1
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Chen X, Huang Q, Ruan S, Luo F, You R, Feng S, Zhu L, Wu Y, Lu Y. Self-calibration SERS sensor with “core-satellite” structure for detection of hyaluronidase activity. Anal Chim Acta 2022; 1227:340302. [DOI: 10.1016/j.aca.2022.340302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 11/01/2022]
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2
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Li Z, Huang X, Liu H, Luo F, Qiu B, Lin Z, Chen H. Electrochemiluminescence Biosensor for Hyaluronidase Based on the Adjustable Electrostatic Interaction between the Surface-Charge-Controllable Nanoparticles and Negatively Charged Electrode. ACS Sens 2022; 7:2012-2019. [PMID: 35730980 DOI: 10.1021/acssensors.2c00801] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A novel electrochemiluminescence (ECL) biosensor for hyaluronidase (HAase) based on the adjustable electrostatic interaction between the surface-charge-controllable nanoparticles and negatively charged electrode has been devised. Hyaluronic acid (HA)-coated amino-modified ruthenium bipyridine-doped silica nanoparticles (Ru@SiO2-NH2@HA NPs) have been synthesized and act as ECL indicators, and the surface of this particle is negatively charged because HA contains a large amount of OH- and COO-. The strong electrostatic repulsion between the Ru@SiO2-NH2@HA NPs and negatively charged indium tin oxide (ITO) electrode surface leads to the detection of a low-intensity ECL signal. In the presence of HAase, the HA on the surface of the Ru@SiO2-NH2@HA NPs can be decomposed, and the particles can be transformed into positively charged amino-modified ruthenium bipyridine-doped silica nanoparticles (Ru@SiO2-NH2 NPs), which can be concentrated near the surface of the ITO electrode through electrostatic attraction, and result in the detection of an enhanced ECL signal. The ECL of the system has a good linear relationship with HAase concentration in the range of 2.0-60 U/mL, and the limit of detection was 0.37 U/mL. The designed biosensor had been applied to detect the target in real samples with satisfied results.
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Affiliation(s)
- Zhixin Li
- Institute for Advanced Study, Research Center for Differentiation and Development of TCM Basic Theory, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi, China.,Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou 350116, Fujian, China
| | - Xiaoli Huang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Fujian Medical University, Fujian Medical University, Fuzhou 350001, Fujian, China
| | - Hongning Liu
- Institute for Advanced Study, Research Center for Differentiation and Development of TCM Basic Theory, Jiangxi University of Chinese Medicine, Nanchang 330004, Jiangxi, China
| | - Fang Luo
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou 350116, Fujian, China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou 350116, Fujian, China
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou 350116, Fujian, China
| | - Huixing Chen
- Department of Hepatobiliary Surgery and Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fujian Medical University Cancer Center, Fuzhou 350000, Fujian, China
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3
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Ooi JSY, New SY. Design Strategies of Gold Nanoparticles‐Based Biosensors Coupled with Hybridization Chain Reaction or Catalytic Hairpin Assembly. ChemistrySelect 2022. [DOI: 10.1002/slct.202200073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jessica Sui Ying Ooi
- School of Pharmacy University of Nottingham Malaysia Jalan Broga 43500 Semenyih Selangor Malaysia
| | - Siu Yee New
- School of Pharmacy University of Nottingham Malaysia Jalan Broga 43500 Semenyih Selangor Malaysia
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4
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Wang Y, Gao W. A label-free and sensitive fluorescence assay for hyaluronidase activity through electrostatic-controlled quantum dots self-assembly. JOURNAL OF CHEMICAL RESEARCH 2021. [DOI: 10.1177/17475198211018973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A label-free fluorescence assay for hyaluronidase (HAase) activity based on self-assembly of quantum dots is developed. A cationic polymer (polycation) can induce aggregation of the negatively charged quantum dots through electrostatic interactions and the fluorescence of the quantum dots is quenched. When the polycation is mixed with hyaluronic acid (HA), intense binding of HA to the polycation makes the quantum dots free and recovery of the fluorescence of the quantum dots is observed. However, in the presence of HAase, HA is hydrolyzed into small fragments and the polycation induces reaggregation of the quantum dots. A simple and rapid fluorescence sensor with high sensitivity and selectivity for HAase activity detection is therefore successfully established with a detection limit of 0.01 U/mL. Moreover, we have demonstrated an assay that can be applied to detect HAase activity in a complex mixture sample including 1% human serum.
