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Du X, Xie H, Qin T, Yuan Y, Wang N. Ultrasensitive optical detection of strontium ions by specific nanosensor with ultrahigh binding affinity. Nat Commun 2024; 15:6530. [PMID: 39095434 PMCID: PMC11297212 DOI: 10.1038/s41467-024-50895-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Accepted: 07/24/2024] [Indexed: 08/04/2024] Open
Abstract
The release and escape of radioactive materials has posed tremendous threats to the global environment. Among various radioactive elements, 90Sr has attracted growing attention due to its long half-life and its tendency to accumulate in bone tissue. Nonetheless, the concentration of 90Sr in radioactive waste is exceedingly low, far below the detection limits of currently available strontium-targeting chemical sensors. Herein, we propose an optical nanosensor (Sr2+-nanosensor) that exhibits an ultra-low detection limit of 0.5 nM, surpassing the 90Sr in the treated radioactive water from the Fukushima. The sensor offers wide sensing range of eight orders of magnitude, rapid response of less than 10 s, and high selectivity against 31 common ions. These excellent performances are attributed to a specific ligand (Sr2+-ligand) for Sr2+ recognition. The Sr2+ is found to be bound by six oxygen atoms from the Sr2+-ligand with a stability constant at least two orders higher than that of other traditional ligands. This study offers invaluable insights for the design of Sr2+-sensing methodologies as well as a technique for detecting trace amounts of environmental radioactive pollution.
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Affiliation(s)
- Xinfeng Du
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China
| | - Hua Xie
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China
| | - Tianyi Qin
- Key Laboratory of Biomedical Engineering of Hainan Province, One Health Institute, Hainan University, Haikou, 570228, PR China
| | - Yihui Yuan
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China.
| | - Ning Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228, PR China.
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Rodríguez R, Meza-Figueroa D, Robles-Morua A, Tuxpan-Vargas J, Vázquez-Vázquez E, Sen-Gupta B, Martínez-Villegas N. Integrating multiple spheres to identify the provenance and risk of urban dust and potentially toxic elements: Case study from central Mexico. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 337:122525. [PMID: 37683756 DOI: 10.1016/j.envpol.2023.122525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/30/2023] [Accepted: 09/06/2023] [Indexed: 09/10/2023]
Abstract
This study aims to improve the current method of studying potentially toxic elements (PTEs) in urban dust using direct chemical evidence (from dust, rock, and emission source samples) and robust geochemical methods. The provenance of urban dust was determined using rare earth elements (REEs) and geochemical diagrams (V-Ni-Th*10, TiO2 vs. Zr, and Zr/Ti vs. Nb/Y). The geogenic or anthropogenic source of PTEs was determined using the enrichment factor (EF) and compositional data analysis (CoDA), while a PTE's point emission source was identified using a 3.1*La-1.54*Ce-Zn diagram, mineralogy, and morphology analyses. The spatiotemporal distribution of PTEs was determined using a geographic information system, and their health risk (by inhalation) was estimated using a lung bioaccessibility test and particle size distribution. We collected urban dust (n = 38), rock (n = 4), and zinc concentrate (n = 2) samples and determined PTEs and REEs in a city of 1.25 million inhabitants in central Mexico. Results showed that urban dust derived from the San Miguelito Range. REEs, Sc, and Zr were geogenic, while Mn, Cu, Zn, As, and Pb were anthropogenic. Due to the presente of sphalerite particles, a zinc refinery was identified as the point emission source of Zn, As, and Pb. High concentrations of Zn (5000-20,008 mg/kg), As (120-284 mg/kg), and Pb (350-776 mg/kg) were found in urban dust near the zinc refinery. Additionally, particles of PM2.5 (66-84%), PM5.0 (13-27%), PM10 (3-8%), and PM20 (0-2%) and lung bioaccessibility of Sr (48.5-72.4%), Zn (9.6-28.4%), Cu (10.5-27.0%), Fe (4.5-8.6%), Mn (2.9-9.2%), Cr (38.3%) and Pb (30.6%) demonstrated a latent risk to human health. These approaches improve our understanding of the provenance of urban dust and its PTE emission sources in urban areas.
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Affiliation(s)
- Rodrigo Rodríguez
- IPICYT, Instituto Potosino de Investigación Cientifica y Tecnologica, Division de Geociencias Aplicadas, Camino a la Presa San Jose No. 2055, Col. Lomas 4a Sec., C.P. 78216, San Luis Potosi, SLP, Mexico
| | - Diana Meza-Figueroa
- UNISON, Universidad de Sonora, Departamento de Geología, Rosales y Encinas s/n, C.P. 83000, Hermosillo, Sonora, Mexico
| | - Agustin Robles-Morua
- ITSON, Instituto Tecnológico de Sonora, Departamento de Ciencias del Agua y del Medio Ambiente, 5 de febrero No. 818 sur, Col. Centro, C.P.85000, Cd. Obregón, Sonora, Mexico
| | - José Tuxpan-Vargas
- IPICYT, Instituto Potosino de Investigación Cientifica y Tecnologica, Division de Geociencias Aplicadas, Camino a la Presa San Jose No. 2055, Col. Lomas 4a Sec., C.P. 78216, San Luis Potosi, SLP, Mexico
| | - Elena Vázquez-Vázquez
- UASLP, Universidad Autónoma de San Luis Potosí, Instituto de Metalurgia, Sierra Leona No. 550, Col. Lomas 2a Sec, C.P. 78210, San Luis Potosi, SLP, Mexico
| | - Bhaskar Sen-Gupta
- Heriot Watt University, School of Energy, Geoscience, Infrastructure and Society, Room 2.02A, William Arrol Building, EH14 4AS, Edinburgh, United Kingdom
| | - Nadia Martínez-Villegas
- IPICYT, Instituto Potosino de Investigación Cientifica y Tecnologica, Division de Geociencias Aplicadas, Camino a la Presa San Jose No. 2055, Col. Lomas 4a Sec., C.P. 78216, San Luis Potosi, SLP, Mexico.
