Biosensors and Bioelectronics: X最新文献

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Current progress in aptamer-based sensors for the detection of protein biomarkers in neurodegenerative diseases 基于适配体的传感器在检测神经退行性疾病蛋白质生物标记物方面的最新进展
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-08-08 DOI: 10.1016/j.biosx.2024.100528
Tao Cheng , Noshin Afshan , Jianwei Jiao , Jin Jiao
{"title":"Current progress in aptamer-based sensors for the detection of protein biomarkers in neurodegenerative diseases","authors":"Tao Cheng ,&nbsp;Noshin Afshan ,&nbsp;Jianwei Jiao ,&nbsp;Jin Jiao","doi":"10.1016/j.biosx.2024.100528","DOIUrl":"10.1016/j.biosx.2024.100528","url":null,"abstract":"<div><p>Neurodegenerative diseases (NDs) have been a group of disorders characterized by neuronal death and functional loss including Alzheimer's disease (AD), Parkinson's disease (PD) and Huntington's disease (HD), etc. Since diagnostic methods for the NDs biomarkers have been based on traditional enzyme linked immunosorbent assay (ELISA) or Western Blotting, the antibody intrinsic drawbacks such as large molecular weight and high cost make early diagnosis of NDs quite challenging. The aptamers bridge this gap effectively and their versatile features such as small molecular weight, easy modification, high stability and low cost have been widely used to fabricate biosensors to diagnose NDs. Various aptamer-based biosensors have shown excellent performance in the early diagnosis of NDs. Several biomarkers including nucleic acid, protein, biomolecule, and exosome has been used as early diagnostic indicators for NDs. In this minireview, we aim to report the latest progress in aptasensors (including colorimetric, fluorescence, electrochemical and electrochemiluminescence, etc) for detecting NDs protein biomarkers, summarize principles of their functions along with challenges in the way to diagnose NDs and emphasize their future perspectives.</p></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"20 ","pages":"Article 100528"},"PeriodicalIF":10.61,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S259013702400092X/pdfft?md5=c2ba70c354f3e5d24039205365f5bb40&pid=1-s2.0-S259013702400092X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intelligent and ligand-based surface-enhanced Raman spectroscopy biosensors for the instant screening of viral respiratory infections 用于即时筛查病毒性呼吸道感染的基于配体的智能表面增强拉曼光谱生物传感器
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-08-02 DOI: 10.1016/j.biosx.2024.100527
Bo Cao , Peng Lin , Yanling Wang , Weiwei Yang , Longxiang Ren , Zhongqiao Ge , Hongjing Sui , Yuan Gao , Mengyuan Liu , Guangcheng Bei , Susan Zhou , Qin Zhou , Feiyun Cui
{"title":"Intelligent and ligand-based surface-enhanced Raman spectroscopy biosensors for the instant screening of viral respiratory infections","authors":"Bo Cao ,&nbsp;Peng Lin ,&nbsp;Yanling Wang ,&nbsp;Weiwei Yang ,&nbsp;Longxiang Ren ,&nbsp;Zhongqiao Ge ,&nbsp;Hongjing Sui ,&nbsp;Yuan Gao ,&nbsp;Mengyuan Liu ,&nbsp;Guangcheng Bei ,&nbsp;Susan Zhou ,&nbsp;Qin Zhou ,&nbsp;Feiyun Cui","doi":"10.1016/j.biosx.2024.100527","DOIUrl":"10.1016/j.biosx.2024.100527","url":null,"abstract":"<div><p>The global spread of viral respiratory infections continues to pose a substantial threat to human health, exacerbating the societal burden. Timely and precise detection of viruses is pivotal in mitigating pandemic transmission. Currently, the prevalent diagnostic techniques for viruses include real-time quantitative polymerase chain reaction (RT-qPCR), enzyme-linked immunosorbent assay (ELISA), and colloidal gold assays. However, intricate workflows and protracted processing times of RT-qPCR and ELISA preclude real-time diagnostics, despite their high accuracy. Colloidal gold assays offer rapid turnaround. However, their accuracy and sensitivity are limited, particularly in the context of emerging variants like SARS-CoV-2, which renders them suboptimal test tools. Mounting evidence suggests that surface-enhanced Raman spectroscopy (SERS), with its streamlined operation, rapid analysis, high specificity and sensitivity, holds significant potential as a superior alternative test tool. This review consolidates various SERS-based approaches for detecting respiratory infection virus (RIV) and delineates their characteristics. The unique strengths of SERS technology, including its exceptional sensitivity, robust specificity, and expedited turnaround times, earmark it as particularly well-suited for large-scale instant screening of viral infections within populations.</p></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"20 ","pages":"Article 100527"},"PeriodicalIF":10.61,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590137024000918/pdfft?md5=754984b7ae792e8dbdc7d4ffcae6a4be&pid=1-s2.0-S2590137024000918-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis, characterization, and electrochemical uric acid sensing properties of Cu3N nanoparticles Cu3N 纳米粒子的合成、表征和电化学尿酸传感特性
