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Pang H, Peng Y, Zhang R, Gao Z, Lai X, Li D, Zhao X, Wang Y, Pei H, Qiao B, Ji Y, Wu Q. A triggered DNA nanomachine with enzyme-free for the rapid detection of telomerase activity in a one-step method. Anal Chim Acta 2024; 1299:342420. [PMID: 38499416 DOI: 10.1016/j.aca.2024.342420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 01/08/2024] [Accepted: 02/26/2024] [Indexed: 03/20/2024]
Abstract
BACKGROUND Telomerase is considered a biomarker for the early diagnosis and clinical treatment of cancer. The rapid and sensitive detection of telomerase activity is crucial to biological research, clinical diagnosis, and drug development. However, the main obstacles facing the current telomerase activity assay are the cumbersome and time-consuming procedure, the easy degradation of the telomerase RNA template and the need for additional proteases. Therefore, it is necessary to construct a new method for the detection of telomerase activity with easy steps, efficient reaction and strong anti-interference ability. RESULTS Herein, an efficient, enzyme-free, economical, sensitive, fluorometric detection method for telomerase activity in one-step, named triggered-DNA (T-DNA) nanomachine, was created based on target-triggered DNAzyme-cleavage activity and catalytic molecular beacon (CMB). Telomerase served as a switch and extended few numbers of (TTAGGG)n repeat sequences to initiate the signal amplification in the T-DNA nanomachine, resulting in a strong fluorescent signal. The reaction was a one-step method with a shortened time of 1 h and a constant temperature of 37 °C, without the addition of any protease. It also sensitively distinguished telomerase activity in various cell lines. The T-DNA nanomachine offered a detection limit of 12 HeLa cells μL-1, 9 SK-Hep-1 cells μL-1 and 3 HuH-7 cells μL-1 with a linear correlation detection range of 0.39 × 102-6.25 × 102 HeLa cells μL-1 for telomerase activity. SIGNIFICANCE In conclusion, our study demonstrated that the triggered-DNA nanomachine fulfills the requirements for rapid detection of telomerase activity in one-step under isothermal and enzyme-free conditions with excellent specificity, and its simple and stable structure makes it ideal for complex systems. These findings indicated the application prospect of DNA nanomachines in clinical diagnostics and provided new insights into the field of DNA nanomachine-based bioanalysis.
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Affiliation(s)
- Huajie Pang
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Yanan Peng
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Rui Zhang
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Zhijun Gao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Xiangde Lai
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Dongxia Li
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Xuan Zhao
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Yuanyuan Wang
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China; Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China
| | - Hua Pei
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China
| | - Bin Qiao
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China; Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China.
| | - Yuxiang Ji
- The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China; Key Laboratory of Tropical Translational Medicine of Ministry of Education, NHC Key Laboratory of Tropical Disease Control, Hainan Medical University, Haikou, 571199, China.
| | - Qiang Wu
- The First Affiliated Hospital, Hainan Medical University, Haikou, 570102, China; The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou, 570311, China; Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou, 571199, China.
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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.
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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
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Tang X, Chen T, Ma Y, Mao C, Hu S, Zhang R, Yan Y, Pan Q, Feng C, Zhu X. Enzyme Reaction-Assisted Programmable Transcriptional Switches for Bioactive Molecule Detection. Anal Chem 2024; 96:331-338. [PMID: 38127443 DOI: 10.1021/acs.analchem.3c04198] [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: 12/23/2023]
Abstract
Bioactive molecules are highly worthwhile to recognize and explore the latent pathogenic mechanism. Conventional methods for bioactive molecule detection, including mass spectrometry and fluorescent probe imaging, are limited due to the complex processing and signal interference. Here, we designed enzyme-reaction-assisted programmable transcriptional switches for the detection of bioactive molecules. The approach is based on the use of programmable enzyme site-specific cleavage-assisted DNA triplex-based conformational switches that, upon responding to bioactive molecules, can trigger the transcription of fluorescent light-up aptamers. Thanks to the programmable nature of the sensing platform, the method can be adapted to different bioactive molecules, and we demonstrated the enzyme-small molecule catalytic reaction combination of myeloperoxidase (MPO)-hydrogen peroxide (H2O2) as a model that transcriptional switches was capable of detecting H2O2 and possessed the specificity and anti-interference ability in vitro. Furthermore, we successfully applied the switches into cells to observe the detection feasibility in vivo, and dynamically monitored changes of H2O2 in cellular oxidative stress levels. Therefore, we attempt to amalgamate the advantages of enzyme reaction with the pluripotency of programmable transcriptional switches, which can take both fields a step further, which may promote the research of biostimuli and the construction of DNA molecular devices.
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Affiliation(s)
- Xiaochen Tang
- Department of Clinical Laboratory Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P. R. China
- Faculty of Medical Laboratory Science, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P. R. China
- Shanghai Key Laboratory of Clinical Molecular Diagnostics for Pediatrics, Shanghai 200127, P. R. China
| | - Tianshu Chen
- Department of Clinical Laboratory Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P. R. China
- Shanghai Key Laboratory of Clinical Molecular Diagnostics for Pediatrics, Shanghai 200127, P. R. China
| | - Yonggeng Ma
- Center for Molecular Recognition and Biosensing, Shanghai Engineering Research Center of Organ Repair, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Changqing Mao
- Center for Molecular Recognition and Biosensing, Shanghai Engineering Research Center of Organ Repair, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Song Hu
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai 200072, P. R. China
| | - Runchi Zhang
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai 200072, P. R. China
| | - Yilin Yan
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai 200072, P. R. China
| | - Qiuhui Pan
- Department of Clinical Laboratory Medicine, Shanghai Children's Medical Center, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P. R. China
- Faculty of Medical Laboratory Science, College of Health Science and Technology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, P. R. China
- Shanghai Key Laboratory of Clinical Molecular Diagnostics for Pediatrics, Shanghai 200127, P. R. China
| | - Chang Feng
- Center for Molecular Recognition and Biosensing, Shanghai Engineering Research Center of Organ Repair, School of Life Sciences, Shanghai University, Shanghai 200444, P. R. China
| | - Xiaoli Zhu
- Department of Clinical Laboratory Medicine, Shanghai Tenth People's Hospital of Tongji University, Shanghai 200072, P. R. China
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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.
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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.
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5
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Saretzki G. Measuring telomerase activity using TRAP assays. Methods Cell Biol 2023; 181:127-149. [PMID: 38302235 DOI: 10.1016/bs.mcb.2022.12.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Telomerase is a reverse transcriptase that consists of the telomerase reverse transcriptase (TERT) protein and the telomerase RNA component TERC which also harbors the template region for telomere synthesis. In its canonical function the enzyme adds single-stranded telomeric hexanucleotides de novo to the ends of linear chromosomes, telomeres, in telomerase-positive cells such as germline, stem- and cancer cells. This potential biochemical activity of telomerase can be measured with the help of a telomerase repeat amplification protocol (TRAP) which often includes a PCR amplification due to the low abundance of telomerase in most cells and tissues. The current chapter describes various TRAP methods to detect telomerase activity (TA) using gel-based methods, its advantages and deficits, how to perform an ELISA-based TRAP assay and how best to interpret its results. Since development of the TRAP assay in 1994, there have been numerous modifications and adaptations of the method from real-time PCR analysis, isothermal amplification and nanotechnology to CRISPR/Cas-based methods which will be briefly mentioned. However, it is not possible to cover all different TRAP methods and thus there is no comprehensiveness claimed by this chapter. Instead, the author describes various aspects of using TRAP assays including required controls, sample preparation, etc. in order to avoid pitfalls and set-backs in applying this rather complex and demanding technique. The TRAP assay is particularly important to support clinical diagnosis of cancer, analyze tumor therapy as well as to evaluate various approaches to inhibit TA as a form of anti-cancer therapy.
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Affiliation(s)
- Gabriele Saretzki
- Biosciences Institute, Newcastle University, Campus for Ageing and Vitality, Newcastle upon Tyne, United Kingdom.
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6
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Davis JA, Reyes AV, Nitika, Saha A, Wolfgeher DJ, Xu SL, Truman AW, Li B, Chakrabarti K. Proteomic analysis defines the interactome of telomerase in the protozoan parasite, Trypanosoma brucei. Front Cell Dev Biol 2023; 11:1110423. [PMID: 37009488 PMCID: PMC10061497 DOI: 10.3389/fcell.2023.1110423] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 03/03/2023] [Indexed: 03/17/2023] Open
Abstract
Telomerase is a ribonucleoprotein enzyme responsible for maintaining the telomeric end of the chromosome. The telomerase enzyme requires two main components to function: the telomerase reverse transcriptase (TERT) and the telomerase RNA (TR), which provides the template for telomeric DNA synthesis. TR is a long non-coding RNA, which forms the basis of a large structural scaffold upon which many accessory proteins can bind and form the complete telomerase holoenzyme. These accessory protein interactions are required for telomerase activity and regulation inside cells. The interacting partners of TERT have been well studied in yeast, human, and Tetrahymena models, but not in parasitic protozoa, including clinically relevant human parasites. Here, using the protozoan parasite, Trypanosoma brucei (T. brucei) as a model, we have identified the interactome of T. brucei TERT (TbTERT) using a mass spectrometry-based approach. We identified previously known and unknown interacting factors of TbTERT, highlighting unique features of T. brucei telomerase biology. These unique interactions with TbTERT, suggest mechanistic differences in telomere maintenance between T. brucei and other eukaryotes.