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Liang JH, Pu YQ, Liu ML, Hu LX, Bao WW, Zhang YS, Kakaer A, Zhao Y, Chen YC, Pu XY, Huang SY, Jiang N, Huang S, Dong GH, Chen YJ. Joint effect of whole blood metals exposure with dyslipidemia in representative US adults in NHANES 2011-2020. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:96604-96616. [PMID: 37578581 DOI: 10.1007/s11356-023-28903-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 07/17/2023] [Indexed: 08/15/2023]
Abstract
With little knowledge on the joint effects of metal exposure on dyslipidemia, we aimed to investigate the relationship between exposure to metal and dyslipidemia among US adults based on the National Health and Nutrition Examination Survey (NHANES). Based on the five NHANES waves (2011-2020), we selected five metals in blood as exposure, namely, cadmium (Cd), lead (Pb), total mercury (Hg), manganese (Mn), and selenium (Se), which were detected by inductively coupled plasma mass spectrometry. Survey-multivariable logistic regression, generalized weighted quantile sum (WQS), and Bayesian kernel machine regression (BKMR) were performed to determine whether dyslipidemia was associated with single metals or mixed metals. Our study included 12,526 participants aged from 20 to 80, representing 577.1 million non-institutionalized US adults. We found a positive association between several metals including Pb [adjusted odds ratio (AOR) = 1.332, 95%CI: 1.165, 1.522], total Hg (AOR = 1.264, 95%CI: 1.120, 1.427), Mn (AOR = 1.181, 95%CI: 1.046, 1.334), and Se (AOR = 1.771, 95%CI: 1.576, 1.992) and dyslipidemia. According to the WQS approach, metal mixtures were positively associated with dyslipidemia (AOR: 1.310, 95%CI: 1.216, 1.411) after a full-model adjustment. As is shown in the BKMR model, mixed metals tended to be positively associated with dyslipidemia ratios in a significant manner. Females, non-Hispanic White populations, people aged over 60, and those who did a little physical activity had a greater risk for dyslipidemia. Our findings suggest metals including Cd, Pb, Hg, Mn, and Se and their combinations may adversely affect dyslipidemia among US adults. Due to the cross-sectional nature of the study, it is possible that reverse causation may exist.
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Affiliation(s)
- Jing-Hong Liang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Ying-Qi Pu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Mei-Ling Liu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Li-Xin Hu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Wen-Wen Bao
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Yu-Shan Zhang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Aerziguli Kakaer
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Yu Zhao
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Yi-Can Chen
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Xue-Ya Pu
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Shao-Yi Huang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Nan Jiang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Shan Huang
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080
| | - Guang-Hui Dong
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Guangdong Provincial Engineering Technology Research Center of Environmental and Health Risk Assessment, Department of Occupational and Environmental Health, School of Public Health, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Ya-Jun Chen
- Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, No.74 Zhongshan 2nd Road, Yuexiu District, Guangzhou, People's Republic of China, 510080.
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Electrochemical aptasensor based on carboxylated graphene oxide modified carbon paste electrode for strontium ultrasensitive detection. Anal Biochem 2023; 666:115081. [PMID: 36773630 DOI: 10.1016/j.ab.2023.115081] [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: 12/21/2022] [Revised: 02/04/2023] [Accepted: 02/09/2023] [Indexed: 02/12/2023]
Abstract
Determination of strontium ions (Sr2+) is crucial with regard to human health and environmental protection. In this work, an electrochemical aptasensor was designed using carboxylated graphene oxide (CGO)-modified carbon paste electrode (CGO/CPE) for ultrasensitive determination of Sr2+ ions. The electrochemical determination was accomplished with employing the constructed G-quadruplex (G4) aptamer at the surface of aptasensor in presence of carmoisine (CA) as an electrochemical label. Moreover, NH2-functionalized aptamer was immobilized onto CGO/CPE via carboxylic group. Hence, differential pulse voltammetry was applied for detection of any possible signal changes of CA on the aptasensor surface. The reduction peak currents of CA in the absence and presence of Sr2+ in solution were different and this difference was linearly dependent to the concentration of Sr2+ in solution. The analytical results revealed that our novel aptasensor showed two appropriate linear ranges (0.1-8.0 pM and 3.0-20.0 nM) versus to Sr2+ ion concentrations with the limit of detection of 0.06 pM (S/N = 3). Excellent stability, selectivity and reproducibility were achieved with this new electrochemical aptasensor. Additionally, the aptasensor showed good achievements in analysis of Sr2+ in aqueous and urine real samples, which making this proposed method a promising candidate for electrochemical detection of Sr2+ in real samples.
