1
|
Zhao NN, Wang Q, Yang DM, Li DL, Han Y, Zhao S, Zou X, Zhang CY. Elongation and Ligation-Mediated Differential Coding for Label-Free and Locus-Specific Analysis of 8-Oxo-7,8-dihydroguanine in DNA. Anal Chem 2024; 96:5323-5330. [PMID: 38501982 DOI: 10.1021/acs.analchem.4c00387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Oxidative DNA damage is closely associated with the occurrence of numerous human diseases and cancers. 8-Oxo-7,8-dihydroguanine (8-oxoG) is the most prevalent form of DNA damage, and it has become not only an oxidative stress biomarker but also a new epigenetic-like biomarker. However, few approaches are available for the locus-specific detection of 8-oxoG because of the low abundance of 8-oxoG damage in DNA and the limited sensitivity of existing assays. Herein, we demonstrate the elongation and ligation-mediated differential coding for label-free and locus-specific analysis of 8-oxoG in DNA. This assay is very simple without the involvement of any specific labeled probes, complicated steps, and large sample consumption. The utilization of Bsu DNA polymerase can specifically initiate a single-base extension reaction to incorporate dATP into the opposite position of 8-oxoG, endowing this assay with excellent selectivity. The introduction of cascade amplification reaction significantly enhances the sensitivity. The proposed method can monitor 8-oxoG with a limit of detection of 8.21 × 10-19 M (0.82 aM), and it can identify as low as 0.001% 8-oxoG damage from a complex mixture with excessive undamaged DNAs. This method can be further applied to measure 8-oxoG levels in the genomic DNA of human cells under diverse oxidative stress, holding prospect potential in the dynamic monitoring of critical 8-oxoG sites, early clinical diagnosis, and gene damage-related biomedical research.
Collapse
Affiliation(s)
- Ning-Ning Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Qian Wang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Dong-Ming Yang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Dong-Ling Li
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yun Han
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Shulin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Xiaoran Zou
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Chun-Yang Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| |
Collapse
|
2
|
Wang LJ, Liu WJ, Wang LY, Ho YP, Han Y, Li DL, Zhang CY. Construction of an Enzymatically Controlled DNA Nanomachine for One-Step Imaging of Telomerase in Living Cells. Anal Chem 2024; 96:4647-4656. [PMID: 38441540 DOI: 10.1021/acs.analchem.3c05795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Telomerase is a basic reverse transcriptase that maintains the telomere length in cells, and accurate and specific sensing of telomerase in living cells is critical for medical diagnostics and disease therapeutics. Herein, we demonstrate for the first time the construction of an enzymatically controlled DNA nanomachine with endogenous apurinic/apyrimidinic endonuclease 1 (APE1) as a driving force for one-step imaging of telomerase in living cells. The DNA nanomachine is designed by rational engineering of substrate probes and reporter probes embedded with an enzyme-activatable site (i.e., AP site) and their subsequent assembly on a gold nanoparticle (AuNP). Upon recognition and cleavage of the AP site in the substrate probe by APE1, the loop of the substrate probe unfolds, exposing telomeric primer (TP) with the 3'-OH end. Subsequently, the TP is elongated by telomerase at the 3'-OH end to generate a long telomeric product. The resultant telomeric product acts as a swing arm that can hybridize with a reporter probe to initiate the APE1-powered walking reaction, ultimately generating a significantly enhanced fluorescence signal. Notably, endogenous APE1 is used as the driving force of the DNA nanomachine, avoiding the introduction of exogenous auxiliary cofactors into the cellular microenvironment. Owing to the high kinetics and high amplification efficiency of the APE1-powered DNA nanomachine, this strategy enables one-step sensitive sensing of telomerase in vitro and in vivo. It can successfully discriminate telomerase activity between cancer cells and normal cells, screen telomerase inhibitors, and monitor the variations of telomerase activity in living cells, offering a prospective platform for molecular diagnostics and drug discovery.
Collapse
Affiliation(s)
- Li-Juan Wang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Wen-Jing Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Lu-Yao Wang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan 250014, China
| | - Yi-Ping Ho
- Department of Biomedical Engineering, The Chinese University of Hong Kong, Shatin, Hong Kong SAR 999077, China
| | - Yun Han
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Dong-Ling Li
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Chun-Yang Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| |
Collapse
|
3
|
Yang R, Hu J, Zhang L, Liu X, Huang Y, Zhang L, Fan Q. Recent advances in optical biosensing and imaging of telomerase activity and relevant signal amplification strategies. Analyst 2024; 149:290-303. [PMID: 38099470 DOI: 10.1039/d3an01900d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Telomerase as a new valuable biomarker for early diagnosis and prognosis evaluation of cancer has attracted much interest in the field of biosensors, cell imaging, and drug screening. In this review, we mainly focus on different optical techniques and various signal amplification strategies for telomerase activity determination. Fluorometric, colorimetry, chemiluminescence, surface-enhanced Raman scattering (SERS), and dual-mode techniques for telomerase sensing and imaging are summarized. Signal amplification strategies include two categories: one is nucleic acid-based amplification, such as rolling circle amplification (RCA), the hybridization chain reaction (HCR), and catalytic hairpin assembly (CHA); the other is nanomaterial-assisted amplification, including metal nanoclusters, quantum dots, transition metal compounds, graphene oxide, and DNA nanomaterials. Challenges and prospects are also discussed to provide new insights for future development of multifunctional strategies and techniques for in situ and in vivo analysis of biomarkers for accurate cancer diagnosis.
Collapse
Affiliation(s)
- Ruining Yang
- The State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Junbo Hu
- The State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Longsheng Zhang
- The State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Xingfen Liu
- The State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Yanqin Huang
- The State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Lei Zhang
- The State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| | - Quli Fan
- The State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.
| |
Collapse
|
4
|
Zhou YJ, Zhang J, Cao DX, Tang AN, Kong DM. Telomerase-activated Au@DNA nanomachine for targeted chemo-photodynamic synergistic therapy. RSC Med Chem 2023; 14:2268-2276. [PMID: 37974961 PMCID: PMC10650438 DOI: 10.1039/d3md00379e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 08/30/2023] [Indexed: 11/19/2023] Open
Abstract
We successfully designed a smart activatable nanomachine for cancer synergistic therapy. Photodynamic therapy (PDT) and chemotherapy can be activated by intracellular telomerase while anti-cancer drugs can be effectively transported into tumour cells. An Sgc8 aptamer was designed, which can specifically distinguish tumour cells from normal cells and perform targeted therapy. The nanomachine entered the tumour cells by recognising PTK7, which is overexpressed on the surface of cancer cells. Then, the "switch" of the system was opened by TP sequence extension under telomerase stimulus. So, the chemotherapeutic drug DOX was released to achieve the chemotherapy, and the Ce6 labelled Sgc8-apt was released to activate the PDT. It was found that if no telomerase existed, the Ce6 would always be in an "off" state and could not activate the PDT. Telomerase is the key to controlling the activation of the PDT, which effectively reduces the damage photosensitisers cause to normal cells. Using in vitro and in vivo experiments, the nanomachine shows an excellent performance in targeted synergistic therapy, which is expected to be utilised in the future.
