1
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Xiao Y, Huang P, Wu FY. Bifunctional Tb(III)-modified Ce-MOF nanoprobe for colorimetric and fluorescence sensing of α-glucosidase activity. Talanta 2024; 276:126304. [PMID: 38796993 DOI: 10.1016/j.talanta.2024.126304] [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: 03/09/2024] [Revised: 05/08/2024] [Accepted: 05/20/2024] [Indexed: 05/29/2024]
Abstract
α-Glucosidase, which directly involves in the metabolism of starch and glycogen and causes an increase in blood sugar level, is the major target enzyme for the precaution and therapy of type II diabetes. Based on the previous work, we adopted a post-synthetic modification method to encapsulate Tb3+ into Ce-MOF nanozyme which owned mixed valence states. Tb@Ce-MOF displayed induced luminescence characteristic and exceptional oxidase-like activity that could oxidize colorless 3,3',5,5'-tetramethylbenzidine (TMB) to blue ox-TMB. α-Glucosidase can hydrolyze the substrate l-ascorbic acid-2-O-α-d-glucopyranosyl (AAG) to generate ascorbic acid (AA), which could increase the Ce3+/Ce4+ redox valence mode in Tb@Ce-MOF, leading to the inhibition of the allochroic reaction of TMB and the decreased absorption of ox-TMB at 652 nm. The energy transfer (EnT) process from Ce3+ to Tb3+ will enhance due to the increased Ce3+/Ce4+ mode in Tb@Ce-MOF, which will result in an enhanced fluorescence signal of Tb@Ce-MOF at 550 nm. But the addition of inhibitor acarbose will inhibit the above process. We have constructed a dual-mode detection platform of α-glucosidase and its inhibitor via colorimetric and fluorometric method. The linear range of α-glucosidase were 0.01-0.5 U/mL (colorimetric mode) and 0.8-1.5 U/mL (fluorometric mode), respectively, with a detection limit as low as 0.0018 U/mL. Furthermore, our approach was also successfully employed to the analysis of α-glucosidase in serum samples.
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Affiliation(s)
- Yi Xiao
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China
| | - Pengcheng Huang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China.
| | - Fang-Ying Wu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China.
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2
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Zehra N, Malik AH, Parui R, Hussain S, Krishnan Iyer P. A Conjugated Polymer-Based Portable Smartphone Platform for Sensitive and Point-Of-Care Detection of Monoamine Neurotransmitter. Chem Asian J 2024:e202400544. [PMID: 38865578 DOI: 10.1002/asia.202400544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 06/14/2024]
Abstract
The precise and effective detection of neurotransmitters (NTs) is crucial for clinical investigation of neuronal processes, and timely monitoring of NT-related chronic diseases. However, sensitive detection of specific NT with unprecedented selectivity is highly challenging due to similarities in chemical and electronic structures of various interfering neurochemicals. Herein, an anionic conjugated polyelectrolyte Poly[(9,9-bis(4'-sulfonatobutyl)fluorene-co-alt-1,4-phenylene) sodium], PFPS was rationally designed and synthesized for amplified detection and point-of-care (PoC) determination of monoamine neurotransmitter, serotonin (5-Hydroxy tryptamine or 5-HT, also diagnostic biomarker of carcinoid tumor) in human blood plasma. The PFPS displayed a remarkable sensing response with an exceptionally high fluorescence quenching constant of 1.14×105 M-1 and an ultralow detection limit of 0.67 μM or 0.142 ppm, much below the clinical range. Furthermore, a smartphone-enabled portable platform was constructed for real-time onsite detection of 5-HT by quantification of visual fluorescence response of PFPS into RGB values using a color recognizer android application. The smartphone platform could be readily applied for convenient, non-invasive PoC testing of 5-HT levels in complex biological fluids accurately and is expected to revolutionize clinical diagnosis and personalized health care devices.
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Affiliation(s)
- Nehal Zehra
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
- Department of Chemistry, Shia P.G. College, Lucknow, 226020, U.P. India
| | - Akhtar H Malik
- Department of Chemistry, Government Degree College Sopore, Sopore, J & K, 193201, India
| | - Retwik Parui
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
| | - Sameer Hussain
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi, China
| | - Parameswar Krishnan Iyer
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, 781039, India
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, 781039., India
- School of Health Science and Technology, Indian Institute of Technology Guwahati, Guwahati, 781039., India
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3
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Zhai Z, Wang W, Chai Z, Yuan Y, Zhu Q, Ge J, Li Z. A ratiometric fluorescence platform based on WS 2 QDs/CoOOH nanosheet system for α-glucosidase activity detection. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 310:123959. [PMID: 38290280 DOI: 10.1016/j.saa.2024.123959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 01/20/2024] [Accepted: 01/22/2024] [Indexed: 02/01/2024]
Abstract
In this study, we have constructed a ratiometric fluorescence sensor for sensitive sensing of α-glucosidase activity based on WS2 QDs/ CoOOH nanosheet system. In this system, as an oxidase-imimicking nanomaterial, CoOOH nanosheet could convert o-phenylenediamine into 2,3-diaminophenazine (DAP), which had a high fluorescence emission at 575 nm. The DAP subsequently could quench the fluorescence of WS2 QDs via the inner filter effect (IFE). L-Ascorbic acid-2-O-α-D-glucopyranose could be hydrolyzed by α-glucosidase to yield ascorbic acid. CoOOH nanosheet can be converted to Co2+ ions by ascorbic acid, leading to the fluorescence decrease of DAP and the fluorescence recovery of WS2 QDs. Therefore, a novel ratio fluorescence sensing strategy was established for α-glucosidase detection based on WS2 QDs/CoOOH nanosheet system. This WS2 QDs/CoOOH nanosheet system has a low detection limit of 0.009 U/mL for α-Glu assay. The proposed strategy succeeded in detecting α-Glu in human serum samples.
