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Li J, Chen M, Jiang Q, Zhang W, Lan Y, Ahmed MM, Ma C, Huang J, Xu Q. Upgraded and Light-Up Biosensing Platform: Entropy-Driven Catalysis Circuit Manipulates the Configuration Transformation of Novel DNA Silver Nanoclusters on the Graphene Oxide Surface. Anal Chem 2024; 96:9209-9217. [PMID: 38769607 DOI: 10.1021/acs.analchem.4c01338] [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: 05/22/2024]
Abstract
To tackle the predicament of the traditional turn-off mechanism, exploring an activated turn-on system remains an intriguing and crucial objective in biosensing fields. Herein, a dark DNA Ag nanocluster (NC) with hairpin-structured DNA containing a six-base cytosine loop (6C loop) as a template is atypically synthesized. Intriguingly, the dark DNA Ag NCs can be lit to display strong red-emission nanoclusters. Building upon these exciting findings, an unprecedented and upgraded turn-on biosensing system [entropy-driven catalysis circuit (EDCC)-Ag NCs/graphene oxide (GO)] has been created, which employs an EDCC to precisely manipulate the conformational transition of DNA Ag NCs on the GO surface from adsorption to desorption. Benefiting from the effective quenching of GO and signal amplification capability of the EDCC, the newly developed EDCC-Ag NCs/GO biosensing system displays a high signal-to-background (S/B) ratio (26-fold) and sensitivity (limit of detection as low as 0.4 pM). Meanwhile, it has good specificity, excellent stability, and reliability in both buffer and biological samples. To the best of our knowledge, it is the first example that adopts an EDCC to precisely modulate the configuration transformation of DNA Ag NCs on the GO surface to obtain a biosensor with low background, strong fluorescence, high contrast, and sensitivity. This exciting finding may provide a new route to fabricate a novel turn-on biosensor based on hairpin-templated DNA Ag NCs in the optical imaging and bioanalytical fields.
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Affiliation(s)
- Jing Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Minhui Chen
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Qi Jiang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Wei Zhang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Yiting Lan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Md Maruf Ahmed
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Cheng Ma
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Jin Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, P. R. China
| | - Qin Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
- Institute of Innovation Materials and Energy, School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
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Zhou B, Khan IM, Ding X, Niazi S, Zhang Y, Wang Z. Fluorescent DNA-Silver nanoclusters in food safety detection: From synthesis to application. Talanta 2024; 273:125834. [PMID: 38479031 DOI: 10.1016/j.talanta.2024.125834] [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: 01/07/2024] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 04/09/2024]
Abstract
In recent years, the conventional preparation of silver nanoclusters (AgNCs) has attracted much attention due to their ultra-small size, tunable fluorescence, easy-to-engineer, as well as biocompatible material. Moreover, its great affinity towards cytosine bases on single-stranded DNA has led to the construction of biosensors, especially aptamers, for a broad variety of applications in food safety and environmental protection. In past years, numerous researchers paid attention to the construction of AgNCs aptasensor. Therefore, this review will be an effort to summarize the synthetic strategy along with the influences of factors on synthesis, categorize the sensing mechanism of aptamer-functionalized AgNCs biosensors, as well as their specific applications in food safety detection including heavy metal, toxin, and foodborne pathogenic bacteria. Furthermore, a brief conclusion and outlook regarding the prospects and challenges of their applications in food safety were drawn in line with the developments in DNA-AgNCs.
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Affiliation(s)
- Bingxuan Zhou
- State Key Laboratory of Food Science and Resources, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China
| | - Imran Mahmood Khan
- Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute, University of Nottingham Ningbo China, Ningbo, 315100, China.
| | - Xiaowei Ding
- State Key Laboratory of Food Science and Resources, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China
| | - Sobia Niazi
- State Key Laboratory of Food Science and Resources, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China
| | - Yin Zhang
- Key Laboratory of Meat Processing of Sichuan, Chengdu University, Chengdu, 610106, PR China
| | - Zhouping Wang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; School of Food Science and Technology, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; International Joint Laboratory on Food Safety, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; Collaborative Innovation Center of Food Safety and Quality Control, Jiangnan University, Lihu Road 1800, Wuxi, 214122, PR China; Key Laboratory of Meat Processing of Sichuan, Chengdu University, Chengdu, 610106, PR China.
