1
|
Yu H, Zhu J, Shen G, Deng Y, Geng X, Wang L. Improving aptamer performance: key factors and strategies. Mikrochim Acta 2023; 190:255. [PMID: 37300603 DOI: 10.1007/s00604-023-05836-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 05/16/2023] [Indexed: 06/12/2023]
Abstract
Aptamers are functional single-stranded oligonucleotide fragments isolated from randomized libraries by Systematic Evolution of Ligands by Exponential Enrichment (SELEX), exhibiting excellent affinity and specificity toward targets. Compared with traditional antibody reagents, aptamers display many desirable properties, such as low variation and high flexibility, and they are suitable for artificial and large-scale synthesis. These advantages make aptamers have a broad application potential ranging from biosensors, bioimaging to therapeutics and other areas of application. However, the overall performance of aptamer pre-selected by SELEX screening is far from being satisfactory. To improve aptamer performance and applicability, various post-SELEX optimization methods have been developed in the last decade. In this review, we first discuss the key factors that influence the performance or properties of aptamers, and then we summarize the key strategies of post-SELEX optimization which have been successfully used to improve aptamer performance, such as truncation, extension, mutagenesis and modification, splitting, and multivalent integration. This review shall provide a comprehensive summary and discussion of post-SELEX optimization methods developed in recent years. Moreover, by discussing the mechanism of each approach, we highlight the importance of choosing the proper method to perform post-SELEX optimization.
Collapse
Affiliation(s)
- Hong Yu
- School of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture, Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
- Shanghai Jiao Tong University YunNan (Dali) Research Institute, Dali, 671000, Yunnan, China
- Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station, Ministry of Science and Technology, Ministry of Education, 800 Dongchuan Rd, Shanghai, 200240, China
- Shanghai Urban Forest Ecosystem Research Station, National Forestry and Grassland Administration, 800 Dongchuan Rd, Shanghai, 200240, China
| | - Jiangxiong Zhu
- School of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture, Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
- Shanghai Jiao Tong University YunNan (Dali) Research Institute, Dali, 671000, Yunnan, China
- Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station, Ministry of Science and Technology, Ministry of Education, 800 Dongchuan Rd, Shanghai, 200240, China
- Shanghai Urban Forest Ecosystem Research Station, National Forestry and Grassland Administration, 800 Dongchuan Rd, Shanghai, 200240, China
| | - Guoqing Shen
- School of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture, Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
- Shanghai Jiao Tong University YunNan (Dali) Research Institute, Dali, 671000, Yunnan, China
- Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station, Ministry of Science and Technology, Ministry of Education, 800 Dongchuan Rd, Shanghai, 200240, China
- Shanghai Urban Forest Ecosystem Research Station, National Forestry and Grassland Administration, 800 Dongchuan Rd, Shanghai, 200240, China
| | - Yun Deng
- School of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture, Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
- Shanghai Jiao Tong University YunNan (Dali) Research Institute, Dali, 671000, Yunnan, China
- Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station, Ministry of Science and Technology, Ministry of Education, 800 Dongchuan Rd, Shanghai, 200240, China
- Shanghai Urban Forest Ecosystem Research Station, National Forestry and Grassland Administration, 800 Dongchuan Rd, Shanghai, 200240, China
| | - Xueqing Geng
- School of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture, Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
- Shanghai Jiao Tong University YunNan (Dali) Research Institute, Dali, 671000, Yunnan, China
- Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station, Ministry of Science and Technology, Ministry of Education, 800 Dongchuan Rd, Shanghai, 200240, China
- Shanghai Urban Forest Ecosystem Research Station, National Forestry and Grassland Administration, 800 Dongchuan Rd, Shanghai, 200240, China
| | - Lumei Wang
- School of Agriculture and Biology, Key Laboratory of Urban Agriculture, Ministry of Agriculture, Bor S. Luh Food Safety Research Center, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China.
- Shanghai Jiao Tong University YunNan (Dali) Research Institute, Dali, 671000, Yunnan, China.
- Shanghai Yangtze River Delta Eco-Environmental Change and Management Observation and Research Station, Ministry of Science and Technology, Ministry of Education, 800 Dongchuan Rd, Shanghai, 200240, China.
- Shanghai Urban Forest Ecosystem Research Station, National Forestry and Grassland Administration, 800 Dongchuan Rd, Shanghai, 200240, China.
| |
Collapse
|
2
|
Wu G, Liu C, Cao B, Cao Z, Zhai H, Liu B, Jin S, Yang X, Lv C, Wang J. Connective tissue growth factor-targeting DNA aptamer suppresses pannus formation as diagnostics and therapeutics for rheumatoid arthritis. Front Immunol 2022; 13:934061. [PMID: 35990694 PMCID: PMC9389230 DOI: 10.3389/fimmu.2022.934061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 07/06/2022] [Indexed: 11/13/2022] Open
Abstract
Connective tissue growth factor (CTGF) has been recently acknowledged as an ideal biomarker in the early disease course, participating in the pathogenesis of pannus formation in rheumatoid arthritis (RA). However, existing approaches for the detection of or antagonist targeting CTGF are either lacking or unsatisfactory in the diagnosis and treatment of RA. To address this, we synthesized and screened high-affinity single-stranded DNA aptamers targeting CTGF through a protein-based SELEX procedure. The structurally optimized variant AptW2-1-39-PEG was characterized thoroughly for its high-affinity (KD 7.86 nM), sensitivity (minimum protein binding concentration, 2 ng), specificity (negative binding to other biomarkers of RA), and stability (viability-maintaining duration in human serum, 48 h) properties using various biochemical and biophysical assays. Importantly, we showed the antiproliferative and antiangiogenic activities of the aptamers obtained using functional experiments and further verified the therapeutic effect of the aptamers on joint injury and inflammatory response in collagen-induced arthritis (CIA) mice, thus advancing this study into actual therapeutic application. Furthermore, we revealed that the binding within AptW2-1-39-PEG/CTGF was mediated by the thrombospondin 1 (TSP1) domain of CTGF using robust bioinformatics tools together with immunofluorescence. In conclusion, our results revealed a novel aptamer that holds promise as an additive or alternative approach for CTGF-targeting diagnostics and therapeutics for RA.