Collapse
Affiliation(s)
- Yun-Jie Zhou
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry, Nankai University Tianjin 300071 PR China
| | - Jing Zhang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry, Nankai University Tianjin 300071 PR China
| | - Dong-Xiao Cao
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry, Nankai University Tianjin 300071 PR China
| | - An-Na Tang
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry, Nankai University Tianjin 300071 PR China
| | - De-Ming Kong
- State Key Laboratory of Medicinal Chemical Biology, Tianjin Key Laboratory of Biosensing and Molecular Recognition, Research Centre for Analytical Sciences, College of Chemistry, Nankai University Tianjin 300071 PR China
| |
Collapse
|
5
|
Wang H, Wang S, Wang H, Tang F, Chen D, Liang Y, Li Z. Amplification-free detection of telomerase activity at the single-cell level via Cas12a-lighting-up single microbeads (Cas12a-LSMBs). LAB ON A CHIP 2023; 23:4674-4679. [PMID: 37795981 DOI: 10.1039/d3lc00598d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Telomerase overexpresses in almost all cancer cells and has been deemed a universal biomarker for cancer diagnosis and therapy. However, simple and ultrasensitive detection of telomerase activity in single-cells is still a huge challenge. Herein, we wish to report Cas12a-lighting up single microbeads (Cas12a-LSMBs) for ultrasensitive detection of telomerase activity without nucleic acid amplification. In this platform, single-strand DNA reporter (ssDNA reporter)-functionalized single-microbeads (functionalized-SMBs) are employed as a reactor for the trans-cleavage of telomerase-activated CRISPR/Cas12a as well as a reporting unit for fluorescence signal enrichment and visualization. Due to the space-confined effect and signal enrichment mechanism on the surface of the functionalized SMBs, the Cas12a-LSMBs can accurately detect telomerase activity in crude cell lysates with high specificity. Importantly, we have demonstrated that the Cas12a-LSMBs are a reliable and practical tool to detect telomerase activity in single cells and investigate cellular heterogeneity of telomerase activity from cell-to-cell variations.
Collapse
Affiliation(s)
- Honghong Wang
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Shuhui Wang
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Hui Wang
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Fu Tang
- School of Materials Science and Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China
| | - Desheng Chen
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Yuanwen Liang
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China.
| | - Zhengping Li
- Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China.
| |
Collapse
|
6
|
Ma X, Liu H, Tao S. A simple, sensitive and label-free method for miRNA analysis in gastric cancer via catalytic hairpin assembly assisted programming of split-G-quadruplexes. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:4236-4242. [PMID: 37584656 DOI: 10.1039/d3ay00989k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
Accurate analysis of miRNA is valuable for the diagnosis of various diseases. Herein, a sensitive and accurate fluorescence method was developed for miRNA detection based on catalytic hairpin assembly (CHA) and split-G-quadruplex (split-G4) based signal reactions. The presence of target miRNA activated the CHA process through unfolding the H1 probe, which could continuously induce the proximity of split-G4. The formed intact G4 can be specifically recognized by the commercial fluorescent dye ThT (thioflavin T), allowing for the highly sensitive, label-free detection of miRNAs. By utilizing split-G4 to generate a signal, the method exhibited a low background signal and a high reliability. In addition, the method is demonstrated to be applied for clinical sample detection, implying its promising prospect for disease diagnosis.
Collapse
Affiliation(s)
- Xiaoli Ma
- Gastroenterology Department, People's Hospital of Chong Qing Liang Jiang New Area, No. 199 Renxing Road, Renhe Street, Yubei District, Chongqing, 401120, China.
| | - Hongmei Liu
- Gastroenterology Department, People's Hospital of Chong Qing Liang Jiang New Area, No. 199 Renxing Road, Renhe Street, Yubei District, Chongqing, 401120, China.
| | - Siyu Tao
- Gastroenterology Department, People's Hospital of Chong Qing Liang Jiang New Area, No. 199 Renxing Road, Renhe Street, Yubei District, Chongqing, 401120, China.
| |
Collapse
|
7
|
Kohansal F, Mobed A, Aletaha N, Ghaseminasab K, Dolati S, Hasanzadeh M. Biosensing of telomerase antigen using sandwich type immunosensor based on poly(β-Cyclodextrin) decorated by Au@Pt nanoparticles: An innovative immune-platform toward early-stage identification of cancer. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
|
8
|
Zhu D, Huang T, Zhou Q, Yang Z, Liu B, Li M, Li C, Chen JX, Dai Z, Chen J. A label-free fluorescent aptasensor based on a novel exponential rolling circle amplification for highly sensitive ochratoxin A detection. Food Chem 2023; 410:135427. [PMID: 36623460 DOI: 10.1016/j.foodchem.2023.135427] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/09/2023]
Abstract
Rapid and sensitive analysis of ochratoxin A (OTA) plays an important role in food safety. Here, an aptasensor based on novel exponential rolling circle amplification (ERCA) was proposed for ultrasensitive and label-free fluorescence detection of OTA. The attachment of OTA to its aptamer could release H and rapidly hybridize with CT to initiate rolling circle amplification (RCA). The amplicons could further displace H from APH to initiate recycled RCA, achieving exponential growth of amplification products that contained G4 dimers for lighting up ThT. Benefiting from the exponential amplification efficiency of the ERCA strategy and the high fluorescence quantum yield of G4 dimer/ThT, this strategy exhibited a wide linear range from 10 fg/mL to 10 ng/mL with a detection limit of 4.3 fg/mL. In addition, the aptasensor displayed satisfactory recoveries in real sample analysis. We believe that this novel aptasensor possesses promising application prospects in food safety and medicine detection.
Collapse
Affiliation(s)
- Daozhong Zhu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China; Guangzhou Customs Technology Center, People's Republic of China, Guangzhou 510623, PR China
| | - Ting Huang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Qianying Zhou
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Zizhong Yang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Birong Liu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Minmin Li
- Center of Clinical Laboratory, The First Affiliated Hospital of Jinan University, Guangzhou 510632, PR China.
| | - Chunrong Li
- Qiannan Medical College for Nationalities, Duyun 558000, PR China
| | - Jin-Xiang Chen
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China.
| | - Zong Dai
- Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-Sen University, Shenzhen 518107, PR China
| | - Jun Chen
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangzhou Key Laboratory of Drug Research for Emerging Virus Prevention and Treatment, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, PR China.
| |
Collapse
|
9
|
Banovetz JT, Manimaran S, Schelske B, Anand RK. Parallel Dielectrophoretic Capture, Isolation, and Electrical Lysis of Individual Breast Cancer Cells to Assess Variability in Enzymatic Activity. Anal Chem 2023; 95:7880-7887. [PMID: 37172139 PMCID: PMC10578154 DOI: 10.1021/acs.analchem.3c00078] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Tumor cell heterogeneity drives disease progression and response to therapy, and therefore, there is a need for single-cell analysis methods. In this paper, we present an integrated, scalable method to analyze enzymatic activity in many individual cancer cells at once. The reported method uses dielectrophoresis (DEP) to selectively capture tumor cells at wireless electrodes aligned to an overlying array of cell-sized micropockets. Following hydrodynamic transfer of the captured cells into microfluidic chambers, the chambers are fluidically isolated and sealed with a hydrophobic ionic liquid, which possesses sufficient conductivity to allow for subsequent electrical lysis of the cells to access their contents for enzymatic assay. The wireless electrodes have an interlocking spiral design that ensures successful electrical lysis regardless of the location of the cell within the chamber. Here, breast cancer cells are assessed for β-galactosidase through its activation of a fluorogenic substrate. A key point is that the fluorogenic assay solution was optimized to allow for dielectrophoretic cell capture, thereby obviating the need for a solution exchange step. Our approach has several distinct advantages including a high rate of single-cell capture, a capture efficiency that is independent of the dimensions of the reaction chambers, no need for mechanical closure of reaction volumes, and no observed cross-talk. In this study, first, the steps of cell capture, transfer, and lysis are established on this platform in the presence of the optimized assay solution. We then quantify the increase in fluorescence intensity obtained over the duration of the enzymatic assay of individual cells. Finally, this method is applied to the analysis of β-galactosidase activity in 258 individual MDA-MB-231 breast cancer cells, revealing heterogeneity in expression of this enzyme in this cell line. We expect that the adaptability of this method will allow for expanded studies of single-cell enzymatic expression and activity. This will in turn open avenues of research into cancer cell heterogeneity in metabolism, invasiveness, and drug response. The ability to study these features of cancer at the single-cell level raises the possibility for treatment plans tailored to target the specific combinations of cell subpopulations present in tumors. Furthermore, we expect that this method can be adapted to uses outside of cancer research, such as studies of neuron metabolism, pathogenesis in bacteria, and stem cell development.