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Affiliation(s)
- Zhiyao Zhai
- College of Chemistry, Institute of Analytical Chemistry for Life Science, Zhengzhou University, Zhengzhou 450001, PR China
| | - Weixia Wang
- College of Chemistry, Institute of Analytical Chemistry for Life Science, Zhengzhou University, Zhengzhou 450001, PR China
| | - Ziwei Chai
- College of Chemistry, Institute of Analytical Chemistry for Life Science, Zhengzhou University, Zhengzhou 450001, PR China
| | - Yating Yuan
- College of Chemistry, Institute of Analytical Chemistry for Life Science, Zhengzhou University, Zhengzhou 450001, PR China
| | - Qianqian Zhu
- College of Chemistry, Institute of Analytical Chemistry for Life Science, Zhengzhou University, Zhengzhou 450001, PR China
| | - Jia Ge
- College of Chemistry, Institute of Analytical Chemistry for Life Science, Zhengzhou University, Zhengzhou 450001, PR China.
| | - Zhaohui Li
- College of Chemistry, Institute of Analytical Chemistry for Life Science, Zhengzhou University, Zhengzhou 450001, PR China.
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4
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Aschemacher NA, Teglia CM, Siano ÁS, Gutierrez FA, Goicoechea HC. Development of an electrochemical sensor using carbon nanotubes and hydrophobic natural deep eutectic solvents for the detection of α-glucosidase activity in extracts of autochthonous medicinal plants. Talanta 2024; 268:125313. [PMID: 37864855 DOI: 10.1016/j.talanta.2023.125313] [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: 08/24/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 10/23/2023]
Abstract
The present work describes for the first time the use of a hydrophobic natural deep eutectic solvent (H-NADES) as a dispersant for carboxylated nanotubes for the design and construction of an electrochemical sensor for the assay of α-glucosidase and its inhibitors. In this work, we used as the electrochemical probe the product of the enzymatic reaction, which consists of two redox groups and generates the analytical signal. The combination of de carboxylic multi-walled carbon nanotubes (MWCNTc) and the H-NADES of thymol and lactic acid (TLa) increases the electroactive surface area and promotes electron transfer of the electrode modified with carbon nanotubes. The electrochemical sensor enabled the detection of α-glucosidase in a range of 0.004-0.1 U mL-1 with a detection limit of 0.0013 U mL-1, which is lower than most existing methods. In addition, two α-glucosidase inhibitors, acarbose and quercetin, and two plant extracts, Schinus molle and Eugenia uniflora, were evaluated to assess the feasibility of screening potential antidiabetic drugs, and the IC50 values were 5.37 μg mL-1 and 5.28 μg mL-1. Thus, this sensing strategy represents the beginning of the incorporation of NADES in the development and design of novel sensors and their application in electrochemistry and medical analysis.
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Affiliation(s)
- Nicolás A Aschemacher
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina; Laboratorio de Péptidos Bioactivos (LPB), Departamento de Química Orgánica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina
| | - Carla M Teglia
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CP C1425FQB, Buenos Aires, Argentina
| | - Álvaro S Siano
- Laboratorio de Péptidos Bioactivos (LPB), Departamento de Química Orgánica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CP C1425FQB, Buenos Aires, Argentina
| | - Fabiana A Gutierrez
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CP C1425FQB, Buenos Aires, Argentina.
| | - Héctor C Goicoechea
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Cátedra de Química Analítica I, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, 3000, Santa Fe, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290 CP C1425FQB, Buenos Aires, Argentina
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5
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Zhang Y, Li M, Li S, Fan A. Two-dimensional metal-organic framework catalyzed chemiluminescent reaction for alpha-glucosidase inhibitor screening. Talanta 2023; 264:124748. [PMID: 37271006 DOI: 10.1016/j.talanta.2023.124748] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 05/23/2023] [Accepted: 05/27/2023] [Indexed: 06/06/2023]
Abstract
α-Glucosidase inhibitors (AGIs) are oral antidiabetic drugs used in the treatment of type Ⅱ diabetes. It is integral to establish methods for AGIs screening. For the detection of α-glucosidase (α-Glu) activity and screening of AGIs, a chemiluminescence (CL) platform was established based on cascade enzymatic reactions. Firstly, the catalytic activity of a two-dimensional (2D) metal-organic framework (MOF) with iron as central metal atoms and 1,3,5-benzene tricarboxylic acid as a ligand (denoted as 2D Fe-BTC) in the luminol-hydrogen peroxide (H2O2) CL reaction were studied. Mechanism studies showed that the Fe-BTC may react with H2O2 to produce ·OH and act as catalase to facilitate the decomposition of H2O2 to produce O2, thus showing good catalytic activity in the luminol-H2O2 CL reaction. The proposed luminol-H2O2-Fe-BTC CL system exhibited an outstanding response to glucose with the aid of glucose oxidase (GOx). The luminol-GOx-Fe-BTC system showed a detection linear range from 50 nM to 10 μM with a detection limit (LOD) of 3.62 nM for glucose detection. Then, the luminol-H2O2-Fe-BTC CL system was applied to the detection of α-glucosidase (α-Glu) activity and screening of AGIs based on cascade enzymatic reactions using acarbose and voglibose as model drugs. The IC50 of acarbose and voglibose was 7.39 μM and 1.89 mM, respectively.
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Affiliation(s)
- Yunyu Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Meilin Li
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Shanshan Li
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Aiping Fan
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, People's Republic of China.
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6
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Alacid Y, Esquembre R, Montilla F, Martínez-Tomé MJ, Mateo CR. Fluorescent Nanocomposite Hydrogels Based on Conjugated Polymer Nanoparticles as Platforms for Alkaline Phosphatase Detection. BIOSENSORS 2023; 13:408. [PMID: 36979620 PMCID: PMC10046353 DOI: 10.3390/bios13030408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 03/15/2023] [Accepted: 03/20/2023] [Indexed: 06/18/2023]
Abstract
This work describes the development and characterization of fluorescent nanocomposite hydrogels, with high swelling and absorption capacity, and prepared using a green protocol. These fluorescent materials are obtained by incorporating, for the first time, polyfluorenes-based nanoparticles with different emission bands-poly[9,9-dioctylfluorenyl-2,7-diyl] (PFO) and poly[(9,9-di-n-octylfluorenyl-2,7-diyl)-alt-(1,4-benzo-{2,1,3}-thiadiazole)] (F8BT)-into a three-dimensional polymeric network based on polyacrylamide. To this end, two strategies were explored: incorporation of the nanoparticles during the polymerization process (in situ) and embedment after the hydrogel formation (ex situ). The results show that the combination of PFO nanoparticles introduced by the ex situ method provided materials with good storage stability, homogeneity and reproducibility properties, allowing their preservation in the form of xerogel. The fluorescent nanocomposite hydrogels have been tested as a transportable and user-friendly sensing platform. In particular, the ability of these materials to specifically detect the enzyme alkaline phosphatase (ALP) has been evaluated as a proof-of-concept. The sensor was able to quantify the presence of the enzyme in an aqueous sample with a response time of 10 min and LOD of 21 nM. Given these results, we consider that this device shows great potential for quantifying physiological ALP levels as well as enzyme activity in environmental samples.