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Affiliation(s)
- Yan Wang
- School of Chemistry and Chemical Engineering, Yulin University, Yulin, People’s Republic of China
| | - Wenwen Gao
- School of Chemistry and Chemical Engineering, Yulin University, Yulin, People’s Republic of China
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5
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Dong N, Cai Q, Li Z, Xu L, Wu H, Lin Z, Qiu B, Li C, Lin Z. Convenient hyaluronidase biosensors based on the target-trigger enhancing of the permeability of a membrane using an electronic balance as a readout. Analyst 2021; 146:3299-3304. [PMID: 33999089 DOI: 10.1039/d1an00257k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The change in hyaluronidase (HAase) is related to specific changes in the structure of vitreous, and it is necessary to develop simple but sensitive methods for HAase detection. In this work, a thin film fabricated from a hyaluronic acid (HA)-polyethyleneimine (PEI) hydrogel has been covered on a mixed cellulose microporous membrane (MCEM) to form a HA-PEI-MCEM firstly and it was then applied in a filtration system. The permeability of the filter membrane greatly affects the amount of water passing through within a certain time and the water can be collected and quantitatively measured with a simple electronic balance easily. The low permeability of the HA-PEI-MCEM allows a small amount of water to be drained. But after the addition of HAase, which can hydrolyze HA in the hydrogel, the permeability of the membrane increased. Therefore, the amount of water passing through the HA-PEI-MCEM composite membrane increased accordingly. The composite of the membrane, and the reaction conditions after the addition of HAase were optimized. Under the optimized conditions, the amount of water collected within 5 min showed a linear relationship with the HAase concentration in a range of 1.0-36 U mL-1 with a limit of detection of 0.35 U mL-1.The proposed method has been applied to detect HAase in vitreous samples with satisfactory results.
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Affiliation(s)
- Nuo Dong
- Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China. and Department of Ophthalmology, Affiliated People's Hospital & Zhenjiang Kangfu Eye Hospital, Jiangsu University, Zhenjiang, Jiangsu, China and Fujian Provincial Key Laboratory of Ocular Surface and Corneal Disease, Xiamen, Fujian, China
| | - Qing Cai
- Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.
| | - Zhixin Li
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, China.
| | - Liangzhen Xu
- Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.
| | - Huping Wu
- Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China. and Fujian Provincial Key Laboratory of Ocular Surface and Corneal Disease, Xiamen, Fujian, China
| | - Zhirong Lin
- Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China. and Fujian Provincial Key Laboratory of Ocular Surface and Corneal Disease, Xiamen, Fujian, China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, China.
| | - Cheng Li
- Eye Institute & Affiliated Xiamen Eye Center, School of Medicine, Xiamen University, Xiamen, Fujian, China.
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, China.
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6
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Raj P, Lee SY, Lee TY. Carbon Dot/Naphthalimide Based Ratiometric Fluorescence Biosensor for Hyaluronidase Detection. MATERIALS 2021; 14:ma14051313. [PMID: 33803381 PMCID: PMC7967242 DOI: 10.3390/ma14051313] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 02/27/2021] [Accepted: 03/07/2021] [Indexed: 12/14/2022]
Abstract
Bladder cancer is the leading cause of death in patients with genitourinary cancer. An elevated level of hyaluronidase (HAase) was found in bladder cancer, which acts as an important biomarker for the early diagnosis of bladder cancer. Hence, there is a need to develop a simple enzymatic assay for the early recognition of HAase. Herein, we report a simple, sensitive, and ratiometric fluorescence assay for HAase detection under physiological conditions. The fluorescence assay was constructed by the adsorption of cationic carbon dots and positively charged naphthalimide on negatively charged hyaluronic acid and the development of a Förster resonance energy transfer (FRET) mechanism from carbon dots to a naphthalimide fluorophores. The hyaluronidase enzyme cleaves the hyaluronic acid in this assay, and breaking down the FRET mechanism induces ratiometric changes. A detection limit of 0.09 U/mL was achieved, which is less than the HAase level found in normal human body fluids. Moreover, this assay may be used for diagnosing HAase-related diseases.
