Article
Biochemistry & Molecular Biology
Lewis Rolband, Liam Yourston, Morgan Chandler, Damian Beasock, Leyla Danai, Seraphim Kozlov, Nolan Marshall, Oleg Shevchenko, Alexey Krasnoslobodtsev, Kirill A. Afonin
Summary: This study combines atomically precise metal nanoclusters with nucleic acid nanotechnology to create DNA-templated silver nanoclusters with reproducible fluorescent properties and antibacterial activity. Additionally, the use of cytosine-rich single-stranded DNA oligonucleotides improves stability, modulates antibacterial properties, and enhances the quality of observed fluorescent signals of the silver nanoclusters. The research characterizes the sequence-specific fluorescence and composition of four representative DNA-AgNCs, compares their antibacterial effectiveness at different pH levels, and evaluates cytotoxicity to various mammalian cell lines.
Article
Agriculture, Multidisciplinary
Jiahui Chen, Jianghua Liu, Di Wu, Ruiyuan Pan, Jian Chen, Yongning Wu, Mingquan Huang, Guoliang Li
Summary: In this study, a precisely regulated DNA-templated silver nanocluster (DNA-AgNC) sensor based on CRISPR/Cas12a was designed for sensitive detection of meat adulteration. The strategy achieved a satisfactory linear range and a low limit of detection, providing an accurate and efficient method for monitoring meat authenticity.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Chemistry, Analytical
Guowen Li, Xiufang Huang, Chifang Peng, Fengxia Sun
Summary: Through optimizing the synthesis of silver nanoclusters (Ag NCs) using DNA templates, it was found that the fluorescence intensity of T base-extended DNA-templated Ag NCs was more than three times higher than C-riched DNA-templated Ag NCs. A turn-off fluorescence sensor based on the brightest DNA-Ag NCs was constructed for the sensitive detection of dimethoate, ethion, and phorate in lake water samples.
Article
Spectroscopy
Lingyuan Liu, Qianyi Zhang, Feng Li, Mei Wang, Jing Sun, Shuyun Zhu
Summary: Fluorescent DNA-templated silver nanoclusters were synthesized and used as a novel probe for detecting D-penicillamine for the first time, showing high sensitivity and fast preparation process.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Spectroscopy
Shuyun Zhu, Lingyuan Liu, Jing Sun, Fengjin Shi, Xian-En Zhao
Summary: The authors developed a dual-emissive DNA-templated silver nanocluster (DNA-AgNCs) for ratiometric fluorescence sensing of bleomycin (BLM). By utilizing chameleon DNA-AgNCs, they proposed a sensitive ratiometric fluorescent strategy for BLM detection with a detection limit of 67 pM. This method was successfully applied to detect BLM in serum samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Biochemistry & Molecular Biology
Peng Li, Zhuohao Xie, Liuyan Zhuang, Liehua Deng, Jiahao Huang
Summary: A straightforward and convenient method was proposed to accurately monitor the levels of the cancer treatment drug Bleomycin. Copper nanoclusters synthesized from Poly-T DNA were used as fluorescence indicators for Bleomycin and its binding affinity effectively inhibited the fluorescence signals. The method exhibited the advantages of convenience, rapidness, low cost, and high precision. The construction of Bleomycin biosensors is important for achieving optimal therapeutic effects with minimal toxicity.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biochemical Research Methods
Wenting Cheng, Liangliang Xiang, Khan Adeel, Jianchun Zhang, Ying Sun, Zhaoli Zhang, Jinlong Li
Summary: This study presents a tetrahedral DNA nanostructure combined with fluorescence signal amplification of DNA-templated silver nanoclusters for accurate detection of telomerase activity. By introducing single-strand extension of telomerase, the fluorescence of silver nanoclusters can be quickly activated, achieving a low detection limit of 1 cell.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Shan-Shan Zhang, Shana Havenridge, Chengkai Zhang, Zhi Wang, Lei Feng, Zhi-Yong Gao, Christine M. Aikens, Chen-Ho Tung, Di Sun
Summary: In this study, two super-tetrahedral silver nanoclusters with high photoluminescence quantum yield (PLQY) were constructed. The mechanism of achieving high PLQY was deciphered, and a core engineering strategy for controlled synthesis of silver nanoclusters with high PLQY was provided.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Yuliang Cheng, Guowen Li, Xiufang Huang, Zhijuan Qian, Chifang Peng
Summary: A label-free fluorescent detection method for glyphosate based on DNA-Ag NCs and a Cu2+-ion-modulated strategy was developed, achieving ultrasensitive detection of glyphosate. The method showed a linear response in the range of 1.0-50 ng/mL with a LOD of 0.2 ng/mL, demonstrating high application potential for glyphosate detection.