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García-Guzmán C, Morales-Narváez E, Coutino-Gonzalez E. Bioactive Luminescent Silver Clusters Confined in Zeolites Enable Quick and Wash-Free Biosensing. Angew Chem Int Ed Engl 2023; 62:e202307718. [PMID: 37782257 DOI: 10.1002/anie.202307718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 09/27/2023] [Accepted: 10/02/2023] [Indexed: 10/03/2023]
Abstract
The simultaneous capture and detection of biomolecules is crucial for revolutionizing bioanalytical platforms in terms of portability, response time and cost-efficiency. Herein, we demonstrate how the sensitivity to external stimuli and changes in the local electronic environment of silver clusters lead to an advantageous biosensing platform based on the fluorometric response of bioactive luminescent silver clusters (BioLuSiC) confined in faujasite X zeolites functionalized with antibodies. The photoluminescence response of BioLuSiC was enhanced upon immunocomplex formation, empowering a wash-free and quick biodetection system offering optimal results from 5 min. Proteins and pathogens (immunoglobulin G and Escherichia coli) were targeted to demonstrate the biosensing performance of BioLuSiC, and a human serum titration assay was also established. BioLuSiC will pave the way for innovative bioanalytical platforms, including real-time monitoring systems, point-of-care devices and bioimaging techniques.
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Affiliation(s)
- Cecilia García-Guzmán
- Centro de Investigaciones en Óptica, A. C., Loma del Bosque 115, Lomas del Campestre, León, Guanajuato, 37150, Mexico
| | - Eden Morales-Narváez
- Biophotonic Nanosensors Laboratory, Centro de Física Aplicada y Tecnología Avanzada (CFATA), Universidad Nacional Autónoma de México (UNAM), Querétaro, 76230, Mexico
| | - Eduardo Coutino-Gonzalez
- Sustainable Materials Unit, VITO, Flemish Institute for Technological Research, Boeretang 200, Mol, B-2400, Belgium
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He J, Luo S, Deng H, Yang C, Zhang Y, Li M, Yuan R, Xu W. Fluorescent Features and Applicable Biosensing of a Core-Shell Ag Nanocluster Shielded by a DNA Tetrahedral Nanocage. Anal Chem 2023; 95:14805-14815. [PMID: 37738392 DOI: 10.1021/acs.analchem.3c03151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
The DNA frame structure as a natural shell to stably shield the sequence-templated Ag nanocluster core (csAgNC) is intriguing yet challenging for applicable fluorescence biosensing, for which the elaborate programming of a cluster scaffold inside a DNA-based cage to guide csAgNC nucleation might be crucial. Herein, we report the first design of a symmetric tetrahedral DNA nanocage (TDC) that was self-assembled in a one-pot process using a C-rich csAgNC template strand and four single strands. Inside the as-constructed soft TDC architecture, the template sequence was logically bridged from one side to another, not in the same face, thereby guiding the in situ synthesis of emissive csAgNC. Because of the strong electron-repulsive capability of the negatively charged TDC, the as-formed csAgNC displayed significantly improved fluorescence stability and superb spectral behavior. By incorporating the recognizable modules of targeted microRNAs (miRNAs) in one vertex of the TDC, an updated TDC (uTDC) biosensing platform was established via the photoinduced electron transfer effect between the emissive csAgNC reporter and hemin/G-quadruplex (hG4) conjugate. Because of the target-interrupted csAgNC switching in three states with the spatial proximity and separation to hG4, an "on-off-on" fluorescing signal response was executed, thus achieving a wide linear range to miRNAs and a limit of detection down to picomoles. Without complicated chemical modifications, this simpler and more cost-effective strategy offered accurate cell imaging of miRNAs, further suggesting possible therapeutic applications.