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5
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A novel pH-Dependent sensor for recognition of strontium ions in water: A hierarchically structured mesoporous architectonics. Talanta 2022. [DOI: 10.1016/j.talanta.2022.124064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Liu YQ, Ju XJ, Zhou XL, Mu XT, Tian XY, Zhang L, Liu Z, Wang W, Xie R, Chu LY. A novel chemosensor for sensitive and facile detection of strontium ions based on ion-imprinted hydrogels modified with guanosine derivatives. JOURNAL OF HAZARDOUS MATERIALS 2022; 421:126801. [PMID: 34388916 DOI: 10.1016/j.jhazmat.2021.126801] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 06/13/2023]
Abstract
A novel chemosensor is developed for the sensitive and facile detection of trace strontium ions (Sr2+) based on the ion-imprinted hydrogels. With Sr2+ as the templates, the ion-imprinted hydrogels are synthesized by copolymerizing the ion-responsive units 5'-O-acryloyl-2',3'-O-isopropylidene guanosine (APG) and the thermo-responsive units N-isopropylacrylamide (NIPAM). In the presence of Sr2+, APG units can self-assemble to form planar G-quartets via the complexation with Sr2+, which are introduced into the gel network during polymerization. Then Sr2+ templates can be removed by multiple repeated washing. When re-exposed to Sr2+, the relaxed G-quartets can recognize Sr2+, leading to the weakening of electrostatic repulsion between the four oxygen atoms in the G-quartets and inducing the shrinkage of the hydrogels. In this work, the Sr2+-imprinted chemosensors are designed as the grating systems for detecting trace Sr2+. Based on the array of hydrogel strings synthesized on a nano-scale, the smart grating systems thus constructed can convert and amplify the Sr2+ concentration signals to the easily-measurable optical signals. With the Sr2+-imprinted hydrogel gratings, trace Sr2+ (10-11 M) in an aqueous solution can be detected sensitively. Moreover, the proposed Sr2+-imprinted chemosensors can be integrated with other smart systems for developing various detectors with high performance.
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Affiliation(s)
- Yu-Qiong Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Xiao-Jie Ju
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China.
| | - Xing-Long Zhou
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Xiao-Ting Mu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Xiao-Yu Tian
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Lu Zhang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Zhuang Liu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Wei Wang
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Rui Xie
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
| | - Liang-Yin Chu
- School of Chemical Engineering, Sichuan University, Chengdu 610065, People's Republic of China; State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China
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7
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Zhu X, Fan Y, Sheng J, Gu L, Tao Q, Huang R, Liu K, Yang L, Chen G, Cao H, Li K, Tao F, Wang S. Association Between Blood Heavy Metal Concentrations and Dyslipidemia in the Elderly. Biol Trace Elem Res 2021; 199:1280-1290. [PMID: 32651944 DOI: 10.1007/s12011-020-02270-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2019] [Accepted: 06/23/2020] [Indexed: 10/23/2022]
Abstract
Our objective was to evaluate the relationship of blood metal levels including strontium, cadmium, lead, vanadium, aluminum, cobalt, and manganese with dyslipidemia in the elderly Chinese population. In this study, stratified cluster sampling was adopted in the elderly in two communities of Lu'an City from June to September 2016, and 1013 participants were finally included. The inductively coupled plasma mass spectrometry (ICP-MS) was used to measure the metals' concentrations in whole blood. After multivariable adjustment, the odds ratios (95% confidence interval [CI]) of dyslipidemia associated with the highest quartile of metal concentrations were 1.32 (0.89 ~ 1.96), 1.28 (0.83 ~ 1.97), 1.86 (1.23 ~ 2.80), 0.80 (0.55 ~ 1.16), 0.76 (0.51 ~ 1.13), 0.76 (0.53 ~ 1.11), and 1.14 (0.78 ~ 1.67) for strontium, cadmium, lead, vanadium, aluminum, cobalt, and manganese, respectively, compared with the lowest quartile. After reducing the dimensionality of metal elements by principal component analysis, we found that the combined exposure of aluminum, cobalt, and vanadium was the protective factor of non-dyslipidemia, while the combined exposure of cadmium, strontium, and lead was the risk factor of dyslipidemia.
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Affiliation(s)
- Xingmeng Zhu
- School of Public Health, Anhui Medical University, Hefei, People's Republic of China
| | - Yong Fan
- Anhui Provincial Center for Disease Control and Prevention, Hefei, People's Republic of China
| | - Jie Sheng
- School of Public Health, Anhui Medical University, Hefei, People's Republic of China
| | - Ling Gu
- School of Public Health, Anhui Medical University, Hefei, People's Republic of China
| | - Qi Tao
- School of Public Health, Anhui Medical University, Hefei, People's Republic of China
| | - Rui Huang
- School of Public Health, Anhui Medical University, Hefei, People's Republic of China
| | - Kaiyong Liu
- School of Public Health, Anhui Medical University, Hefei, People's Republic of China
| | - Linsheng Yang
- School of Public Health, Anhui Medical University, Hefei, People's Republic of China
| | - Guimei Chen
- School of Health Management, Anhui Medical University, Hefei, People's Republic of China
| | - Hongjuan Cao
- Lu'an Center for Disease Control and Prevention, Lu'an, People's Republic of China
| | - Kaichun Li
- Lu'an Center for Disease Control and Prevention, Lu'an, People's Republic of China
| | - Fangbiao Tao
- School of Public Health, Anhui Medical University, Hefei, People's Republic of China
- School of Health Management, Anhui Medical University, Hefei, People's Republic of China
| | - Sufang Wang
- School of Public Health, Anhui Medical University, Hefei, People's Republic of China.