Collapse
Affiliation(s)
- Gan Wu
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Biochemistry, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Can Liu
- Department of Biochemistry, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Ben Cao
- Department of Biochemistry, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Zelin Cao
- Department of Biochemistry, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Haige Zhai
- Department of Biochemistry, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Bin Liu
- Department of Biochemistry, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
| | - Shengwei Jin
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xinyu Yang
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, China
- *Correspondence: Jianguang Wang, ; Chen Lv, ; Xinyu Yang,
| | - Chen Lv
- Department of Orthopedics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
- *Correspondence: Jianguang Wang, ; Chen Lv, ; Xinyu Yang,
| | - Jianguang Wang
- Department of Anesthesia and Critical Care, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
- Department of Biochemistry, School of Basic Medical Sciences, Wenzhou Medical University, Wenzhou, China
- *Correspondence: Jianguang Wang, ; Chen Lv, ; Xinyu Yang,
| |
Collapse
|
3
|
Zhao R, Yin N, Ma L, Zhang J, Luo Y, Guo Z, Fa M, Yang D, Wang D, Yao X. Surface Plasmon Resonance (SPR) Determination of Adenosine Triphosphate (ATP) Using Silver (I) induced Configuration Changes of a Single Stranded DNA Probe with Cytosine (C). ANAL LETT 2022. [DOI: 10.1080/00032719.2022.2081335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Ruihuan Zhao
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Nan Yin
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Lixin Ma
- Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing, China
| | - Jie Zhang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Yangkai Luo
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Zhimin Guo
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Mengmei Fa
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Dingding Yang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Dengchao Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Xin Yao
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
4
|
Gao J, Ding Y, Yan K, Zhang J. A near-infrared light-driven photoelectrochemical aptasensing platform for adenosine triphosphate detection based on Yb-doped Bi 2S 3 nanorods. J Mater Chem B 2022; 10:3524-3530. [PMID: 35416227 DOI: 10.1039/d2tb00180b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Due to its capability of low spectral interference, high light stability, and minimal photodamage to biological species, near-infrared (NIR) light is advantageous in biosensing and biochemical analysis. This work developed a photoelectrochemical (PEC) aptasensor for adenosine triphosphate (ATP) detection using NIR light as the irradiation source. In order to utilize NIR light, we prepared Yb-doped Bi2S3 (Yb-Bi2S3) nanorods to act as photoelectric transducing materials. Due to the unfilled 4f orbitals of Yb which introduced the impurity level between the valence band and conduction band of Bi2S3, Yb-Bi2S3 exhibited admirable photo-to-current conversion efficiency under NIR light irradiation. The Yb-Bi2S3 modified electrode was employed to construct a NIR light-driven PEC sensor using an ATP-binding aptamer as the recognition element. When ATP was present, the photocurrent signal of the proposed aptasensor declined, owing to the formation of an ATP-aptamer complex which enhanced the steric hindrance of electron transfer on the electrode. Under optimal conditions, the sensor showed a sensitive response to ATP in the concentration range from 0.5 to 300 nmol L-1 with a detection limit of 0.1 nmol L-1. The proposed aptasensor exhibited high selectivity, good repeatability and desirable stability. Moreover, it was successfully applied to ATP detection in human serum samples.
Collapse
Affiliation(s)
- Jie Gao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China. .,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China
| | - Yifan Ding
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China.
| | - Kai Yan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China.
| | - Jingdong Zhang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road 1037, Wuhan, 430074, China.
| |
Collapse
|
5
|
Chen M, Li Y, Li P, Guo W, Yang Y, Wu X, Ye Y, Huang J. Ligation-dependent rolling circle amplification method for ATP determination with high selectivity and sensitivity. Analyst 2021; 146:6605-6614. [PMID: 34586110 DOI: 10.1039/d1an01115d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
It is highly demanded to develop methods for the reliable detection of ATP, which plays an extremely important role in clinical diagnosis, biomedical engineering, and food chemistry. However, the methods currently available for ATP sensing strongly rely on the utilization of expensive and sophisticated instruments or the use of ATP aptamers with mediocre sensitivity and selectivity. To circumvent these drawbacks, we herein propose an efficient method for ATP detection by integrating highly specific ATP-dependent ligation reaction with dual-stage signal amplification techniques executed by rolling circle amplification (RCA) and the subsequently fabricated DNAzymes ready for the catalytic cleavage and fluorescence signal generation from molecular beacons (MBs). The detection limit is down to 35 pM with a linear range from 0.05 nM to 200 nM. More importantly, the sensing strategy can effectively discriminate ATP from its analogues and the results from the spiked human serum albumin (HSA) samples further confirm the reliability for practical applications. Considering the high sensitivity and selectivity, wash-free and isothermal convenience, and the simplicity in probe design, the strategy reported herein paves a new avenue for the effective determination of ATP and other biomolecules in fundamental and applied research.