Collapse
Affiliation(s)
- Joseph T. Banovetz
- Department of Chemistry, Iowa State University, 2415 Osborn Drive, Ames, IA 50011-1021, USA
| | - Sivani Manimaran
- Department of Chemistry, Iowa State University, 2415 Osborn Drive, Ames, IA 50011-1021, USA
| | - Benjamin Schelske
- Department of Chemistry, Iowa State University, 2415 Osborn Drive, Ames, IA 50011-1021, USA
| | - Robbyn K. Anand
- Department of Chemistry, Iowa State University, 2415 Osborn Drive, Ames, IA 50011-1021, USA
| |
Collapse
|
10
|
Chen Z, Wang Y. A label- and enzyme-free fluorescence assay based on thioflavin T–induced G-quadruplexes for the detection of telomerase activity. JOURNAL OF CHEMICAL RESEARCH 2023. [DOI: 10.1177/17475198221139085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A label- and enzyme-free fluorescence assay based on thioflavin T–induced G-quadruplexes is developed to sensitively and specifically detect telomerase activity. Thioflavin T has a dual role as an efficient inducer and fluorescent probe, and the incorporation of thioflavin T into the thioflavin T–induced G-quadruplexes results in an intense fluorescence enhancement. In the presence of thioflavin T and K+, G-quadruplexes are formed by elongation of the telomerase substrate primer that is catalyzed by telomerase extracted from cancer cells. Thus, the telomerase activity in cancer cell extracts can be evaluated by measuring the thioflavin T fluorescence. More importantly, thioflavin T can specifically recognize and bind to G-quadruplexes, whereas it cannot recognize single- and double-stranded DNAs, which leads to the thioflavin T–based fluorescence assay exhibiting a reduced background and improved signal-to-noise ratio. As a result, the proposed assay has the linear range from 5 to 200 HeLa cells and the detection limit is 34 HeLa cells, which holds great potential for use in the detection of telomerase activity and the diagnosis of cancer.
Collapse
Affiliation(s)
- Zhe Chen
- School of Forensic Medicine, Shanxi Medical University, Jinzhong, P.R. China
- Key Laboratory of Forensic Toxicology of Ministry of Public Security, Jinzhong, P.R. China
| | - Yunxia Wang
- Department of Laboratory Science, Shanxi Medical University, Taiyuan, P.R. China
- The Sixth Hospital of Shanxi Medical University (General Hospital of Tisco), Taiyuan, P.R. China
| |
Collapse
|
11
|
Wang J, Liu X, Xue W, Wei Y, Xu Z. Highly sensitive monitoring of telomerase activity in living cells based on rapidly triggered cascade amplification reaction. Biosens Bioelectron 2022; 216:114645. [PMID: 36029663 DOI: 10.1016/j.bios.2022.114645] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 08/04/2022] [Accepted: 08/16/2022] [Indexed: 11/25/2022]
Abstract
Telomerase is an important potential biomarker for the study of tumor progression. Herein, we designed a cascade-amplification-reaction-based nanoprobe for intracellular telomerase detection based on the integration of rolling circle amplification (RCA) and catalytic hairpin assembly (CHA) onto MnO2 nanosheets. Firstly, MnO2 nanosheets rapidly delivered and released signal amplification units into cells, and very short telomerase extension products formed RCA circular templates and initiated the exponential RCA, producing enriched telomere sequence amplification products. Then the amplification products specifically triggered the CHA process and numerous H1/H2 complexes were formed, realizing the exponential amplification of fluorescence signals. The detection limit is as low as 1 LoVo cell for telomerase activity in cell extract. We further designed a microfluidic chip with six independent cell culture regions for in situ fluorescence imaging. Simultaneous detection of six types of cells was realized on the chip, and only 1-2 μL of cell suspension and reagents are needed. Our detection method features faster response speed and stronger fluorescence signal. Telomerase in living cells showed strong fluorescence signal within 1.5 h, and tumor cells were effectively distinguished from normal cells. Telomerase activities of different types of tumor cells and activity changes were both monitored conveniently. These results demonstrate that this method holds the potential for the sensitive detection of low abundance biomarkers in living cells, and will contribute to cancer diagnosis, cancer treatment and telomerase-related drug screening.
Collapse
Affiliation(s)
- Jie Wang
- Research Center for Analytical Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Xiaopeng Liu
- Research Center for Analytical Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Wanyi Xue
- Research Center for Analytical Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Yunyun Wei
- Research Center for Analytical Sciences, Northeastern University, Shenyang, 110819, PR China
| | - Zhangrun Xu
- Research Center for Analytical Sciences, Northeastern University, Shenyang, 110819, PR China.
| |
Collapse
|
12
|
Cheng XR, Wang F, Liu CY, Li J, Shan C, Wang K, Wang Y, Li PF, Li XM. Sensitive naked-eye detection of telomerase activity based on exponential amplification reaction and lateral flow assay. Anal Bioanal Chem 2022; 414:6139-6147. [PMID: 35715586 DOI: 10.1007/s00216-022-04179-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/09/2022] [Accepted: 06/13/2022] [Indexed: 11/27/2022]
Abstract
Telomerase is a promising diagnostic and prognostic biomarker for cancers. Sensitive, simple, and reliable telomerase activity detection is vital for cancer diagnosis. Herein, we developed an ultrasensitive visualized assay for telomerase activity that combined the exponential amplification reaction (EXPAR) and lateral flow assay for easy and quick signal readout, which we termed as a lateral flow readout-EXPAR (LFR-EXPAR) assay. In the LFR-EXPAR assay, telomerase elongation products initiate the exponential amplification reaction, the generated trigger hybridizes with the reporter to form the recognition site of the nicking enzyme, and the nicking enzyme cuts the reporter strand. The degradation of the reporter can be detected with a universal lateral flow dipstick and read out with the naked eye. After conducting a series of proof-of-concept investigations, the LFR-EXPAR assay was found to achieve a sensitivity comparable to that of a TRAP (telomere repeat amplification protocol) assay. The LFR-EXPAR assay can be used to realize ultrasensitive and point-of-care detection of telomerase without requiring specialized instruments, holding great promise for early cancer diagnosis.
