1
|
Li T, Li X, Li X, Yang L, Wang H. Nanopore single-molecule detection of bleomycin via dumbbell DNA scission. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
2
|
Orientational screening of ssDNA-templated silver nanoclusters and application for bleomycin assay. Colloid Polym Sci 2021. [DOI: 10.1007/s00396-021-04890-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
3
|
Charoenpakdee C, Vilaivan T. Quenching of fluorescently labeled pyrrolidinyl peptide nucleic acid by oligodeoxyguanosine and its application in DNA sensing. Org Biomol Chem 2020; 18:5951-5962. [PMID: 32696797 DOI: 10.1039/d0ob01299h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
Quenching by nucleobases can significantly affect the fluorescence properties of many fluorophores. The quenching efficiency depends on the electronic properties of the fluorophore and adjacent nucleobases. In this study, we present a hitherto unreported high-efficiency quenching (up to 90%) of various fluorescently labeled pyrrolidinyl peptide nucleic acid (acpcPNA) probes by oligodeoxyguanosine (dGX). The quenching principle relies on the electrostatic interaction between the positively charged lysine-modified acpcPNA probe and the negatively charged oligodeoxyguanosine. The addition of stoichiometric quantities of a DNA target with the sequence complementary to the PNA probe restored the fluorescence to the original level. This was explained by the binding of the DNA to the PNA via a specific base pairing, which resulted in the separation of the oligodeoxyguanosine quencher from the fluorophore. Much less fluorescence restoration was observed in the DNA containing one or more mismatched bases. Applications of the oligodeoxyguanosine-quenched PNA probes for DNA sequence determination, including in multiplex formats, are demonstrated. The performance in terms of sensitivity and mismatch discrimination is comparable to classical PNA-based molecular beacons but without the need for double-labeling, which is expensive and presents solubility issues, or a dedicated quencher probe. This exemplifies a novel use of the unique electrostatic properties of PNA to develop a DNA sensing platform for DNA sequence determination.
Collapse
Affiliation(s)
- Chayan Charoenpakdee
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand.
| | - Tirayut Vilaivan
- Organic Synthesis Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Patumwan, Bangkok 10330, Thailand.
| |
Collapse
|
4
|
Song C, Hong W, Zhang X, Lu Y. Label-free and sensitive detection of Ochratoxin A based on dsDNA-templated copper nanoparticles and exonuclease-catalyzed target recycling amplification. Analyst 2019; 143:1829-1834. [PMID: 29594306 DOI: 10.1039/c8an00158h] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Ochratoxin A (OTA) is one of the most toxic mycotoxins and exists in various food commodities. Herein, a sensitive fluorescence method was developed for OTA detection which combines the advantages of label-free dsDNA-templated copper nanoparticles (CuNPs), high selectivity of OTA aptamer and high efficiency of exonuclease-catalyzed target recycling amplification. OTA aptamer was hybridized with its complementary DNA (cDNA), and the obtained dsDNA acted as the template for fluorescent CuNPs. In the presence of its target (OTA), the aptamer prefers to form an OTA-aptamer complex in lieu of an aptamer-DNA duplex, which results in the dissociation of the aptamer-DNA duplex. The released cDNA and aptamer could be digested into mononucleotides by the RecJf exonuclease (single-stranded DNA specific exonuclease), and the target was liberated and could participate in the next reaction cycle. The above process resulted in the degradation of a large amount of template dsDNA, which prevented the synthesis of CuNPs, thus resulting in low fluorescence of the system. Based on this strategy, a label-free and sensitive detection of OTA was developed with a low detection limit of 5 ng mL-1 (S/N = 3). Our strategy was further validated and evaluated successfully by assaying OTA in real samples. The proposed assay has great potential as an OTA quantification method for use in the food safety field.
Collapse
Affiliation(s)
- Chunxia Song
- Department of Applied Chemistry, School of Science, Anhui Agricultural University, Hefei 230036, China.
| | | | | | | |
Collapse
|
5
|
Ma L, Han X, Xia L, Kong RM, Qu F. A G-triplex based molecular beacon for label-free fluorescence "turn-on" detection of bleomycin. Analyst 2019; 143:5474-5480. [PMID: 30288517 DOI: 10.1039/c8an01208c] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Since bleomycins (BLMs) play a prominent role in the clinical treatment of various cancers, the development of convenient and sensitive detection assays for BLM is of great significance in cancer therapy and related biological mechanism research. Here, taking advantage of the easily controllable and excitation of the G-triplex DNA structure, we reported a facile, label-free G-triplex based functional molecular beacon (G3MB) sensing system for fluorescence "turn-on" detection of BLM based on BLM-Fe(ii) mediated DNA strand scission. In the presence of BLM, the stable hairpin structure of G3MB undergoes an irreversible cleavage in the loop region that contains a 5'-GT-3' recognition site for BLM. The released G-tract DNA fragment self-assembles into a G-triplex-ThT complex showing a strong fluorescence. Owing to the effective locking of G-tracts in the stem of the G3MB and the specific DNA strand scission by BLM which is like a key for the release of G-tracts, the assay shows high sensitivity and selectivity with a detection limit of 0.2 nM. In addition, satisfactory results were obtained for the detection of BLM in human serum samples. Critically, the convenient "mix-and-detect" protocol, fast response and no need for modifying DNA offered a potential application of the proposed strategy for BLM assay in biomedical and clinical studies.
