.003] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2013] [Accepted: 02/09/2014] [Indexed: 12/24/2022]
Abstract
Filamentous bacteriophages are interesting paradigms in structural molecular biology, in part because of the unusual mechanism of filamentous phage assembly. During assembly, several thousand copies of an intracellular DNA-binding protein bind to each copy of the replicating phage DNA, and are then displaced by membrane-spanning phage coat proteins as the nascent phage is extruded through the bacterial plasma membrane. This complicated process takes place without killing the host bacterium. The bacteriophage is a semi-flexible worm-like nucleoprotein filament. The virion comprises a tube of several thousand identical major coat protein subunits around a core of single-stranded circular DNA. Each protein subunit is a polymer of about 50 amino-acid residues, largely arranged in an α-helix. The subunits assemble into a helical sheath, with each subunit oriented at a small angle to the virion axis and interdigitated with neighbouring subunits. A few copies of "minor" phage proteins necessary for infection and/or extrusion of the virion are located at each end of the completed virion. Here we review both the structure of the virion and aspects of its function, such as the way the virion enters the host, multiplies, and exits to prey on further hosts. In particular we focus on our understanding of the way the components of the virion come together during assembly at the membrane. We try to follow a basic rule of empirical science, that one should chose the simplest theoretical explanation for experiments, but be prepared to modify or even abandon this explanation as new experiments add more detail.
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Affiliation(s)
- D A Marvin
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, UK.
| | - M F Symmons
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, UK
| | - S K Straus
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T 1Z1, Canada.
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28
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Selvakumar R, Seethalakshmi N, Thavamani P, Naidu R, Megharaj M. Recent advances in the synthesis of inorganic nano/microstructures using microbial biotemplates and their applications. RSC Adv 2014. [DOI: 10.1039/c4ra07903e] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Microbial biotemplates for synthesizing inorganic nanostructures of defined morphology and size.
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Affiliation(s)
- R. Selvakumar
- Nanobiotechnology Laboratory
- PSG Institute of Advanced Studies
- Coimbatore 641004, India
| | - N. Seethalakshmi
- Nanobiotechnology Laboratory
- PSG Institute of Advanced Studies
- Coimbatore 641004, India
| | - P. Thavamani
- Centre for Environmental Risk Assessment and Remediation (CERAR)
- University of South Australia
- Adelaide 5095, Australia
| | - Ravi Naidu
- Centre for Environmental Risk Assessment and Remediation (CERAR)
- University of South Australia
- Adelaide 5095, Australia
| | - Mallavarapu Megharaj
- Centre for Environmental Risk Assessment and Remediation (CERAR)
- University of South Australia
- Adelaide 5095, Australia
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