Collapse
Affiliation(s)
- Mingjian Chen
- NHC Key Laboratory of Carcinogenesis and Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Science, Central South University, Changsha 410078, P. R. China. .,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, the Third Xiangya Hospital, Central South University, Changsha 410013, P. R. China.,Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, P. R. China
| | - Yang Li
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, P. R. China.
| | - Peng Li
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, P. R. China.
| | - Wanni Guo
- NHC Key Laboratory of Carcinogenesis and Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Science, Central South University, Changsha 410078, P. R. China. .,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, the Third Xiangya Hospital, Central South University, Changsha 410013, P. R. China.,Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, P. R. China
| | - Yuxin Yang
- NHC Key Laboratory of Carcinogenesis and Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Science, Central South University, Changsha 410078, P. R. China. .,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, the Third Xiangya Hospital, Central South University, Changsha 410013, P. R. China.,Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, P. R. China
| | - Xu Wu
- NHC Key Laboratory of Carcinogenesis and Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute and School of Basic Medical Science, Central South University, Changsha 410078, P. R. China. .,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, the Third Xiangya Hospital, Central South University, Changsha 410013, P. R. China.,Hunan Key Laboratory of Translational Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, P. R. China
| | - Yu Ye
- Department of Radiology, Huangshi Central Hospital, Affiliated Hospital of Hubei Polytechnic University, Edong Health Care Group, Huangshi 435002, P. R. China. .,Hubei Key Laboratory of Kidney Disease Pathogenesis and Intervention, Huangshi 435002, P. R. China
| | - Jiahao Huang
- School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, P. R. China. .,Department of Critical Care Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, P. R. China
| |
Collapse
|
6
|
Baghdasaryan A, Bürgi T. Copper nanoclusters: designed synthesis, structural diversity, and multiplatform applications. NANOSCALE 2021; 13:6283-6340. [PMID: 33885518 DOI: 10.1039/d0nr08489a] [Citation(s) in RCA: 72] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Atomically precise metal nanoclusters (MNCs) have gained tremendous research interest in recent years due to their extraordinary properties. The molecular-like properties that originate from the quantized electronic states provide novel opportunities for the construction of unique nanomaterials possessing rich molecular-like absorption, luminescence, and magnetic properties. The field of monolayer-protected metal nanoclusters, especially copper, with well-defined molecular structures and compositions, is relatively new, about two to three decades old. Nevertheless, the massive progress in the field illustrates the importance of such nanoobjects as promising materials for various applications. In this respect, nanocluster-based catalysts have become very popular, showing high efficiencies and activities for the catalytic conversion of chemical compounds. Biomedical applications of clusters are an active research field aimed at finding better fluorescent contrast agents, therapeutic pharmaceuticals for the treatment and prevention of diseases, the early diagnosis of cancers and other potent diseases, especially at early stages. A huge library of structures and the compositions of copper nanoclusters (CuNCs) with atomic precisions have already been discovered during last few decades; however, there are many concerns to be addressed and questions to be answered. Hopefully, in future, with the combined efforts of material scientists, inorganic chemists, and computational scientists, a thorough understanding of the unique molecular-like properties of metal nanoclusters will be achieved. This, on the other hand, will allow the interdisciplinary researchers to design novel catalysts, biosensors, or therapeutic agents using highly structured, atomically precise, and stable CuNCs. Thus, we hope this review will guide the reader through the field of CuNCs, while discussing the main achievements and improvements, along with challenges and drawbacks that one needs to face and overcome.
Collapse
Affiliation(s)
- Ani Baghdasaryan
- Department of Physical Chemistry, University of Geneva, 30 Quai Ernest-Ansermet, 1211 Geneva 4, Switzerland.
| | | |
Collapse
|
7
|
N K R, Gorthi SS. dsDNA-templated fluorescent copper nanoparticles for the detection of lipopolysaccharides. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:186-191. [PMID: 33325462 DOI: 10.1039/d0ay01906b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The introduction of lipopolysaccharides (LPS) or endotoxins that originate from Gram-negative bacteria into the human blood stream induces a severe immune response that can lead to septic shock, and even death. Hence, the accurate detection of LPS is of great importance in the medical and pharmaceutical sectors. This paper proposes a novel label-free fluorescence assay for the detection of LPS utilizing aptamers and the interference synthesis of dsDNA-templated copper nanoparticles. The assay can be performed at room temperature and does not require expensive reagents. The proposed assay has a limit of detection of 0.95 ng ml-1 of LPS, and the fluorescence emission from the copper nanoparticles was found to vary linearly with the concentration of LPS over a wide range (1 to 105 ng ml-1) with R2 = 0.9877.
Collapse
Affiliation(s)
- Radhika N K
- Department of Instrumentation and Applied Physics, Indian Institute of Science Bangalore, India.
| | - Sai Siva Gorthi
- Department of Instrumentation and Applied Physics, Indian Institute of Science Bangalore, India.
| |
Collapse
|
8
|
A lable-free SPR biosensor based on one peptide sequence with three recognition sites for O-GlcNAc transferase detection. Talanta 2021; 222:121664. [PMID: 33167279 DOI: 10.1016/j.talanta.2020.121664] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 09/07/2020] [Accepted: 09/11/2020] [Indexed: 12/24/2022]
Abstract
Abnormal O-linked N-acetylglucosamine (O-GlcNAc) concentrations have been associated with many diseases, but the lack of accurate detection method limited O-GlcNAc to be used as a biomarker in clinical diagnosis. Then O-GlcNAc transferase (OGT) has drawn researchers' attention as it closed related to the level of O-GlcNAc and be considered to be a promising new target for diseases diagnosis. Nevertheless, the existing OGT detection methods are either need labeling or the sensitity can not meet the needs of clinic testing. Herein, a label-free and sensitive SPR biosensor was developed for accurate detection of OGT based on a multi-functional peptide. The designed peptide contains three recognition sites, one is the cleavage site of protease K, one is the O-GlcNAcylated site by OGT, and another is six histidine which be used as the signal report probe to recognize Ni2+. The immobilized peptide would be cleavaged by proteinase K, then the His-tag residue part will leave the surface of Au film, resulting less His-tag could bind to Ni2+ and a small SPR signal would be record. If the peptide is O-GlcNAcylated by OGT, the cleaving reaction would be limited due to the adjacent site of O-GlcNAcylation. Then more His-tag can be left on the Au film and a bigger SPR signal could be record, this signal is associated with the concentration of OGT. Utilizing the change of the peptide configuration as a signal report probe for OGT detection not only avoids labeling of peptide, but also makes the method more sensitive. The determination linear range of OGT is from 2.00 × 10-13 to 5.00 × 10-8 M with a detection limit of 1.19 × 10-13 M, and the separation of two enzyme reactions ensured the high selectivity of the method. Finally, the sensing system was successfully used for OGT detection in blood samples with satisfied recovery. In summary, the label-free SPR platform for accurate detection of OGT in real samples is helpful to promote OGT serve as a biomarker for early clinical diagnosis of O-GlcNAc related diseases.