Collapse
Affiliation(s)
- Xue-Ru Cheng
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, 1 Ningde Road, Qingdao, 266073, China
| | - Fei Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, 1 Ningde Road, Qingdao, 266073, China
| | - Cui-Yun Liu
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, 1 Ningde Road, Qingdao, 266073, China
| | - Jing Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, 1 Ningde Road, Qingdao, 266073, China
| | - Chan Shan
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, 1 Ningde Road, Qingdao, 266073, China
| | - Kun Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, 1 Ningde Road, Qingdao, 266073, China
| | - Yin Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, 1 Ningde Road, Qingdao, 266073, China.
| | - Pei-Feng Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, 1 Ningde Road, Qingdao, 266073, China.
| | - Xin-Min Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, 1 Ningde Road, Qingdao, 266073, China.
| |
Collapse
|
13
|
Wang X, Xuan T, Huang W, Li X, Lai G. Endonuclease-driven DNA walking for constructing a novel colorimetric and electrochemical dual-mode biosensing method. Anal Chim Acta 2022; 1208:339835. [DOI: 10.1016/j.aca.2022.339835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/10/2022] [Accepted: 04/13/2022] [Indexed: 12/24/2022]
|
14
|
Ultrasensitive photoelectrochemical aptasensor for detecting telomerase activity based on Ag 2S/Ag decorated ZnIn 2S 4/C 3N 4 3D/2D Z-scheme heterostructures and amplified by Au/Cu 2+-boron-nitride nanozyme. Biosens Bioelectron 2022; 203:114048. [PMID: 35121445 DOI: 10.1016/j.bios.2022.114048] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 01/25/2022] [Indexed: 02/07/2023]
Abstract
Enzyme-mediated signal amplification strategies have gained substantial attention in photoelectrochemical (PEC) biosensing, while natural enzyme on the photoelectrode inevitably obstructs the interfacial electron transfer, in turn deteriorating the photocurrent responses. Herein, Au nanoparticles and Cu2+-modified boron nitride nanosheets (AuNPs/Cu2+-BNNS) behaved as nanozyme to achieve remarkable magnification in the PEC signals from a novel signal-off aptasensor for ultra-sensitive assay of telomerase (TE) activity based on Ag2S/Ag nanoparticles decorated ZnIn2S4/C3N4 Z-scheme heterostructures (termed as Ag2S/Ag/ZnIn2S4/C3N4, synthesized by hydrothermal treatment). Specifically, telomerase primer sequences (TS) were extended by TE in the presence of deoxyribonucleoside triphosphates (dNTPs), which was directly bond with the thiol modified complementary DNA (cDNA), achieving efficient linkage with the nanozyme via Au-S bond. The immobilized nanoenzyme catalyzed the oxidation between 4-chloro-1-naphthol (4-CN) and H2O2 to generate insoluble precipitation on the photo-electrode. By virtue of the inhibited PEC signals with the TE-enabled TS extension, an aptasensor for assay of TE activity was developed, showing the wide linear range of 50-5×105 cell mL-1 and a low detection limit of 19 cell mL-1. This work provides some valuable guidelines for developing advanced nanozyme-based PEC bioanalysis of diverse cancer cells.
Collapse
|
15
|
Zhao X, Yuan Y, Liu X, Mao F, Xu G, Liu Q. A Versatile Platform for Sensitive and Label-Free Identification of Biomarkers through an Exo-III-Assisted Cascade Signal Amplification Strategy. Anal Chem 2022; 94:2298-2304. [PMID: 35040308 DOI: 10.1021/acs.analchem.1c05012] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The development of a versatile and sensitive analytical biomarker detection platform is important for both early diagnosis and treatment of diseases. In the present study, we propose a novel fluorescence-based, ultrasensitive, and label-free biomarker detection platform. This platform relies on a flexible probe design compatible for multiple biomarker identification and Exo-III enzyme-triggered cascade signal amplification. We have validated that this label-free platform exhibits high sensitivity and specificity. Indeed, this platform exhibited brilliant analytical performance in qualifying a carcinoembryonic antigen and small extracellular vesicles (sEVs). It also shows excellent capability in multiplexing mapping of surface proteins of various cancer-derived sEVs. Therefore, we believe that the proposed sensing platform has great potential for clinical diagnosis and anticancer drug development.
Collapse
Affiliation(s)
- Xianxian Zhao
- Department of Clinical Laboratory, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China
| | - Ye Yuan
- Department of Oncology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400000, China
| | - Xiaoya Liu
- Department of Oncology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Fajiang Mao
- Department of Clinical Laboratory, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China
| | - Ge Xu
- Department of Oncology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Qingzhong Liu
- Department of Clinical Laboratory, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, China
| |
Collapse
|
16
|
A novel aptasensor based on DNA hydrogel for sensitive visual detection of ochratoxin A. Mikrochim Acta 2021; 188:395. [PMID: 34709464 DOI: 10.1007/s00604-021-05000-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 08/24/2021] [Indexed: 10/20/2022]
Abstract
A novel visual detection mode is proposed to improve the detection sensitivity for the determination of ochratoxin A (OTA). The mode is based on aptamer recognition and the signal amplification of rolling circle amplification (RCA) products self-assembled DNA hydrogel. Moreover, gold nanoparticles (AuNPs) were directly assembled inside the DNA hydrogel by adjusting the padlock probe sequences to achieve a stronger binding force between the DNA hydrogel and AuNPs; this avoids the need for modification of AuNPs with DNA sequences. In the presence of OTA, DNA hydrogel is formed. With higher concentrations of OTA, a larger amount of DNA hydrogel is formed. When AuNPs are added to the DNA hydrogel, AuNPs can be enclosed inside the DNA hydrogel. With more DNA hydrogel, there is less AuNPs in the supernatant. Thus, the absorbance of the supernatant is anti-correlated with the concentration of OTA. After optimization of the experimental conditions, the change in the absorbance of the supernatant was linearly correlated with the concentration of OTA, in the range 0.05 to 10 ng/mL; the limit of detection was 0.005 ng/mL. The good specificity of the developed biosensor was confirmed in the presence of other mycotoxins that are coexistent with or analogues of OTA. By comparing the developed method with the ELISA method, the accuracy and stability of this new method were also verified, with good performance obtained in real samples. Diagram of the principle of the colorimetric aptasensor for OTA detection based on rolling circle amplification product self-assembled DNA hydrogel.
Collapse
|
17
|
Rolling Circle Amplification as an Efficient Analytical Tool for Rapid Detection of Contaminants in Aqueous Environments. BIOSENSORS-BASEL 2021; 11:bios11100352. [PMID: 34677308 PMCID: PMC8533700 DOI: 10.3390/bios11100352] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/16/2021] [Accepted: 09/21/2021] [Indexed: 12/16/2022]
Abstract
Environmental contaminants are a global concern, and an effective strategy for remediation is to develop a rapid, on-site, and affordable monitoring method. However, this remains challenging, especially with regard to the detection of various contaminants in complex water environments. The application of molecular methods has recently attracted increasing attention; for example, rolling circle amplification (RCA) is an isothermal enzymatic process in which a short nucleic acid primer is amplified to form a long single-stranded nucleic acid using a circular template and special nucleic acid polymerases. Furthermore, this approach can be further engineered into a device for point-of-need monitoring of environmental pollutants. In this paper, we describe the fundamental principles of RCA and the advantages and disadvantages of RCA assays. Then, we discuss the recently developed RCA-based tools for environmental analysis to determine various targets, including heavy metals, organic small molecules, nucleic acids, peptides, proteins, and even microorganisms in aqueous environments. Finally, we summarize the challenges and outline strategies for the advancement of this technique for application in contaminant monitoring.