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Affiliation(s)
- Pushap Raj
- Department of Convergence System Engineering and Department of Biomedical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea;
| | - Seon-yeong Lee
- Department of Technology Education, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea;
| | - Tae Yoon Lee
- Department of Convergence System Engineering and Department of Biomedical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea;
- Department of Technology Education, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea;
- Correspondence:
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7
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Lee D, Hussain S, Yeo J, Pang Y. Adsorption of dipeptide L-alanyl-L-tryptophan on gold colloidal nanoparticles studied by surface-enhanced Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 247:119064. [PMID: 33091739 DOI: 10.1016/j.saa.2020.119064] [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: 07/06/2020] [Revised: 09/08/2020] [Accepted: 10/06/2020] [Indexed: 06/11/2023]
Abstract
Surface adsorption of a dipeptide L-alanyl-L-tryptophan (Ala-Trp) on gold nanoparticles reduced by citrate (CT) and borohydride (BH) ions was investigated by a surface-enhanced Raman scattering (SERS) technique. Two distinct SERS spectra of Ala-Trp depending on the types of gold nanoparticles were observed, and the vibrational assignments were based on the density functional theory simulations and the previous SERS results of Trp. Ala-Trp mainly adsorbs through the amine group on CT gold nanoparticles with a perpendicular orientation of the indole ring to the surface. In contrast, the adsorption occurs via the π electrons of the indole ring on the BH gold surfaces while maintaining a flat geometry of the indole ring to the surface. The amide I band of Ala-Trp was observed only with the CT gold colloids in acidic and neutral conditions where partial surface adsorption via the amide group is expected.
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Affiliation(s)
- Daedu Lee
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Shafqat Hussain
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Juhyun Yeo
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Yoonsoo Pang
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea.
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8
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Wang W, Li D, Zhang Y, Zhang W, Ma P, Wang X, Song D, Sun Y. One-pot synthesis of hyaluronic acid-coated gold nanoparticles as SERS substrate for the determination of hyaluronidase activity. Mikrochim Acta 2020; 187:604. [PMID: 33037925 DOI: 10.1007/s00604-020-04566-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 09/25/2020] [Indexed: 01/08/2023]
Abstract
A novel ultrasensitive surface-enhanced Raman spectroscopy (SERS)-based method was developed for the determination of hyaluronidase (HAase), which was based on hyaluronic acid-coated gold nanoparticles (HA-AuNPs) as a substrate, via a facile one-pot method. The detection mechanism is based on HAase which can hydrolyze HA on HA-AuNPs into hyaluronic acid oligomers, causing the originally uniformly dispersed HA-AuNPs to be disintegrated into many smaller HA-AuNPs. These oligomers in turn increase the surface shielding of AuNPs, resulting in high aggregation tendencies. As a result, the original SERS substrate was disassembled, leading to a weakening of the SERS signal at 1173 cm-1. Malachite green was also used as a Raman probe to detect the change of SERS peak intensity and to quantify HAase. Compared with other methods for the determination of HAase, this method is more convenient and efficient; its determination limit was 0.4 mU mL-1. The recoveries of HAase spiked into human urine samples ranged from 97.2 to 103.9%.
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Affiliation(s)
- Wei Wang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Dan Li
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Yue Zhang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Wei Zhang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Pinyi Ma
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China.
| | - Xinghua Wang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Daqian Song
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China
| | - Ying Sun
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun, 130012, China.