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Affiliation(s)
- Justin A. Davis
- Department of Biological Sciences, University of North Carolina, Charlotte, NC, United States
| | - Andres V. Reyes
- Department of Plant Biology and Carnegie Mass Spectrometry Facility, Carnegie Institution for Science, Stanford, CA, United States
| | - Nitika
- Department of Biological Sciences, University of North Carolina, Charlotte, NC, United States
| | - Arpita Saha
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, College of Arts and Sciences, Cleveland State University, Cleveland, OH, United States
| | - Donald J. Wolfgeher
- Department of Molecular Genetics and Cell Biology, The University of Chicago, Chicago, IL, United States
| | - Shou-Ling Xu
- Department of Plant Biology and Carnegie Mass Spectrometry Facility, Carnegie Institution for Science, Stanford, CA, United States
| | - Andrew W. Truman
- Department of Biological Sciences, University of North Carolina, Charlotte, NC, United States
| | - Bibo Li
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, College of Arts and Sciences, Cleveland State University, Cleveland, OH, United States
| | - Kausik Chakrabarti
- Department of Biological Sciences, University of North Carolina, Charlotte, NC, United States
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7
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Wang H, Wang S, Wang H, Liang Y, Li Z. Sensitive and amplification-free detection of telomerase activity by self-extension of telomerase and trans-cleavage of CRISPR/Cas12a. Talanta 2023. [DOI: 10.1016/j.talanta.2022.123999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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8
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Zhang Q, Yuan ZZ, Zhang X, Zhang Y, Zou X, Ma F, Zhang CY. Entropy-Driven Self-Assembly of Single Quantum Dot Sensor for Catalytic Imaging of Telomerase in Living Cells. Anal Chem 2022; 94:18092-18098. [PMID: 36519804 DOI: 10.1021/acs.analchem.2c04747] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Telomerase is a highly valuable cancer diagnosis biomarker and a promising cancer therapy target. So far, most telomerase assays are limited by the involvement of tedious procedures, multiple enzymes, and complicated reaction schemes. Sensitive monitoring of low-abundant telomerase in living cells remains a challenge. Herein, we demonstrate an entropy-driven catalytic assembly of quantum dot (QD) sensors for accurate detection and imaging of telomerase activity in living cells. In this sensor, target telomerase specifically catalyzes extension of telomerase primer, and the extended primer subsequently acts as a catalyst to continuously initiate entropy-driven catalytic reaction, generating a large number of fluorophore- and biotin-labeled DNAs that can be self-assembled on the QD surface to induce an efficient Föster resonance energy transfer signal. The proposed sensor requires a single step for both recognition and amplification of the telomerase signal, eliminating the use of either protein enzymes or laborious procedures. Taking advantage of the inherent superiority of single-molecule fluorescence detection and high amplification efficiency of the entropy-driven reaction, this sensor demonstrates single-cell sensitivity for the in vitro assay. Moreover, it is capable of screening the telomerase inhibitor, discriminating different tumor cells from normal ones, and even real-time imaging telomerase in living cells, providing a novel platform for telomerase-associated cancer diagnosis and drug screening.
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Affiliation(s)
- Qian Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan250014, China
| | - Zhen-Zhen Yuan
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan250014, China
| | - Xinyi Zhang
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan528458, China
| | - Yan Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan250014, China
| | - Xiaoran Zou
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan250014, China
| | - Fei Ma
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing211189, China
| | - Chun-Yang Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan250014, China
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Fang B, Shen Y, Peng B, Bai H, Wang L, Zhang J, Hu W, Fu L, Zhang W, Li L, Huang W. Small‐Molecule Quenchers for Förster Resonance Energy Transfer: Structure, Mechanism, and Applications. Angew Chem Int Ed Engl 2022; 61:e202207188. [DOI: 10.1002/anie.202207188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Bin Fang
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
- State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University 127 West Youyi Road Xi'an 710072 China
| | - Yu Shen
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Bo Peng
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Hua Bai
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Limin Wang
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Jiaxin Zhang
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Wenbo Hu
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
| | - Li Fu
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
- State Key Laboratory of Solidification Processing School of Materials Science and Engineering Northwestern Polytechnical University 127 West Youyi Road Xi'an 710072 China
| | - Wei Zhang
- Teaching and Evaluation Center of Air Force Medical University Xi'an 710032 China
| | - Lin Li
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
- The Institute of Flexible Electronics (IFE, Future Technologies) Xiamen University Xiamen 361005, Fujian China
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering (IBME) Northwestern Polytechnical University Xi'an 710072 China
- The Institute of Flexible Electronics (IFE, Future Technologies) Xiamen University Xiamen 361005, Fujian China
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10
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Liu W, Fan Z, Li L, Li M. DNA-Based Nanoprobes for Simultaneous Detection of Telomerase and Correlated Biomolecules. Chembiochem 2022; 23:e202200307. [PMID: 35927933 DOI: 10.1002/cbic.202200307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/02/2022] [Indexed: 11/12/2022]
Abstract
Telomerase (TE), a ribonucleoprotein reverse transcriptase, is enzymatically activated in most tumor cells and is responsible for promoting tumor progression and malignancy by enabling replicative immortality of cancer cells. TE has become an important hallmark for cancer diagnosis and a potential therapy target. Therefore, accurate and in site detection of TE activity, especially the simultaneous imaging of TE activity and its correlated biomolecules, is highly essential to medical diagnostics and therapeutics. DNA-based nanoprobes, with their effective cell penetration capability and programmability, are the most advantageous for detection of intracellular TE activity. This concept article introduces the recent strategies for in situ sensing and imaging of TE activity, with a focus on simultaneous detection of TE and related biomolecules, and provides challenges and perspectives for the development of new strategies for such correlated imaging.
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Affiliation(s)
- Wenjing Liu
- Capital Medical University, Beijing Chest Hospital, CHINA
| | - Zetan Fan
- National Center for Nanoscience and Technology, cas key lab, CHINA
| | - Lele Li
- National Center for Nanoscience and Technology, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, 11 ZhongGuanCun BeiYiTiao, Haidian District, 100190, Beijing, CHINA
| | - Mengyuan Li
- University of Science and Technology Beijing, Chemistry, CHINA
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11
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Fang B, Shen Y, Peng B, Bai H, Wang L, Zhang J, Hu W, Fu L, Zhang W, Li L, Huang W. Small Molecule Quenchers for Förster Resonance Energy Transfer: Structure, Mechanism and Applications. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202207188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bin Fang
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Yu Shen
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Bo Peng
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Hua Bai
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Limin Wang
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Jiaxin Zhang
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Wenbo Hu
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Li Fu
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
| | - Wei Zhang
- Air Force Medical University Teaching and Evaluation Center CHINA
| | - Lin Li
- Nanjing Tech University Institute of Advanced Materials 30 South Puzhu Road 210008 Nanjing CHINA
| | - Wei Huang
- Northwestern Polytechnical University Frontiers Science Center for Flexible Electronics CHINA
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12
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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.
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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.
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13
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Yang Q, Chang X, Lee JY, Olivera TR, Saji M, Wisniewski H, Kim S, Zhang F. Recent Advances in Self-Assembled DNA Nanostructures for Bioimaging. ACS APPLIED BIO MATERIALS 2022; 5:4652-4667. [PMID: 35559619 DOI: 10.1021/acsabm.2c00128] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
DNA nanotechnology has been proven to be a powerful platform to assist the development of imaging probes for biomedical research. The attractive features of DNA nanostructures, such as nanometer precision, controllable size, programmable functions, and biocompatibility, have enabled researchers to design and customize DNA nanoprobes for bioimaging applications. However, DNA probes with low molecular weights (e.g., 10-100 nt) generally suffer from low stability in physiological buffer environments. To improve the stability of DNA nanoprobes in such environments, DNA nanostructures can be designed with relatively larger sizes and defined shapes. In addition, the established modification methods for DNA nanostructures are also essential in enhancing their properties and performances in a physiological environment. In this review, we begin with a brief recap of the development of DNA nanostructures including DNA tiles, DNA origami, and multifunctional DNA nanostructures with modifications. Then we highlight the recent advances of DNA nanostructures for bioimaging, emphasizing the latest developments in probe modifications and DNA-PAINT imaging. Multiple imaging modules for intracellular biomolecular imaging and cell membrane biomarkers recognition are also summarized. In the end, we discuss the advantages and challenges of applying DNA nanostructures in bioimaging research and speculate on its future developments.