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-07-31 DOI: 10.1016/j.biosx.2024.100526
Munusamy Settu , Gnanamoorthy Govindhan , Bavani Thirugnanam , Kumar Kalpana , Majed A. Alotaibi
{"title":"Synthesis, characterization, and electrochemical uric acid sensing properties of Cu3N nanoparticles","authors":"Munusamy Settu ,&nbsp;Gnanamoorthy Govindhan ,&nbsp;Bavani Thirugnanam ,&nbsp;Kumar Kalpana ,&nbsp;Majed A. Alotaibi","doi":"10.1016/j.biosx.2024.100526","DOIUrl":"10.1016/j.biosx.2024.100526","url":null,"abstract":"<div><p>This article explores the development and applications of a Cu<sub>3</sub>N/GCE-based sensor using differential pulse voltammetry (DPV) for selective uric acid (UA) detection in clinical analysis. The sensor achieves a limit of detection (LOD) of 2.57 × 10<sup>−8</sup> M and a quantification limit (QL) of 8.102 × 10<sup>−8</sup> M, demonstrating its capability to precisely quantify minute UA concentrations. With rapid responsiveness and reusability over 25 days, it offers cost-effective monitoring of UA levels, even in complex sample matrices. Cu<sub>3</sub>N also exhibits high efficiency in degrading methylene blue (MB), achieving 87.7% degradation under optimized conditions, suggesting its potential as a photocatalyst for environmental remediation, particularly in dye degradation processes. Overall, Cu<sub>3</sub>N-based technologies show promise in sensitive UA detection for clinical diagnostics, environmental remediation, and industrial catalysis, highlighting its versatility and broad applicability across scientific and practical domains.</p></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"20 ","pages":"Article 100526"},"PeriodicalIF":10.61,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590137024000906/pdfft?md5=df93035d48df71e35abde2c63171055c&pid=1-s2.0-S2590137024000906-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Graphene based electrochemical biosensors for the detection of cardiac biomarkers 基于石墨烯的电化学生物传感器用于检测心脏生物标记物
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-07-25 DOI: 10.1016/j.biosx.2024.100515
Md Asraful Alam
{"title":"Graphene based electrochemical biosensors for the detection of cardiac biomarkers","authors":"Md Asraful Alam","doi":"10.1016/j.biosx.2024.100515","DOIUrl":"10.1016/j.biosx.2024.100515","url":null,"abstract":"<div><p>Cardiovascular disease (CVD) is the leading cause of mortality around the world. Diagnosis of CVD using biosensing strategy poised to improve the precision and efficiency of CVD treatment in standard clinical practice. Electrochemical biosensors show great promise for early and accurate diagnosis of cardiovascular diseases, paving the way for personalized medicine and improved patient outcomes. Nanomaterials are emerging as a must need tool in biosensor fabrication. Graphene-based nanomaterials exhibit exceptional electrical conductivity, large surface area, and enhanced biofunctionalization ability for the receptor molecules, serving as an ideal platform for sensitive and selective biosensing applications, which in turn offers high sensitivity, rapid response times, and portability, making them ideal for point-of-care testing. The use of aptamers or molecularly imprinted polymers over antibodies as receptor can provide tool to develop innovative, highly stable biosensors over classical biosensors. In this review, electrochemical state-of-art technology for biosensor development incorporating graphene-related nanomaterials are discussed. Recently developed graphene-based electrochemical nanobiosensors for cardiac biomarker detection are reviewed. Current trends in biosensing strategy and future perspectives are outlined, with a focus on the potential use of graphene-related nanomaterials in electrochemical biosensing platforms.</p></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"20 ","pages":"Article 100515"},"PeriodicalIF":10.61,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590137024000797/pdfft?md5=3174ab30a695245823d7ac44f50acf1d&pid=1-s2.0-S2590137024000797-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141846632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic beads-based nanozyme for portable colorimetric biosensing of Helicobacter pylori 基于磁珠的纳米酶用于幽门螺旋杆菌的便携式比色生物传感