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Affiliation(s)
- Yolanda Alacid
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández, 03202 Elche, Spain
- Departamento de Química Física and Instituto Universitario de Materiales de Alicante (IUMA), Universidad de Alicante, 03690 Alicante, Spain
| | - Rocío Esquembre
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández, 03202 Elche, Spain
| | - Francisco Montilla
- Departamento de Química Física and Instituto Universitario de Materiales de Alicante (IUMA), Universidad de Alicante, 03690 Alicante, Spain
| | - María José Martínez-Tomé
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández, 03202 Elche, Spain
| | - C. Reyes Mateo
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche (IDiBE), Universidad Miguel Hernández, 03202 Elche, Spain
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7
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Yin M, Wang Z, Xie P, Han L, Li L, Wang H, Qiao X, Deng Q. Fluorescence sensing platform for Cronobacter sakazakii based on the cationic metal-organic frameworks modified upconversion nanoparticles. Food Control 2023. [DOI: 10.1016/j.foodcont.2022.109443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Nsanzamahoro S, Wang WF, Zhang Y, Wang CB, Shi YP, Yang JL. α-Glucosidase-Triggered Reaction for Fluorometric and Colorimetric Assays Based on the Formation of Silicon-Containing Nanoparticles. Anal Chem 2021; 93:15412-15419. [PMID: 34762397 DOI: 10.1021/acs.analchem.1c03210] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Designing analytical approaches for enzymatic activity monitoring with high sensitivity and selectivity is of critical value for the diagnosis of diseases and biomedical studies. In this study, we have created a facile one-step synthetic route to prepare orange-red color and yellow fluorescent silicon-containing nanoparticles (Si CNPs) by mixing 3(2-aminoethylamino) propyl (dimethoxymethylsilane) and hydroquinone (HQ) in an aqueous solution. Inspired by the HQ-regulated facile synthetic step and the generation of HQ from α-glucosidase (α-Glu)-catalyzed hydrolysis of 4-hydroxyphenyl-α-d-glucopyranosyl (4-HPαDG), we have designed a straightforward colorimetric and fluorometric α-Glu activity assay using a commercially available 4-HPαDG as the α-Glu substrate. Fluorescent and colorimetric assays for α-Glu activity measurement have been thereby established and exhibited detection limits as low as 0.0032 and 0.0046 U/mL, respectively. Under single excitation at 370 nm, the prepared Si CNPs emitted yellow fluorescence at 520 nm and exhibited an absorbance peak at 390 nm. In addition, the proposed approach reveals various advantages including easy operation, time-saving, and good anti-interference ability. Hence, it could improve the progress of fluorometric and colorimetric enzymatic activity assays with high sensitivity and simplicity. Moreover, the proposed approach was applied for α-Glu inhibitor screening, and its feasibility in real samples was measured by detecting the α-Glu activity in human serum samples.
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Affiliation(s)
- Stanislas Nsanzamahoro
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China.,University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Wei-Feng Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China
| | - Ying Zhang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China
| | - Cheng-Bo Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China
| | - Yan-Ping Shi
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China
| | - Jun-Li Yang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources, Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, P.R. China
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Alacid Y, Martínez-Tomé MJ, Mateo CR. Reusable Fluorescent Nanobiosensor Integrated in a Multiwell Plate for Screening and Quantification of Antidiabetic Drugs. ACS APPLIED MATERIALS & INTERFACES 2021; 13:25624-25634. [PMID: 34043318 DOI: 10.1021/acsami.1c02505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A highly stable and reusable fluorescent multisample nanobiosensor for the detection of α-glucosidase inhibitors has been developed by coupling fluorescent liposomal nanoparticles based on conjugated polymers (L-CPNs) to the enzyme α-glucosidase, one of the main target enzymes in the treatment of type 2 diabetes. The mechanism of sensing is based on the fluorescence "turn-on" of L-CPNs by p-nitrophenol (PNP), the end product of the enzymatic hydrolysis of p-nitrophenyl-α-d-glucopyranoside. L-CPNs, composed of lipid vesicles coated with a blue-emitting cationic polyfluorene, were designed and characterized to obtain a good response to PNP. Two nanobiosensor configurations were developed in this study. In the first step, a single-sample nanobiosensor composed of L-CPNs and α-glucosidase entrapped in a sol-gel glass was developed in order to characterize and optimize the device. In the second part, the nanobiosensor was integrated and adapted to a multiwell microplate and the possibility of reusing it and performing multiple measurements simultaneously with samples containing different α-glucosidase inhibitors was investigated. Using super-resolution confocal microscopy, L-CPNs could be visualized within the sol-gel matrix, and the quenching of their fluorescence, induced by the substrate, was directly observed in situ. The device was also shown to be useful not only as a platform for screening of antidiabetic drugs but also for quantifying their presence. The latter application was successfully tested with the currently available drug, acarbose.