Collapse
|
9
|
Beyond native deoxyribonucleic acid, templating fluorescent nanomaterials for bioanalytical applications: A review. Anal Chim Acta 2020; 1105:11-27. [DOI: 10.1016/j.aca.2020.01.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 01/10/2020] [Accepted: 01/10/2020] [Indexed: 12/16/2022]
|
10
|
Recent progress in copper nanocluster-based fluorescent probing: a review. Mikrochim Acta 2019; 186:670. [PMID: 31489488 DOI: 10.1007/s00604-019-3747-4] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Accepted: 08/10/2019] [Indexed: 10/26/2022]
Abstract
Copper nanoclusters (CuNCs) are an attractive alternative to other metal nanoclusters. The synthesis of CuNCs is highly efficient and fast, with low-cost and without any complicated manipulation. Because of their tunable fluorescence and low toxicity, CuNCs have been highly exploited for biochemical sensing. This review (with 172 refs.) summarizes the progress that has been made in the field in the past years. Following an introduction into the fundamentals of CuNCs, the review first focuses on synthetic methods and the fluorescence properties of CuNCs (with subsections on the use of proteins, peptides, DNA and other molecules as templates). This is followed by a section on the use of CuNCs in fluorometric assays, with subsections on the detection of small molecules, proteins, nucleic acids, various other biomolecules including drugs, and of pH values. A further large chapter summarizes the work related to environmental analyses, specifically on determination of metal ions, anions and pollutants. Graphical abstract Schematic representation of the synthesis and potential applications of copper nanocluster (CuNCs) in biochemical analysis, emphatically reflected in some vital areas such as small molecule analysis, biomacromolecule monitoring, cell imaging, ions detection, toxic pollutant, etc.
Collapse
|
11
|
Ratajczak K, Lukasiak A, Grel H, Dworakowska B, Jakiela S, Stobiecka M. Monitoring of dynamic ATP level changes by oligomycin-modulated ATP synthase inhibition in SW480 cancer cells using fluorescent "On-Off" switching DNA aptamer. Anal Bioanal Chem 2019; 411:6899-6911. [PMID: 31407049 PMCID: PMC6834760 DOI: 10.1007/s00216-019-02061-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/22/2019] [Accepted: 07/31/2019] [Indexed: 12/18/2022]
Abstract
Adenosine triphosphate (ATP) is the main energy source in cells and an important biomolecule participating in cellular reactions in living organisms. Since the ATP level changes dynamically reflecting the development of a debilitating disease or carcinogenesis, we have focused in this work on monitoring of the oligomycin (OMC)-modulated ATP synthase inhibition using a fluorescent-switching DNA aptamer designed for the detection of ATP (Apt(ATP)), as the model for studies of dynamic ATP level variation. The behavior of the ATP aptamer has been characterized using fluorescence spectroscopy. The Intramolecular fluorescence resonance energy transfer (iFRET) operates in the proposed aptamer from the FAM dye moiety to guanines of the aptamer G-quadruplex when the target ATP is present and binds to the aptamer changing its conformation. The iFRET process enables the detection of ATP down to the limit of detection, LOD = 17 μM, without resorting to any extra chemi-amplification schemes. The selectivity coefficients for relevant interferent triphosphates (UTP, GTP, and CTP) are low for the same concentration as that of ATP. We have demonstrated an efficient transfection of intact cells and OMC-treated SW480 colon cancer cells with Apt(ATP), using microscopic imaging, iFRET measurements, and cell viability testing with MTT method. The applicability of the switching DNA aptamer for the analysis of real samples, obtained by lysis of SW480 cells, was also tested. The proposed Apt(ATP) may be considered as a viable candidate for utilization in measurements of dynamic ATP level modulation in cells in different stages of cancer development and testing of new drugs in pharmacological studies. Graphical abstract ![]()
Collapse
Affiliation(s)
- Katarzyna Ratajczak
- Department of Biophysics, Warsaw University of Life Sciences (SGGW), 159 Nowoursynowska Street, 02776, Warsaw, Poland
| | - Agnieszka Lukasiak
- Department of Biophysics, Warsaw University of Life Sciences (SGGW), 159 Nowoursynowska Street, 02776, Warsaw, Poland
| | - Hubert Grel
- Department of Biophysics, Warsaw University of Life Sciences (SGGW), 159 Nowoursynowska Street, 02776, Warsaw, Poland
| | - Beata Dworakowska
- Department of Biophysics, Warsaw University of Life Sciences (SGGW), 159 Nowoursynowska Street, 02776, Warsaw, Poland
| | - Slawomir Jakiela
- Department of Biophysics, Warsaw University of Life Sciences (SGGW), 159 Nowoursynowska Street, 02776, Warsaw, Poland.
