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Liu Y, Li B, Cheng D, Duan X. Simple and sensitive fluorescence sensor for detection of potassium ion in the presence of high concentration of sodium ion using berberine–G-quadruplex complex as sensing element. Microchem J 2011. [DOI: 10.1016/j.microc.2011.07.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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52
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Nakayama S, Kelsey I, Wang J, Sintim HO. c-di-GMP can form remarkably stable G-quadruplexes at physiological conditions in the presence of some planar intercalators. Chem Commun (Camb) 2011; 47:4766-8. [PMID: 21399808 DOI: 10.1039/c0cc05432a] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The ubiquitous bacterial biofilm regulator, c-di-GMP can form G-quadruplexes at physiological conditions in the presence of some aromatic compounds, such as acriflavine and proflavine. The fluorescence of these compounds is quenched upon c-di-GMP binding and some of the formed c-di-GMP G-quadruplexes are stable even at 75 °C.
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Affiliation(s)
- Shizuka Nakayama
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
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53
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Ma DL, Chan DSH, Man BYW, Leung CH. Oligonucleotide-based luminescent detection of metal ions. Chem Asian J 2011; 6:986-1003. [PMID: 21337527 DOI: 10.1002/asia.201000870] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Indexed: 01/20/2023]
Abstract
Metal ions are prevalent in biological systems and are critically involved in essential life processes. However, excess concentrations of metals can pose a serious danger to living organisms. Oligonucleotides represent a versatile sensing platform for the detection of various molecular entities including metal ions. This review summarizes the recent advances in the development of oligonucleotide-based luminescent detection methods for metal ions.
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Affiliation(s)
- Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, China.
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54
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Xu H, Gao S, Yang Q, Pan D, Wang L, Fan C. Amplified fluorescent recognition of g-quadruplex folding with a cationic conjugated polymer and DNA intercalator. ACS APPLIED MATERIALS & INTERFACES 2010; 2:3211-3216. [PMID: 21028820 DOI: 10.1021/am1006854] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The single stranded DNA (ssDNA) with G-rich sequence can fold into G-quadruplex via intramolecular hydrogen-bonding interaction in the presence of ligand. This structure conversion can be specifically detected by a fluorescence method based on different interaction between SYBR Green I (SG) and various DNA structures. SG is proved to intercalate into G-quadruplex and results in high fluorescence intensity, which can be further amplified by 6-fold through fluorescence resonance energy transfer (FRET) from a water-soluble cationic conjugated polymer (CCP) to SG due to the high affinity of positively charged CCP to negatively charged rigid G-quadruplex, whereas it is not performed for ssDNA in the absence of K(+). As a result, the ssDNA/SG/CCP complex can be used to detect potassium ions with improved selectivity in a label-free and cost-effective manner.
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Affiliation(s)
- Hui Xu
- School of Chemistry and Material Sciences, Ludong University, Yantai 264025, China
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55
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Qin H, Ren J, Wang J, Luedtke NW, Wang E. G-Quadruplex-Modulated Fluorescence Detection of Potassium in the Presence of a 3500-Fold Excess of Sodium Ions. Anal Chem 2010; 82:8356-60. [DOI: 10.1021/ac101894b] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Haixia Qin
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China and Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China, and Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland
| | - Jiangtao Ren
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China and Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China, and Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland
| | - Jiahai Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China and Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China, and Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland
| | - Nathan W. Luedtke
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China and Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China, and Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland
| | - Erkang Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China and Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China, and Institute of Organic Chemistry, University of Zürich, Winterthurerstrasse 190, Zurich, CH-8057, Switzerland
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