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Affiliation(s)
- Qi Yang
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
| | - Xu Chang
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
| | - Jung Yeon Lee
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
| | - Tiffany R Olivera
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
| | - Minu Saji
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
| | - Henry Wisniewski
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
| | - Suchan Kim
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
| | - Fei Zhang
- Department of Chemistry, Rutgers University, Newark, New Jersey 07102, United States
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14
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Fan G, Li X, Xu S, Dai C, Xue Q, Wang H. SERS-based copper-mediated signal amplification strategy for simple and sensitive detection of telomerase activity. Talanta 2021; 235:122814. [PMID: 34517670 DOI: 10.1016/j.talanta.2021.122814] [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: 07/22/2021] [Revised: 08/14/2021] [Accepted: 08/17/2021] [Indexed: 11/28/2022]
Abstract
Simple and sensitive detection of telomerase activity is of vital importance for both early diagnosis and therapy of malignant tumors. Inspired by DNA-biobarcode amplification reported by Chad A. Mirkin, we developed a facile DNA-biobarcode-like SERS-based copper-mediated signal amplification strategy for sensitive detection of telomerase activity. In this strategy, a duplex DNA constructed by hybridization of a copper oxide nanoparticle (CuO NP)-labeled reporting sequence (RS) with the telomerase primer sequence (TS) is ingeniously designed, and anchored on the magnetic bead (MB) to build the CuO NPs-encoded magnetic bead (MB-CuO NPs) detection probe. Upon selective sensing of telomerase, telomerase elongation reaction and structure change of TS products make the CuO NP-RS displace and separate from MB. The separated CuO NPs are dissolved into a mass of Cu2+, which prompt monodisperse dopamine-functionalized AgNPs (D-AgNPs) signal probe into aggregation, resulting in color changes and significantly enhancing of SERS signal. The SERS signal increases with the increase of Cu2+, which is directly proportional to the telomerase. Benefiting from the transformation of CuO NP to Cu2+ with a high amplification effect, this strategy could realize the telomerase activity measurement down to 3 HeLa cells and a dynamic range of 10-10000 cells. It shows a significant improvement of sensitivity without need for other enzymes and elaborate design, which escapes from the complicated manipulations and design in polymerase chain reaction (PCR) and DNA amplification techniques. Moreover, with this strategy, telomerase activities of different cell lines and telomerase inhibitors screening were successfully performed. Significantly, it can also be utilized for visual detection of telomerase, which validates the potential on-site application and its application as point-of-care testing (POCT) for efficient monitoring. Given the high-performance for telomerase analysis, the strategy has a promising application in biological detection and clinical diagnosis, as well as point-of-care tests.
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Affiliation(s)
- Guanli Fan
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China
| | - Xia Li
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China
| | - Shuling Xu
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China
| | - Caifeng Dai
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Ji'nan, 250012, Shandong, PR China.
| | - Qingwang Xue
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China.
| | - Huaisheng Wang
- Department of Chemistry, Liaocheng University, Liaocheng, 252059, Shandong, China
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15
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Dey A, Monroy-Eklund A, Klotz K, Saha A, Davis J, Li B, Laederach A, Chakrabarti K. In vivo architecture of the telomerase RNA catalytic core in Trypanosoma brucei. Nucleic Acids Res 2021; 49:12445-12466. [PMID: 34850114 PMCID: PMC8643685 DOI: 10.1093/nar/gkab1042] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 10/11/2021] [Accepted: 10/15/2021] [Indexed: 01/07/2023] Open
Abstract
Telomerase is a unique ribonucleoprotein (RNP) reverse transcriptase that utilizes its cognate RNA molecule as a template for telomere DNA repeat synthesis. Telomerase contains the reverse transcriptase protein, TERT and the template RNA, TR, as its core components. The 5'-half of TR forms a highly conserved catalytic core comprising of the template region and adjacent domains necessary for telomere synthesis. However, how telomerase RNA folding takes place in vivo has not been fully understood due to low abundance of the native RNP. Here, using unicellular pathogen Trypanosoma brucei as a model, we reveal important regional folding information of the native telomerase RNA core domains, i.e. TR template, template boundary element, template proximal helix and Helix IV (eCR4-CR5) domain. For this purpose, we uniquely combined in-cell probing with targeted high-throughput RNA sequencing and mutational mapping under three conditions: in vivo (in WT and TERT-/- cells), in an immunopurified catalytically active telomerase RNP complex and ex vivo (deproteinized). We discover that TR forms at least two different conformers with distinct folding topologies in the insect and mammalian developmental stages of T. brucei. Also, TERT does not significantly affect the RNA folding in vivo, suggesting that the telomerase RNA in T. brucei exists in a conformationally preorganized stable structure. Our observed differences in RNA (TR) folding at two distinct developmental stages of T. brucei suggest that important conformational changes are a key component of T. brucei development.
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Affiliation(s)
- Abhishek Dey
- Department of Biological Sciences, University of North Carolina, Charlotte, NC 28223, USA
| | - Anais Monroy-Eklund
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Kaitlin Klotz
- Department of Biological Sciences, University of North Carolina, Charlotte, NC 28223, USA
| | - Arpita Saha
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, College of Sciences and Health Professions, Cleveland State University, Cleveland, OH 44115, USA
| | - Justin Davis
- Department of Biological Sciences, University of North Carolina, Charlotte, NC 28223, USA
| | - Bibo Li
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, College of Sciences and Health Professions, Cleveland State University, Cleveland, OH 44115, USA
| | - Alain Laederach
- Department of Biology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Kausik Chakrabarti
- To whom correspondence should be addressed. Tel: +1 704 687 1882; Fax: +1 704 687 1488;
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16
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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.
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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.
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17
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Wang R, Li J, Jin R, Ye Q, Cheng L, Liu R. Nonradioactive direct telomerase activity detection using biotin-labeled primers. J Clin Lab Anal 2021; 35:e23800. [PMID: 33960443 PMCID: PMC8183940 DOI: 10.1002/jcla.23800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 02/22/2021] [Accepted: 03/02/2021] [Indexed: 12/05/2022] Open
Abstract
Background Telomerase is a ribonucleoprotein enzyme responsible for maintenance of telomere length which expressed in more than 85% of cancer cells but undetectable in most normal tissue cells. Therefore, telomerase serves as a diagnostic marker of cancers. Two commonly used telomerase activity detection methods, the telomerase repeated amplification protocol (TRAP) and the direct telomerase assay (DTA), have disadvantages that mainly arise from reliance on PCR amplification or the use of an isotope. A safe, low‐cost and reliable telomerase activity detection method is still lacking. Method We modified DTA method using biotin‐labeled primers (Biotin‐DTA) and optimized the method by adjusting cell culture temperature and KCl concentration. The sensitivity of the method was confirmed to detect endogenous telomerase activity. The reliability was verified by detection of telomerase activity of published telomerase regulators. The stability was confirmed by comparing the method with TRAP method. Results Cells cultured in 32°C and KCl concentration at 200 mM or 250 mM resulted in robust Biotin‐DTA signal. Endogenous telomerase activity can be detected, which suggested an similar sensitivity as DTA using radioactive isotope markers. Knockdown of telomerase assembly regulator PES1 and DKC1 efficiently reduced telomerase activity. Compared with TRAP method, Biotin‐DTA assay offers greater signal stability over a range of analyte protein amounts. Conclusion Biotin‐labeled, PCR‐free, and nonradioactive direct telomerase assay is a promising new method for the easy, low‐cost, and quantitative detection of telomerase activity.
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Affiliation(s)
- Ruiguan Wang
- Faculty of Hepato-Pancreato-Biliary Surgery, Chinese PLA General Hospital, Beijing, China.,Medical school of Chinese PLA, Beijing, China
| | - Jiangbo Li
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing, China
| | - Rui Jin
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing, China
| | - Qinong Ye
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing, China
| | - Long Cheng
- Department of Medical Molecular Biology, Beijing Institute of Biotechnology, Beijing, China
| | - Rong Liu
- Faculty of Hepato-Pancreato-Biliary Surgery, Chinese PLA General Hospital, Beijing, China.,Medical school of Chinese PLA, Beijing, China
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18
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Silver-amplified fluorescence immunoassay via aggregation-induced emission for detection of disease biomarker. Talanta 2021; 225:121963. [DOI: 10.1016/j.talanta.2020.121963] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 11/24/2020] [Accepted: 12/01/2020] [Indexed: 11/19/2022]
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19
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Chen S, Zhao J, Shi B, Xu C, Zhao S. An ultrasensitive chemiluminescence strategy based on a microchip platform for telomerase detection at a single-cell level. Chem Commun (Camb) 2021; 57:3095-3098. [PMID: 33625437 DOI: 10.1039/d1cc00455g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An ultrasensitive chemiluminescence strategy based on signal amplification with a microchip platform was proposed to detect telomerase. This strategy was successfully applied to the determination of lysate samples from HL-7702, HeLa, A549 and MCF-7 cell lines with the detection limit lower than 1 HeLa cell.
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Affiliation(s)
- Shengyu Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China.
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20
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Yang J, Dong P, Wang Y, Liu T, Huang Y, Lei J. A stepwise recognition strategy for the detection of telomerase activity via direct electrochemical analysis of metal-organic frameworks. Analyst 2021; 146:1859-1864. [PMID: 33443249 DOI: 10.1039/d0an02233k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The detection of telomerase is of great significance for monitoring cell canceration. The conventional methods depend on the extension of telomerase towards its primer to conduct signal transduction. Herein, a specific and reliable detection strategy based on stepwise recognition was developed for tandem detection of metal ions and enzymes. We first synthesized an electrically active metal-organic framework (MIL-101(Fe)), which can act directly as a signal reporter in phosphate buffered saline after being modified with capture DNA (cDNA). When the zinc ion is added as a coenzyme factor, the modified hairpin DNA on the electrode is cleaved by DNAzyme to yield the activated primer. After the addition of telomerase, the cleaved DNA strand would be extended, and the resulting sequence will be hybridized with the signal label of MIL-101(Fe)-cDNA. Therefore, a signal-on strategy for the detection of telomerase was achieved based on the direct electrochemical analysis of MIL-101(Fe). Moreover, this electrochemical biosensor can discriminate telomerase activity among different cell lines. The stepwise recognition ensured the advantages of an electrochemical biosensor such as high sensitivity and specificity during the detection process, providing a novel method for monitoring and diagnosis of diseases.