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9
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Yu Y, Zhang Q, Gao H, Yan C, Zheng X, Yang T, Zhou X, Shao Y. Metalloenzyme-mimic innate G-quadruplex DNAzymes using directly coordinated metal ions as active centers. Dalton Trans 2020; 49:13160-13166. [PMID: 32936164 DOI: 10.1039/d0dt02871a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
G-quadruplex DNAs (G4s) have been reported to exhibit the DNAzyme activities by binding with some metal complexes and functional organic ligands. However, there is a challenge to develop metalloenzyme-mimic G4-based innate DNAzymes using the complexed metal ions directly serving as the active centers. This will diversify DNAzymes for developing novel devices since G4 structures are more polymorphic than the other DNA foldings. In this work, we found that the lanthanide trivalent cerium ion of Ce3+ can bind to the human telomere G4 (htG4) according to a 1 : 2 binding mode favorable for creating metalloenzymes-mimic G4 DNAzymes. This Ce3+-G4 entity exhibits a peroxidase activity towards the oxidation of the substrate of 3,3,5,5-tetramethylbenzidine (TMB) by hydrogen peroxide. The 5' G4 tetrads with the orderly arranged carbonyl oxygen atoms are believed to be the coordination sites for Ce3+ and favor the conversion between Ce3+ and Ce4+. Our work provides an alternative feasibility in developing the G4-based innate DNAzymes for variant applications.
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Affiliation(s)
- Yali Yu
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, People's Republic of China.
| | - Qingqing Zhang
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, People's Republic of China.
| | - Heng Gao
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, People's Republic of China.
| | - Chenxiao Yan
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, People's Republic of China.
| | - Xiong Zheng
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, People's Republic of China.
| | - Tong Yang
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, People's Republic of China.
| | - Xiaoshun Zhou
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, People's Republic of China.
| | - Yong Shao
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, People's Republic of China.
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10
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Wagh AA, Fernandes M. 2′‐5′‐Isomerically Linked Thrombin‐Binding Aptamer (isoTBA) Forms a Stable Unimolecular Parallel G‐Quadruplex in the Presence of Sr
2+
Ions. ChemistrySelect 2019. [DOI: 10.1002/slct.201902005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Atish A. Wagh
- Organic Chemistry DivisionCSIR-National Chemical Laboratory (CSIR-NCL) Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
| | - Moneesha Fernandes
- Organic Chemistry DivisionCSIR-National Chemical Laboratory (CSIR-NCL) Dr. Homi Bhabha Road Pune 411008 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India
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11
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Ye T, Gao H, Zhang Q, Yan C, Yu Y, Fei Y, Gao L, Zhou X, Shao Y. Polarity inversion sensitized G-quadruplex metal sensors with K + tolerance. Biosens Bioelectron 2019; 145:111703. [PMID: 31546203 DOI: 10.1016/j.bios.2019.111703] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Revised: 09/05/2019] [Accepted: 09/13/2019] [Indexed: 12/22/2022]
Abstract
Due to the high abundance of K+ in environments and K+-induced high stability of G-quadruplex (G4), developing a selective G4-based fluorescent sensor for other metal ions with K+ tolerance is a great challenge. Herein, we found that even in the presence of 15000-fold excess of K+, Ba2+ exhibits a highly specific binding with a human telomeric G4 (htG4) in comparison with other G4-binding metal ions such as Pb2+ and Sr2+. This specific binding event can be recognized by a natural fluorophore of hypericin with a lighting-up fluorescence response. Interestingly, inverting the polarity of the most 3' G in htG4 can sensitize the Ba2+ response with the retaining Ba2+ specificity and K+ tolerance. This polarity inversion of htG4 causes a G4 conformation change in K+ and the polarity-inverted htG4 tends to favorably dimerize in response to the Ba2+ specific binding. To our knowledge, this is the first report that polarity inversion of G4 can be applied to construct a selective metal sensor with K+ tolerance. Our findings will open a new way to conveniently regulate the G4 conformation and stability by polarity inversion towards developing high-performance sensors.
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Affiliation(s)
- Ting Ye
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
| | - Heng Gao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
| | - Qingqing Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
| | - Chenxiao Yan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
| | - Yali Yu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
| | - Yifan Fei
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
| | - Longlong Gao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
| | - Xiaoshun Zhou
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
| | - Yong Shao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Institute of Physical Chemistry, College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China.
