101
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Stender AS, Marchuk K, Liu C, Sander S, Meyer MW, Smith EA, Neupane B, Wang G, Li J, Cheng JX, Huang B, Fang N. Single cell optical imaging and spectroscopy. Chem Rev 2013; 113:2469-527. [PMID: 23410134 PMCID: PMC3624028 DOI: 10.1021/cr300336e] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Anthony S. Stender
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Kyle Marchuk
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Chang Liu
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Suzanne Sander
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Matthew W. Meyer
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Emily A. Smith
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
| | - Bhanu Neupane
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA
| | - Gufeng Wang
- Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA
| | - Junjie Li
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907
| | - Ji-Xin Cheng
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN 47907
| | - Bo Huang
- Department of Pharmaceutical Chemistry and Department of Biochemistry and Biophysics, University of California, San Francisco, CA 94158
| | - Ning Fang
- Department of Chemistry, Iowa State University and Ames Laboratory, U. S. Department of Energy, Ames, IA 50011, USA
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102
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Shu Y, Lu W, Liu SL, Xu N, Wang L, Zhang L, Zheng ZH, Pang DW, Wang HZ, Zhang ZL. Site-specific labeling of baculovirus in an integrated microfluidic device. LAB ON A CHIP 2013; 13:860-865. [PMID: 23299251 DOI: 10.1039/c2lc41120b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Labeling of viruses can be used to reveal viral infection pathways and screen potential anti-viral drugs. Complex procedures, including virus cultivation, purification and labeling are involved in traditional virus labeling methods. And the manipulation of living virus brings risk to researcher health. In this work, we report a general method for site-specific labeling of the envelope virus in an integrated microfluidic device with simple procedures and high security. Site-specific labeling of virus was achieved by fusing the biotin acceptor peptide (AP-tag) and the biotin ligase enzyme (BirA enzyme) with the envelope protein GP64 of baculovirus. The AP-tag could be modified by BirA enzyme to introduce the biotin moiety onto the viral envelope. Western blots and fluorescence colocalization analysis proved that the baculoviruses were biotinylated and labeled with high efficiency. The integrated device incorporated several operation steps including cell seeding, cell culture, cell transfection, virus culture and virus labeling. Since virus biotinylation was achieved during the process of virus cultivation, the complex procedures of virus labeling were simplified in our device. Furthermore the whole process could be completed in the integrated microfluidic device, and direct contact between viruses and researchers could be eliminated in our method, which could greatly reduce the risk to researcher health during living virus labeling.
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Affiliation(s)
- Yun Shu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P R China
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103
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Li Y, Hong M, Qiu B, Lin Z, Cai Z, Chen Y, Chen G. A highly sensitive chemiluminescent metalloimmunoassay for H1N1 influenza virus detection based on a silver nanoparticle label. Chem Commun (Camb) 2013; 49:10563-5. [DOI: 10.1039/c3cc45329d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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104
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Chen MY, Chen ZZ, Wu LL, Tang HW, Pang DW. Goat anti-rabbit IgG conjugated fluorescent dye-doped silica nanoparticles for human breast carcinoma cell recognition. Analyst 2013; 138:7411-6. [DOI: 10.1039/c3an01654d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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105
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Wang ZG, Liu SL, Tian ZQ, Zhang ZL, Tang HW, Pang DW. Myosin-driven intercellular transportation of wheat germ agglutinin mediated by membrane nanotubes between human lung cancer cells. ACS NANO 2012; 6:10033-10041. [PMID: 23102457 DOI: 10.1021/nn303729r] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Membrane nanotubes can facilitate direct intercellular communication between cells and provide a unique channel for intercellular transfer of cellular contents. However, the transport mechanisms of membrane nanotubes remain poorly understood between cancer cells. Also largely unknown is the transport pattern mediated by membrane nanotubes. In this work, wheat germ agglutinin (WGA), a widely used drug carrier and potential antineoplastic drug, was labeled with quantum dots (QDs-WGA) as a model for exploring the intercellular transportation via membrane nanotubes. We found that membrane nanotubes allowed effective transfer of QDs-WGA. Long-term single-particle tracking indicated that the movements of QDs-WGA exhibited a slow and directed motion pattern in nanotubes. Significantly, the transport of QDs-WGA was driven by myosin molecular motors in an active and unidirectional manner. These results contribute to a better understanding of cell-to-cell communication for cancer research.