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Affiliation(s)
- Jiarui Yang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China.
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21
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Shen F, Zhang C, Cai Z, Wang J, Zhang X, Machuki JO, Cui L, Li S, Gao F. Carbon Nanocage/Fe 3O 4/DNA-Based Magnetically Targeted Intracellular Imaging of Telomerase via Catalyzed Hairpin Assembly and Photodynamic-Photothermal Combination Therapy of Tumor Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53624-53633. [PMID: 33211962 DOI: 10.1021/acsami.0c13925] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Human telomerase has been identified as a potential tumor biomarker for early cancer diagnosis and cancer progression monitoring. We construct a novel magnetic targeting carbon nanocage/Fe3O4/DNA (CNC/Fe3O4/DNA) nanoprobe for intracellular imaging of telomerase via the signal amplification strategy catalyzed hairpin assembly (CHA) and for photodynamic-photothermal therapy of tumor cells. Telomerase primer DNA, trigger DNA, hairpin DNA1 (H1), and hairpin DNA2 (H2) were adsorbed to the surface of CNC/Fe3O4 nanoparticles (CNC/Fe3O4 NPs), and the fluorescence of (chlorin e6) Ce6 was quenched by CNC/Fe3O4 NPs. After entering the living cell through magnetic targeting, the telomerase primer DNA can be extended in the presence of highly activated telomerase, leading to the issue of trigger DNA, which can initiate the CHA cycling process followed by the amplification of the fluorescence intensity. The in vitro detection results justified that the proposed nanoprobe showed good sensitivity and selectivity for telomerase. Confocal microscopy studies indicated that such a nanoprobe can be used to detect the activity of telomerase in living cells and the fluorescence signal was stronger under the guidance of a magnetic field. We successfully employed this nanoprobe to monitor the dynamic activity of telomerase in various types of tumor cells and normal cells and to damage tumor cells by photodynamic-photothermal combination therapy, which evidenced that this is a promising biological method for early cancer diagnosis and tumor cell therapy.
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Affiliation(s)
- Fuzhi Shen
- Jiangsu Key Laboratory of Brain Disease and Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Caiyi Zhang
- The Affiliated Xuzhou Oriental Hospital of Xuzhou Medical University, Xuzhou 221004, China
| | - Zhiheng Cai
- Jiangsu Key Laboratory of Brain Disease and Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Jiwei Wang
- Jiangsu Key Laboratory of Brain Disease and Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Xing Zhang
- Jiangsu Key Laboratory of Brain Disease and Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Jeremiah Ong'achwa Machuki
- Jiangsu Key Laboratory of Brain Disease and Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Lin Cui
- Chemical Engineering and Materials Science, Shandong Normal University, 250014 Jinan, China
| | - Shibao Li
- School of Medical Technology, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
| | - Fenglei Gao
- Jiangsu Key Laboratory of Brain Disease and Bioinformation, Xuzhou Medical University, Xuzhou, Jiangsu 221004, China
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22
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Cheng M, Xiong E, Tian T, Zhu D, Ju HQ, Zhou X. A CRISPR-driven colorimetric code platform for highly accurate telomerase activity assay. Biosens Bioelectron 2020; 172:112749. [PMID: 33160233 DOI: 10.1016/j.bios.2020.112749] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/20/2020] [Accepted: 10/19/2020] [Indexed: 12/26/2022]
Abstract
Telomeric repeat amplification protocol (TRAP) has been the most widely used method for assessing the telomerase activity from cells and tissues. However, cell lysates, body fluid samples, or tumor tissue samples often contain high concentrations of protein or other complex matrices, which are usually inhibiting the TRAP response, thus leading to false-negative results. Internal control (IC) involved TRAP enables reliable telomerase activity assay but requires time consuming and laborious electrophoretic separation to visualize telomeric repeat DNA and internal control products from TRAP reaction, severely limiting its application in clinical diagnosis. Herein, a colorimetric code system based on programmable CRISPR-Cas12a technology and gold nano-particles (AuNPs) probe has been developed to analyse telomeric repeat DNA and internal control in TRAP products, enabling the rapid detection of telomerase activity and identification of false-negatives with naked-eye. We transform the detection results into three typical colorimetric codes-positive (P), negative (N) and false-negative (FN), making the judgement of detection results more convenient and user-friendly. The platform has also been applied in accurate detection of clinical liver cancer specimens for telomerase activity with a detection sensitivity of 93.75% and a specificity of 93.75% based on Youden index analysis. As a proof of concept, we further demonstrated the feasibility of Cas9-mediated triple-line lateral flow assay (TL-LFA), which enabled the detection of telomeric repeat DNA and internal control on a single triple-line test strip, achieving convenient and accurate telomerase activity assay.
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Affiliation(s)
- Meng Cheng
- School of Life Science & College of Biophotonics, South China Normal University, Guangzhou, 510631, PR China
| | - Erhu Xiong
- School of Life Science & College of Biophotonics, South China Normal University, Guangzhou, 510631, PR China
| | - Tian Tian
- School of Life Science & College of Biophotonics, South China Normal University, Guangzhou, 510631, PR China
| | - Debin Zhu
- Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, School of Chemistry, South China Normal University, Guangzhou, 510006, China
| | - Huai-Qiang Ju
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, PR China.
| | - Xiaoming Zhou
- School of Life Science & College of Biophotonics, South China Normal University, Guangzhou, 510631, PR China.
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Zhang B, Shi L, Liu W, Li B, Jin Y. Sensitive detection of intracellular telomerase activity via double signal amplification and ratiometric fluorescence resonance energy transfer. Analyst 2020; 145:6992-6999. [PMID: 32869791 DOI: 10.1039/d0an01291b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
As an important and universal tumor marker, the reliable and in situ detection of intracellular telomerase activity is crucial for cancer diagnosis. Herein, a ratiometric fluorescence resonance energy transfer (FRET) method was developed for detecting intracellular telomerase activity. It takes full advantage of manganese dioxide nanosheets (MnO2NS) that can carry DNA probes with different conformations into cells and then completely release the DNA probes via decomposition of MnO2NS by intracellular reduced glutathione (GSH). In the presence of telomerase, a telomere substrate (TS) could be extended to form long telomerase extension products (TEPs), which trigger the cycling strand displacement reaction (SDR) between two fluorophore-labeled hairpin DNA probes to form lots of DNA duplexes. The close contact of two fluorophores led to an effective ratiometric FRET for reliable detection of telomerase activity. Fluorescence confocal imaging demonstrated that the activity of telomerase in tumor cells was reliably detected. The inhibition of telomerase activity by an inhibitor resulted in a decrease in FRET signal. For extracellular detection, the FRET ratio (FA/FD) shows a good linear relationship with the number of HeLa cells in the range of 20-1000 cells. Therefore, it offers a more facile method for reliable and sensitive detection of intracellular telomerase activity.
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Affiliation(s)
- Bei Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, China.
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24
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Zhang Y, Zhang Y, Ma C, Fu G, Mu S, Liu X, Zhang H. Gelatin nanoparticles transport DNA probes for detection and imaging of telomerase and microRNA in living cells. Talanta 2020; 218:121100. [PMID: 32797867 DOI: 10.1016/j.talanta.2020.121100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/22/2020] [Accepted: 04/27/2020] [Indexed: 10/24/2022]
Abstract
Telomerase and microRNA (miRNA) are biomarkers closely related to tumors. Simultaneous detection of both markers can improve accuracy and reliability of early diagnosis. Based on the mechanism of fluorescence resonance energy transfer (FRET), two fluorescent DNA probes were designed for telomerase and miRNA-21. The probes were wrapped by gelatin through electrostatic interaction to form nanoparticles. After that, we synthesized molecularly imprinted coating of transferrin on the surface of gelatin nanoparticles, which can avoid the immune stress response and macrophage phagocytosis to help gelatin nanoparticles enter into the cells smoothly through endocytosis. Following with the degradation of gelatin in the cells, DNA probes were released to react with telomerase and miRNA-21 and lead to the change of the fluorescence signal. Thereby the simultaneous imaging of telomerase and miRNA-21 were successfully achieved in HeLa cells and HepG2 cells. The proposed strategy shows the simultaneous imaging for different biological markers with DNA probes by preventing them from being hydrolyzed with nucleases before the determination and achieves reliable method for early diagnosis of cancer.
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Affiliation(s)
- Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Yida Zhang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Chunmeng Ma
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Guoqing Fu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Shuai Mu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Xiaoyan Liu
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China
| | - Haixia Zhang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metals Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, PR China.
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25
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Kim HY, Lee CY, Kim H, Park KS, Park HG. Portable glucose meter-utilized label-free and washing-free telomerase assay. Analyst 2020; 145:5578-5583. [PMID: 32627768 DOI: 10.1039/d0an00655f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We herein describe a portable glucose meter (PGM)-utilized label-free and washing-free method for the facile determination of telomerase activity that relies on the kinase-catalyzed cascade enzymatic reaction (KCER) that transduces the telomerase activity to the glucose level. In the sensor, the telomerase that elongates telomere sequences ((TTAGGG)n) from the 3'-terminus of telomerase substrate primer (TSP) consumes deoxynucleoside triphosphate (dNTP), which serves as a phosphate source for KCER promoted by hexokinase and pyruvate kinase. Thus, the presence of telomerase protects KCER from working effectively, resulting in the maintenance of an initial, high glucose level that is readily determined using hand-held PGM. With this strategy, the telomerase activities in various types of cell lines were successfully determined with high sensitivity. Furthermore, the ability of this method to screen candidate inhibitors for telomerase activity was also verified.