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Affiliation(s)
- Yolanda Alacid
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche, Universidad Miguel Hernández, Elche, 03202 Alicante, Spain
| | - María José Martínez-Tomé
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche, Universidad Miguel Hernández, Elche, 03202 Alicante, Spain
| | - C Reyes Mateo
- Instituto de Investigación, Desarrollo e Innovación en Biotecnología Sanitaria de Elche, Universidad Miguel Hernández, Elche, 03202 Alicante, Spain
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10
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Etsassala NGER, Cupido CN, Iwuoha EI, Hussein AA. Abietane Diterpenes as Potential Candidates for the Management of Type 2 Diabetes. Curr Pharm Des 2021; 26:2885-2891. [PMID: 32228419 DOI: 10.2174/1381612826666200331082917] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 03/03/2020] [Indexed: 02/07/2023]
Abstract
Diabetes mellitus (DM) is considered one of the most common metabolic disorders with an elevated morbidity and mortality rate. It is characterised by a deficiency in insulin secretion or degradation of secreted insulin. Many internal and external factors, such as oxidative stress, obesity and sedentary lifestyle, among others, have been suggested as the major causes of these cell alterations. Diabetes I and II are the most common types of diabetes. Treatment of type I requires insulin injection, while type II can be managed using different synthetic antidiabetic agents. However, their effectiveness is limited as a result of low bioavailability, high cost of drug production, and unfavourable side effects. There is a great need to develop alternative and more active antidiabetic drugs from natural sources. Different forms of natural products have been used since time immemorial as a source of medicine for the purpose of curing numerous human diseases, including diabetes. Secondary metabolites such as polyphenols, flavonoids, terpenoids, alkaloids and several other constituents have direct and indirect roles in controlling such diseases; among them, abietane diterpenes have been reported to display a broad spectrum of promising biological activities including diabetes. This review aimed to summarize existing data from SciFinder (2005-2018) on the biological importance of abietane diterpenes in the prevention and management of type 2 diabetes and closely related diseases.
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Affiliation(s)
- Ninon G E R Etsassala
- Chemistry Department, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
| | - Christopher N Cupido
- Department of Botany, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa
| | - Emmanuel I Iwuoha
- Chemistry Department, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa
| | - Ahmed A Hussein
- Chemistry Department, Cape Peninsula University of Technology, Symphony Rd. Bellville 7535, South Africa
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11
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Yuan X, Sun Y, Zhao P, Zhao L, Xiong Z. Redox-induced target-dependent ratiometric fluorescence sensing strategy and logic gate operation for detection of α-glucosidase activity and its inhibitor. Dalton Trans 2021; 50:9426-9437. [PMID: 34132726 DOI: 10.1039/d1dt01299a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A target-dependent ratiometric fluorescence sensing strategy was designed and fabricated based on a redox reaction for highly sensitive detection of α-glucosidase (α-Glu) activity and its inhibitor. In this study, silicon quantum dots (SiQDs) with excellent optical properties and two-dimensional (2D) cobalt oxyhydroxide (CoOOH) nanosheets were successfully prepared and exploited for the detection of analytes. The CoOOH nanosheets are able to oxidize o-phenylenediamine (OPD), and the product 2,3-diaminophenazine (oxOPD) not only quenches the blue fluorescence of SiQDs (440 nm) by the inner filter effect (IFE) but also emits orange fluorescence (565 nm). α-Glu can catalytically hydrolyze l-ascorbic acid-2-O-α-d-glucopyranosyl (AA2G) to produce ascorbic acid (AA). The redox between AA and CoOOH could lead to the damage of CoOOH nanosheets, thereby inhibiting the oxidization of OPD and effectively preserving the fluorescence of SiQDs. Thus, ratiometric detection of α-Glu activity was achieved according to the AA-dependent dual-fluorescence signal responses. Under the optimal conditions, good linearity was obtained in the range of 0.01-6 U mL-1 with a detection limit of 0.004 U mL-1. The IC50 of α-Glu inhibitor acarbose was estimated to be 0.216 μM. The method provides high sensitivity and selectivity for the determination of α-Glu activity and its inhibitor, which has great application potential in clinical diagnosis and anti-diabetic drug screening. Furthermore, a logic gate analytical device was successfully established based on double fluorescence signals, which makes it possible to monitor α-Glu activity by intelligence equipment.
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Affiliation(s)
- Xucan Yuan
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, Shenyang, Liaoning 110016, P. R. China.
| | - Yi Sun
- Beijing Institute for Drug Control, 102206, P. R. China
| | - Pengfei Zhao
- Department of Clinical Pharmacy, Weifang People's Hospital, 151 Guangwen Street Kuiwen District, Weifang, Shandong 261031, P. R. China
| | - Longshan Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, Shenyang, Liaoning 110016, P. R. China.
| | - Zhili Xiong
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Road Shenhe District, Shenyang, Liaoning 110016, P. R. China.
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12
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Zhang X, Li G, Wu D, Yu Y, Hu N, Wang H, Li X, Wu Y. Emerging strategies for the activity assay and inhibitor screening of alpha-glucosidase. Food Funct 2020; 11:66-82. [DOI: 10.1039/c9fo01590f] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The high incidence of diabetes mellitus has caused widespread concern around the world, and has quickly become one of the most prevalent and costly chronic diseases.