Article
Chemistry, Analytical
Yan Zeng, Peng Qi, Yanan Zhou, Yingwen Wang, Yue Xin, Yan Sun, Dun Zhang
Summary: A method for determining multi pathogenic microorganisms using a DNA composites encapsulated DNA silver nanocluster (AgNCs)/graphene oxide (GO) system is reported in this study. The method utilizes rolling cycle (RCA) amplification and successfully detects Escherichia coli and Staphylococcus aureus at concentrations as low as 38 CFU/mL, achieving a highly selective and efficient sensing platform. This RCA/DNA-AgNCs/GO-based platform shows great potential in multi pathogenic microorganisms determination and potential clinic therapy.
Article
Chemistry, Analytical
Gui-min Ma, Li-wei Huo, Yin-xia Tong, Yu-cong Wang, Cui-ping Li, Hong-xia Jia
Summary: A novel strategy for miRNA detection has been developed using DSNSA and AgNCs, where the combination of target miRNA, DSNSA, and AgNCs is achieved by unique DNA sequences. The method shows a low detection limit, a wide dynamic range, excellent selectivity, and good performance for miR-21 detection in complex biological samples.
Article
Chemistry, Multidisciplinary
Lingyuan Liu, Shuyun Zhu, Jing Sun, Meng Xia, Xian'en Zhao, Guobao Xu
Summary: A ratiometric fluorescent sensing platform for bleomycin (BLM) has been designed using DNA-templated silver nanoclusters (DNA-AgNCs) probe, with a highly-sensitive detection limit of 30 pmol/L. The label-free fluorescence probe offers the advantages of convenient synthetic process and low cost, and has been successfully applied to the detection of BLM in human serum samples, showing potential for cancer therapy analysis.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Akhilesh Kumar Gupta, Alexey V. Krasnoslobodtsev
Summary: In this study, a fluorescent/electrochemical dual-mode self-powered biosensor was developed using DNA-templated silver nanoclusters (AgNCs@DNA) for advanced biosensing. AgNCs@DNA showed advantages as an optical probe and was successfully applied for glucose detection. The biosensor exhibited low-level limits of detection, simultaneous utilization of different readout strategies, and a self-powered design.
Article
Spectroscopy
Bo Zheng, Binhui Pan, Sheng Xu, Zhihua Xu, Guangrong Lu, FangYan Wang, Biyun Fang, ChangLong Xu
Summary: Research has shown that circulating miRNAs can be used as novel diagnostic and prognostic markers for patients with inflammatory bowel diseases (IBD). In this study, a fluorescent probe was developed for simultaneous detection of two serum biomarkers (miR-23a and miR-223) associated with ulcerative colitis (UC) activity. The method showed high selectivity and has the potential for clinical application.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Nanoscience & Nanotechnology
Fuheng Zhai, Yufei Guan, Yuanyuan Li, Shuai Chen, Ronghuan He
Summary: In this study, a deep learning protocol based on recurrent neural network (RNN) algorithms was developed to predict the fluorescence properties of DNA-templated silver nanoclusters (AgNCs). The model showed high accuracy in identifying the number of fluorescence emission peaks and the fluorescence color of AgNCs. Experimental verification demonstrated the potential use of the model for experimental guidance.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Analytical
Yuehan Zhang, Shuai Hao, Xiaoxuan Sun, He Zhang, Qian Ma, Junfeng Zhai, Shaojun Dong
Summary: This work presents a self-powered glucose biosensor (SPGB) consisting of a copper anode and a glucose oxidase/Prussian blue/ITO biocathode. The SPGB is capable of flow sensing glucose with a wide linear detection range, high sensitivity, low detection limit, and satisfactory performance in determining glucose in juices.