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-07-20 DOI: 10.1016/j.biosx.2024.100517
Ghadeer A.R.Y. Suaifan , Mayadah B. Shehadeh , Rula M. Darwish , Manar Alterify , Ward Abu Jbara , Fahid Abu Jbara , Nader Alaridah , Mohammed Zourob
{"title":"Magnetic beads-based nanozyme for portable colorimetric biosensing of Helicobacter pylori","authors":"Ghadeer A.R.Y. Suaifan ,&nbsp;Mayadah B. Shehadeh ,&nbsp;Rula M. Darwish ,&nbsp;Manar Alterify ,&nbsp;Ward Abu Jbara ,&nbsp;Fahid Abu Jbara ,&nbsp;Nader Alaridah ,&nbsp;Mohammed Zourob","doi":"10.1016/j.biosx.2024.100517","DOIUrl":"10.1016/j.biosx.2024.100517","url":null,"abstract":"<div><p>Cancer continues to be a significant global health issue with one in six deaths linked to the disease despite advancements in cancer detection and treatment. Recently, <em>Helicobacter pylori</em> (<em>H. pylori</em>) was identified as a risk factor for cancer development. This gram-negative bacterium is associated with gastric conditions, including stomach cancer. Although the exact transmission methods of this bacterium are still unclear, studies suggest that waterborne transmission is possible. This study focuses on the development of a colorimetric nanomaterial-based paper biosensor for specific <em>H. pylori</em> detection using <em>H. pylori</em> extracellular proteases as biomarkers. The biosensor utilizes a unique substrate labeled with magnetic nanobeads and bound to a gold sensing platform. The biosensor's limit of detection (LOD) of 100 CFU/mL, selectivity, stability, and ability to detect <em>H. pylori</em> in clinical specimens were evaluated, demonstrating promising results in terms of sensitivity and specificity. In comparison to traditional methods, this biosensor offers advantages in simplicity and ease of use, making it appropriate for on-site detection in both environmental and clinical settings.</p></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"20 ","pages":"Article 100517"},"PeriodicalIF":10.61,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590137024000815/pdfft?md5=2e76196d184154565915a1ec306f80c1&pid=1-s2.0-S2590137024000815-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141840777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel and ultrasensitive high-surface porous carbon-based electrochemical biosensor for early detection of dengue virus 用于早期检测登革热病毒的新型超灵敏高表面多孔碳电化学生物传感器
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-07-20 DOI: 10.1016/j.biosx.2024.100525
Shreeganesh Subraya Hegde , Shivakumar , Badekai Ramachandra Bhat , Praveen Mishra , Udayakumar Dalimba , Minhaz Uddin Ahmed , Gil Nonato Santos
{"title":"A novel and ultrasensitive high-surface porous carbon-based electrochemical biosensor for early detection of dengue virus","authors":"Shreeganesh Subraya Hegde ,&nbsp;Shivakumar ,&nbsp;Badekai Ramachandra Bhat ,&nbsp;Praveen Mishra ,&nbsp;Udayakumar Dalimba ,&nbsp;Minhaz Uddin Ahmed ,&nbsp;Gil Nonato Santos","doi":"10.1016/j.biosx.2024.100525","DOIUrl":"10.1016/j.biosx.2024.100525","url":null,"abstract":"<div><p>Dengue fever, a mosquito-borne viral infection, poses a significant global health threat, and early diagnosis is crucial for effective disease management. The utilization of advanced materials in the design ensures an improved surface area, facilitating a heightened interaction between the sensor and the target. In this study, the incorporation of biomass-derived high-surface porous carbon-based materials not only contributed to the sensor's sensitivity but also ensured a cost-effective and scalable manufacturing process. The electrochemical nature of the biosensor added a layer of precision to the detection process and offered a reliable, rapid method for identifying the infection of the dengue virus. The enhanced sensitivity of the biosensor allowed the detection of even trace amounts of the NS1 protein, enabling early diagnosis in the initial stages of dengue infection. The system exhibited a high sensitivity with a wide linear range between 1 pg/mL and 100 μg/mL, and the extremely low detection limit of 0.665 pg/mL ranks this as one of the most efficient biosensors for the detection of dengue virus NS1 protein. Selectivity studies, coupled with computational insights, showcased the biosensor's prowess in distinguishing NS1 protein from potential interfering substances, laying the foundation for reliable diagnostics in complex biological matrices. Real sample analysis using human serum spiked with NS1 protein offers a tantalizing glimpse into the transformative potential of biosensors in real-world scenarios. This innovative biosensor holds great promise for addressing the pressing need for early detection of dengue virus infections.