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Affiliation(s)
- Xianlong Zhang
- School of Food and Biological Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Guoliang Li
- School of Food and Biological Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
- Key Laboratory of Life-Organic Analysis of Shandong Province
| | - Di Wu
- Yangtze Delta Region Institute of Tsinghua University
- China
| | - Yanxin Yu
- School of Food and Biological Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Na Hu
- Key Laboratory of Tibetan Medicine Research & Qinghai Provincial Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Xining 810001
- China
| | - Honglun Wang
- Key Laboratory of Tibetan Medicine Research & Qinghai Provincial Key Laboratory of Tibetan Medicine Research
- Northwest Institute of Plateau Biology
- Chinese Academy of Sciences
- Xining 810001
- China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health
- Beijing Technology and Business University
- Beijing 100048
- China
| | - Yongning Wu
- Key Laboratories of Chemical Safety and Health
- China National Center for Food Safety Risk Assessment
- Beijing 100050
- China
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13
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Etsassala NGER, Badmus JA, Waryo TT, Marnewick JL, Cupido CN, Hussein AA, Iwuoha EI. Alpha-Glucosidase and Alpha-Amylase Inhibitory Activities of Novel Abietane Diterpenes from Salvia africana-lutea. Antioxidants (Basel) 2019; 8:E421. [PMID: 31547166 PMCID: PMC6827013 DOI: 10.3390/antiox8100421] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/16/2019] [Accepted: 08/17/2019] [Indexed: 01/09/2023] Open
Abstract
The re-investigation of a methanolic extract of Salvia africana-lutea collected from the Cape Floristic Region, South Africa (SA), afforded four new abietane diterpenes, namely 19-acetoxy-12-methoxycarnosic acid (1), 3β-acetoxy-7α-methoxyrosmanol (2), 19-acetoxy-7α-methoxyrosmanol (3), 19-acetoxy-12-methoxy carnosol (4), and two known named clinopodiolides A (5), and B (6), in addition to four known triterpenes, oleanolic, and ursolic acids (7, 8), 11,12-dehydroursolic acid lactone (9) and β-amyrin (10). The chemical structural elucidation of the isolated compounds was determined on the basis of one and two dimensional nuclear magnetic resonance (1D and 2D NMR), high-resolution mass spectrometry (HRMS), ultra violet (UV), fourier transform infrared (IR), in comparison with literature data. The in vitro bio-evaluation against alpha-glucosidase showed strong inhibitory activities of 8, 10, and 7, with the half inhibitory concentration (IC50) values of 11.3 ± 1.0, 17.1 ± 1.0 and 22.9 ± 2.0 µg/mL, respectively, while 7 demonstrated the strongest in vitro alpha-amylase inhibitory activity among the tested compounds with IC50 of 12.5 ± 0.7 µg/mL. Additionally, some of the compounds showed significant antioxidant capacities. In conclusion, the methanolic extract of S. africana-lutea is a rich source of terpenoids, especially abietane diterpenes, with strong antioxidant and anti-diabetic activities that can be helpful to modulate the redox status of the body and could therefore be an excellent candidate for the prevention of the development of diabetes, a disease where oxidase stress plays an important role.
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Affiliation(s)
- Ninon G E R Etsassala
- Chemistry Department, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa.
| | - Jelili A Badmus
- Oxidative Stress Research Unit, Cape Peninsula University of Technology, Symphony Rd. Bellville 7535, South Africa.
| | - Tesfaye T Waryo
- Chemistry Department, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa.
| | - Jeanine L Marnewick
- Oxidative Stress Research Unit, Cape Peninsula University of Technology, Symphony Rd. Bellville 7535, South Africa.
| | - Christopher N Cupido
- Department of Botany, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa.
| | - Ahmed A Hussein
- Chemistry Department, Cape Peninsula University of Technology, Symphony Rd. Bellville 7535, South Africa.
| | - Emmanuel I Iwuoha
- Chemistry Department, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa.
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14
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Zhong Y, Yu L, He Q, Zhu Q, Zhang C, Cui X, Zheng J, Zhao S. Bifunctional Hybrid Enzyme-Catalytic Metal Organic Framework Reactors for α-Glucosidase Inhibitor Screening. ACS APPLIED MATERIALS & INTERFACES 2019; 11:32769-32777. [PMID: 31423772 DOI: 10.1021/acsami.9b11754] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The screening strategy based on α-glucosidase inhibition has been widely employed for the discovery of antidiabetic drugs, but it still faces some challenges in practical applications, such as poor stability of enzyme, high consumption of test compounds, low sensitivity of screening methods and so on. In this work, a bifunctional hybrid enzyme-catalytic metal organic framework reactor (GAA@GOx@Cu-MOF) with a flower-shaped globular structure was innovatively prepared via self-assembling of α-glucosidase (GAA), glucose oxidase (GOx), Cu2+, and 4,4'-bipyridine. It was found that GAA@GOx@Cu-MOF not only enjoyed merits of high stability, selectivity, and sensitivity but also possessed the character of assembly line work, with about 4.58 times enhanced enzyme activity compared with the free enzyme system. Based on the above characteristics, a highly sensitive screening of GAA inhibitors could be achieved with the detection limit of 7.05 nM for acarbose. Furthermore, the proposed method was successfully applied to the screening of oleanolic acid derivatives as potential antidiabetic drugs. Therefore, it was expected that this work could provide new insights and inspirations for the screening of clinical antidiabetic drugs and for further exploration of functional MOF composites.
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Affiliation(s)
- Yingying Zhong
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China
| | - Linjin Yu
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China
| | - Qiyi He
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China
| | - Qiuyan Zhu
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China
| | - Chunguo Zhang
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China
| | - Xiping Cui
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China
| | - Junxia Zheng
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China
| | - Suqing Zhao
- Department of Pharmaceutical Engineering, School of Biomedical and Pharmaceutical Sciences , Guangdong University of Technology , Guangzhou 510006 , People's Republic of China
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15
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Ratiometric fluorescence monitoring of α-glucosidase activity based on oxidase-like property of MnO 2 nanosheet and its application for inhibitor screening. Anal Chim Acta 2019; 1077:225-231. [PMID: 31307713 DOI: 10.1016/j.aca.2019.05.037] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 05/14/2019] [Accepted: 05/15/2019] [Indexed: 02/02/2023]
Abstract
In recent years, α-glucosidase (α-Glu) inhibitor has been widely used in clinic for diabetic and HIV therapy. Although different systems have been constructed for sensitive and selective detection of α-Glu and screening its inhibitor, the method based on ratiometric fluorescence for α-glucosidase inhibitor screening remains poorly investigated. Herein, we constructed a new MnO2 nanosheet (NS)-based ratiometric fluorescent sensor for α-glucosidase activity assay and its inhibitor screening. MnO2 NS as an oxidase-mimicking nanomaterial directly oxidized o-phenylenediamine (OPD) into 2,3-diaminophenazine (DAP) which had a strong fluorescence emission at 575 nm, whereas the fluorescence of Ag nanoclusters (NCs) at 450 nm was then quenched by the generated DAP through inner filter effect (IFE). When 2-O-α-d-glucopyranosyl-l-ascorbic acid (AAG) as α-Glu substrate and α-Glu were introduced into the above system, MnO2 NS would be reduced to Mn2+ and lose the oxidase-like property since ascorbic acids (AA) were released with the hydrolysis of AAG by α-Glu. Thus, DAP would not be produced and IFE was stopped accompanying with the fluorescence decrease of DAP and fluorescence increase of AgNCs. A ratiometric fluorescent α-Glu nanosensor was thus developed. The fluorescence intensity ratio of DAP to AgNCs linearly decreased with the increasing of α-Glu concentrations in the range of 0.2-8 U mL-1, and limit of detection was 0.03 U mL-1. This proposed sensing approach was also expanded to α-Glu inhibitor screening and showed excellent applicability. As a typical α-Glu inhibitor, acarbose was investigated with a low detection limit of 10-8 M. The constructed sensor platform was proven to be sensitive and selective as well as simple, label-free and low-cost, making it promising for the accurate diagnosis of relevant disease and discovery of potential drugs.