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9
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Farmani MR, Peyman H, Roshanfekr H. Blue luminescent graphene quantum dot conjugated cysteamine functionalized-gold nanoparticles (GQD-AuNPs) for sensing hazardous dye Erythrosine B. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 229:117960. [PMID: 31869680 DOI: 10.1016/j.saa.2019.117960] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 12/13/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
Erythrosine B (ErB) is a xanthenes approved dye that widely used in various fields such as foods, drugs and cosmetics. This work intended to analyze the interaction of this dye on synthesized graphene quantum dot conjugated cysteamine functionalized gold nanoparticles. Pyrolysis of citric acid was applied to graphene quantum dots (GQDs) synthesis. These are zero dimensional materials promising considerable applications because of their extraordinary physicochemical properties. In this work, to improve its applications conjugates of GQDs and gold nanoparticles (GQD-AuNPs) are synthesized and characterized with FESEM, TEM, EDX and FTIR techniques. Interaction of ErB with synthesized conjugates was investigated using fluorescence technique and the results demonstrate that ErB can quench fluorescence of GQD-AuNPs conjugates, considerably. At last, we used of this good interaction for construction sensor for detection of ErB in the concentration range of 1.2 nM to 50 nM and the obtained LOD was 0.03 nM (S/N = 3) with correlation coefficient of (99%).
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Affiliation(s)
| | - Hossein Peyman
- Department of Chemistry, Ilam Branch, Islamic Azad University, Ilam, Iran.
| | - Hamideh Roshanfekr
- Department of Chemistry, Ilam Branch, Islamic Azad University, Ilam, Iran
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10
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Si Y, Li L, He B, Li J. A novel surface-enhanced Raman scattering-based ratiometric approach for detection of hyaluronidase in urine. Talanta 2020; 215:120915. [PMID: 32312457 DOI: 10.1016/j.talanta.2020.120915] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 03/06/2020] [Accepted: 03/09/2020] [Indexed: 02/01/2023]
Abstract
A ratiometric surface-enhanced Raman scattering (SERS) based method is described for the determination of the activity of hyaluronidase (HAase). Gold nanorods (AuNRs) were functionalized with 4-thiobenzonitrile (TBN) to act as the Raman reporter (TBN-AuNRs), and 4-thiophenylacetylene-functionalized gold-silver alloy nanoparticles (TPA-AuAgNPs) were used as the reference. Hyaluronic acid (HA) acts as the HAase recognition element. The TBN-modified AuNRs aggregate in the presence of HA due to the strong electrostatic interaction between the positively charged TBN-AuNRs and negatively charged HA. This strongly enhances the Raman signal of TBN at 2220 cm-1. However, HA has no significant effect on the dispersion of the modified AuAg NPs which are electroneutral. Hence, no change can be seen in the Raman intensity of TPA at 1974 cm-1. In the presence of HAase, HA is digested into smaller fragments. This results in good dispersion of the TBN-AuNRs and a weaker TBN Raman signal. Hence, the ratio of the Raman peaks at 1974 and 2220 cm-1 increases. Under the optimized conditions, the ratio changes in the 5-70 U mL-1 HAase activity range, and the detection limit is 1.7 U mL-1 (based on the 3σ rule). Moreover, this method has been successfully applied in the determination of the activity of HAase in artificial urine and it is expected to be a new method for the diagnosis of cancer, especially bladder cancer.
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Affiliation(s)
- Yanmei Si
- Academician Workstation, Changsha Medical University, Changsha, 410219, China; State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Lulu Li
- State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China
| | - Binsheng He
- Academician Workstation, Changsha Medical University, Changsha, 410219, China.
| | - Jishan Li
- Academician Workstation, Changsha Medical University, Changsha, 410219, China; State Key Laboratory of Chemo/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China.