Collapse
|
18
|
Zhou X, Zhang JL, Chang MH, Fan GT, Liu XZ, Wu SJ, Shi X. Sensitive osteosarcoma diagnosis through five-base telomerase product-triggered CRISPR-Cas12a enhanced rolling circle amplification. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4063-4068. [PMID: 34555130 DOI: 10.1039/d1ay00952d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Osteosarcoma is the most frequent primary malignant bone tumor, composed of mesenchymal cells producing osteoid and immature bone. The sensitive detection of telomerase plays a pivotal role in the early diagnosis and therapeutic treatment of osteosarcoma. We report here an in vitro strategy for sensitive telomerase activity detection through the integration of rolling circle amplification (RCA) and a clustered regularly spaced short palindrome repeats (CRISPR)-Cas12a system. In the proposed strategy, telomerase substrate (TS) primers are easily controlled to extend five bases (GGGTT) to give short telomerase extension products (TEP) with definite lengths without adding dATP. The resulting short TEPs can then cyclize the padlock through hybridizing with its two terminals and thus initiate the following RCA. To obtain an improved sensitivity, the CRISPR-Cas12a system is attached to collaterally cut surrounding DNA reporter probes after recognizing the target single strand DNA sequence in the RCA products. The highlights of this strategy are as follows: (i) the short TEP triggered strategy is excellent at detecting low telomerase activity and thus contributes to the early diagnosis of malignant tumors; (ii) highly sensitive telomerase activity detection which is easy to operate from RCA initiated CRISPR-Cas12a; (iii) opening up of a new avenue for telomerase activity detection with a CRISPR-Cas12a system. Finally, the proposed strategy exhibited sensitive telomerase activity detection under optimized experimental parameters and has great application potential for the clinical diagnosis of malignant tumors and the development of anti-cancer drugs.
Collapse
Affiliation(s)
- Xing Zhou
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China.
| | - Jun-Liang Zhang
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China.
| | - Meng-Han Chang
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China.
| | - Gen-Tao Fan
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China.
| | - Xiao-Zhou Liu
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China.
| | - Su-Jia Wu
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China.
| | - Xin Shi
- Department of Orthopaedics, Jinling Hospital, School of Medicine, Nanjing University, 305 Zhongshan East Road, Nanjing, 210002, China.
| |
Collapse
|
19
|
Wei G, Peng Z, Liu J, Yang K, Zhao C, Xie W, Huang T, Liu J, Li J, An G. Accurate Identification and Early Diagnosis of Osteosarcoma through CRISPR-Cas12a-Based Average Telomerase Activity Detection. ACS Synth Biol 2021; 10:2409-2416. [PMID: 34495650 DOI: 10.1021/acssynbio.1c00389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Sensitive and reliable analysis of telomerase activity is important for clinical diagnosis, therapy, and prognosis of osteosarcoma. Telomerase activity is a complicated concept including both the amount of active telomerases and the length of the telomerases extension product. Still, few of the strategies formerly proposed distinguish the two aspects of telomerase activity. Herein, we propose a novel CRISPR-Cas12a-based fluorescent sensing platform that can output signals of both the amounts of telomerase and length of telomerase extension products with the assistance of an elegantly designed stem-loop probe and CRISPR-Cas12a system. On this basis, we induced a novel index, average telomerase activity, for accurate cancer reporting. Through systematic laboratory and clinical experiments, we have demonstrated that average telomerase activity can accurately distinguish cancer cells and has the potential for osteosarcoma staging.
Collapse
Affiliation(s)
- Guojun Wei
- Department of Orthopaedics, The Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen City, Fujian Province 361101, China
| | - Zhibing Peng
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150081, China
| | - Jingsong Liu
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150081, China
| | - Kun Yang
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150081, China
| | - Chenglong Zhao
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150081, China
| | - Wei Xie
- Department of Orthopaedics, Mudanjiang Forestry Central Hospital, Mudanjiang City, Heilongjiang Province 157000, China
| | - Tianwen Huang
- Department of Orthopaedics, General Hospital of Heilongjiang Agricultural Reclamation Group, Harbin City, Heilongjiang Province 150088, China
| | - Jiafeng Liu
- Department of Orthopaedics, General Hospital of Heilongjiang Agricultural Reclamation Group, Harbin City, Heilongjiang Province 150088, China
| | - Jin Li
- Department of Integrated medicine, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150081, China
| | - Gang An
- Department of Orthopaedics, The First Affiliated Hospital of Harbin Medical University, Harbin City, Heilongjiang Province 150081, China
| |
Collapse
|
20
|
Jia H, Shang N, He X, Nsabimana A, Sun D, Wang H, Zhang Y. Epoxy-functionalized macroporous carbon with embedded platinum nanoparticles for electrochemical detection of telomerase activity via telomerase-triggered catalytic hairpin assembly. Talanta 2021; 225:121957. [PMID: 33592712 DOI: 10.1016/j.talanta.2020.121957] [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: 09/27/2020] [Revised: 11/21/2020] [Accepted: 12/01/2020] [Indexed: 01/14/2023]
Abstract
Telomerase is regarded as a crucial biomarker for the early diagnosis of malignant tumors and a valuable therapeutic target. In this work, a telomerase-triggered amplification strategy was designed on the basis of a catalyzed hairpin assembly (CHA) for bridging a signal probe of platinum nanoparticles (Pt NPs) anchored on three-dimensional (3D) epoxy-functionalized macroporous carbon (Pt/MPC-COOH) in an ultrasensitive electrochemical biosensor. Pt/MPC-COOH nanomaterials with interconnected macroporous structure not only immobilized hairpin DNA probe 2 (H2) via an amide reaction (Pt/MPC-COOH-H2), but they also generated an obvious electrochemical signal in response to acetaminophen (AP) oxidation. After the introduction of telomerase, telomerase primer (TP) was extended to a telomerase extension product (TEP) with several hexamer repeats (TTAGGG)n to initiate the CHA cycle, leading to signal amplification. Subsequently, with the TEP-triggered CHA cycle amplification strategy, a large amount of Pt/MPC-COOH-H2 was introduced on the electrode surface for the construction of the electrochemical platform, which realized the sensitive detection of telomerase activity from 102 to107 cells mL-1 with a limit of detection (LOD) of 9.02 cells mL-1. This strategy provides a sensitive method for the detection of biomolecules that could be useful for bioanalysis and early clinical diagnoses of diseases.
Collapse
Affiliation(s)
- Huixian Jia
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Institute of Life Science and Green Development, Hebei University, 071002, Baoding, PR China
| | - Ningzhao Shang
- College of Science, Hebei Agricultural University, 071001, Baoding, PR China
| | - Xiaobo He
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Institute of Life Science and Green Development, Hebei University, 071002, Baoding, PR China
| | - Anaclet Nsabimana
- Chemistry Department, College of Science and Technology, University of Rwanda, Po Box: 3900, Kigali, Rwanda
| | - Danna Sun
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Institute of Life Science and Green Development, Hebei University, 071002, Baoding, PR China
| | - Huan Wang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Institute of Life Science and Green Development, Hebei University, 071002, Baoding, PR China
| | - Yufan Zhang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Institute of Life Science and Green Development, Hebei University, 071002, Baoding, PR China.
| |
Collapse
|
21
|
New insight into G-quadruplexes; diagnosis application in cancer. Anal Biochem 2021; 620:114149. [PMID: 33636157 DOI: 10.1016/j.ab.2021.114149] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 02/01/2021] [Accepted: 02/18/2021] [Indexed: 02/06/2023]
Abstract
Biochemical properties and flexibility of nitrogenous bases allow DNA to fold into higher-order structures. Among different DNA secondary structure, G-quadruplexes (tetrapelexes-G4) - which are formed in guanine rich sequences - have gained more attention because of their biological significance, therapeutic intervention, and application in molecular device and biosensor. G4-quadruplex studies categorize into three main fields, in vivo, in vitro, and in silico. The in vitro field includes G4 synthetic oligonucleotides. This review focuses on the G-quadruplex synthetic aptamers structure features and considers the applicability of G4-aptamers for cancer biomarkers detection. Various biosensing methods will be reviewed based on G-quadruplex aptamers for cancer detection.