Article
Chemistry, Multidisciplinary
Jinbo Zhu, Filip Boskovic, Ulrich F. Keyser
Summary: This study combines DNA structures assembled based on split G-quadruplex (GQ) with a solid-state nanopore sensing platform for the rapid detection of multiple nucleic acid targets.
Article
Chemistry, Multidisciplinary
Marcus Fletcher, Jinbo Zhu, Roger Rubio-Sanchez, Sarah E. Sandler, Kareem Al Nahas, Lorenzo Di Michele, Ulrich F. Keyser, Ran Tivony
Summary: Accurate measurement of ion permeability through cellular membranes has been a challenge due to the lack of suitable ion-selective probes. Researchers have used giant unilamellar vesicles (GUVs) as membrane models and a DNA-based sensor to visualize and measure ion transport. The study found that the permeability coefficients of potassium ions were at least one order of magnitude larger than previously reported values, and the presence of octanol increased the permeation rates across lipid bilayers.
Article
Biochemistry & Molecular Biology
Rongbing Li, Xiaoxuan Sun, Yujia Jiang, Ling Liu, Yunhui Li, Dengbin Yu, Jianwei Zhu, Shaojun Dong
Summary: In this study, a colorimetric biosensor based on the rapid color change of E. coli and BQ was introduced for water toxicity evaluation. The biosensor showed a dose-dependent response, with IC20 values for Cu2+ and Hg2+ obtained based on RGB values. It has the potential to quickly detect the toxicity of Cu2+ and Hg2+ in water.
BIOELECTROCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yesheng Wang, Zhentong Zhu, Chunmiao Yu, Ruiping Wu, Jinbo Zhu, Bingling Li
Summary: This article proposes a solution for improving the performance of solid-state nanopore in sensitive and label-free single molecular analysis by designing a model nucleic acid circuit reaction to produce controllable Y-shaped three-way DNA oligomers. Experimental results show that the oligomers can significantly enhance signal resolution and stability, and can be used as tags for specific identification and multiple assays.
Article
Engineering, Biomedical
Ye Zhu, Lining Zhang, Wanglin Duan, Sergio Martin-Saldana, Chaowei Li, Hongwen Yu, Luyao Feng, Xianpeng Zhang, Baoji Du, Guanying Li, Xifu Zheng, Yazhong Bu
Summary: Based on cryopolymerization, a succinic ester-based sponge (Ssponge) is fabricated and shows better hemostasis performance and tissue regeneration in liver hemorrhage and liver regeneration models compared to commercially available gelatin sponge (Csponge).
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Chemistry, Physical
Jianguo Zhao, He Zhang, Xiaoxuan Sun, Shuai Hao, Panpan Zhao, Xinyang Zhu, Shaojun Dong
Summary: This paper reports an integrated bio-photoelectrochemical system based on photo-enzyme coupled catalysis for glucose oxidation and hydrogen peroxide production. The proposed system shows excellent performance in terms of maximum power output and efficient H2O2 accumulation, expanding the functional versatility of green energy devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Analytical
Zhixuan Yu, Jiaxin Zhang, Jinxing Chen, Liyi Zhao, Dengbin Yu, Ling Liu, Shaojun Dong
Summary: fi-D-Glucuronidase (GUS) plays a crucial role in clinical treatment assessment and environmental monitoring. However, current GUS detection tools have limitations in terms of pH continuity and diffusion. In this study, a novel GUS recognition tool called ERNathG was developed, which addressed these issues by utilizing pH-matching and endoplasmic reticulum-anchoring strategies. ERNathG enabled continuous and anchored GUS detection without pH adjustment, demonstrating superior properties compared to commonly used commercial molecules.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Long Pang, Zhiwei Zhao, Xian-Yin Ma, Wen-Bin Cai, Limin Guo, Shaojun Dong, Chuntai Liu, Zhangquan Peng