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12
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Affiliation(s)
- Wenhu Zhou
- Xiangya
School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Runjhun Saran
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Juewen Liu
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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13
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Wu T, Ye M, Mao T, Lin F, Hu Y, Gan N, Shao Y. Human telomeric hybrid-2-over-hybrid-1 G-quadruplex targeting and a selective hypersaline-tolerant sensor using abasic site-engineered monomorphism. Anal Chim Acta 2017; 964:161-169. [DOI: 10.1016/j.aca.2017.01.041] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 01/13/2017] [Accepted: 01/21/2017] [Indexed: 02/02/2023]
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14
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Distinct differences in metal ion specificity of RNA and DNA G-quadruplexes. J Biol Inorg Chem 2016; 21:975-986. [PMID: 27704222 DOI: 10.1007/s00775-016-1393-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Accepted: 09/02/2016] [Indexed: 01/21/2023]
Abstract
RNA G-quadruplexes, as their well-studied DNA analogs, require the presence of cations to fold and remain stable. This is the first comprehensive study on the interaction of RNA quadruplexes with metal ions. We investigated the formation and stability of two highly conserved and biologically relevant RNA quadruplex-forming sequences (24nt-TERRA and 18nt-NRAS) in the presence of several monovalent and divalent metal ions, namely Li+, Na+, K+, Rb+, Cs+, NH4+, Mg2+, Ca2+, Sr2+, and Ba2+. Circular dichroism was used to probe the influence of these metal ions on the folded fraction of the parallel G-quadruplexes, and UV thermal melting experiments allowed to assess the relative stability of the structures in each cationic condition. Our results show that the RNA quadruplexes are more stable than their DNA counterparts under the same buffer conditions. We have observed that the addition of mainly Na+, K+, Rb+, NH4+, as well as Sr2+ and Ba2+ in water, shifts the equilibrium to the folded quadruplex form, whereby the NRAS sequence responds stronger than TERRA. However, only K+ and Sr2+ lead to a significant increase in the stability of the folded structures, which is consistent with their coordination to the O6 atoms from the G-quartet guanosines. Compared to the respective DNA motives, dNRAS and htelo, the RNA sequences are not stabilized by Na+ ions. Finally, the difference in response between NRAS and TERRA, as well as to the corresponding DNA sequences with respect to different metal ions, could potentially be exploited for selective targeting purposes.
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15
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Lin S, Yang C, Mao Z, He B, Wang YT, Leung CH, Ma DL. A G-pentaplex-based assay for Cs + ions in aqueous solution using a luminescent Ir(III) complex. Biosens Bioelectron 2016; 77:609-12. [DOI: 10.1016/j.bios.2015.10.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 10/08/2015] [Accepted: 10/09/2015] [Indexed: 10/22/2022]
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16
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Largy E, Marchand A, Amrane S, Gabelica V, Mergny JL. Quadruplex Turncoats: Cation-Dependent Folding and Stability of Quadruplex-DNA Double Switches. J Am Chem Soc 2016; 138:2780-92. [PMID: 26837276 DOI: 10.1021/jacs.5b13130] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Quadruplex (G4) nucleic acids, a family of secondary structures formed by guanine-rich sequences, exhibit an important structural polymorphism. We demonstrate here that G-rich DNA sequences may function as a double switch based on different triggers, provided that their quadruplex structures and stability display a high dependence on cation nature and concentration. A first switch is based on a remarkable antiparallel-to-parallel conversion, taking place in a few seconds at room temperature by addition of low KCl amounts to a sodium-rich sample. The second switch involves the conversion of alternative antiparallel quadruplex structures binding only one cation, formed in the presence of sub-millimolar potassium or strontium concentrations, to parallel structures by increasing the cation concentration. Incidentally, extremely low K(+) or Sr(2+) concentrations (≤5 equiv) are sufficient to induce G4 formation in a buffer devoid of other G4-promoting cations, and we suggest that the alternative structures observed contain only two tetrads. Such DNA systems are biological relevant targets, can be used in nanotechnology applications, and are valuable methodological tools for understanding DNA quadruplex folding, notably at low cation concentrations. We demonstrate that this behavior is not restricted to a narrow set of sequences but can also be found for other G-quadruplex-forming motifs, arguing for widespread applications.