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Affiliation(s)
- Hyo Yong Kim
- Department of Chemical and Biomolecular Engineering (BK21+ Program), KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
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26
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Kim DM, Yoo SM. DNA-modifying enzyme reaction-based biosensors for disease diagnostics: recent biotechnological advances and future perspectives. Crit Rev Biotechnol 2020; 40:787-803. [DOI: 10.1080/07388551.2020.1764485] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Dong Min Kim
- Center for Applied Life Science, Hanbat National University, Daejeon, Republic of Korea
| | - Seung Min Yoo
- School of Integrative Engineering, Chung-Ang University, Seoul, Republic of Korea
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27
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Huang S, Zhang Q, Yao H, Wang W, Zhang JR, Zhu JJ. Quantitative Detection and Imaging of Multiple Biological Molecules in Living Cells for Cell Screening. ACS Sens 2020; 5:1149-1157. [PMID: 32164417 DOI: 10.1021/acssensors.0c00170] [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] [Indexed: 12/18/2022]
Abstract
Because of insufficient information, a single biomarker is not sufficient for early diagnosis of cancer, whereas sensitive and selective detection of multiple biomolecules can significantly reduce analysis time, sample size, and accurately perform cell screening in early cancer. Therefore, the development of a noninvasive strategy that can simultaneously quantify multiple biomarkers (i.e., nucleic acids, proteins, and small molecules) in a single cell is particularly important. Herein, a universal sensing system (functional DNA@mesoporous silica nanoparticles (MSN)-Black Hole Quencher-rhodamine 6G (RhB), FDSBR), which is based on the combination of functionalized DNA and smart responsive nanomaterial, was successfully constructed. After incubation with the cells, different types of targets trigger the strand displacement reaction to release the fluorophore-labeled nucleic acids as the output signals to reflect the intracellular level of the telomerase and adenosine triphosphate (ATP), respectively. Simultaneously, intracellular miR-21 can be clearly indicated by the restored fluorescence of RhB when the caged double-stranded DNA was substituted into single-stranded DNA to open the pore. The concentrations of intracellular telomerase, miR-21, and ATP were identified successfully in three cell lines at the single-cell level. The results show that the contents of three biomolecules have significant differences in the three model cell lines and provide a promising route for developing innovative early disease diagnosis and cell screening assay.
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Affiliation(s)
- Shan Huang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Qianying Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Huiqin Yao
- Department of Chemistry, School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, China
| | - Wenjing Wang
- State Key Laboratory of Agricultural Microbiology, College of Science, Huazhong Agricultural University, Wuhan 430070, China
| | - Jian-Rong Zhang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
- School of Chemistry and Life Science, Nanjing University Jinling College, Nanjing 210089, China
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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28
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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.
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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
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29
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Bodulev OL, Sakharov IY. Isothermal Nucleic Acid Amplification Techniques and Their Use in Bioanalysis. BIOCHEMISTRY. BIOKHIMIIA 2020; 85:147-166. [PMID: 32093592 PMCID: PMC7223333 DOI: 10.1134/s0006297920020030] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 11/01/2019] [Accepted: 11/01/2019] [Indexed: 12/16/2022]
Abstract
Recently, there has been a rapid progress in the development of techniques for isothermal amplification of nucleic acids as an alternative to polymerase chain reaction (PCR). The advantage of these methods is that the nucleic acids amplification can be carried out at constant temperature, unlike PCR, which requires cyclic temperature changes. Moreover, isothermal amplification can be conducted directly in living cells. This review describes the principles of isothermal amplification techniques and demonstrates their high efficiency in designing new highly sensitive detection methods of nucleic acids and enzymes involved in their modifications. The data on successful application of isothermal amplification methods for the analysis of cells and biomolecules with the use of DNA/RNA aptamers are presented.
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Affiliation(s)
- O L Bodulev
- Lomonosov Moscow State University, Department of Chemistry, Moscow, 119991, Russia
| | - I Yu Sakharov
- Lomonosov Moscow State University, Department of Chemistry, Moscow, 119991, Russia.
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30
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Regulation of multiple energy transfer processes in a simple nano-system for sensitive telomerase detection. Anal Chim Acta 2020; 1097:135-143. [DOI: 10.1016/j.aca.2019.10.069] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 08/20/2019] [Accepted: 10/28/2019] [Indexed: 11/30/2022]
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31
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Newbigging AM, Zhang H, Le XC. Beacon-mediated exponential amplification reaction (BEAR) using a single enzyme and primer. Chem Commun (Camb) 2019; 55:10677-10680. [PMID: 31424057 DOI: 10.1039/c9cc04226a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Beacon-mediated Exponential Amplification Reaction (BEAR) enables isothermal, exponential signal amplification. BEAR uses only a single enzyme and a single primer. Detection of 0.2 amol of a mitochondrial DNA with a point mutation in less than an hour demonstrates an application of the BEAR technique for nucleic acid research.
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Affiliation(s)
- Ashley M Newbigging
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada.
| | - Hongquan Zhang
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada.
| | - X Chris Le
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada.
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32
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Fan H, Bai H, Liu Q, Xing H, Zhang XB, Tan W. Monitoring Telomerase Activity in Living Cells with High Sensitivity Using Cascade Amplification Reaction-Based Nanoprobe. Anal Chem 2019; 91:13143-13151. [DOI: 10.1021/acs.analchem.9b03410] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Huanhuan Fan
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, China
| | - Huarong Bai
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, China
| | - Qin Liu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, China
| | - Hang Xing
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan Provincial Key Laboratory of Biomacromolecular Chemical Biology, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Xiao-Bing Zhang
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, China
| | - Weihong Tan
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, China
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33
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Huang J, Zhu L, Ju H, Lei J. Telomerase Triggered DNA Walker with a Superhairpin Structure for Human Telomerase Activity Sensing. Anal Chem 2019; 91:6981-6985. [PMID: 31099242 DOI: 10.1021/acs.analchem.9b01603] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Different from conventional DNA walkers, we designed a telomerase-triggered three-dimensional DNA walker consisting of a superhairpin structure with a bulged loop in the stem as the walking strand and dye-labeled tracks for ultrasensitive detection of telomerase activity. In the presence of telomerase, the primers in the stem of the superhairpin structure were elongated and triggered internal strand displacement, thus activating the superhairpin structure. Subsequently, the open superhairpin structure as a swing arm was able to bind with the track, and the swing arm could be released by enzymatic cleavage of the binding duplex domain, resulting in the fluorescence recovery of dye-labeled fragments from the surface of gold nanoparticles. Based on signal amplification of the telomerase-triggered DNA walker, the walking device was further applied to various cancer lines with a low detection limit of telomerase activity equivalent to 90 cells μL-1 for HeLa cells. Moreover, the advantage of this DNA walker strategy was confirmed by calculating telomerase activity in a single cell. This telomerase-triggered DNA walker provides a new concept on signal transduction for telomerase detection and is anticipated to stimulate interest in DNA nanomachine design for bioanalysis.
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Affiliation(s)
- Jing Huang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China
| | - Longyi Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210023 , P. R. China
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34
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Dong P, Zhu L, Huang J, Ren J, Lei J. Electrocatalysis of cerium metal-organic frameworks for ratiometric electrochemical detection of telomerase activity. Biosens Bioelectron 2019; 138:111313. [PMID: 31108380 DOI: 10.1016/j.bios.2019.05.018] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 04/30/2019] [Accepted: 05/08/2019] [Indexed: 01/13/2023]
Abstract
A ratiometric electrochemical biosensor was constructed to detect telomerase activity based on electrocatalysis of cerium-based metal-organic frameworks (CeMOFs) and conformation switch of hairpin DNA. First, the CeMOFs were synthesized using Ce as nodes and 1,3,5-benzenetricarboxylic acid as linker in a green method, and then functionalized with gold nanoparticles. The resulted Au@CeMOF tags demonstrated an excellent electrocatalysis toward hydroquinone oxidation. Meanwhile, a methylene blue (MB) modified hairpin probe was designed with telomerase primer (TP) hybridized "stem" and immobilized on the electrode surface via Au-S chemistry. In the presence of the dNTPs and telomerase, the extended TP can open the hairpin DNA and keep the MB away from the electrode surface, resulting in a decrease of electrochemical signal. In the meantime, the TP-extended part could capture the Au@CeMOF-cDNA tags on the electrode surface via hybridization, leading to the increase electrochemical signal of hydroquinone oxidation catalyzed by Au@CeMOF-cDNA tags. Thus, a ratiometric signal output mode was developed for the electrochemical detection of telomerase activity. This biosensor showed wide dynamic correlation of telomerase activity from 2 × 102 to 2 × 106 cells mL-1 with the limit of detection of 27 cells mL-1, and was applied to evaluate telomerase activity in single cell. The ratiometric electrochemical strategy based on the catalysis of MOFs provides a new avenue on signal transduction in telomerase detection.
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Affiliation(s)
- Pengfei Dong
- School of Science, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China; State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Longyi Zhu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Jing Huang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Jujie Ren
- School of Science, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China.