Collapse
|
22
|
Chen X, Deng Y, Cao G, Liu X, Gu T, Feng R, Huo D, Xu F, Hou C. An ultrasensitive and point-of-care sensor for the telomerase activity detection. Anal Chim Acta 2021; 1146:61-69. [PMID: 33461720 DOI: 10.1016/j.aca.2020.11.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023]
Abstract
Telomerase owns great application potential in diagnosis, therapy, prognosis, and drug screening of cancers. Thus, the ultrasensitive and point-of-care detection of telomerase activity meets the clinical demands extremely. Here, a sensor based on telomerase extends activators to unlock the ssDNase activity of CRISPR/Cas12a was created for the first time to detect the telomerase activity. Based on the fluorescence or CRISPR/Cas12a-based lateral flow assay, we achieve the ultrasensitive and point-of-care detection of telomerase activity in MCF-7 cells low to 57 cells·mL-1 and 5.7 × 102 cells·mL-1 in about 1 h, respectively. Besides, the detection of telomerase activity in different subtype breast cancer cells indicates that the proposed sensor possesses potential in the classification of breast cancer cell subtypes.
Collapse
Affiliation(s)
- Xiaolong Chen
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, PR China
| | - Yuanyi Deng
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, PR China
| | - Gaihua Cao
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, PR China
| | - Xinyi Liu
- Hongshen Honors College, Chongqing University, Chongqing, 400044, PR China
| | - Tao Gu
- Hongshen Honors College, Chongqing University, Chongqing, 400044, PR China
| | - Ruoyang Feng
- Hongshen Honors College, Chongqing University, Chongqing, 400044, PR China
| | - Danqun Huo
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, PR China; Chongqing Key Laboratory of Bio-perception & Intelligent Information Processing, School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, 400044, PR China.
| | - Faliang Xu
- Treatment Center of Breast Diseases, Chongqing Cancer Institute and Hospital, Chongqing University, Chongqing, 400030, PR China.
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400044, PR China.
| |
Collapse
|
23
|
Wang D, Xue W, Ren X, Xu Z. A review on sensing mechanisms and strategies for telomerase activity detection. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2020.116115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
24
|
Xu L, Duan J, Chen J, Ding S, Cheng W. Recent advances in rolling circle amplification-based biosensing strategies-A review. Anal Chim Acta 2020; 1148:238187. [PMID: 33516384 DOI: 10.1016/j.aca.2020.12.062] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/09/2020] [Accepted: 12/28/2020] [Indexed: 01/12/2023]
Abstract
Rolling circle amplification (RCA) is an efficient enzymatic isothermal reaction that using circular probe as a template to generate long tandem single-stranded DNA or RNA products under the initiation of short DNA or RNA primers. As a simplified derivative of natural rolling circle replication which synthesizes copies of circular nucleic acids molecules such as plasmids, RCA amplifies the circular template rapidly without thermal cycling and finds various applications in molecular biology. Compared with other amplification strategies, RCA has many obvious advantages. Firstly, because of the strict complementarity required in ligation of a padlock probe, it endows the RCA reaction with high specificity and can even be utilized to distinguish single base mismatches. Secondly, through the introduction of multiple primers, exponential amplification can be achieved easily and leads to a good sensitivity. Thirdly, RCA products can be customized by manipulating circular templates to generate functional nucleic acids such as aptamer, DNAzymes and restriction enzyme sites. Moreover, the RCA has good biocompatibility and is especially suitable for in situ detection. Therefore, RCA has attracted considerable attention as an efficient and potential tool for highly sensitive detection of biomarkers. Herein, we comprehensively introduce the fundamental principles of RCA technology, summarize it from three aspects including initiation mode, amplification mode and signal output mode, and discuss the recent application of RCA-based biosensor in this review.
Collapse
Affiliation(s)
- Lulu Xu
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Jiaxin Duan
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Junman Chen
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China
| | - Shijia Ding
- Key Laboratory of Clinical Laboratory Diagnostics (Ministry of Education), College of Laboratory Medicine, Chongqing Medical University, Chongqing, 400016, PR China.
| | - Wei Cheng
- The Center for Clinical Molecular Medical Detection, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China.
| |
Collapse
|
25
|
Zheng KW, Liu C, Meng Q, Hao YH, Zheng JP, Li W, Tan Z. One-Step High-Throughput Telomerase Activity Measurement of Cell Populations, Single Cells, and Single-Enzyme Complexes. ACS OMEGA 2020; 5:24666-24673. [PMID: 33015483 PMCID: PMC7528320 DOI: 10.1021/acsomega.0c03246] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 09/01/2020] [Indexed: 05/08/2023]
Abstract
Telomerase, a key enzyme involved in telomere homeostasis, is a major player involved in or required for sustained cell proliferation. It is expressed in ∼90% tumor but rarely in normal somatic cells. Therefore, telomerase serves as a diagnostic marker and therapeutic target of cancers. Although many methods are available for measuring telomerase activity, a convenient, fast, sensitive, and reliable method is still lacking for routine use in both clinics and research. Here, we present a single-enzyme sensitivity telomere repeat amplification protocol for quantifying telomerase activity. With multiple optimizations, the protocol pushes the ultimate detection limit down to a single telomerase complex, enabling measurement of telomerase activity of not only multiple cancerous/normal cell samples but also single cancer cells alone or even in the presence of 8000 normal cells. Implemented in a one-step mix-and-run format, the protocol offers a most sensitive, fast, accurate, and reproducible quantification of telomerase activity with linearity ranging from 20,000 HeLa cancer cells to a single telomerase complex. It requires minimal manual operation and experimental skill and is convenient for either low or high throughput of samples. We expect that the protocol should provide practical routine analyses of telomerase in both research and clinical applications. As an example, we demonstrate how telomerase activity evolves at the single-cell level and partitions in cell division in early mouse embryo development.
