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Ma Y, Cui Z, He Z, Li W, Zhang Z, Zhang X, Zhang XE, Tan T. Delaying Photobleaching of a Light-Switch Complex for Real-Time Imaging of Single Viral Particle Uncoating. Anal Chem 2016; 88:10675-10679. [DOI: 10.1021/acs.analchem.6b03127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yingxin Ma
- Beijing Key Lab
of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
- State Key Laboratory
of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, People’s Republic of China
| | - Zongqiang Cui
- State Key Laboratory
of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, People’s Republic of China
| | - Zhike He
- Key Laboratory
of Analytical Chemistry for Biology and Medicine, Ministry of Education,
College of Chemistry and Sciences, Wuhan University, Wuhan, Hubei 430072, People’s Republic of China
| | - Wei Li
- State Key Laboratory
of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, People’s Republic of China
| | - Zhiping Zhang
- State Key Laboratory
of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, People’s Republic of China
| | - Xiaowei Zhang
- State Key Laboratory
of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, People’s Republic of China
| | - Xian-En Zhang
- National
Laboratory
of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China
| | - Tianwei Tan
- Beijing Key Lab
of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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Ma Y, He Z, Tan T, Li W, Zhang Z, Song S, Zhang X, Hu Q, Zhou P, Wu Y, Zhang XE, Cui Z. Real-Time Imaging of Single HIV-1 Disassembly with Multicolor Viral Particles. ACS NANO 2016; 10:6273-82. [PMID: 27253587 DOI: 10.1021/acsnano.6b02462] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Viral disassembly is poorly understood and related to the infection mechanism. However, directly observing the process in living cells remains technically challenging. In this study, the genome RNA, capsid, and matrix protein of the HIV-1 virus were labeled with a Ru(II) complex ([Ru(phen)2(dppz)](2+)), the TC-FlAsH/ReAsH system, and EGFP/ECFP, respectively. Using the multicolored virus and single-particle imaging, we were able to track the sequential disassembly process of single HIV-1 virus particles in live host cells. Approximately 0.1% of viral particles were observed to undergo a sequential disassembly process at 60-120 min post infection. The timing and efficiency of the disassembly were influenced by the cellular factor CypA and reverse transcription. The findings facilitate a better understanding of the processes governing the HIV-1 lifecycle. The multicolor labeling protocol developed in this study may find many applications involving virus-host-cell interactions.
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Affiliation(s)
- Yingxin Ma
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences , Wuhan 430071, PR China
- Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology , Beijing 100029, PR China
| | - Zhike He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Sciences, Wuhan University , Wuhan 430072, PR China
| | - Tianwei Tan
- Beijing Key Lab of Bioprocess, College of Life Science and Technology, Beijing University of Chemical Technology , Beijing 100029, PR China
| | - Wei Li
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences , Wuhan 430071, PR China
| | - Zhiping Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences , Wuhan 430071, PR China
| | - Shuang Song
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences , Wuhan 430071, PR China
| | - Xiaowei Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences , Wuhan 430071, PR China
| | - Qinxue Hu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences , Wuhan 430071, PR China
| | - Peng Zhou
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Sciences, Wuhan University , Wuhan 430072, PR China
| | - Yuntao Wu
- National Center for Biodefense and Infectious Diseases, Department of Molecular and Microbiology, George Mason University , Manassas, Virginia 22030, United States
| | - Xian-En Zhang
- State Key Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences , Beijing 100101, PR China
| | - Zongqiang Cui
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences , Wuhan 430071, PR China
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Xiao Q, Huang S, Ge Y, He Z, Liu Y, Liang J. A novel fluorescent silver ion biosensor based on nucleic acid molecular "light switch". J Fluoresc 2009; 20:541-9. [PMID: 20016931 DOI: 10.1007/s10895-009-0578-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Accepted: 12/07/2009] [Indexed: 10/20/2022]
Abstract
As one of nucleic acid molecular "light switch", Ru(bipy)(2)(dppx)(2+) is a good probe for the determination of double-helical DNA, which displays intense fluorescence when double-helical DNA is present. However, the fluorescence of Ru(bipy)(2)(dppx)(2+) is quenched when Ag(+) is added to the Ru(bipy)(2)(dppx)(2+)-DNA system. Based on the quenching of the fluorescence of Ru(bipy)(2)(dppx)(2+)-DNA system by Ag(+), a simple, rapid and specific method for Ag(+) determination was proposed. In the optimum conditions, Ag(+) concentration versus Ru(bipy)(2)(dppx)(2+) fluorescence intensity gave a linear response in the range from 0.2 to 6.0 microM with a detection limit (3sigma) of 3.2 x 10(-8) M. The proposed method has been applied to determine the Ag(+) in water samples and sulfadiazine silver cream successfully. Because of the intense fluorescence of Ru(bipy)(2)dppx(2+) when DNA is present, the interaction between Ag(+) and DNA was confirmed by fluorescence microscopy and the phenomenon of the fluorescence images agreed well with the results. The possible mechanism of the reaction was also discussed by circular dichroism spectra and isothermal titration calorimetry.
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Affiliation(s)
- Qi Xiao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
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