| | - Magdalena Stobiecka
- Department of Biophysics, Warsaw University of Life Sciences (SGGW), 159 Nowoursynowska Street, 02776, Warsaw, Poland.
| |
Collapse
|
12
|
Gao S, Hu W, Zheng X, Cai S, Wu J. Functionalized aptamer with an antiparallel G-quadruplex: Structural remodeling, recognition mechanism, and diagnostic applications targeting CTGF. Biosens Bioelectron 2019; 142:111475. [PMID: 31288216 DOI: 10.1016/j.bios.2019.111475] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 06/01/2019] [Accepted: 06/24/2019] [Indexed: 01/01/2023]
Abstract
Connective tissue growth factor (CTGF), a widely used biomarker, is involved in many diseases, such as diabetic retinopathy, diabetic nephropathy, and rheumatoid arthritis, and it is often over-expressed in human malignant tumors. Therefore, sensitive, specific and efficient detection methods for CTGF are needed for the early diagnosis and assessment of prognosis. In this study, an aptamer, APT1, that specifically binds to CTGF was obtained by SELEX technology. Circular dichroism spectroscopy indicated that APT1 formed interconvertible parallel and antiparallel G-quadruplexes. Mutation and truncation strategies optimized APT1 and improved its functions, yielding APT1M6T, which folded into an antiparallel G-quadruplex with higher targeting affinity. A stable APT1M6T-CTGF complex model was established by molecular simulation, which helped elucidate the molecular recognition mechanism of APT1M6T and CTGF and also provided experimental guidance for rational site-directed modification of APT1M6T. A locked nucleic acid sequence was then integrated into APT1M6T to generate APT1M6TL, which had higher structural stability. A BLI-based enzyme-linked aptamer sandwich assay (BLI-ELASA) was successfully developed. The method exhibited a broad detection range from 0.05 to 50 nM with a low detection limit of 0.02 nM. The method showed high selectivity, reproducibility, and stability for analysis of CTGF in spiked serum and urine samples. This developed BLI-ELASA is promising and enables real-time, sensitive and rapid detection of the disease-specific biomarker CTGF.
Collapse
Affiliation(s)
- Shunxiang Gao
- Eye Institute, Eye and ENT Hospital, College of Medicine, Fudan University, Shanghai, China; Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality, Shanghai, China; Key Laboratory of Myopia (Fudan University), Chinese Academy of Medical Sciences, National Health Commission, Shanghai, China
| | - Wei Hu
- Chengdu FenDi Technology Co., Ltd., Chengdu, China
| | - Xin Zheng
- Department of Clinical Laboratory, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Sheng Cai
- Institute of Drug Metabolism and Pharmaceutical Analysis, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, Zhejiang University, Hangzhou, China.
| | - Jihong Wu
- Eye Institute, Eye and ENT Hospital, College of Medicine, Fudan University, Shanghai, China; Shanghai Key Laboratory of Visual Impairment and Restoration, Science and Technology Commission of Shanghai Municipality, Shanghai, China; Key Laboratory of Myopia (Fudan University), Chinese Academy of Medical Sciences, National Health Commission, Shanghai, China.
| |
Collapse
|
13
|
Yang L, Liu X, Li L, Zhang S, Zheng H, Tang Y, Ju H. A visible light photoelectrochemical sandwich aptasensor for adenosine triphosphate based on MgIn 2S 4-TiO 2 nanoarray heterojunction. Biosens Bioelectron 2019; 142:111487. [PMID: 31276907 DOI: 10.1016/j.bios.2019.111487] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/16/2019] [Accepted: 06/29/2019] [Indexed: 12/24/2022]
Abstract
This work designed a MgIn2S4-TiONA heterojunction by growing MgIn2S4 nanoplates on TiO2 nanowire array (TiONA) for preparation of visible light photoelectrochemical (PEC) sensing platform. The heterojunction exhibited strong absorption of visible light, large surface area and high loading of biomolecules, leading to high sensing sensitivity. Using adenosine triphosphate (ATP), a marker of cell vitality, as the target model, a PEC sandwich aptasensor was constructed by immobilizing capture DNA1 on MgIn2S4 surface. In the presence of ATP and signal DNA2 with terminal ferrocene as the electron donor, a sandwiched DNA1-ATP-DNA2 complex could be formed on the PEC aptasensor. The aptasensor showed excellent performance with a wide linear range from 50 fM to 100 nM and a detection limit of 20 fM. The sensing performance including specificity, reproducibility, stability and practical use were also evaluated, showing promising application of the MgIn2S4-TiONA heterojunction in PEC biosensing.
Collapse
Affiliation(s)
- Liwei Yang
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, PR China
| | - Xiaoqiang Liu
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, PR China.
| | - Lele Li
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, PR China
| | - Si Zhang
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, PR China
| | - Hejie Zheng
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, PR China
| | - Yunfei Tang
- Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, PR China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, PR China.
| |
Collapse
|
14
|
Qing Z, Bai A, Xing S, Zou Z, He X, Wang K, Yang R. Progress in biosensor based on DNA-templated copper nanoparticles. Biosens Bioelectron 2019; 137:96-109. [PMID: 31085403 DOI: 10.1016/j.bios.2019.05.014] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 05/06/2019] [Indexed: 02/01/2023]
Abstract
During the last decades, by virtue of their unique physicochemical properties and potential application in microelectronics, biosensing and biomedicine, metal nanomaterials (MNs) have attracted great research interest and been highly developed. Deoxyribonucleic acid (DNA) is a particularly interesting ligand for templating bottom-up nanopreparation, by virtue of its excellent properties including nanosized geometry structure, programmable and artificial synthesis, DNA-metal ion interaction and powerful molecular recognition. DNA-templated copper nanoparticles (DNA-CuNPs) has been developed in recent years. Because of its advantages including simple and rapid preparation, high efficiency, MegaStokes shifting and low biological toxicity, DNA-CuNPs has been highly exploited for biochemical sensing from 2010, especially as a label-free detection manner, holding advantages in multiple analytical technologies including fluorescence, electrochemistry, surface plasmon resonance, inductively coupled plasma mass spectrometry and surface enhanced Raman spectroscopy. This review comprehensively tracks the preparation of DNA-CuNPs and its application in biosensing, and highlights the potential development and challenges regarding this field, aiming to promote the advance of this fertile research area.