Summary: Researchers have developed a novel analytical method that combines differential electrochemical mass spectrometry and attenuated total reflection surface enhanced infrared absorption spectroscopy to simultaneously detect deposited and volatile interface species. This technique is particularly suitable for non-aqueous, electrolyte-based energy devices. By applying this method in lithium-ion and lithium-oxygen batteries, they obtained valuable reaction mechanisms. Overall, this coupled and complementary technique provides important insights into the interfacial electrochemistry of energy storage materials and is expected to generate significant interest in the electrochemistry community and beyond.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Jinbo Zhu, Ran Tivony, Filip Boskovic, Joana Pereira-Dias, Sarah E. Sandler, Stephen Baker, Ulrich F. Keyser
Summary: In this study, a nanopore sensor based on DNA dumbbell nanoswitches was established for multiplexed nucleic acid detection and bacterial identification. By assembling four DNA dumbbell nanoswitches on one carrier, simultaneous detection of four different sequences of nucleic acids was achieved. The high specificity of the dumbbell nanoswitch was verified by distinguishing single base variants in DNA and RNA targets using barcoded DNA carriers in multiplexed measurements. By combining multiple dumbbell nanoswitches with barcoded DNA carriers, different bacterial species could be identified even with high sequence similarity by detecting strain specific 16S ribosomal RNA (rRNA) fragments.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Haiwei Hou, Lan Liu, Qiuyue Li, Jianming Wang, Baoji Du
Summary: A cascade enzyme system of peroxidase and catalase is proposed in this study to expand the linear range of hydrogen peroxide (H2O2) detection. The system, consisting of ruthenium nanoparticles, catalase, and graphene, demonstrates an expanded linear range and higher maximum linear range for H2O2 detection.
Article
Chemistry, Physical
Panpan Zhao, Xiaoxuan Sun, Shuai Hao, Yuehan Zhang, Jinxing Chen, He Zhang, Shaojun Dong
Summary: In this work, rhodium single-atom nanozymes (Rh SANs) were designed to mimic the function of natural glucose oxidase (GOD) for glucose oxidation. The Rh SANs demonstrated the same biocatalytic mechanism and electrocatalytic path as natural GOD. By coupling a bilirubin oxidase biocathode, a Rh SANs-based glucose/O2 enzymatic biofuel cell (EBFC) was developed with a significantly enhanced power density compared to a natural GOD-based EBFC. This device not only accelerates the development of nanozymes but also paves avenues for powering portable and wearable devices.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Yunxuan Li, Sarah E. Sandler, Ulrich F. Keyser, Jinbo Zhu
Summary: Nanopores are powerful single-molecule sensors for identifying and characterizing small polymers like DNA. In this study, a programmable DNA carrier platform was introduced to capture specific DNA nanostructures, and controlled translocation experiments through glass nanopores were conducted to understand the relationship between nanopore signals and DNA physical properties. The results show that the volume and flexibility of DNA nanostructures in the nanopore primarily determine the ionic current drop. Additionally, this understanding of DNA topology allowed discrimination between circular single-stranded DNA molecules and linear ones with the same number of nucleotides using the nanopore signal.
Article
Nanoscience & Nanotechnology
Yongqin Liu, Liang Huang, Youxing Fang, Xinyang Zhu, Jianli Nan, Shaojun Dong
Summary: In this study, a novel catalyst was designed through interfacial engineering, leading to enhanced yield rate and Faradaic efficiency of ammonia production. This provides new insights into electrocatalytic nitrogen reduction.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Weiwei Wu, Liang Huang, Xinyang Zhu, Jinxing Chen, Daiyong Chao, Minghua Li, Shuangli Wu, Shaojun Dong
Summary: This article investigates the inhibitory effect of nanozymes and the advantages of single-atom Fe-N-C nanozymes in mechanism research. The study finds that a common analgesic-antipyretic drug inhibits the oxidase-like activity of Fe-SANs in a reversible mixed-inhibition manner. Additionally, a calorimetric method for drug detection based on nanozyme inhibition is proposed.