</p></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"20 ","pages":"Article 100525"},"PeriodicalIF":10.61,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S259013702400089X/pdfft?md5=c4b4552e9a7c162c83850a58b49c49dd&pid=1-s2.0-S259013702400089X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141852247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A cell targeting and sorting approach based on the magnetophoretic capturing for early prognostics of metastatic cervical cancer cells 基于磁泳捕捉的细胞靶向和分选方法,用于转移性宫颈癌细胞的早期预后分析
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-07-17 DOI: 10.1016/j.biosx.2024.100516
Mirza Muhammad Faran Ashraf Baig , Jinwei Ma , Hongkai Wu , Wai Tong Chien , Sek Ying Chair
{"title":"A cell targeting and sorting approach based on the magnetophoretic capturing for early prognostics of metastatic cervical cancer cells","authors":"Mirza Muhammad Faran Ashraf Baig ,&nbsp;Jinwei Ma ,&nbsp;Hongkai Wu ,&nbsp;Wai Tong Chien ,&nbsp;Sek Ying Chair","doi":"10.1016/j.biosx.2024.100516","DOIUrl":"10.1016/j.biosx.2024.100516","url":null,"abstract":"<div><p>HeLa cervical cancer cells are immortal with telomerase activity and metastatic characteristics similar to circulating tumor cells (CTCs). Here, we report aptamer-modified multilayered magnetic beads (Apt@MBs) that efficiently targeted and captured HeLa cells up to a low concentration of freshly prepared cell suspension (500 cells/mL). Apt@MBs were functionalized with fluorophore-conjugated AS1411-aptamer on an outer layer made up of molybdenum disulfide (MoS<sub>2</sub>) to target nucleolin on the cell surface of captured HeLa cells. Moreover, this outer MoS<sub>2</sub> layer of MBs was nanoporous and could load anticancer drugs inside its porous cavities with the possibility of killing the captured and metastatic CTCs <em>in vivo</em>. An internal core layer of Apt@MBs consisting of Ag–Fe<sub>3</sub>O<sub>4</sub> magnetic particles (MPs) was designed for magnetic manifestations and cell sorting with the possibility of screening CTCs (in the patient's blood samples) for early diagnosis of metastatic cancers. The Apt@MBs after cell capture gave rise to the heavier HeLa-MBs composites to get settled down under gravitational/inertial forces to the bottom of the tube quicker than the free cells (within 10 min). The gravitational settling of HeLa-MBs was further coupled with exposing a magnetic field to effectively capture and enrich the cells at the bottom of the tube (from 91 to 98 % cells). While the fluid containing dead, non-cancerous, or uncaptured cells in the supernatant layers were easily removed by pipetting. The HeLa-MBs after sorting out were resuspended into a fresh culture medium for further incubation or cellular analysis. Moreover, both cisplatin (CP) and epirubicin (EP) loaded Apt@MBs showed the killing of about 50 % of the captured cells. Therefore, we are confident that Apt@MBs can contribute to enumerating patients' blood samples for screening CTCs to timely and efficiently detect metastatic cancers along with the ability to effectively perform prognosis, and treatment of metastatic cancers.</p></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"20 ","pages":"Article 100516"},"PeriodicalIF":10.61,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590137024000803/pdfft?md5=bbe2c8cdad9186ff5178f216df440ef8&pid=1-s2.0-S2590137024000803-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141736755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alzheimer's diagnosis beyond cerebrospinal fluid: Probe-Free Detection of Tau Proteins using MXene based redox systems and molecularly imprinted polymers 脑脊液之外的阿尔茨海默氏症诊断:使用基于 MXene 的氧化还原系统和分子印迹聚合物对 Tau 蛋白进行无探针检测
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-07-06 DOI: 10.1016/j.biosx.2024.100513
Ajith Mohan Arjun , Sudhaunsh Deshpande , Tom Dunlop , Beth Norman , Daniela Oliviera , Georgeta Vulpe , Felismina Moreira , Sanjiv Sharma