Collapse
Affiliation(s)
- Zhihe Qing
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China.
| | - Ailing Bai
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China
| | - Shuohui Xing
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China
| | - Zhen Zou
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, 410082, People's Republic of China
| | - Xiaoxiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, 410082, People's Republic of China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, 410082, People's Republic of China
| | - Ronghua Yang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Hunan Provincial Engineering Research Center for Food Processing of Aquatic Biotic Resources, School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, 410114, PR China; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha, 410082, People's Republic of China.
| |
Collapse
|
15
|
Rapid synthesis of Au/Ag bimetallic nanoclusters with highly biochemical stability and its applications for temperature and ratiometric pH sensing. Anal Chim Acta 2019; 1070:88-96. [PMID: 31103171 DOI: 10.1016/j.aca.2019.04.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 04/09/2019] [Accepted: 04/12/2019] [Indexed: 11/22/2022]
Abstract
Herein, we developed a simple and rapid strategy to synthesize gold/silver bimetallic nanoclusters (Au/Ag NCs) with highly biochemical stability by a one-pot route. The Au/Ag NCs were obtained via a chemical reduction procedure in alkaline aqueous solution at 75 °C within only 20 min by employing bovine serum albumin (BSA) as both ligand and reductant. The as-obtained Au/Ag NCs displayed bright orange fluorescence with an emission peak located at 570 nm and temperature-dependent fluorescence property, which were utilized as fluorescent thermometer directly. More intriguingly, the Au/Ag NCs were very stable against various pH values, ions, biothiols, H2O2, fetal bovine serum (FBS), RPMI 1640 medium and amino acids. Taking advantage of the excellent biochemical stability, a ratiometric fluorescence biosensor, fluorescein-5-isothiocyanate (FITC)-Au/Ag NCs, was constructed for pH sensing based on the incorporation of FITC into the Au/Ag NCs. Furthermore, the ratiometric pH sensor was also successfully applied on the model of HeLa cells.
Collapse
|
16
|
Xia X, Wang Y, Yang H, Dong Y, Zhang K, Lu Y, Deng R, He Q. Enzyme-free amplified and ultrafast detection of aflatoxin B 1 using dual-terminal proximity aptamer probes. Food Chem 2019; 283:32-38. [PMID: 30722878 DOI: 10.1016/j.foodchem.2018.12.117] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/23/2018] [Accepted: 12/29/2018] [Indexed: 02/05/2023]
Abstract
Aptamer probes provide an opportunity for achieving rapid and on-site detection of food contaminants. Herein, we proposed a general design strategy for aptamer probes enabling enzyme-free amplified, ultrafast and one-test tube homogeneous detection of aflatoxin B1 (AFB1). The key feature of the aptamer probe is designed with dual-terminal proximity structures, allowing the binding of one molecule to light up two fluorophores, leading to enzyme-free amplification and a remarkable improvement of signal to background ratio and sensitivity for AFB1 detection. This aptamer probe could accommodate quick response to AFB1, and the detection process could be finished within 1 min, ranking one of the quickest assays for AFB1. AFB1 detection of broad bean paste and peanut oil conferred satisfactory recoveries ranging from 90.3% to 114.8%. Contributed to the generality and simplicity of the design strategy, this structure-switching probe could potentially act as a general platform of on-site detection for food safety.
Collapse
Affiliation(s)
- Xuhan Xia
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Yuxi Wang
- Collaborative Innovation Center for Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 61004, China
| | - Hao Yang
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Yi Dong
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Kaixiang Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Yunhao Lu
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| | - Ruijie Deng
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China.
| | - Qiang He
- College of Light Industry, Textile and Food Engineering, Healthy Food Evaluation Research Center and Key Laboratory of Food Science and Technology of Ministry of Education of Sichuan Province, Sichuan University, Chengdu 610065, China
| |
Collapse
|
17
|
Wang M, Chen J, Su D, Wang G, Su X. Split aptamer based sensing platform for adenosine deaminase detection by fluorescence resonance energy transfer. Talanta 2019; 198:1-7. [PMID: 30876536 DOI: 10.1016/j.talanta.2019.01.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 01/08/2019] [Accepted: 01/09/2019] [Indexed: 11/27/2022]
Abstract
In this paper, a split aptamer based fluorescence resonance energy transfer (FRET) platform was constructed for the determination of adenosine deaminase (ADA) activity by using gold nanoclusters (AuNCs) and gold nanoparticles (AuNPs). A single adenosine triphosphate (ATP) aptamer was split into two fragments (referred to as P1 and P2). P1 was covalently attached to the AuNCs at the 5' end (P1-AuNCs), and P2 was labeled with AuNPs at the 3' end (P2-AuNPs). In the presence of ATP, ATP bound with the two fragments with high affinity to link P1-AuNCs and P2-AuNPs together, thus the fluorescence of P1-AuNCs was quenched via FRET from P1-AuNCs to P2-AuNPs. With the addition of ADA, ATP was transformed into inosine triphosphate (ITP), and then P1 and P2 were released to cause the fluorescence recovery of the system. So a split aptamer based FRET platform for ADA detection can be established via the fluorescence intensity change of the system. This platform showed a good linear relationship between the fluorescence intensity and ADA concentration in the range of 2-120 U L-1, and the limit of detection (LOD) was 0.72 U L-1. Moreover, the detection of ATP in human serum sample demonstrated the accuracy and applicability of the method for ADA detection in real sample.