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Affiliation(s)
- Zhi-Gang Wang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, and Wuhan Institute of Biotechnology, Wuhan University, Wuhan 430072, PR China
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106
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High-efficiency dual labeling of influenza virus for single-virus imaging. Biomaterials 2012; 33:7828-33. [DOI: 10.1016/j.biomaterials.2012.07.026] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2012] [Accepted: 07/11/2012] [Indexed: 11/23/2022]
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107
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Cai L, Chen ZZ, Chen MY, Tang HW, Pang DW. MUC-1 aptamer-conjugated dye-doped silica nanoparticles for MCF-7 cells detection. Biomaterials 2012; 34:371-81. [PMID: 23084552 DOI: 10.1016/j.biomaterials.2012.09.084] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 09/30/2012] [Indexed: 11/25/2022]
Abstract
In this work, we have prepared three types of aptamer-conjugated Rubpy-doped silica nanoparticles for Human breast carcinoma MCF-7 cells labeling. Probe A is prepared through covalent conjugation between amine-labeled MUC-1 aptamer and carboxyl-modified Rubpy-doped NPs (NPs-aptamer). Probe B is prepared based on the interaction between biotin-labeled MUC-1 aptamer and avidin-conjugated Rubpy-doped NPs (NPs-avidin-biotin-aptamer). For Probe C, there is a PEG with flexible long chain as the bridge between avidin and the NPs (NPs-PEG-avidin-biotin-aptamer). In addition, we further investigate the practical number of MUC-1 aptamers on an NP of each probe using hoechst33258 dye. The binding efficiency of MUC-1 aptamer on the three types of probes as follows: Probe A < Probe B < Probe C. In addition, microscopic fluorescence imaging shows that Probe C containing the PEG molecules can be effectively applied for the recognition of MUC-1 protein in human breast carcinoma MCF-7 cells thus demonstrates that the PEG with flexible long chain as the bridge between the aptamer and NP can greatly enhances the freedom of MUC-1 aptamer. Compared with common organic dyes, the dye-doped silica nanoparticles serve as a stable bioprobe because of their facile conjugation with the desirable biomolecules, and have exhibited great potential in bioanalysis.
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Affiliation(s)
- Li Cai
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, PR China
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108
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Hao J, Huang LL, Zhang R, Wang HZ, Xie HY. A mild and reliable method to label enveloped virus with quantum dots by copper-free click chemistry. Anal Chem 2012; 84:8364-70. [PMID: 22946933 DOI: 10.1021/ac301918t] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Real-time tracking of the dynamic process of virus invasion is crucial to understanding the infection mechanism. For successful tracking, efficient labeling methods are indispensable. In this paper, we report a mild and reliable method for labeling viruses, especially with regard to easily disabled enveloped viruses. The copper-free click chemistry has been used to label enveloped viruses with quantum dots (QDs) by linking virions modified with azide to the QDs derived with dibenzocyclooctynes (DBCO). Both vaccinia virus (VACV) and avian influenza A virus (H9N2) can be specifically and rapidly labeled under mild conditions, with a labeling efficiency of more than 80%. The labeled virions were of intact infectivity, and their fluorescence was strong enough to realize single-virion tracking. Compared to previously reported methods, our method is less destructive, reliable, and universal, without specific requirements for the type and structure of viruses to be labeled, which has laid the foundation for long-term dynamic visualization of virus infection process.
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Affiliation(s)
- Jian Hao
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
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109
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Entry of influenza A Virus with a α2,6-linked sialic acid binding preference requires host fibronectin. J Virol 2012; 86:10704-13. [PMID: 22837202 DOI: 10.1128/jvi.01166-12] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The receptor binding specificity of influenza A virus is one of the major determinants of viral tropism and host specificity. In general, avian viral hemagglutinin prefers to bind to α2,3-linked sialic acid, whereas the human viral hemagglutinin prefers to bind to α2,6-linked sialic acid. Here, we demonstrate that host fibronectin protein plays an important role in the life cycle of some influenza A viruses. Treating cells with anti-fibronectin antibodies or fibronectin-specific small interfering RNA can inhibit the virus replication of human H1N1 influenza A viruses. Strikingly, these inhibitory effects cannot be observed in cells infected with H5N1 viruses. By using reverse genetics techniques, we observed that the receptor binding specificity, but not the origin of the hemagglutinin subtype, is responsible for this differential inhibitory effect. Changing the binding preference of hemagglutinin from α2,6-linked sialic acid to α2,3-linked sialic acid can make the virus resistant to the anti-fibronectin antibody treatment and vice versa. Our further characterizations indicate that anti-fibronectin antibody acts on the early phase of viral replication cycle, but it has no effect on the initial binding of influenza A virus to cell surface. Our subsequent investigations further show that anti-fibronectin antibody can block the postattachment entry of influenza virus. Overall, these results indicate that the sialic acid binding preference of influenza viral hemagglutinin can modulate the preferences of viral entry pathways, suggesting that there are subtle differences between the virus entries of human and avian influenza viruses.