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16
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Yue X, Su L, Chen X, Liu J, Zheng L, Zhang J. A new method for the in situ assay of α-glucosidase activity and inhibitor screening through an enzyme substrate-mediated DNA hybridization chain reaction. NEW J CHEM 2019. [DOI: 10.1039/c9nj01868a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The strategy is based on small molecule-mediated hybridization chain reaction.
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Affiliation(s)
- Xiquan Yue
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Lihong Su
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Xu Chen
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Junfeng Liu
- Department of Orthopedics
- Shanghai Tenth People's Hospital
- Tongji University School of Medicine
- Shanghai 200072
- P. R. China
| | - Longpo Zheng
- Department of Orthopedics
- Shanghai Tenth People's Hospital
- Tongji University School of Medicine
- Shanghai 200072
- P. R. China
| | - Juan Zhang
- Center for Molecular Recognition and Biosensing
- School of Life Sciences
- Shanghai University
- Shanghai 200444
- P. R. China
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17
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Li J, He G, Wang B, Shi L, Gao T, Li G. Fabrication of reusable electrochemical biosensor and its application for the assay of α-glucosidase activity. Anal Chim Acta 2018; 1026:140-146. [PMID: 29852990 DOI: 10.1016/j.aca.2018.04.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 03/24/2018] [Accepted: 04/12/2018] [Indexed: 01/21/2023]
Abstract
A reusable biosensor has been fabricated in this work for the assay of α-glucosidase activity and the inhibitor screening. In this design, the aptamer of ATP is split as split aptamer 1 (Apt 1) and split aptamer 2 (Apt 2), and Apt 2 can link gold nanoparticles (AuNPs) modified with Apt 1 and 4-aminophenyl-α-d-glucopyranoside (pAPG). Consequently, the functional AuNPs can be immobilized onto the surface of gold electrode, allowing for salt-induced regeneration. In the presence of α-glucosidase, the glycosyl of pAPG is cut off, and the electroactive phenolic hydroxyls appear to give a strong current signal. Furthermore, the biosensor can be recovered very easily by incubating it in water to dissociate the AuNPs modified with Apt 1 and pAPG. So, a new biosensor for α-glucosidase activity detection and inhibitor screening is developed based on enzyme-activated signal generation and recovery. The biosensor may also exhibit good sensitivity for α-glucosidase determination with the detection limit 0.005 U/mL and can be reused by water-washing regeneration with good repeatability. Meanwhile this biosensor can also be utilized for inhibitor screening, which may have potential for clinical applications.
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Affiliation(s)
- Jinlong Li
- State Key Laboratory of Pharmaceutical Biotechnology and Collaborative Innovation Center of Chemistry for Life Sciences, Department of Biochemistry, Nanjing University, Nanjing, 210093, PR China; Department of Laboratory Medicine, The Second Affiliated Hospital of Southeast University, Nanjing, 210003, PR China
| | - Guangwu He
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, PR China
| | - Bei Wang
- State Key Laboratory of Pharmaceutical Biotechnology and Collaborative Innovation Center of Chemistry for Life Sciences, Department of Biochemistry, Nanjing University, Nanjing, 210093, PR China
| | - Liu Shi
- State Key Laboratory of Pharmaceutical Biotechnology and Collaborative Innovation Center of Chemistry for Life Sciences, Department of Biochemistry, Nanjing University, Nanjing, 210093, PR China
| | - Tao Gao
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China
| | - Genxi Li
- State Key Laboratory of Pharmaceutical Biotechnology and Collaborative Innovation Center of Chemistry for Life Sciences, Department of Biochemistry, Nanjing University, Nanjing, 210093, PR China; Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, China.
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18
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Kahveci Z, Martínez-Tomé MJ, Mallavia R, Mateo CR. Fluorescent Biosensor for Phosphate Determination Based on Immobilized Polyfluorene-Liposomal Nanoparticles Coupled with Alkaline Phosphatase. ACS APPLIED MATERIALS & INTERFACES 2017; 9:136-144. [PMID: 27966351 DOI: 10.1021/acsami.6b12434] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This work describes the development of a novel fluorescent biosensor based on the inhibition of alkaline phosphatase (ALP). The biosensor is composed of the enzyme ALP and the conjugated cationic polyfluorene HTMA-PFP. The working principle of the biosensor is based on the fluorescence quenching of this polyelectrolyte by p-nitrophenol (PNP), a product of the hydrolysis reaction of p-nitrophenyl phosphate (PNPP) catalyzed by ALP. Because HTMA-PFP forms unstable aggregates in buffer, with low fluorescence efficiency, previous stabilization of the polyelectrolyte was required before the development of the biosensor. HTMA-PFP was stabilized through its interaction with lipid vesicles to obtain stable blue-emitting nanoparticles (NPs). Fluorescent NPs were characterized, and the ability to be quenched by PNP was evaluated. These nanoparticles were coupled to ALP and entrapped in a sol-gel matrix to produce a biosensor that can serve as a screening platform to identify ALP inhibitors. The components of the biosensor were examined before and after sol-gel entrapment, and the biosensor was optimized to allow the determination of phosphate ion in aqueous medium.