Collapse
Affiliation(s)
- Mengke Wang
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Junyang Chen
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Dandan Su
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China
| | - Guannan Wang
- Department of Chemistry& The Key Laboratory for Medical Tissue Engineering of Liaoning Province, Jinzhou Medical University, Jinzhou 121001, PR China.
| | - Xingguang Su
- Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China.
| |
Collapse
|
18
|
Liu R, Wang C, Hu J, Su Y, Lv Y. DNA-templated copper nanoparticles: Versatile platform for label-free bioassays. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.06.003] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
19
|
Chen M, Yeasmin Khusbu F, Ma C, Wu K, Zhao H, Chen H, Wang K. A sensitive detection method of carcinoembryonic antigen based on dsDNA-templated copper nanoparticles. NEW J CHEM 2018. [DOI: 10.1039/c8nj02774a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A label-free fluorescence assay has been developed for the detection of carcinoembryonic antigen based on dsDNA-templated copper nanoparticles.
Collapse
Affiliation(s)
- Mingjian Chen
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | | | - Changbei Ma
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | - Kefeng Wu
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | - Han Zhao
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | - Hanchun Chen
- School of Life Sciences
- Central South University
- Changsha 410013
- China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410081
- China
| |
Collapse
|
20
|
A rapid method for the detection of humic acid based on the poly(thymine)-templated copper nanoparticles. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2017.09.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
21
|
Chen M, Xiang X, Wu K, He H, Chen H, Ma C. A Novel Detection Method of Human Serum Albumin Based on the Poly(Thymine)-Templated Copper Nanoparticles. SENSORS 2017; 17:s17112684. [PMID: 29160831 PMCID: PMC5712895 DOI: 10.3390/s17112684] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 11/13/2017] [Accepted: 11/14/2017] [Indexed: 12/19/2022]
Abstract
In this work, we developed a facile fluorescence method for quantitative detection of human serum albumin (HSA) based on the inhibition of poly(thymine) (poly T)-templated copper nanoparticles (CuNPs) in the presence of HSA. Under normal circumstances, poly T-templated CuNPs can display strong fluorescence with excitation/emission peaks at 340/610 nm. However, in the presence of HSA, it will absorb cupric ion, which will prevent the formation of CuNPs. As a result, the fluorescence intensity will become obviously lower in the presence of HSA. The analyte HSA concentration had a proportional linear relationship with the fluorescence intensity of CuNPs. The detection limit for HSA was 8.2 × 10−8 mol·L−1. Furthermore, it was also successfully employed to determine HSA in biological samples. Thus, this method has potential applications in point-of-care medical diagnosis and biomedical research.
Collapse
Affiliation(s)
- Mingjian Chen
- School of Life Sciences, Central South University, Changsha 410013, China.
| | - Xinying Xiang
- School of Life Sciences, Central South University, Changsha 410013, China.
| | - Kefeng Wu
- School of Life Sciences, Central South University, Changsha 410013, China.
| | - Hailun He
- School of Life Sciences, Central South University, Changsha 410013, China.
| | - Hanchun Chen
- School of Life Sciences, Central South University, Changsha 410013, China.
| | - Changbei Ma
- School of Life Sciences, Central South University, Changsha 410013, China.
| |
Collapse
|
22
|
Wang G, Su X, Xu Q, Xu G, Lin J, Luo X. Antifouling aptasensor for the detection of adenosine triphosphate in biological media based on mixed self-assembled aptamer and zwitterionic peptide. Biosens Bioelectron 2017; 101:129-134. [PMID: 29055195 DOI: 10.1016/j.bios.2017.10.024] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/02/2017] [Accepted: 10/12/2017] [Indexed: 02/04/2023]
Abstract
Direct detection of targets in complex biological media with conventional biosensors is an enormous challenge due to the nonspecific adsorption and severe biofouling. In this work, a facile strategy for sensitive and low fouling detection of adenosine triphosphate (ATP) is developed through the construction of a mixed self-assembled biosensing interface, which was composed of zwitterionic peptide (antifouling material) and ATP aptamer (bio-recognition element). The peptide and aptamer (both containing thiol groups) were simultaneously self-assembled onto gold electrode surface electrodeposited with gold nanoparticles. The developed aptasensor possessed high selectivity and sensitivity for ATP, and it showed a wide linear response range towards ATP from 0.1pM to 5nM. Owing to the presence of peptide with excellent antifouling property in the biosensing interface, the aptasensor can detect ATP in complex biological media with remarkably reduced biofouling or nonspecific adsorption effect. Moreover, it can directly detect ATP in 1% human whole blood without suffering from any significant interference, indicating its great potential for practical assaying of ATP in biological samples.