{"title":"Alzheimer's diagnosis beyond cerebrospinal fluid: Probe-Free Detection of Tau Proteins using MXene based redox systems and molecularly imprinted polymers","authors":"Ajith Mohan Arjun ,&nbsp;Sudhaunsh Deshpande ,&nbsp;Tom Dunlop ,&nbsp;Beth Norman ,&nbsp;Daniela Oliviera ,&nbsp;Georgeta Vulpe ,&nbsp;Felismina Moreira ,&nbsp;Sanjiv Sharma","doi":"10.1016/j.biosx.2024.100513","DOIUrl":"10.1016/j.biosx.2024.100513","url":null,"abstract":"<div><p>Phosphorylated Tau proteins are promising biomarkers for the diagnosis and prognosis of Alzheimer's disease. This study presents a novel voltametric sensor using a vanadium MXene polydopamine (V<sub>x</sub>PDA) redox active composite and a Tau-441-specific polyaniline molecularly imprinted polymer (PANI MIP) for the sensitive detection of Tau-441 in interstitial fluid (ISF) and plasma. The V<sub>x</sub>PDA/PANI MIP sensor demonstrates a broad detection range of 5 fg/mL to 5 ng/mL (122 aM/L to 122 pM/L) in ISF without the use of redox mediators, with a lower limit of detection (LOD) of 2.3 fg/mL (60 aM/L). Furthermore, a handheld device utilizing this technology successfully detects Tau-441 in artificial serum with high sensitivity (5 fg/mL to 150 fg/mL (122 aM/L to 366 aM/L)) and specificity within a clinically relevant range. The rapid detection time (∼32 min) and low cost (∼£20/device) of this sensor highlight its potential for minimally invasive, early AD diagnosis in clinical settings. This advancement aims to facilitate a transition away from invasive cerebrospinal fluid (CSF)-based diagnostic techniques for AD.</p></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"20 ","pages":"Article 100513"},"PeriodicalIF":10.61,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590137024000773/pdfft?md5=2f8024043d8800e923c8446001146708&pid=1-s2.0-S2590137024000773-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141714796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
AuNPs/CaHF NPs/N-GDY as bifunctional nanozyme breaking pH limitation for miRNA-21 sensitive detection at physiological pH 作为双功能纳米酶的 AuNPs/CaHF NPs/N-GDY 打破 pH 限制,在生理 pH 值下灵敏检测 miRNA-21
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-07-05 DOI: 10.1016/j.biosx.2024.100514
Yujing Wang , Xiaoxing Xu , Lan Gu , Rongqi Zhang , Ying Peng , Xiaoyong Jin , Beibei Kou
{"title":"AuNPs/CaHF NPs/N-GDY as bifunctional nanozyme breaking pH limitation for miRNA-21 sensitive detection at physiological pH","authors":"Yujing Wang ,&nbsp;Xiaoxing Xu ,&nbsp;Lan Gu ,&nbsp;Rongqi Zhang ,&nbsp;Ying Peng ,&nbsp;Xiaoyong Jin ,&nbsp;Beibei Kou","doi":"10.1016/j.biosx.2024.100514","DOIUrl":"https://doi.org/10.1016/j.biosx.2024.100514","url":null,"abstract":"<div><p>Nanozyme cascade have garnered substantial interest in recent years due to their distinctive properties. However, the conventional stepwise cascade reaction undergoes tedious two-step operation process owing to the incompatibility of reaction conditions. Moreover, most of reported nanozymes exhibit favorable catalytic performance only in acidic medium, which greatly restricts their usage especially in biochemical analysis. To address above challenges, we developed gold nanoparticles/calcium hexacyanoferrate (Ⅲ)/nitrogen-doped graphitic alkyne (AuNPs/CaHF NPs/N-GDY) nanozyme with superior cascade catalytic activity at neutral pH comparable to that of acidic. Specifically, AuNPs/CaHF NPs/N-GDY simultaneously possessed glucose oxidase-like (GOx) and peroxidase-like (HRP) activities, which could induce one-step cascade reaction in the presence of glucose, resulting in 5-fold enhancement in catalytic efficiency compared with conventional two-step cascade reaction. Besides, tripedal DNA walker was equipped with sufficient walking legs to walk on directional and highly controllable stepped track, reducing the possibility of derailment and boosting walking efficiency. As a proof of concept, a novel electrochemical biosensor was constructed for miRNA-21 sensitive detection <span>at physiological pH</span><svg><path></path></svg>, and successfully applied in human serum samples as well as practical intracellular analysis, offering great potential in biomedical research and clinical diagnosis.</p></div>","PeriodicalId":260,"journal":{"name":"Biosensors and Bioelectronics: X","volume":"19 ","pages":"Article 100514"},"PeriodicalIF":10.61,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590137024000785/pdfft?md5=c78a3b6724c1f7fd4dc33bbd19b1635c&pid=1-s2.0-S2590137024000785-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141582126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanozyme-based sensors for cancer diagnosis 基于纳米酶的癌症诊断传感器
IF 10.61
Biosensors and Bioelectronics: X Pub Date : 2024-07-02 DOI: 10.1016/j.biosx.2024.100512
Olga Guliy, Lev Dykman
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