Collapse
Affiliation(s)
- Ke-wei Zheng
- School of Pharmaceutical
Sciences (Shenzhen), Sun Yat-Sen University, Guangzhou 510275, P. R. China
- State Key Laboratory of Membrane Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
| | - Chao Liu
- State Key Laboratory of Stem Cell and Reproductive
Biology, Institute of Zoology, Chinese Academy
of Sciences, Beijing 100101, P. R. China
| | - Qing Meng
- State Key Laboratory of Membrane Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
| | - Yu-hua Hao
- State Key Laboratory of Membrane Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
| | - Jin-ping Zheng
- Center
for Healthy Aging, Changzhi Medical College, Changzhi 046000, Shanxi, P. R. China
| | - Wei Li
- State Key Laboratory of Stem Cell and Reproductive
Biology, Institute of Zoology, Chinese Academy
of Sciences, Beijing 100101, P. R. China
| | - Zheng Tan
- State Key Laboratory of Membrane Biology, Chinese Academy of Sciences, Beijing 100101, P. R. China
- Center
for Healthy Aging, Changzhi Medical College, Changzhi 046000, Shanxi, P. R. China
| |
Collapse
|
26
|
Kamal S, Junaid M, Ejaz A, Bibi I, Akash MSH, Rehman K. The secrets of telomerase: Retrospective analysis and future prospects. Life Sci 2020; 257:118115. [PMID: 32698073 DOI: 10.1016/j.lfs.2020.118115] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 07/06/2020] [Accepted: 07/13/2020] [Indexed: 12/12/2022]
Abstract
Telomerase plays a significant role to maintain and regulate the telomere length, cellular immortality and senescence by the addition of guanine-rich repetitive sequences. Chronic inflammation or oxidative stress-induced infection downregulates TERT gene modifying telomerase activity thus contributing to the early steps of gastric carcinogenesis process. Furthermore, telomere-telomerase system performs fundamental role in the pathogenesis and progression of diabetes mellitus as well as in its vascular intricacy. The cessation of cell proliferation in cultured cells by inhibiting the telomerase activity of transformed cells renders the rationale for culling of telomerase as a target therapy for the treatment of metabolic disorders and various types of cancers. In this article, we have briefly described the role of immune system and malignant cells in the expression of telomerase with critical analysis on the gaps and potential for future studies. The key findings regarding the secrets of the telomerase summarized in this article will help in future treatment modalities for the prevention of various types of cancers and metabolic disorders notably diabetes mellitus.
Collapse
Affiliation(s)
- Shagufta Kamal
- Department of Biochemistry, Government College University Faisalabad, Pakistan
| | - Muhammad Junaid
- Department of Biochemistry, Government College University Faisalabad, Pakistan
| | - Arslan Ejaz
- Department of Biochemistry, Government College University Faisalabad, Pakistan
| | - Ismat Bibi
- Department of Chemistry, Islamia University, Bahawalpur, Pakistan
| | | | - Kanwal Rehman
- Department of Pharmacy, University of Agriculture, Faisalabad, Pakistan.
| |
Collapse
|
27
|
Zhao LL, Pan HY, Zhang XX, Zhou YL. Ultrasensitive detection of microRNA based on a homogeneous label-free electrochemical platform using G-triplex/methylene blue as a signal generator. Anal Chim Acta 2020; 1116:62-69. [DOI: 10.1016/j.aca.2020.04.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 04/11/2020] [Accepted: 04/14/2020] [Indexed: 01/09/2023]
|
28
|
Liu Y, Li S, Zhang L, Zhao Q, Li N, Wu Y. Catalytic Hairpin Assembly-Assisted Rolling Circle Amplification for High-Sensitive Telomerase Activity Detection. ACS OMEGA 2020; 5:11836-11841. [PMID: 32478275 PMCID: PMC7254775 DOI: 10.1021/acsomega.0c01459] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 04/30/2020] [Indexed: 05/19/2023]
Abstract
Telomerase is a promising biomarker and a potential therapeutic target of malignant tumors. Reliable, facile, and sensitive telomerase activity analysis is of vital importance for both early diagnosis and therapy of malignant tumors. Herein, we proposed a novel fluorescent assay termed catalytic hairpin assembly-assisted rolling circle amplification (CAR) for both in vitro and in situ high-sensitive telomerase activity detection. In the presence of active telomerase, the extension of a designed telomerase primer was limited to five bases (GGGTT), thus forming short telomerase products. Afterward, the obtained telomerase extension products cyclized Padlock and subsequently initiated the rolling circle amplification (RCA). In order to maintain a higher sensitivity, an ingeniously designed catalytic hairpin assembly (CHA) was attached for both signal amplification and result readout. The highlights of the CAR method were concluded as follows: (i) dual signal amplification from CHA and RCA ensures high sensitivity and (ii) the CAR method has the potential for both in vitro and intracellular imaging of telomerase activity. We believe that the CAR method would be of great potential for the diagnosis and therapy of various human diseases.
Collapse
|
29
|
Chen J, Morihiro K, Fukui D, Guo L, Okamoto A. Live-Cell Sensing of Telomerase Activity by Using Hybridization-Sensitive Fluorescent Oligonucleotide Probes. Chembiochem 2020; 21:1022-1027. [PMID: 31840916 DOI: 10.1002/cbic.201900555] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/04/2019] [Indexed: 12/11/2022]
Abstract
Live-cell sensing of telomerase activity with simple and efficient strategies remains a challenging target. In this work, a strategy for telomerase sensing by using hybridization-sensitive fluorescent oligonucleotide probes is reported. In the presence of telomerase and dNTPs, the designed supporting strand was extended and generated the hairpin structure that catalyzed the next telomerase extending reaction. The special extension mechanism increased the local concentration of another supporting strand and telomerase, which resulted in enhanced telomerase activity. The hybridization-sensitive oligonucleotide probes bound to the hairpin catalyst and generated turn-on fluorescence. This method realized the sensing of telomerase activity in HeLa cell extract with a detection limit below 1.6×10-6 IU μL-1 . The real-time in situ observation of telomerase extension was achieved in living HeLa cells. This strategy has been applied to monitor the efficiency of telomerase-targeting anticancer drugs in situ.
Collapse
Affiliation(s)
- Jiazhuo Chen
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Kunihiko Morihiro
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Daisuke Fukui
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Lihao Guo
- Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| | - Akimitsu Okamoto
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.,Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8904, Japan
| |
Collapse
|
30
|
Chen J, Pan J, Liu C. Versatile Sensing Platform for Cd 2+ Detection in Rice Samples and Its Applications in Logic Gate Computation. Anal Chem 2020; 92:6173-6180. [PMID: 32208648 DOI: 10.1021/acs.analchem.0c01022] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A versatile sensing platform was designed for Cd2+ detection utilizing Mg2+-dependent DNAzyme as the biocatalyst and toehold-mediated strand replacement as the reaction mechanism. The Cd2+-aptamer interaction brings the split subunits of the Mg2+-dependent DNAzyme into close-enough proximity, which generates an active DNAzyme that can catalyze the cleavage reaction toward the hairpin substrate strand (H1). The trigger DNA fragment in H1 can open another hairpin probe (H2) to activate the cyclic signal amplification process. The generated numerous G-quadruplex DNAzyme structures will produce a high fluorescence response after incubation with the fluorescence dye N-methyl mesoporphyrin IX (NMM). This detection platform is ultrasensitive and the detection limit (LOD) is 2.5 pM (S/N = 3). The sensing system is robust and can work effectively even in a complex sample matrix, enabling the quantitative analysis of Cd2+ content in rice samples with good reliability. Showing the unique features of simple operation, label-free and enzyme-free format, high sensitivity and selectivity, and universal signal amplification mode, our proposed sensing protocol holds great promise for becoming a competitive alternative for the routine monitoring of Cd2+ pollution. Importantly, this flexible and versatile sensing platform was used to construct some exquisite logic gates, including AND, OR, INHIBIT, IMPLICATION, NOR, and NAND.