Collapse
Affiliation(s)
- Lin Ma
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu Shandong 273165, P. R. China.
| | | | | | | | | |
Collapse
|
6
|
Ma L, Gao W, Han X, Qu F, Xia L, Kong RM. A label-free and fluorescence turn-on assay for sensitive detection of hyaluronidase based on hyaluronan-induced perylene self-assembly. NEW J CHEM 2019. [DOI: 10.1039/c8nj06343e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A label-free and fluorescence turn-on assay for sensitive detection of HAase based on HA–PDI nanoaggregates was reported.
Collapse
Affiliation(s)
- Lin Ma
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Wenjuan Gao
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Xue Han
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Fengli Qu
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Lian Xia
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Rong-Mei Kong
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| |
Collapse
|
7
|
Zhou N, Yang L, Hu B, Song Y, He L, Chen W, Zhang Z, Liu Z, Lu S. Core–Shell Heterostructured CuFe@FeFe Prussian Blue Analogue Coupling with Silver Nanoclusters via a One-Step Bioinspired Approach: Efficiently Nonlabeled Aptasensor for Detection of Bleomycin in Various Aqueous Environments. Anal Chem 2018; 90:13624-13631. [DOI: 10.1021/acs.analchem.8b03850] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Nan Zhou
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University,No. 1, Jianshe East Road, Zhengzhou 450052, People’s Republic of China
| | - Longyu Yang
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry,No. 136, Science Avenue, Zhengzhou 450001, People’s Republic of China
| | - Bin Hu
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry,No. 136, Science Avenue, Zhengzhou 450001, People’s Republic of China
| | - Yingpan Song
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry,No. 136, Science Avenue, Zhengzhou 450001, People’s Republic of China
| | - Linghao He
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry,No. 136, Science Avenue, Zhengzhou 450001, People’s Republic of China
| | - Weizhe Chen
- The Center of Quality Supervision and Inspection of Xuchang, Xuchang 461000, People’s Republic of China
| | - Zhihong Zhang
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry,No. 136, Science Avenue, Zhengzhou 450001, People’s Republic of China
| | - Zhongyi Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450000, People’s Republic of China
| | - Siyu Lu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450000, People’s Republic of China
| |
Collapse
|
8
|
Molecular beacon-templated silver nanoclusters as a fluorescent probe for determination of bleomycin via DNA scission. Mikrochim Acta 2018; 185:403. [DOI: 10.1007/s00604-018-2939-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 07/29/2018] [Indexed: 10/28/2022]
|
9
|
Zhang D, Hu J, Yang XY, Wu Y, Su W, Zhang CY. Target-initiated synthesis of fluorescent copper nanoparticles for the sensitive and label-free detection of bleomycin. NANOSCALE 2018; 10:11134-11142. [PMID: 29873380 DOI: 10.1039/c8nr02780c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fluorescent copper nanoparticles (CuNPs) have received great attention due to their distinct characteristics of facile synthesis, tunable fluorescence emission, high photostability, and biological compatibility, and they have been widely used for chemical and biological analyses. Bleomycins (BLMs) are widely used antitumor agents for the clinical treatment of various cancers. Here, we develop a sensitive and label-free fluorescence method for the quantitative detection of BLM on the basis of BLM-initiated enzymatic polymerization-mediated synthesis of fluorescent CuNPs. We design two hairpin DNAs: one (Hp1) for the recognition of BLM and the other (Hp2) for signal amplification. In the presence of BLM, it may recognize and cleave the 5'-GC-3' site of the Hp1 stem, releasing the 8-17 DNAzyme fragment. The resultant 8-17 DNAzyme fragments may bind with the loop of Hp2 to form a partial double-stranded DNA (dsDNA) duplex, initiating the cyclic cleavage of Hp2 in the presence of Zn2+-dependent DNAzymes and generating numerous new DNA fragments with the free 3'-OH terminal, which can induce the formation of a poly(thymine) (poly-T) sequence with the assistance of terminal deoxynucleotidyl transferase (TdTase). Subsequently, the ploy-T sequence may function as the template for the synthesis of CuNPs with strong fluorescence emission. This method shows good selectivity and high sensitivity with a detection limit as low as 8.1 × 10-16 M, and it exhibits good performance in serum samples. Moreover, this method has distinct advantages of simplicity and low cost, holding great potential in clinical diagnosis and biomedical research.
Collapse
Affiliation(s)
- Dandan 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, China.
| | | | | | | | | | | |
Collapse
|
10
|
Broto M, Galve R, Marco MP. Bioanalytical methods for cytostatic therapeutic drug monitoring and occupational exposure assessment. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.05.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
11
|
Pei H, Zheng Y, Kong R, Xia L, Qu F. Niche nanoparticle-based FRET assay for bleomycin detection via DNA scission. Biosens Bioelectron 2016; 85:76-82. [DOI: 10.1016/j.bios.2016.04.085] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 04/25/2016] [Accepted: 04/26/2016] [Indexed: 12/11/2022]
|