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Affiliation(s)
- Jiayang He
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Shihua Luo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Huilin Deng
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Chunli Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Yuqing Zhang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Mengdie Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Wenju Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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5
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Fredrick D, Yourston L, Krasnoslobodtsev AV. Detection of cancer-associated miRNA using a fluorescence switch of AgNC@NA and guanine-rich overhang sequences. LUMINESCENCE 2023; 38:1385-1392. [PMID: 36843363 DOI: 10.1002/bio.4471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 02/03/2023] [Accepted: 02/18/2023] [Indexed: 02/28/2023]
Abstract
DNA-templated silver nanoclusters (AgNC@DNA) are a novel type of nanomaterial with advantageous optical properties. Only a few atoms in size, the fluorescence of nanoclusters can be tuned using DNA overhangs. In this study, we explored the properties of AgNCs manufactured on a short single-stranded (dC)12 when adjacent G-rich sequences (dGN , with N = 3-15) were added. The 'red' emission of AgNC@dC12 with λMAX = 660 nm dramatically changed upon the addition of a G-rich overhang with NG = 15. The pattern of the emission-excitation matrix (EEM) suggested the emergence of two new emissive states at λMAX = 575 nm and λMAX = 710 nm. The appearance of these peaks provides an effective way to design biosensors capable of detecting specific nucleic acid sequences with low fluorescence backgrounds. We used this property to construct an NA-based switch that brings AgNC and the G overhang near one another, turning 'ON' the new fluorescence peaks only when a specific miRNA sequence is present. Next, we tested this detection switch on miR-371, which is overexpressed in prostate cancer. The results presented provide evidence that this novel fluorescent switch is both sensitive and specific with a limit of detection close to 22 picomoles of the target miR-371 molecule.
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Affiliation(s)
- Dylan Fredrick
- Department of Physics, University of Nebraska Omaha, 6001 Dodge Street, Omaha, Nebraska, USA
| | - Liam Yourston
- Department of Physics, University of Nebraska Omaha, 6001 Dodge Street, Omaha, Nebraska, USA
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Gupta AK, Krasnoslobodtsev AV. DNA-Templated Silver Nanoclusters as Dual-Mode Sensitive Probes for Self-Powered Biosensor Fueled by Glucose. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1299. [PMID: 37110883 PMCID: PMC10145323 DOI: 10.3390/nano13081299] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 04/04/2023] [Accepted: 04/05/2023] [Indexed: 06/19/2023]
Abstract
Nanomaterials have been extensively explored in developing sensors due to their unique properties, contributing to the development of reliable sensor designs with improved sensitivity and specificity. Herein, we propose the construction of a fluorescent/electrochemical dual-mode self-powered biosensor for advanced biosensing using DNA-templated silver nanoclusters (AgNCs@DNA). AgNC@DNA, due to its small size, exhibits advantageous characteristics as an optical probe. We investigated the sensing efficacy of AgNCs@DNA as a fluorescent probe for glucose detection. Fluorescence emitted by AgNCs@DNA served as the readout signal as a response to more H2O2 being generated by glucose oxidase for increasing glucose levels. The second readout signal of this dual-mode biosensor was utilized via the electrochemical route, where AgNCs served as charge mediators between the glucose oxidase (GOx) enzyme and carbon working electrode during the oxidation process of glucose catalyzed by GOx. The developed biosensor features low-level limits of detection (LODs), ~23 μM for optical and ~29 μM for electrochemical readout, which are much lower than the typical glucose concentrations found in body fluids, including blood, urine, tears, and sweat. The low LODs, simultaneous utilization of different readout strategies, and self-powered design demonstrated in this study open new prospects for developing next-generation biosensor devices.
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Danai L, Rolband LA, Perdomo VA, Skelly E, Kim T, Afonin KA. Optical, structural and antibacterial properties of silver nanoparticles and DNA-templated silver nanoclusters. Nanomedicine (Lond) 2023; 18:769-782. [PMID: 37345552 PMCID: PMC10308257 DOI: 10.2217/nnm-2023-0082] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 06/06/2023] [Indexed: 06/23/2023] Open
Abstract
Silver nanoparticles (AgNPs) are increasingly considered for biomedical applications as drug-delivery carriers, imaging probes and antibacterial agents. Silver nanoclusters (AgNCs) represent another subclass of nanoscale silver. AgNCs are a promising tool for nanomedicine due to their small size, structural homogeneity, antibacterial activity and fluorescence, which arises from their molecule-like electron configurations. The template-assisted synthesis of AgNCs relies on organic molecules that act as polydentate ligands. In particular, single-stranded nucleic acids reproducibly scaffold AgNCs to provide fluorescent, biocompatible materials that are incorporable in other formulations. This mini review outlines the design and characterization of AgNPs and DNA-templated AgNCs, discusses factors that affect their physicochemical and biological properties, and highlights applications of these materials as antibacterial agents and biosensors.