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
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35
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Wang X, Yang D, Liu M, Cao D, He N, Wang Z. Highly sensitive fluorescence biosensor for intracellular telomerase detection based on a single patchy gold/carbon nanosphere via the combination of nanoflare and hybridization chain reaction. Biosens Bioelectron 2019; 137:110-116. [PMID: 31085399 DOI: 10.1016/j.bios.2019.05.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/13/2019] [Accepted: 05/02/2019] [Indexed: 11/18/2022]
Abstract
How to in situ detect intracellular telomerase activity with high sensitivity still faces many challenges. This paper constructs a new fluorescence biosensing platform for the sensitive detection of intracellular telomerase activity via the combination of nanoflare and hybridization chain reaction (HCR)-based signal amplification on a single patchy gold/carbon nanosphere (PG/CNS), which has two or more distinct parts and allows hybridized-DNA (HS-DNA/Primer-DNA/Flare-DNA) and H1/H2-DNA (a pair of cross complementary DNA hairpins) to bind onto their surfaces via Au-S bond and electrostatic interaction, respectively. In the presence of telomerase, Primer-DNA (telomerase primer) extends at its 3' end to produce a telomeric repeated sequence, resulting in the release of Flare-DNA followed by the recovery of the fluorescence. Subsequently, the released Flare-DNA further initiates cross hybridization of H1 and H2 DNA from mimic-HCR system to amplify the fluorescence signal. The in vivo confocal microscopy studies demonstrate that resulting sensor can enter into the cancer cells such as A549 cells, and lead to the increase in luminescence, which is stronger than the sensor without the HCR-based signal amplification system. A linear relationship between the fluorescence intensity and the amount of A549 cells is observed, and the limit of detection of the sensor reaches about 280 A549 cells.
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Affiliation(s)
- Xiaoxiao Wang
- Pharmaceutical Research Center, Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, China
| | - Dandan Yang
- Pharmaceutical Research Center, Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, China
| | - Mei Liu
- Pharmaceutical Research Center, Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, China
| | - Dongwei Cao
- Department of Nephrology, Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing, 210008, China.
| | - Nongyue He
- School of Biological Science and Medical Engineering, Southeast University, Nanjing, 210096, China.
| | - Zhifei Wang
- Pharmaceutical Research Center, Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, China.
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36
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Li X, Cui Y, Du Y, Tang A, Kong D. Label-Free Telomerase Detection in Single Cell Using a Five-Base Telomerase Product-Triggered Exponential Rolling Circle Amplification Strategy. ACS Sens 2019; 4:1090-1096. [PMID: 30945529 DOI: 10.1021/acssensors.9b00334] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Telomerase is a universal biomarker of malignant tumors. Sensitive and reliable analysis for telomerase activity is of vital importance for both early diagnosis and therapy of malignant tumors. Herein, a novel fluorescent strategy was proposed for sensitive and label-free detection of telomerase activity. One highlight of this strategy is that an exponential signal amplification can be triggered by a very short telomerase extension product (TEP). Without adding dATP, the designed telomerase primer can be easily controlled to extend five bases (GGGTT) to give short TEP with definite length. The resulting short TEP can then be constructed as a circular rolling circle amplification (RCA) template and thus initiate a nicking enzyme-mediated exponential RCA, producing G-rich amplification products that can be sensitively probed via specific binding between the fluorescent dye Thioflavin T (ThT) and the nucleic acid G-quadruplexes. Elevated telomerase translocation efficiency, combined with exponential signal amplification and specific probing of RCA products by ThT, endow the sensing platform with extraordinarily high detection sensitivity. The requirement for short TEP increases the possibility to analyze telomerase with low activity. The proposed sensing platform can achieve sensitive telomerase activity detection in individual cells, even with the interference of accumulated normal cells. It was also demonstrated to show excellent capability in screening for the inhibitors of telomerase. Therefore, the proposed sensing platform has great potential for not only clinical diagnosis but also anticancer drug development.
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Affiliation(s)
- XiaoYu 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, Tianjin, 300071, P. R. China
| | - YunXi 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, Tianjin, 300071, P. R. China
| | - YiChen 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, Tianjin, 300071, P. R. China
| | - AnNa 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, Tianjin, 300071, P. R. China
| | - DeMing 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, Tianjin, 300071, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300071, P. R. China
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37
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Ma F, Wang TT, Jiang L, Zhang CY. Ultrasensitive detection of telomerase activity in lung cancer cells with quencher-free molecular beacon-assisted quadratic signal amplification. Anal Chim Acta 2019; 1053:122-130. [DOI: 10.1016/j.aca.2018.11.058] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2018] [Revised: 11/27/2018] [Accepted: 11/30/2018] [Indexed: 10/27/2022]
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38
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Wang J, Zhang J, Li T, Shen R, Li G, Ling L. Strand displacement amplification-coupled dynamic light scattering method to detect urinary telomerase for non-invasive detection of bladder cancer. Biosens Bioelectron 2019; 131:143-148. [PMID: 30826649 DOI: 10.1016/j.bios.2019.02.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 01/29/2019] [Accepted: 02/01/2019] [Indexed: 11/28/2022]
Abstract
Despite huge successes achieved by strand displacement amplification (SDA) and gold nanoparticles (AuNPs) in biomolecules sensing, the strategy of combination of SDA and AuNPs-based dynamic light scattering (DLS) for a biomolecule sensing is unexplored. Here we developed a non-invasive, SDA-based DLS method for the diagnosis of bladder cancer by detecting telomerase activity in human urine. In the presence of telomerase, the telomerase substrate (TS) primer was elongated with repeating sequences of (TTAGGG)n, and the resulting product triggers SDA between the hairpin deoxyribonucleic acid (DNA) and the Primer. The SDA product can be recognized by the oligonucleotide-modified AuNPs probes, resulting in DLS measurable AuNPs aggregation. The assay displayed a detection limit of 3 MCF-7 cells with a signal-to-noise ratio of 3 in a dynamic range of 5-1000 cells. The method was simple, reliable and has been successfully applied in the detection of telomerase in urine with good accuracy, selectivity and reproducibility. Moreover, only urine samples from bladder cancer patients induced a significant change in the average hydrodynamic diameter, indicating practical applicability of the method for the non-invasive diagnosis of bladder cancer.
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Affiliation(s)
- Jing Wang
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Ji Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Sun Yat-Sen University Cancer Center, Guangzhou 510060, PR China
| | - Tingting Li
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Ruidi Shen
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Gongke Li
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Liansheng Ling
- School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, PR China.
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39
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Zhou Y, Shen S, Lau C, Lu J. A conformational switch-based fluorescent biosensor for homogeneous detection of telomerase activity. Talanta 2019; 199:21-26. [PMID: 30952248 DOI: 10.1016/j.talanta.2019.02.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 01/30/2019] [Accepted: 02/03/2019] [Indexed: 10/27/2022]
Abstract
As a universal tumor biomarker, research on the activity and inhibition of telomerase is of great importance for cancer diagnosis and therapy. Herein, we demonstrate the conformational switch-based fluorescence detection of telomerase activity using a redesigned RNA aptamer Spinach. Briefly, the original Spinach aptamer was extended at its 5' end and folded into an inactive conformation, where association with the small molecule fluorophore, 5-difluoro-4-hydroxybenzylidene imidazolinone (DFHBI) was prevented. Only in the presence of telomerase, (TTAGGG)n repeats were added to the 3' end of the telomerase substrate primer, and the elongation products hybridized with inactive Spinach molecules, triggering its conformational switch and refolding it into the active, DFHBI-binding conformation. Moreover, the fluorescence signal was further amplified through a target recycling circuit, where Ribonuclease H (RNase H) specifically hydrolyzed the phosphodiester bonds of RNA in the DNA-RNA hybrid. The released telomere products could then hybridize to new inactive Spinach molecules and initiate multiple amplification cycles. The proposed fluorescent biosensor presented great performance for telomerase activity detection from 100 to 5 × 104 Hela cells with a detection limit of 100 cells. Besides, this new assay offers a good biosensing platform for differentiation of cancer cell lines from normal cell line and evaluation the inhibition efficiency of telomere-binding ligand, which is of great importance for telomerase-related cancer diagnosis and therapy.
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Affiliation(s)
- Ying Zhou
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Shujuan Shen
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Choiwan Lau
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Jianzhong Lu
- School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China.
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40
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Liu C, Zhang S, Li X, Xue Q, Jiang W. Multi-code magnetic beads based on DNAzyme-mediated double-cycling amplification for a point-of-care assay of telomerase activity. Analyst 2019; 144:4241-4249. [DOI: 10.1039/c9an00589g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Development of a reliable and facile telomerase activity assay with high specificity and sensitivity is a central challenge to make telomerase testing a routine part of medical care with respect to cancer.