Collapse
Affiliation(s)
- Junhua Chen
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China.,National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China
| | - Jiafeng Pan
- Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental Science & Technology, Guangzhou 510650, China.,National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangzhou 510650, China
| | - Chengshuai Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| |
Collapse
|
31
|
Tang X, Wang Y, Zhou L, Zhang W, Yang S, Yu L, Zhao S, Chang K, Chen M. Strand displacement-triggered G-quadruplex/rolling circle amplification strategy for the ultra-sensitive electrochemical sensing of exosomal microRNAs. Mikrochim Acta 2020; 187:172. [DOI: 10.1007/s00604-020-4143-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Accepted: 01/24/2020] [Indexed: 01/01/2023]
|
32
|
Zhang D, Cai L, Bian F, Kong T, Zhao Y. Label-Free Quantifications of Multiplexed Mycotoxins by G-Quadruplex Based on Photonic Barcodes. Anal Chem 2020; 92:2891-2895. [PMID: 32013396 DOI: 10.1021/acs.analchem.9b05213] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Multiplexed quantification of mycotoxins is of great significance in food safety. Here, novel photonic crystal (PhC) barcodes with G-quadruplex aptamer encapsulated for label-free multiplex mycotoxins quantification are developed. The probes are immobilized on PhC barcodes to form a molecular beacon (MB), which contains the sequences of mycotoxin aptamers and a G-quadruplex. In the presence of the target, the hairpin structure of MB would open and the region of the G-quadruplex is exposed, which subsequently combines with Thioflavin T (ThT) to produce fluorescence. The relative fluorescence intensity increased as the mycotoxins concentration increased in a linear range from 1.0 pg/mL to 100 ng/mL. Moreover, the multiplexed mycotoxins quantification could be achieved by tuning the structural color of the PhC barcodes. We demonstrate that this method with high accuracy and specificity for multiplexed detection of mycotoxins, with the sensitivity of the detection as low as 0.70 pg/mL. Our results show that G-quadruplex-encapsulated PhC barcodes offer a novel simple and label-free pathway toward the multiplex screen assay of mycotoxins for food safety.
Collapse
Affiliation(s)
- Dagan Zhang
- Guangdong Key Laboratory of Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine , Shenzhen University , Shenzhen 518060 , China.,State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Lijun Cai
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Feika Bian
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| | - Tiantian Kong
- Guangdong Key Laboratory of Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine , Shenzhen University , Shenzhen 518060 , China
| | - Yuanjin Zhao
- Guangdong Key Laboratory of Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine , Shenzhen University , Shenzhen 518060 , China.,State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering , Southeast University , Nanjing 210096 , China
| |
Collapse
|
33
|
Yang G, Zhang Q, Ma L, Zheng Y, Tian F, Li H, Zhang P, Qu LL. Sensitive detection of telomerase activity in cells using a DNA-based fluorescence resonance energy transfer nanoprobe. Anal Chim Acta 2020; 1098:133-139. [DOI: 10.1016/j.aca.2019.11.035] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/27/2019] [Accepted: 11/12/2019] [Indexed: 01/04/2023]
|
34
|
Target induced framework nucleic acid nanomachine with doxorubicin-spherical nucleic acid tags for electrochemical determination of human telomerase activity. Mikrochim Acta 2020; 187:97. [PMID: 31907624 DOI: 10.1007/s00604-019-4095-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 12/23/2019] [Indexed: 02/01/2023]
Abstract
A stable and enzyme-free method is described for highly sensitive determination of telomerase activity. It is based on the use of a framework nucleic acid (FNA) nanomachine and doxorubicin-spherical nucleic acid (DSNA) tags. Upon incubation with telomerase, the primer-tetrahedron becomes elongated to form the handed swing arm. The extended swing arm autonomously moves along the predefined track consisting of entropy-tetrahedron by consecutive strand displacement under the aid of fuel-tetrahedron. As a result, many (entropy-tetrahedron)-(fuel-tetrahedron) complexes are assembled for combining the DSNA tags. This results in an amplified electrochemical signal, typically measured at around -0.63 V (Ag/AgCl). The use of an enzyme-free FNA nanomachine and of DSNA tags warrants outstandingly high stability and sensitivity. The method shows a broad dynamic correlation of telomerase activity in cell extracts. The analytical range extends from 10 to 1.0 × 104 HeLa cells mL-1 with a lower detection limit of 2 cells mL-1. The differences in telomerase activity between different cancer cells can be easily evaluated. The method was further verified by quantifying telomerase activity of cancer cells in accumulated normal cells. Therefore, the sensing method has great potential for clinical application. Graphical abstractSchematic representation of the electrochemical biosensor based on target induced framework nucleic acid nanomachine with doxorubicin-spherical nucleic acids (DSNA) tags, which can be used to the determination of telomerase activity in accumulated normal cells. dNTP: Deoxynucleotide triphosphates; FT: Fuel-tetrahedron.
Collapse
|
35
|
Zhou H, Duan S, Huang J, He F. An ultrasensitive electrochemical biosensor for Pseudomonas aeruginosa assay based on a rolling circle amplification-assisted multipedal DNA walker. Chem Commun (Camb) 2020; 56:6273-6276. [DOI: 10.1039/d0cc01619e] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An ultrasensitive electrochemical biosensor was developed based on RCA and multipedal DNA walking strategy for the assay of 16S rRNA gene, and it has great application potential in food safety, environmental monitoring, and disease diagnosis.
Collapse
Affiliation(s)
- Huang Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Shaoyun Duan
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Ji Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| | - Fengjiao He
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- College of Chemistry and Chemical Engineering
- Hunan University
- Changsha
- P. R. China
| |
Collapse
|
36
|
Yang F, Li X, Li J, Xiang Y, Yuan R. Target-triggered activation of rolling circle amplification for label-free and sensitive fluorescent uracil-DNA glycosylase activity detection and inhibition. Talanta 2019; 204:812-816. [DOI: 10.1016/j.talanta.2019.06.065] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 05/28/2019] [Accepted: 06/17/2019] [Indexed: 01/17/2023]
|
37
|
Zhang YP, Cui YX, Li XY, Du YC, Tang AN, Kong DM. A modified exponential amplification reaction (EXPAR) with an improved signal-to-noise ratio for ultrasensitive detection of polynucleotide kinase. Chem Commun (Camb) 2019; 55:7611-7614. [DOI: 10.1039/c9cc03568k] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We reported a modified exponential amplification reaction strategy and applied it to design an ultrasensitive biosensor for the detection of endogenous polynucleotide kinase activity at single-cell level.
Collapse
Affiliation(s)
- Yu-Peng Zhang
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| | - Yun-Xi Cui
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| | - Xiao-Yu Li
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| | - Yi-Chen Du
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| | - An-Na Tang
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| | - De-Ming Kong
- State Key Laboratory of Medicinal Chemical Biology
- Tianjin Key Laboratory of Biosensing and Molecular Recognition
- Research Center for Analytical Sciences
- College of Chemistry
- Nankai University
| |
Collapse
|
38
|
Wang Y, Yang L, Wang Y, Liu W, Li B, Jin Y. Target-controlled in situ formation of G-quadruplex DNAzyme for a sensitive visual assay of telomerase activity. Analyst 2019; 144:5959-5964. [DOI: 10.1039/c9an01271k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A sensitive visual assay was developed for detecting telomerase activity based on the telomerase-controlled in situ formation of G-quadruplex-hemin DNAzyme. The telomerase activity of 5 HeLa cells per μL was visually detected in human serum.
Collapse
Affiliation(s)
- Yaocai Wang
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
| | - Luzhu Yang
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
| | - Yanjun Wang
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
| | - Wei Liu
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
| | - Baoxin Li
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
| | - Yan Jin
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
| |
Collapse
|