Collapse
Affiliation(s)
- Guixiang Wang
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China; College of Chemistry and Chemical Engineering, Taishan University, Taian 271021, China
| | - Xiaoli Su
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Qingjun Xu
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Guiyun Xu
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jiehua Lin
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xiliang Luo
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China.
| |
Collapse
|
23
|
Wang G, Xu Q, Liu L, Su X, Lin J, Xu G, Luo X. Mixed Self-Assembly of Polyethylene Glycol and Aptamer on Polydopamine Surface for Highly Sensitive and Low-Fouling Detection of Adenosine Triphosphate in Complex Media. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31153-31160. [PMID: 28831806 DOI: 10.1021/acsami.7b09529] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Detection of disease biomarkers within complex biological media is a substantial outstanding challenge because of severe biofouling and nonspecific adsorptions. Herein, a reliable strategy for sensitive and low-fouling detection of a biomarker, adenosine triphosphate (ATP) in biological samples was developed through the formation of a mixed self-assembled sensing interface, which was constructed by simultaneously self-assembling polyethylene glycol (PEG) and ATP aptamer onto the self-polymerized polydopamine-modified electrode surface. The developed aptasensor exhibited high selectivity and sensitivity toward the detection of ATP, and the linear range was 0.1-1000 pM, with a detection limit down to 0.1 pM. Moreover, owing to the presence of PEG within the sensing interface, the aptasensor was capable of sensing ATP in complex biological media such as human plasma with significantly reduced nonspecific adsorption effect. Assaying ATP in real biological samples including breast cancer cell lysates further proved the feasibility of this biosensor for practical application.
Collapse
Affiliation(s)
- Guixiang Wang
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao 266042, China
- College of Chemistry and Chemical Engineering, Taishan University , Taian 271021, China
| | - Qingjun Xu
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao 266042, China
| | - Lei Liu
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao 266042, China
| | - Xiaoli Su
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao 266042, China
| | - Jiehua Lin
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao 266042, China
| | - Guiyun Xu
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao 266042, China
| | - Xiliang Luo
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology , Qingdao 266042, China
| |
Collapse
|
24
|
Zu F, Yan F, Bai Z, Xu J, Wang Y, Huang Y, Zhou X. The quenching of the fluorescence of carbon dots: A review on mechanisms and applications. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2318-9] [Citation(s) in RCA: 464] [Impact Index Per Article: 66.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
25
|
Luo L, Xu F, Shi H, He X, Qing T, Lei Y, Tang J, He D, Wang K. Label-free and sensitive assay for deoxyribonuclease I activity based on enzymatically-polymerized superlong poly(thymine)-hosted fluorescent copper nanoparticles. Talanta 2017; 169:57-63. [PMID: 28411822 DOI: 10.1016/j.talanta.2017.03.047] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 03/02/2017] [Accepted: 03/16/2017] [Indexed: 02/01/2023]
Abstract
Deoxyribonuclease I (DNase I) is an important physiological indicator and diagnostic biomarker, but traditional methods for assessing its activity are time-consuming, laborious, and usually radioactive. Herein, by effectively combining the special functions of DNase I and terminal deoxynucleotidyl transferase (TdT), a simple, green, cost-effective, label-free and ultrasensitive assay for DNase I activity has been constructed based on superlong poly(thymine)-hosted copper nanoparticles (poly T-CuNPs). In this strategy, a 3'-phosphorylated DNA primer is designed to block TdT polymerization. After addition of DNase I, the primer could be digested to release 3'-hydroxylated fragments, which could further be tailed by TdT in dTTP pool with superlong poly T ssDNA for CuNPs formation. Fluorescence measurements and gel electrophoresis demonstrated its feasibility for DNase I analysis. The results indicated that with a size of 3-4nm, the CuNPs templated by TdT-polymerized superlong poly T (>500 mer) had several advantages such as short synthetic time (<5min), large Stokes shift (~275nm) and intense red fluorescence emission. Under the optimal conditions, quantitative detection of DNase I was realized, showing a good linear correlation between 0.02 and 2.0U/mL (R2=0.9928) and a detection limit of 0.02U/mL. By selecting six other nucleases or proteins as controls, an excellent specificity was also verified. Then, the strategy was successfully applied to detect DNase I in diluted serum with a standard addition method, thus implying its reliability and practicability for biological samples. The proposed strategy might be promising as a sensing platform for related molecular biology and disease studies.
Collapse
Affiliation(s)
- Lan Luo
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, PR China
| | - Fengzhou Xu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, PR China
| | - Hui Shi
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, PR China.
| | - Xiaoxiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, PR China
| | - Taiping Qing
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, PR China
| | - Yanli Lei
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, PR China
| | - Jinlu Tang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, PR China
| | - Dinggeng He
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, PR China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Changsha 410082, PR China.
| |
Collapse
|
26
|
Liu H, Ma C, Ning F, Chen H, He H, Wang K, Wang J. A facile label-free G-quadruplex based fluorescent aptasensor method for rapid detection of ATP. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 175:164-167. [PMID: 28038373 DOI: 10.1016/j.saa.2016.12.033] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/15/2016] [Accepted: 12/20/2016] [Indexed: 06/06/2023]
Abstract
The present work demonstrates a simple, rapid and label-free ATP detection method using a fluorescent aptasensor that is based on G-quadruplex formation. In the absence of ATP, the Thioflavin T (ThT) dye binds to the G-rich ATP aptamer and forms an ATP aptamer/ThT G-quadruplex complex, which results in high fluorescence intensity. Upon addition of ATP, the ATP aptamer/ThT complex will be replaced by the formation of an ATP aptamer/ATP complex. During this process, separation of the ThT dye from the ATP aptamer/ThT complex decreases the fluorescence intensity of the reaction mixture dramatically. This fluorescence aptasensor is highly sensitive and rapid, with a detection limit of 18nM and a total reaction time of only 10min. Furthermore, this method is cost-effective and simple, removing the requirement for labeling the detection reagents with a fluorophore-quencher pair.
Collapse
Affiliation(s)
- Haisheng Liu
- State Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha 410013, China
| | - Changbei Ma
- State Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha 410013, China.
| | - Feng Ning
- State Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha 410013, China
| | - Hanchun Chen
- State Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha 410013, China
| | - Hailun He
- State Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha 410013, China
| | - Kemin Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410081, China
| | - Jun Wang
- State Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha 410013, China
| |
Collapse
|