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Affiliation(s)
- Zehra Kahveci
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández , 03202, Elche, Alicante, Spain
| | - Maria José Martínez-Tomé
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández , 03202, Elche, Alicante, Spain
| | - Ricardo Mallavia
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández , 03202, Elche, Alicante, Spain
| | - C Reyes Mateo
- Instituto de Biología Molecular y Celular, Universidad Miguel Hernández , 03202, Elche, Alicante, Spain
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19
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Gao W, Wang W, Yao S, Wu S, Zhang H, Zhang J, Jing F, Mao H, Jin Q, Cong H, Jia C, Zhang G, Zhao J. Highly sensitive detection of multiple tumor markers for lung cancer using gold nanoparticle probes and microarrays. Anal Chim Acta 2016; 958:77-84. [PMID: 28110687 DOI: 10.1016/j.aca.2016.12.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 10/18/2016] [Accepted: 12/07/2016] [Indexed: 01/10/2023]
Abstract
Assay of multiple serum tumor markers such as carcinoembryonic antigen (CEA), cytokeratin 19 fragment antigen (CYFRA21-1), and neuron specific enolase (NSE), is important for the early diagnosis of lung cancer. Dickkopf-1 (DKK1), a novel serological and histochemical biomarker, was recently reported to be preferentially expressed in lung cancer. Four target proteins were sandwiched by capture antibodies attached to microarrays and detection antibodies carried on modified gold nanoparticles. Optical signals generated by the sandwich structures were amplified by gold deposition with HAuCl4 and H2O2, and were observable by microscopy or the naked eye. The four tumor markers were subsequently measured in 106 lung cancer patients and 42 healthy persons. The assay was capable of detecting multiple biomarkers in serum sample at concentration of <1 ng mL-1 in 1 h. Combined detection of the four tumor markers highly improved the sensitivity (to 87.74%) for diagnosis of lung cancer compared with sensitivity of single markers. A rapid, highly sensitive co-detection method for multiple biomarkers based on gold nanoparticles and microarrays was developed. In clinical use, it would be expected to improve the early diagnosis of lung cancer.
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Affiliation(s)
- Wanlei Gao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wentao Wang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China; The department of Respiratory Medicine of The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Shihua Yao
- Changhai Hospital, Second Military Medical University, Shanghai, 200433, China
| | - Shan Wu
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China; Center of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Honglian Zhang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Jishen Zhang
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Fengxiang Jing
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Hongju Mao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Qinghui Jin
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
| | - Hui Cong
- Center of Laboratory Medicine, Affiliated Hospital of Nantong University, Nantong, Jiangsu, 226001, China
| | - Chunping Jia
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China.
| | - Guojun Zhang
- The department of Respiratory Medicine of The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China.
| | - Jianlong Zhao
- State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, 200050, China
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20
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Dwivedi AK, Singh R, Singh A, Wei KH, Wu CY, Lyu PC, Lin HC. Novel Water-Soluble Cyclodextrin-Based Conjugated Polymer for Selective Host–Guest Interactions of Cationic Surfactant CTAB and Reverse FRET with Rhodamine B Tagged Adamantyl Guest. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b00789] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Atul Kumar Dwivedi
- Department
of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Ravinder Singh
- Department
of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Ashutosh Singh
- Department
of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Kung-Hwa Wei
- Department
of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Chu-Ya Wu
- Institute
of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Ping-Chiang Lyu
- Institute
of Bioinformatics and Structural Biology, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Hong-Cheu Lin
- Department
of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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21
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Zhang J, Liu Y, Wang X, Chen Y, Li G. Electrochemical assay of α-glucosidase activity and the inhibitor screening in cell medium. Biosens Bioelectron 2015. [DOI: 10.1016/j.bios.2015.07.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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22
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Liu SY, Wang H, He T, Qi L, Zhang ZQ. Sensitive fluorimetric assays for α-glucosidase activity and inhibitor screening based on β-cyclodextrin-coated quantum dots. LUMINESCENCE 2015; 31:96-101. [PMID: 25962377 DOI: 10.1002/bio.2929] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 03/26/2015] [Accepted: 04/03/2015] [Indexed: 12/13/2022]
Abstract
A fluorescence method was established for a α-glucosidase activity assay and inhibitor screening based on β-cyclodextrin-coated quantum dots. p-Nitrophenol, the hydrolysis product of the α-glucosidase reaction, could quench the fluorescence of β-cyclodextrin-coated quantum dots via an electron transfer process, leading to fluorescence turn-off, whereas the fluorescence of the system turned on in the presence of α-glucosidase inhibitors. Taking advantage of the excellent properties of quantum dots, this method provided a very simple, rapid and sensitive screening method for α-glucosidase inhibitors. Two α-glucosidase inhibitors, 2,4,6-tribromophenol and acarbose, were used to evaluate the feasibility of this screening model, and IC50 values of 24 μM and 0.55 mM were obtained respectively, which were lower than those previously reported. The method may have potential application in screening α-glucosidase inhibitors.
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Affiliation(s)
- Si-Yao Liu
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Huan Wang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Tian He
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Liang Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
| | - Zhi-Qi Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China
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23
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Chen H, Zhang J, Wu H, Koh K, Yin Y. Sensitive colorimetric assays for α-glucosidase activity and inhibitor screening based on unmodified gold nanoparticles. Anal Chim Acta 2015; 875:92-8. [PMID: 25937110 DOI: 10.1016/j.aca.2015.02.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Revised: 02/03/2015] [Accepted: 02/10/2015] [Indexed: 12/16/2022]
Abstract
A colorimetric sensor has been developed in this work to sensitively detect α-glucosidase activity and screen α-glucosidase inhibitors (AGIs) utilizing unmodified gold nanoparticles (AuNPs). The sensing strategy is based on triple-catalytic reaction triggered by α-glucosidase. In the presence of α-glucosidase, aggregation of AuNPs is prohibited due to the oxidation of cysteine to cystine in the system. However, with addition of AGIs, cysteine induced aggregation of AuNPs occurs. Thus, a new method for α-glucosidase activity detection and AGIs screening is developed by measuring the UV-vis absorption or visually distinguishing. A well linear relation is presented in a range of 0.0025-0.05 U mL(-1). The detection limit is found to be 0.001 U mL(-1) for α-glucosidase assay, which is one order of magnitude lower than other reports. The IC50 values of four kinds of inhibitors observed with this method are in accordance with other reports. The using of unmodified AuNPs in this work avoids the complicated and time-consuming modification procedure. This simple and efficient colorimetric method can also be extended to other enzymes assays.