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Affiliation(s)
- Leyla Danai
- Department of Chemistry, Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
| | - Lewis A Rolband
- Department of Chemistry, Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
| | | | - Elizabeth Skelly
- Department of Chemistry, Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
| | - Taejin Kim
- Physical Sciences Department, West Virginia University Institute of Technology, Beckley, WV 25801, USA
| | - Kirill A Afonin
- Department of Chemistry, Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
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Kateshiya MR, Desai ML, Malek NI, Kailasa SK. Advances in Ultra-small Fluorescence Nanoprobes for Detection of Metal Ions, Drugs, Pesticides and Biomarkers. J Fluoresc 2022; 33:775-798. [PMID: 36538145 DOI: 10.1007/s10895-022-03115-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 12/07/2022] [Indexed: 12/24/2022]
Abstract
Identification of trace level chemical species (drugs, pesticides, metal ions and biomarkers) plays key role in environmental monitoring. Recently, fluorescence assay has shown significant advances in detecting of trace level drugs, pesticides, metal ions and biomarkers in real samples. Ultra-small nanostructure materials (metal nanoclusters (NCs), quantum dots (QDs) and carbon dots (CDs)) have been integrated with fluorescence spectrometer for sensitive and selective analysis of trace level target analytes in various samples including environmental and biological samples. This review summarizes the properties of metal NCs and ligand chemistry for the fabrication of metal NCs. We also briefly summarized the synthetic routes for the preparation of QDs and CDs. Advances of ultra-small fluorescent nanosensors (NCs, QDs and CDs) for sensing of metal ions, drugs, pesticides and biomarkers in various sample matrices are briefly discussed. Additionally, we discuss the recent challenges and future perspectives of ultra-small materials as fluorescent sensors for assaying of wide variety of target analytes in real samples.
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Li M, He J, Shang X, Yang C, Zhang Y, Zuo S, Yuan R, Xu W. A Reciprocal-Amplifiable Fluorescence Sensing Platform via Replicated Hybridization Chain Reaction for Hosting Concatenated Multi-Ag Nanoclusters as Signal Reporter. Anal Chem 2022; 94:16427-16435. [DOI: 10.1021/acs.analchem.2c03782] [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]
Affiliation(s)
- Mengdie Li
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, PR China
| | - Jiayang He
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, PR China
| | - Xin Shang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, PR China
| | - Chunli Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, PR China
| | - Yuqing Zhang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, PR China
| | - Siyu Zuo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, PR China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, PR China
| | - Wenju Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, PR China
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A dual-stimuli responsive electrochemiluminescence biosensor for pathogenic bacterial sensing and killing in foods. Talanta 2022. [DOI: 10.1016/j.talanta.2022.124074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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11
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Zhang Y, Yang C, He J, Zuo S, Shang X, Gao J, Yuan R, Xu W. Target DNA-Activating Proximity-Localized Catalytic Hairpin Assembly Enables Forming Split-DNA Ag Nanoclusters for Robust and Sensitive Fluorescence Biosensing. Anal Chem 2022; 94:14947-14955. [PMID: 36269062 DOI: 10.1021/acs.analchem.2c02733] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Proximity-localized catalytic hairpin assembly (plCHA) is intriguing for rapid and sensitive assay of an HIV-specific DNA segment (T*). Using template-integrated green Ag nanoclusters (igAgNCs) as emitters, herein, we report the first design of a T*-activated plCHA circuit that is confined in a three-way-junction architecture (3WJA) for the fluorescence sensing of T*. To this end, the T*-recognizable complement is programmed in a stem-loop hairpin (H1), and two split template sequences of igAgNCs are separately overhung contiguous to the paired stems of H1 and another hairpin (H2). The hybridization among H1, H2, and two single-stranded linkers (L1 and L2) allows the stable construction of 3WJA. Upon presenting the input T*, the 3WJA-localized plCHA is operated through toehold-mediated strand displacements of H1 and H2 reactants, and T* is rationally displaced and repeatably recycled, analogous to a specific catalyst, inducing more hairpin assembly events. Resultantly, the hybridized products enable the collective combination of two splits in the parent scaffold for hosting igAgNCs, outputting T*-dependent fluorescence response. Because of 3WJA structural confinement, the spatial proximity of two reactive hairpins yielded high local concentrations to manipulate the plCHA operation, achieving rapider reaction kinetics via T*-catalyzed recycling than typical catalytic hairpin assembly (CHA). This simple assay strategy would open the arena to develop various plCHA-based circuits capable of modulating the fluorescence emission of igAgNCs for applicable biosensing and bioanalysis.
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Affiliation(s)
- Yuqing Zhang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Chunli Yang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Jiayang He
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Siyu Zuo
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Xin Shang
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Jiaxi Gao
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Ruo Yuan
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
| | - Wenju Xu
- Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing400715, P. R. China
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