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110
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Hamilton BS, Whittaker GR, Daniel S. Influenza virus-mediated membrane fusion: determinants of hemagglutinin fusogenic activity and experimental approaches for assessing virus fusion. Viruses 2012; 4:1144-68. [PMID: 22852045 PMCID: PMC3407899 DOI: 10.3390/v4071144] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2012] [Revised: 07/11/2012] [Accepted: 07/17/2012] [Indexed: 12/15/2022] Open
Abstract
Hemagglutinin (HA) is the viral protein that facilitates the entry of influenza viruses into host cells. This protein controls two critical aspects of entry: virus binding and membrane fusion. In order for HA to carry out these functions, it must first undergo a priming step, proteolytic cleavage, which renders it fusion competent. Membrane fusion commences from inside the endosome after a drop in lumenal pH and an ensuing conformational change in HA that leads to the hemifusion of the outer membrane leaflets of the virus and endosome, the formation of a stalk between them, followed by pore formation. Thus, the fusion machinery is an excellent target for antiviral compounds, especially those that target the conserved stem region of the protein. However, traditional ensemble fusion assays provide a somewhat limited ability to directly quantify fusion partly due to the inherent averaging of individual fusion events resulting from experimental constraints. Inspired by the gains achieved by single molecule experiments and analysis of stochastic events, recently-developed individual virion imaging techniques and analysis of single fusion events has provided critical information about individual virion behavior, discriminated intermediate fusion steps within a single virion, and allowed the study of the overall population dynamics without the loss of discrete, individual information. In this article, we first start by reviewing the determinants of HA fusogenic activity and the viral entry process, highlight some open questions, and then describe the experimental approaches for assaying fusion that will be useful in developing the most effective therapies in the future.
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Affiliation(s)
- Brian S. Hamilton
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA;
| | - Gary R. Whittaker
- Department of Microbiology and Immunology, Cornell University, Ithaca, NY 14853, USA;
| | - Susan Daniel
- School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY 14853, USA;
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111
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Zhang P, Liu S, Gao D, Hu D, Gong P, Sheng Z, Deng J, Ma Y, Cai L. Click-Functionalized Compact Quantum Dots Protected by Multidentate-Imidazole Ligands: Conjugation-Ready Nanotags for Living-Virus Labeling and Imaging. J Am Chem Soc 2012; 134:8388-91. [DOI: 10.1021/ja302367s] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Pengfei Zhang
- CAS Key
Laboratory of Health Informatics, Institute
of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Shuhui Liu
- CAS Key
Laboratory of Health Informatics, Institute
of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Duyang Gao
- CAS Key
Laboratory of Health Informatics, Institute
of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Dehong Hu
- CAS Key
Laboratory of Health Informatics, Institute
of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Ping Gong
- CAS Key
Laboratory of Health Informatics, Institute
of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Zonghai Sheng
- CAS Key
Laboratory of Health Informatics, Institute
of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Jizhe Deng
- CAS Key
Laboratory of Health Informatics, Institute
of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Yifan Ma
- CAS Key
Laboratory of Health Informatics, Institute
of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Lintao Cai
- CAS Key
Laboratory of Health Informatics, Institute
of Biomedicine and Biotechnology, Shenzhen Institutes of Advanced
Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
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112
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Nakabayashi J. A compartmentalization model of hepatitis C virus replication: an appropriate distribution of HCV RNA for the effective replication. J Theor Biol 2012; 300:110-7. [PMID: 22286015 DOI: 10.1016/j.jtbi.2012.01.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2011] [Revised: 01/10/2012] [Accepted: 01/11/2012] [Indexed: 01/28/2023]
Abstract
Hepatitis C virus (HCV) infection is a major cause of liver disease. Ten to twenty percent of chronic hepatitis C will develop complications of chronic liver diseases such as liver cirrhosis and hepatocellular carcinoma. The culture system of HCV is established by the specific combination between HCV strain and a host cell. Some chimeras substituting core to NS2 into the analogous region of JFH1 strain fail to effectively replicate. Core to NS2 of HCV gene mainly encodes the structural protein of HCV virion and contributes to the virion assembly, while other regions mainly contribute to the genome replication. The balance between the virion assembly and the genome replication of chimera may differ from that of reference strain. We construct a mathematical model of the whole replication process of HCV in single infected cell. It is revealed by this model that there are two replication patterns of HCV, explosive and arrested replication. In the explosive replication, HCV can continue to exponentially reproduce its progeny. The explosive replication is caused by the effect of the positive feedback in the replication cycle. On the other hand, in the arrested replication, the replication is stalled after sufficiently long time has passed from the infection because of the depletion of the genome RNA of HCV. To avoid the arrest of replication, HCV RNA must be appropriately distributed to three distinct functions as a template for the genome replication, as a template for the translation of viral proteins and as a component of the viral particle. When the genome replication and the translation of viral proteins precede to the virion assembly, HCV can effectively replicate by explosive replication. It is suggested that some chimeras of HCV fail to effectively replicate because of the inappropriate distribution of HCV RNA to these functions.
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Affiliation(s)
- Jun Nakabayashi
- Department of Mathematical Informatics, Faculty of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo, Japan.
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