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Affiliation(s)
- Chunxue Liu
- Department of Chemistry
- Liaocheng University
- Liaocheng
- China
| | - Susu Zhang
- Department of Chemistry
- Liaocheng University
- Liaocheng
- China
| | - Xia Li
- Department of Chemistry
- Liaocheng University
- Liaocheng
- China
- School of Chemistry and Chemical Engineering
| | - Qingwang Xue
- Department of Chemistry
- Liaocheng University
- Liaocheng
- China
- School of Chemistry and Chemical Engineering
| | - Wei Jiang
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- P.R. China
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41
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Wang H, Wang H, Jia Y, Zhang M, Li Z. One-pot detection of telomerase activity with high sensitivity and specificity via RNA FRET probes and RNase H-assisted signal cycling amplification. RSC Adv 2019; 9:14817-14821. [PMID: 35516338 PMCID: PMC9064132 DOI: 10.1039/c9ra01816f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 04/28/2019] [Indexed: 11/23/2022] Open
Abstract
Human telomerase is a universal cancer biomarker and a promising anticancer therapeutic target. Sensitive and specific detection of telomerase activity is of great significance for cancer diagnosis and treatment. Up to now, many methods have been established to detect the activity of telomerase, but most of these methods require complex probe design and tedious experimental steps generally including telomere extension reaction, amplification of the extended products and signal detection. Herein, we propose a one-pot method to detect the telomerase activity via RNA FRET probes and RNase H-assisted signal cycling amplification, and the proposed assay can integrate the telomere extension reaction, signal amplification and readout in one step without requirement of amplification of the extended products, which greatly simplifies the experimental design and operation steps. Additionally, the proposed one-pot method has high sensitivity and can unequivocally detect the telomerase activity in as few as 5 cancer cells, which holds great potential in telomerase-related fundamental and clinical studies. A one-pot method is developed for the detection of telomerase activity via RNA FRET probes and RNase H-assisted signal cycling amplification.![]()
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Affiliation(s)
- Honghong Wang
- School of Chemistry and Biology Engineering
- University of Science and Technology Beijing
- Beijing
- P. R. China
| | - Hui Wang
- School of Chemistry and Biology Engineering
- University of Science and Technology Beijing
- Beijing
- P. R. China
| | - Yuting Jia
- School of Chemistry and Biology Engineering
- University of Science and Technology Beijing
- Beijing
- P. R. China
| | - Mai Zhang
- School of Chemistry and Biology Engineering
- University of Science and Technology Beijing
- Beijing
- P. R. China
| | - Zhengping Li
- School of Chemistry and Biology Engineering
- University of Science and Technology Beijing
- Beijing
- P. R. China
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42
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Zhu X, Ye H, Liu JW, Yu RQ, Jiang JH. Multivalent Self-Assembled DNA Polymer for Tumor-Targeted Delivery and Live Cell Imaging of Telomerase Activity. Anal Chem 2018; 90:13188-13192. [PMID: 30380845 DOI: 10.1021/acs.analchem.8b04631] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The efficient detection and in situ monitoring of telomerase activity is of great importance for cancer diagnosis and biomedical research. Here we report for the first time that the development of a novel multivalent self-assembled DNA polymer, constructed through telomerase primer sequence (ITS) triggered hybridization chain assembly using two functional hairpin probes (tumor-trageting aptamer modified H1 and signal probe modified H2), for sensitive detection and imaging of telomerase activity in living cells. After internalizing into the tumor cells by multivalent aptamer targeting, the ITS on DNA polymers can be elongated by intracellular telomerase to generate telomere repeat sequences that are complementary with the signal probe, which can proceed along the DNA polymers, and gradually light up the whole DNA polymers, leading to an enhanced fluorescence signal directly correlated with the activity of telomerase. Our results demonstrated that the developed DNA polymer show excellent performance for specifically detecting telomerase activity in cancer cells, dynamically monitoring the activity change of telomerase in response to telomerase-based drugs, and efficiently distinguishing cancer cells from normal cells. The proposed strategy may afford a valuable tool for the monitoring of telomerase activity in living cells and have great implications for biological and diagnostic applications.
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Affiliation(s)
- Xueli Zhu
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , Hunan 410082 , P. R. China
| | - Hongyan Ye
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , Hunan 410082 , P. R. China
| | - Jin-Wen Liu
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , Hunan 410082 , P. R. China
| | - Ru-Qin Yu
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , Hunan 410082 , P. R. China
| | - Jian-Hui Jiang
- Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering , Hunan University , Changsha , Hunan 410082 , P. R. China
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43
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Li CC, Hu J, Lu M, Zhang CY. Quantum dot-based electrochemical biosensor for stripping voltammetric detection of telomerase at the single-cell level. Biosens Bioelectron 2018; 122:51-57. [PMID: 30240966 DOI: 10.1016/j.bios.2018.09.049] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 08/30/2018] [Accepted: 09/12/2018] [Indexed: 11/15/2022]
Abstract
Human telomerase is responsible for the maintenance of chromosome end structures and is a valuable biomarker for malignant growth. However, the accurate measurement of telomerase activity at the single-cell level has remained a great challenge. Here we develop a simple quantum dot (QD)-based electrochemical biosensor for stripping voltammetric detection of telomerase activity at the single-cell level. We designed a thiol-modified capture DNA which may be immobilized on the gold electrode by the gold-sulfur bond. The presence of telomerase enables the addition of the telomere repeats of (TTAGGG)n to the 3' end of the primer, accompanied by the incorporation of abundant biotins in the extension product with the assistance of the biotin-tagged dATP. The subsequent hybridization of extension product with the capture DNA and the addition of streptavidin-coated QDs induce the assembly of large amounts of QDs onto the electrode via specific biotin-streptavidin binding. After the acidic dissolution of QDs, the released Cd (II) can be simply quantified by anodic stripping voltammetry (ASV). Due to the introduction of large amounts of QDs by telomerase-induced primer extension reaction and the synergistic signal amplification induced by the release of Cd (II) from the QDs, this biosensor can detect telomerase activity at the single-cell level without the involvement of any thermal cycling and extra enzymes for signal amplification. Moreover, this assay exhibits a large dynamic range over four orders of magnitude and it is very simple without the involvement of specific hairpin probe design and complicated labelling, holding great potential in point-of-need testing.
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Affiliation(s)
- Chen-Chen Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, PR China
| | - Juan Hu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, PR China
| | - Mengfei Lu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, PR China
| | - Chun-Yang Zhang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals, Shandong Normal University, Jinan 250014, PR China.
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44
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Wang C, Yang H, Wu S, Liu Y, Wei W, Zhang Y, Wei M, Liu S. Manifold methods for telomerase activity detection based on various unique probes. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.06.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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45
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Liu Z, Zhao J, Zhang R, Han G, Zhang C, Liu B, Zhang Z, Han MY, Gao X. Cross-Platform Cancer Cell Identification Using Telomerase-Specific Spherical Nucleic Acids. ACS NANO 2018; 12:3629-3637. [PMID: 29595962 DOI: 10.1021/acsnano.8b00743] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Distinguishing tumor cells from normal cells holds the key to precision diagnosis and effective intervention of cancers. The fundamental difficulties, however, are the heterogeneity of tumor cells and the lack of truly specific and ideally universal cancer biomarkers. Here, we report a concept of tumor cell detection, bypassing the specific genotypic and phenotypic features of different tumor cell types and directly going toward the hallmark of cancer, uncontrollable growth. Combining spherical nucleic acids (SNAs) with exquisitely engineered molecular beacons (SNA beacons, dubbed SNAB technology) is capable of identifying tumor cells from normal cells based on the molecular phenotype of telomerase activity, largely bypassing the heterogeneity problem of cancers. Owing to the cell-entry capability of SNAs, the SNAB probe readily achieves tumor cell detection across multiple platforms, ranging from solution-based assay, to single cell imaging and in vivo solid tumor imaging (unlike PCR that is restricted to cell lysates). We envision the SNAB technology will impact cancer diagnosis, therapeutic response assessment, and image-guided surgery.
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Affiliation(s)
- Zhengjie Liu
- CAS Center for Excellence in Nanoscience, Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Jun Zhao
- CAS Center for Excellence in Nanoscience, Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
| | - Ruilong Zhang
- School of Chemistry and Chemical Engineering , Anhui University , Hefei , Anhui 230601 , China
| | - Guangmei Han
- CAS Center for Excellence in Nanoscience, Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , China
| | - Cheng Zhang
- CAS Center for Excellence in Nanoscience, Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
| | - Bianhua Liu
- CAS Center for Excellence in Nanoscience, Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
| | - Zhongping Zhang
- CAS Center for Excellence in Nanoscience, Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
- School of Chemistry and Chemical Engineering , Anhui University , Hefei , Anhui 230601 , China
| | - Ming-Yong Han
- CAS Center for Excellence in Nanoscience, Institute of Intelligent Machines , Chinese Academy of Sciences , Hefei , Anhui 230031 , China
- Institute of Materials Research and Engineering , A-STAR , 3 Research Link , Singapore 117602
| | - Xiaohu Gao
- Department of Bioengineering , University of Washington , Seattle , Washington 98195 , United States
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46
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Wu W, Fan H, Lian X, Zhou J, Zhang T. Aligner-mediated cleavage-triggered exponential amplification for sensitive detection of nucleic acids. Talanta 2018; 185:141-145. [PMID: 29759180 DOI: 10.1016/j.talanta.2018.03.067] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/14/2018] [Accepted: 03/22/2018] [Indexed: 10/17/2022]
Abstract
Exponential amplification reaction (EXPAR), as a simple and high sensitive method, holds great promise in nucleic acids detection. One major challenge in EXPAR is the generation of trigger DNA with a definite 3'-end, which now relies on fingerprinting technology. However, the requirement of different endonucleases for varying target sequences and two head-to-head recognition sites in double stranded DNA, as well as the confinement of trigger DNA's 3'-end to be near/within the recognition site, usually subject EXPAR to compromised universality and/or repeated matching of reaction conditions. Herein, we report a simple and universal method for high sensitive detection of nucleic acids, termed aligner-mediated cleavage-triggered exponential amplification (AMCEA). The aligner-mediated cleavage (AMC) needs only one nicking endonuclease and can make a break at any site of choice in a programmable way. Thus, the 3'-end of target DNA can be easily redefined as required, a key step for initiating the amplification reaction. This capability endows the proposed AMCEA with excellent universality and simplicity. Moreover, it is sensitive and specific, with a detection limit at amol level, a broad dynamic range of 5~6 orders of magnitude and the ability to distinguish single nucleotide mutation. Experiments performed with human serum indicate that AMCEA is compatible with the complex biological sample, and thus has the potentials for practical applications.