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Affiliation(s)
- Hongxia Chen
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Jiangjiang Zhang
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Heng Wu
- Laboratory of Biosensing Technology, School of Life Sciences, Shanghai University, Shanghai 200444, PR China
| | - Kwangnak Koh
- Institute of General Education, Pusan National University, Pusan 609-735, Republic of Korea
| | - Yongmei Yin
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China.
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24
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Yuan F, Zhao H, Zhang Z, Gao L, Xu J, Quan X. Fluorescent biosensor for sensitive analysis of oxytetracycline based on an indirectly labelled long-chain aptamer. RSC Adv 2015. [DOI: 10.1039/c5ra04025f] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
A fluorescent assay for oxytetracycline detection is presented based on an indirectly fluorescein-labelled aptamer probe, which was fabricated through hybridization of an oxytetracycline long-chain aptamer with a FAM-labelled short-chain ssDNA.
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Affiliation(s)
- Fang Yuan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Huimin Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Zhinan Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Lichen Gao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Jintao Xu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Xie Quan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China)
- School of Environmental Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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Bilalis P, Katsigiannopoulos D, Avgeropoulos A, Sakellariou G. Non-covalent functionalization of carbon nanotubes with polymers. RSC Adv 2014. [DOI: 10.1039/c3ra44906h] [Citation(s) in RCA: 235] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Zhao B, Yan J, Wang D, Ge Z, He S, He D, Song S, Fan C. Carbon nanotubes multifunctionalized by rolling circle amplification and their application for highly sensitive detection of cancer markers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2013; 9:2595-2601. [PMID: 23505134 DOI: 10.1002/smll.201202957] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 01/16/2013] [Indexed: 06/01/2023]
Abstract
There are still challenges for the development of multifunctional carbon nanotubes (CNTs). Here, a multiwalled carbon nanotube (MWCNT)-based rolling circle amplification system (CRCAS) is reported which allows in situ rolling circle replication of DNA primer on the surface of MWCNTs to create a long single-strand DNA (ssDNA) where a large number of nanoparticles or proteins could be loaded, forming a nano-biohybridized 3D structure with a powerful signal amplification ability. In this strategy, the binding ability of proteins, hybridization, replication ability of DNA, and the catalytical ability of enzymes are integrated on a single carbon nanotube. The CRCAS is then used to develop colorimetric and chemiluminescent assays for the highly sensitive and specific detection of cancer protein markers, alpha-fetoprotein (AFP) and prostate specific antigen (PSA). The colorimetric CRCAS assay is 4000 times more sensitive than a conventional enzyme-linked immunosorbent assay (ELISA), and its concentration range is 10,000 times wider. Control experiments show that as low as 10 pg mL⁻¹ AFP or PSA could be detected even in the presence of interfering protein markers with a more than 10⁵-fold greater concentration in the sample, demonstrating the high specificity of the CRCAS assay. The limit of detection of the chemiluminescent CRCAS assays for AFP and PSA are 5 fg mL⁻¹ (70 aM) and 10 fg mL⁻¹ (0.29 fM), respectively, indicating that the sensitivity is much higher than that of the colorimetric CRCAS assay. Importantly, CRCAS works well with real biological samples.
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Affiliation(s)
- Bin Zhao
- Laboratory of Physical Biology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
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Song J, Zhang W, Miao K, Zeng H, Cheng S, Fan LJ. Receptor-free poly(phenylenevinylene) fibrous membranes for cation sensing: high sensitivity and good selectivity achieved by choosing the appropriate polymer matrix. ACS APPLIED MATERIALS & INTERFACES 2013; 5:4011-4016. [PMID: 23647403 DOI: 10.1021/am4005336] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Poly(phenylenevinylene)/polyimide (PPV/PI) and poly(phenylenevinylene)/ polymethylmethacrylate (PPV/PMMA) fibrous membranes without any deliberately introduced receptors were prepared as fluorescence sensing materials through electrospinning, followed by thermal treatment. Both of these membranes displayed higher sensitivity toward most cations compared to the corresponding spin-coated films. PPV/PMMA membranes were more sensitive than PPV/PI membranes toward Cu(2+) and Fe(3+). About 4.5 fold of intensity enhancement upon 20 nM of Cu(2+), 80% of quenching upon 20 nM of Fe(3+) with fast response and simple regeneration were realized for PPV/PMMA membrane. The preliminary investigation into the mechanism revealed that the properties of the polymer matrix and thermal treatment of the membrane played important roles in the sensing performance.
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Mao X, Wei M, Zhu C, Lu J, Gao J, Simon AJ, Shi J, Huang Q, Fan C. Real time in vitro regulation of DNA methylation using a 5-fluorouracil conjugated DNA-based stimuli-responsive platform. ACS APPLIED MATERIALS & INTERFACES 2013; 5:2604-2609. [PMID: 23480369 DOI: 10.1021/am3033052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
DNA methylation, catalyzed by methylases, plays a critical role in many biological processes, and many methylases have been regarded as promising targets for antimicrobial drugs. In this work, we report a stimulus responsive, self-regulating anticancer drug release platform, comprising a multifunctional DNA that upon methylation by methyltransferase (MTase) releases 5-fluorouracil (5-Fu) and in turn inhibits subsequent expression of MTase. The multifunctional DNA with anticancer drug are first methylated by DNA adenine methylation (DAM) methyltransferase (MTase) and then cut by the methylation-sensitive restriction endonuclease Dpn I. Removal of duplex from the functional DNA by the methylation/cleavage process will release the anticancer drug, resulting in inhibition of the activity of DAM in turn. Consequently, the enzyme activity of DAM MTase can be self-regulated. Furthermore, we found that the inhibition efficiency of 5-Fu significantly increase as it is functionalized with DNA.
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Affiliation(s)
- Xiuhai Mao
- Laboratory of Physical Biology, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
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