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Affiliation(s)
- Eric Largy
- U1212, ARNA Laboratory, Inserm , F-33000 Bordeaux, France.,IECB, ARNA Laboratory, Université de Bordeaux , F-33600 Pessac, France.,UMR 5320, ARNA Laboratory, CNRS , F-33600 Pessac, France
| | - Adrien Marchand
- U1212, ARNA Laboratory, Inserm , F-33000 Bordeaux, France.,IECB, ARNA Laboratory, Université de Bordeaux , F-33600 Pessac, France.,UMR 5320, ARNA Laboratory, CNRS , F-33600 Pessac, France
| | - Samir Amrane
- U1212, ARNA Laboratory, Inserm , F-33000 Bordeaux, France.,IECB, ARNA Laboratory, Université de Bordeaux , F-33600 Pessac, France.,UMR 5320, ARNA Laboratory, CNRS , F-33600 Pessac, France
| | - Valérie Gabelica
- U1212, ARNA Laboratory, Inserm , F-33000 Bordeaux, France.,IECB, ARNA Laboratory, Université de Bordeaux , F-33600 Pessac, France.,UMR 5320, ARNA Laboratory, CNRS , F-33600 Pessac, France
| | - Jean-Louis Mergny
- U1212, ARNA Laboratory, Inserm , F-33000 Bordeaux, France.,IECB, ARNA Laboratory, Université de Bordeaux , F-33600 Pessac, France.,UMR 5320, ARNA Laboratory, CNRS , F-33600 Pessac, France
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17
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Wang W, Kang TS, Chan PWH, Lu JJ, Chen XP, Leung CH, Ma DL. A label-free G-quadruplex-based mercury detection assay employing the exonuclease III-mediated cleavage of T-Hg 2+-T mismatched DNA. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2015; 16:065004. [PMID: 27877846 PMCID: PMC5069990 DOI: 10.1088/1468-6996/16/6/065004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 11/03/2015] [Accepted: 11/04/2015] [Indexed: 05/30/2023]
Abstract
We report herein the use of an exonuclease III and G-quadruplex probe to construct a G-quadruplex-based luminescence detection platform for Hg2+. Unlike common DNA-based Hg2+ detection methods, when using the dsDNA probe to monitor the hairpin formation, the intercalation of the dsDNA probe may be influenced by the distortion of dsDNA. This 'mix-and-detect' methodology utilized the G-quadruplex probe as the signal transducer and is simple, rapid, convenient to use and can detect down to 20 nM of Hg2+.
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Affiliation(s)
- Wanhe Wang
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Tian-Shu Kang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Philip Wai Hong Chan
- School of Chemistry, Monash University, Clayton, Victoria 3800, Australia
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - Jin-Jian Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Xiu-Ping Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
- Partner State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University, Hong Kong, China
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18
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Leung KH, He B, Yang C, Leung CH, Wang HMD, Ma DL. Development of an Aptamer-Based Sensing Platform for Metal Ions, Proteins, and Small Molecules through Terminal Deoxynucleotidyl Transferase Induced G-Quadruplex Formation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:24046-52. [PMID: 26449329 DOI: 10.1021/acsami.5b08314] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We report a label-free, structure-independent luminescent-sensing platform for metal ions, proteins, and small molecules utilizing an Ir(III) complex, terminal deoxynucleotidyl transferase (TdT), and a structure-folding aptamer. A novel G-quadruplex-selective Ir(III) complex was identified to detect the nascent G-quadruplex motifs with an enhanced luminescence response. Unlike most label-free DNA-based assays reported in the literature, this sensing platform does not require a specific secondary structure of aptamer, thus greatly simplifying DNA design. The detection platform was demonstrated by the detection of K(+) ions, thrombin, and cocaine as representative examples of metal ions, proteins, and small molecules.
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Affiliation(s)
| | | | - Chao Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao, China
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao, China
| | - Hui-Min David Wang
- Graduate Institute of Natural Products, Kaohsiung Medical University , Kaohsiung 807, Taiwan
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19
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Ma DL, Wang M, He B, Yang C, Wang W, Leung CH. A Luminescent Cocaine Detection Platform Using a Split G-Quadruplex-Selective Iridium(III) Complex and a Three-Way DNA Junction Architecture. ACS APPLIED MATERIALS & INTERFACES 2015; 7:19060-19067. [PMID: 26284502 DOI: 10.1021/acsami.5b05861] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, a series of 10 in-house cyclometalated iridium(III) complexes bearing different auxiliary ligands were tested for their selectivity toward split G-quadruplex in order to construct a label-free switch-on cocaine detection platform employing a three-way junction architecture and a G-quadruplex motif as a signal output unit. Through two rounds of screening, we discovered that the iridium(III) complex 7 exhibited excellent selectivity toward the intermolecular G-quadruplex motif. A detection limit as low as 30 nM for cocaine can be achieved by this sensing approach with a linear relationship between luminescence intensity and cocaine concentration established from 30 to 300 nM. Furthermore, this sensing approach could detect cocaine in diluted oral fluid. We hope that our simple, signal-on, label-free oligonucleotide-based sensing method for cocaine using a three-way DNA junction architecture could act as a useful platform in bioanalytical research.