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Affiliation(s)
- Wanghua Wu
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, PR China
| | - Hongliang Fan
- Department of Environmental Medicine, Institute of Hygiene, Zhejiang Academy of Medical Sciences, Hangzhou 310013, PR China
| | - Xiang Lian
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, PR China
| | - Jianguang Zhou
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, PR China
| | - Tao Zhang
- Research Center for Analytical Instrumentation, Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou 310027, PR China.
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47
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Wu W, Zhang T, Han D, Fan H, Zhu G, Ding X, Wu C, You M, Qiu L, Li J, Zhang L, Lian X, Hu R, Mu Y, Zhou J, Tan W. Aligner-mediated cleavage of nucleic acids and its application to isothermal exponential amplification. Chem Sci 2018; 9:3050-3055. [PMID: 29732089 PMCID: PMC5916018 DOI: 10.1039/c7sc05141g] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 02/21/2018] [Indexed: 12/19/2022] Open
Abstract
A programmable sequence-specific aligner-mediated cleavage endows strand displacement amplification with excellent universality, high sensitivity, high specificity and simple primer design.
We herein describe a simple and versatile approach to use conventional nicking endonuclease (NEase) for programmable sequence-specific cleavage of DNA, termed aligner-mediated cleavage (AMC), and its application to DNA isothermal exponential amplification (AMC-based strand displacement amplification, AMC-SDA). AMC uses a hairpin-shaped DNA aligner (DA) that contains a recognition site in its stem and two side arms complementary to target DNA. Thus, it enables the loading of an NEase on DA's stem, localization to a specific locus through hybridization of the side arms with target DNA, and cleavage thereof. By using just one NEase, it is easy to make a break at any specific locus and tune the cleavage site to the single-nucleotide scale. This capability also endows the proposed AMC-SDA with excellent universality, since the cleavage of target DNA, followed by a polymerase-catalyzed extension along a particular primer as a key step for initiating SDA, no longer relies on any special sequence. Moreover, this manner of initiation facilitates the adoption of 3′-terminated primers, thus making AMC-SDA highly sensitive and highly specific, as well as simple primer design.
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Affiliation(s)
- Wanghua Wu
- Research Center for Analytical Instrumentation , Institute of Cyber-Systems and Control , State Key Laboratory of Industrial Control Technology , Zhejiang University , Hangzhou 310027 , China .
| | - Tao Zhang
- Research Center for Analytical Instrumentation , Institute of Cyber-Systems and Control , State Key Laboratory of Industrial Control Technology , Zhejiang University , Hangzhou 310027 , China . .,Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA .
| | - Da Han
- Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA . .,Molecular Science and Biomedicine Laboratory , State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , College of Biology , Collaborative Innovation Center for Molecular Engineering for Theranostics , Hunan University , Changsha 410082 , China
| | - Hongliang Fan
- Research Center for Analytical Instrumentation , Institute of Cyber-Systems and Control , State Key Laboratory of Industrial Control Technology , Zhejiang University , Hangzhou 310027 , China . .,Department of Environmental Medicine , Institute of Hygiene , Zhejiang Academy of Medical Sciences , Hangzhou 310013 , China
| | - Guizhi Zhu
- Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA . .,Molecular Science and Biomedicine Laboratory , State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , College of Biology , Collaborative Innovation Center for Molecular Engineering for Theranostics , Hunan University , Changsha 410082 , China
| | - Xiong Ding
- Research Center for Analytical Instrumentation , Institute of Cyber-Systems and Control , State Key Laboratory of Industrial Control Technology , Zhejiang University , Hangzhou 310027 , China .
| | - Cuichen Wu
- Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA . .,Molecular Science and Biomedicine Laboratory , State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , College of Biology , Collaborative Innovation Center for Molecular Engineering for Theranostics , Hunan University , Changsha 410082 , China
| | - Mingxu You
- Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA .
| | - Liping Qiu
- Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA . .,Molecular Science and Biomedicine Laboratory , State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , College of Biology , Collaborative Innovation Center for Molecular Engineering for Theranostics , Hunan University , Changsha 410082 , China
| | - Juan Li
- Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA .
| | - Liqin Zhang
- Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA . .,Molecular Science and Biomedicine Laboratory , State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , College of Biology , Collaborative Innovation Center for Molecular Engineering for Theranostics , Hunan University , Changsha 410082 , China
| | - Xiang Lian
- Research Center for Analytical Instrumentation , Institute of Cyber-Systems and Control , State Key Laboratory of Industrial Control Technology , Zhejiang University , Hangzhou 310027 , China .
| | - Rong Hu
- Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA . .,Molecular Science and Biomedicine Laboratory , State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , College of Biology , Collaborative Innovation Center for Molecular Engineering for Theranostics , Hunan University , Changsha 410082 , China
| | - Ying Mu
- Research Center for Analytical Instrumentation , Institute of Cyber-Systems and Control , State Key Laboratory of Industrial Control Technology , Zhejiang University , Hangzhou 310027 , China .
| | - Jianguang Zhou
- Research Center for Analytical Instrumentation , Institute of Cyber-Systems and Control , State Key Laboratory of Industrial Control Technology , Zhejiang University , Hangzhou 310027 , China .
| | - Weihong Tan
- Center for Research at Bio/nano Interface , Department of Chemistry , Department of Physiology and Functional Genomics , Health Cancer Center , UF Genetics Institute and McKnight Brain Institute , University of Florida , Gainesville , Florida 32611-7200 , USA . .,Molecular Science and Biomedicine Laboratory , State Key Laboratory of Chemo/Biosensing and Chemometrics , College of Chemistry and Chemical Engineering , College of Biology , Collaborative Innovation Center for Molecular Engineering for Theranostics , Hunan University , Changsha 410082 , China
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48
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Xu X, Wang L, Li K, Huang Q, Jiang W. A Smart DNA Tweezer for Detection of Human Telomerase Activity. Anal Chem 2018; 90:3521-3530. [PMID: 29446916 DOI: 10.1021/acs.analchem.7b05373] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Reliable and accurate detection of telomerase activity is crucial to better understand its role in cancer cells and to further explore its function in cancer diagnosis and treatment. Here, we construct a smart DNA tweezer (DT) for detection of telomerase activity. The DT is assembled by three specially designed single-stranded oligonucleotides: a central strand dually labeled with donor/acceptor fluorophores and two arm strands containing overhangs complementary to telomerase reaction products (TRPs). It can get closed through hybridization with TRPs and get reopen through strand displacement reaction by TRPs' complementary sequences. First, under the action of telomerase, telomerase binding substrates (TS) are elongated to generate TRPs ended with telomeric repeats (TTAGGG) n. TRPs hybridize with the two arm overhangs cooperatively and strain DT to closed state, inducing an increased fluorescence resonance energy transfer (FRET) efficiency, which is utilized for telomerase activity detection. Second, upon introduction of a removal strand (RS) complementary to TRPs, the closed DT is relaxed to open state via the toehold-mediated strand displacement, inducing a decreased FRET efficiency, which is utilized for determination of TRP length distribution. The detection limit of telomerase activity is equivalent to 141 cells/μL for HeLa cells, and telomerase-active cellular extracts can be differentiated from telomerase-inactive cellular extracts. Furthermore, TRPs owning 1, 2, 3, 4, and ≥5 telomeric repeats are identified to account for 25.6%, 20.5%, 15.7%, 12.5%, and 25.7%, respectively. The proposed strategy will offer a new approach for reliable, accurate detection of telomerase activity and product length distribution for deeper studying its role and function in cancer.
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49
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Zhang L, Peng J, Hong MF, Chen JQ, Liang RP, Qiu JD. A facile graphene oxide-based fluorescent nanosensor for the in situ “turn-on” detection of telomerase activity. Analyst 2018; 143:2334-2341. [DOI: 10.1039/c8an00402a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A graphene oxide-based fluorescent nanosensor has been proposed for the quantitative detection of telomerase and in situ imaging of intracellular telomerase.
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Affiliation(s)
- Li Zhang
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Jie Peng
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Ming-Fang Hong
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Jia-Qing Chen
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Ru-Ping Liang
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
| | - Jian-Ding Qiu
- College of Chemistry
- Nanchang University
- Nanchang 330031
- China
- Department of Materials and Chemical Engineering
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50
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Li CC, Zhang Y, Liu WJ, Zhang CY. A triple-amplification strategy for sensitive detection of telomerase at the single-cell level. Chem Commun (Camb) 2018; 54:9317-9320. [DOI: 10.1039/c8cc05100c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We develop a triple-amplification strategy for sensitive detection of telomerase from cancer cells at the single-cell level.
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Affiliation(s)
- Chen-chen Li
- College of Chemistry
- Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals
| | - Yan Zhang
- College of Chemistry
- Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals
| | - Wen-jing Liu
- College of Chemistry
- Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals
| | - Chun-yang Zhang
- College of Chemistry
- Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
- Shandong Provincial Key Laboratory of Clean Production of Fine Chemicals
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