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Affiliation(s)
- Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University , Hong Kong, China
- Partner State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University , Hong Kong, China
| | - Modi Wang
- Department of Chemistry, Hong Kong Baptist University , Hong Kong, China
| | - Bingyong He
- Department of Chemistry, Hong Kong Baptist University , Hong Kong, China
| | - Chao Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao, China
| | - Wanhe Wang
- Department of Chemistry, Hong Kong Baptist University , Hong Kong, China
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao, China
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20
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Wang M, He B, Lu L, Leung CH, Mergny JL, Ma DL. Label-free luminescent detection of LMP1 gene deletion using an intermolecular G-quadruplex-based switch-on probe. Biosens Bioelectron 2015; 70:338-44. [DOI: 10.1016/j.bios.2015.03.047] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 03/14/2015] [Accepted: 03/20/2015] [Indexed: 12/27/2022]
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21
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Lin S, Gao W, Tian Z, Yang C, Lu L, Mergny JL, Leung CH, Ma DL. Luminescence switch-on detection of protein tyrosine kinase-7 using a G-quadruplex-selective probe. Chem Sci 2015; 6:4284-4290. [PMID: 29218197 PMCID: PMC5707507 DOI: 10.1039/c5sc01320h] [Citation(s) in RCA: 154] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 05/17/2015] [Indexed: 12/22/2022] Open
Abstract
A series of luminescent iridium(iii) complexes were synthesised and evaluated for their ability to act as luminescent G-quadruplex-selective probes. The iridium(iii) complex 9 [Ir(pbi)2(5,5-dmbpy)]PF6 (where pbi = 2-phenyl-1H-benzo[d]imidazole; 5,5-dmbpy = 5,5'-dimethyl-2,2'-bipyridine) exhibited high luminescence for G-quadruplex DNA compared to dsDNA and ssDNA, and was employed to construct a G-quadruplex-based assay for protein tyrosine kinase-7 (PTK7) in aqueous solution. PTK7 is an important biomarker for a range of leukemias and solid tumors. In the presence of PTK7, the specific binding of the sgc8 aptamer sequence triggers a structural transition and releases the G-quadruplex-forming sequence. The formation of the nascent G-quadruplex structure is then detected by the G-quadruplex-selective iridium(iii) complex with an enhanced luminescent response. Moreover, the application of the assay for detecting PTK7 in cellular debris and membrane protein extract was demonstrated. To our knowledge, this is the first G-quadruplex-based assay for PTK7.
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Affiliation(s)
- Sheng Lin
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Wei Gao
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Zeru Tian
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Chao Yang
- State Key Laboratory of Quality Research in Chinese Medicine , Institute of Chinese Medical Sciences , University of Macau , Macao , China .
| | - Lihua Lu
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
| | - Jean-Louis Mergny
- University of Bordeaux , ARNA Laboratory , Bordeaux , France .
- INSERM , U869 , IECB , Pessac , France
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine , Institute of Chinese Medical Sciences , University of Macau , Macao , China .
| | - Dik-Lung Ma
- Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China .
- Partner State Key Laboratory of Environmental and Biological Analysis , Hong Kong Baptist University , Kowloon Tong , Hong Kong , China
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22
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Ren J, Wang T, Wang E, Wang J. Versatile G-quadruplex-mediated strategies in label-free biosensors and logic systems. Analyst 2015; 140:2556-72. [DOI: 10.1039/c4an02282c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review addresses how G-quadruplex (G4)-mediated biosensors convert the events of target recognition into a measurable physical signal. The application of label-free G4-strategies in the construction of logic systems is also discussed.
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Affiliation(s)
- Jiangtao Ren
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Tianshu Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Erkang Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
| | - Jin Wang
- State Key Laboratory of Electroanalytical Chemistry
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun
- China
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23
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Ma DL, Lin S, Lu L, Wang M, Hu C, Liu LJ, Ren K, Leung CH. G-quadruplex-based logic gates for HgII and AgI ions employing a luminescent iridium(iii) complex and extension of metal-mediated base pairs by polymerase. J Mater Chem B 2015; 3:4780-4785. [DOI: 10.1039/c5tb00718f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report herein the synthesis of a series of cyclometallated iridium(iii) complexes as luminescent G-quadruplex-selective probes to construct AND, OR and INHIBIT logic gates for the detection of HgII and AgI ions.
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Affiliation(s)
- Dik-Lung Ma
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- China
- Partner State Key Laboratory of Environmental and Biological Analysis
| | - Sheng Lin
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- China
| | - Lihua Lu
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- China
| | - Modi Wang
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- China
| | - Chong Hu
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- China
| | - Li-Juan Liu
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
| | - Kangning Ren
- Department of Chemistry
- Hong Kong Baptist University
- Kowloon Tong
- China
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- Macao
- China
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24
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Wang M, Leung KH, Lin S, Chan DSH, Leung CH, Ma DL. A G-quadruplex-based, label-free, switch-on luminescent detection assay for Ag+ions based on the exonuclease III-mediated digestion of C–Ag+–C DNA. J Mater Chem B 2014; 2:6467-6471. [DOI: 10.1039/c4tb01140f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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25
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Ma DL, Lin S, Leung KH, Zhong HJ, Liu LJ, Chan DSH, Bourdoncle A, Mergny JL, Wang HMD, Leung CH. An oligonucleotide-based label-free luminescent switch-on probe for RNA detection utilizing a G-quadruplex-selective iridium(III) complex. NANOSCALE 2014; 6:8489-8494. [PMID: 24816304 DOI: 10.1039/c4nr00541d] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report herein the synthesis and application of a novel G-quadruplex-selective luminescent iridium(iii) complex for the construction of an oligonucleotide-based, label-free, rapid and convenient luminescent RNA detection platform.
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Affiliation(s)
- Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China.
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26
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Lin S, He B, Shiu-Hin Chan D, Hong Chan PW, Leung CH, Ma DL. A G-quadruplex-based platform for the detection of Hg2+ ions using a luminescent iridium(iii) complex. RSC Adv 2014. [DOI: 10.1039/c4ra11240g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We report herein the synthesis of a series of cyclometalated iridium(iii) complexes as luminescent G-quadruplex-selective probes, which were used to construct an oligonucleotide-based platform for the dual detection and removal of Hg2+ ions.
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Affiliation(s)
- Sheng Lin
- Department of Chemistry
- Hong Kong Baptist University
- Hong Kong, China
| | - Bingyong He
- Department of Chemistry
- Hong Kong Baptist University
- Hong Kong, China
| | | | - Philip Wai Hong Chan
- School of Chemistry
- Monash University
- , Australia
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine
- Institute of Chinese Medical Sciences
- University of Macau
- Macao, China
| | - Dik-Lung Ma
- Department of Chemistry
- Hong Kong Baptist University
- Hong Kong, China
- Partner State Key Laboratory of Environmental and Biological Analysis
- Hong Kong Baptist University
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27
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G-quadruplexes as sensing probes. Molecules 2013; 18:14760-79. [PMID: 24288003 PMCID: PMC6270327 DOI: 10.3390/molecules181214760] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 11/13/2013] [Accepted: 11/13/2013] [Indexed: 01/09/2023] Open
Abstract
Guanine-rich sequences of DNA are able to create tetrastranded structures known as G-quadruplexes; they are formed by the stacking of planar G-quartets composed of four guanines paired by Hoogsteen hydrogen bonding. G-quadruplexes act as ligands for metal ions and aptamers for various molecules. Interestingly, the G-quadruplexes form a complex with anionic porphyrin hemin and exhibit peroxidase-like activity. This review focuses on overview of sensing techniques based on G-quadruplex complexes with anionic porphyrins for detection of various analytes, including metal ions such as K+, Ca2+, Ag+, Hg2+, Cu2+, Pb2+, Sr2+, organic molecules, nucleic acids, and proteins. Principles of G-quadruplex-based detection methods involve DNA conformational change caused by the presence of analyte which leads to a decrease or an increase in peroxidase activity, fluorescence, or electrochemical signal of the used probe. The advantages of various detection techniques are also discussed.
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28
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Ma DL, He HZ, Leung KH, Zhong HJ, Chan DSH, Leung CH. Label-free luminescent oligonucleotide-based probes. Chem Soc Rev 2013; 42:3427-40. [PMID: 23348604 DOI: 10.1039/c2cs35472a] [Citation(s) in RCA: 180] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Breakthrough advances in chemistry and biology over the last two decades have vastly expanded the repertoire of nucleic acid structure and function with potential application in multiple areas of science and technology, including sensing and analytical applications. DNA oligonucleotides represent popular tools for the development of sensing platforms due to their low cost, rich structural polymorphism, and their ability to bind to cognate ligands with sensitivity and specificity rivaling those for protein enzymes and antibodies. In this review, we give an overview of the "label-free" approach that has been a particular focus of our group and others for the construction of luminescent DNA-based sensing platforms. The label-free strategy aims to overcome some of the drawbacks associated with the use of covalently-labeled oligonucleotides prevalent in electrochemical and optical platforms. Label-free DNA-based probes harness the selective interaction between luminescent dyes and functional oligonucleotides that exhibit a "structure-switching" response upon binding to analytes. Based on the numerous examples of label-free luminescent DNA-based probes reported recently, we envisage that this field would continue to thrive and mature in the years to come.
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Affiliation(s)
- Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China.
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29
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Kim KT, Kim BH. A fluorescent probe for the 3'-overhang of telomeric DNA based on competition between two interstrand G-quadruplexes. Chem Commun (Camb) 2013; 49:1717-9. [PMID: 23344213 DOI: 10.1039/c3cc37504h] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A 6-mer oligonucleotide containing a fluorescent (Bod)U moiety has been used as a novel fluorescent probe for the 3'-overhang of telomeric DNA based on competition between non-fluorescent tetramolecular and fluorescent (3+1) intermolecular G-quadruplexes.
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Affiliation(s)
- Ki Tae Kim
- Department of Chemistry, BK School of Molecular Science, Pohang University of Science and Technology, Pohang 790-784, South Korea
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30
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He HZ, Chan DSH, Leung CH, Ma DL. G-quadruplexes for luminescent sensing and logic gates. Nucleic Acids Res 2013; 41:4345-59. [PMID: 23435319 PMCID: PMC3632106 DOI: 10.1093/nar/gkt108] [Citation(s) in RCA: 143] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Revised: 02/03/2013] [Accepted: 02/04/2013] [Indexed: 01/06/2023] Open
Abstract
G-quadruplexes represent a versatile sensing platform for the construction of label-free molecular detection assays owing to their diverse structures that can be selectively recognized by G-quadruplex-specific luminescent probes. In this Survey and Summary, we highlight recent examples of the application of the label-free strategy for the development of G-quadruplex-based luminescent detection platforms with a view towards the potential application of tetraplex structures in the design of DNA logic gates.
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Affiliation(s)
- Hong-Zhang He
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China and State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Daniel Shiu-Hin Chan
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China and State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Chung-Hang Leung
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China and State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
| | - Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China and State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao SAR, China
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31
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Leung KH, Ma VPY, He HZ, Chan DSH, Yang H, Leung CH, Ma DL. A highly selective G-quadruplex-based luminescent switch-on probe for the detection of nanomolar strontium(ii) ions in sea water. RSC Adv 2012. [DOI: 10.1039/c2ra21119j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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