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11
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Li Z, Zhang J, Chen H, Huang X, Huang D, Luo F, Wang J, Guo L, Qiu B, Lin Z. Electrochemiluminescence Biosensor for Hyaluronidase Based on the Ru(bpy) 32+ Doped SiO 2 Nanoparticles Embedded in the Hydrogel Fabricated by Hyaluronic Acid and Polyethylenimine. ACS APPLIED BIO MATERIALS 2020; 3:1158-1164. [PMID: 35019317 DOI: 10.1021/acsabm.9b01082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hyaluronidase (HAase), a specific enzyme of hyaluronic acid (HA), has been reported as a potential tumor biomarker in recent years. Hence, developing some simple, rapid, and sensitive methods for HAase assay is necessary. In this work, a simple and sensitive biosensor constructed by a reliable controlled release system and a mature electrochemiluminescence (ECL) analytical technique has been devised for the quantification of HAase with high efficiency and selectivity. Tris (2,2'-bipyridyl) ruthenium(II) chloride hexahydrate doped SiO2 nanoparticles (Ru@SiO2 NPs), as ECL signal probes, were trapped in the hydrogel fabricated by HA and polyethylenimine evenly and steadily. When HAase existed, the hydrogel was decomposed by HAase, and the Ru@SiO2 NPs escaped from the hydrogel into the supernate. The ECL signal produced from the supernate can be detected and used to characterize HAase concentration. The result showed a good linear relationship between ECL intensity, and HAase concentration ranged from 2 to 60 U/mL and the limit of detection was 2 U/mL. The developed controlled release ECL biosensor has been used for HAase quantification in urine samples with satisfactory results.
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Affiliation(s)
| | | | - Huixing Chen
- Department of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian 350000, China
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12
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Wai JL, New SY. Cysteamine-coated gold nanoparticles for bimodal colorimetric detection with inverse sensitivity: a proof-of-concept with lysozyme. RSC Adv 2020; 10:1088-1094. [PMID: 35494456 PMCID: PMC9047514 DOI: 10.1039/c9ra07930k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/11/2019] [Indexed: 12/12/2022] Open
Abstract
Cysteamine-coated gold nanoparticles (cysAuNPs) are positively charged as-synthesised and hence can interact with negatively charged DNA with ease. We have investigated the dependency of the particles' dispersion stage on different concentrations of lysozyme-binding aptamer (LBA). On top of the commonly reported phenomenon where cysAuNPs aggregate as the concentration of LBA increases, we observed that cysAuNPs redispersed after the amount of LBA achieved a certain threshold, dubbed as the critical redispersion concentration (CRC). By harnessing the aggregation and dispersion behaviour of cysAuNPs at LBA below and above the CRC, respectively, we have demonstrated a bimodal colorimetric aptasensor to detect lysozyme as a proof-of-concept study. Apart from being able to quantify the lysozyme in different ranges of concentrations with a visual change in colour, this aptasensor also demonstrated a novel concept of inverse sensitivity (i.e. higher signal with less analyte), leading to a 24-fold higher of signal-to-noise ratio (SNR), in comparison to the conventional sensors. The aptasensor can also selectively distinguish lysozyme and eliminate false results from other control proteins via both modes. The generalisability, as well as potential of cysAuNPs for bimodal colorimetric detection and inverse sensitivity behaviour have made this material an interesting alternative to citrate-coated AuNPs. An aptasensor derived from cysteamine-gold nanoparticles for bimodal colorimetric detection and with inverse sensitivity pattern.![]()
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Affiliation(s)
- Jing Luen Wai
- School of Pharmacy
- University of Nottingham Malaysia
- Malaysia
| | - Siu Yee New
- School of Pharmacy
- University of Nottingham Malaysia
- Malaysia
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13
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Thompson B, Bhargava KC, Czaja AT, Pan B, Samuelsen BT, Malmstadt N. Spectrophotometry in modular microfluidic architectures. BIOMICROFLUIDICS 2019; 13:064121. [PMID: 31832119 PMCID: PMC6892708 DOI: 10.1063/1.5124303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
Assays for chemical biomarkers are a vital component in the ecosystem of noninvasive disease state assessment, many of which rely on quantification by colorimetric reactions or spectrophotometry. While modern advances in microfluidic technology have enabled such classes of devices to be employed in medical applications, the challenge has persisted in adapting the necessary tooling and equipment to integrate spectrophotometry into a microfluidic workflow. Spectrophotometric measurements are common in biomarker assays because of straightforward acquisition, ease of developing the assay's mechanism of action, and ease of tuning sensitivity. In this work, 3D-printed, discrete microfluidic elements are leveraged to develop a model system for assaying hyaluronidase, a urinary biomarker of bladder cancer, via absorbance spectrometry of gold nanoparticle aggregation. Compared to laboratory microtiter plate-based techniques, the system demonstrates equivalent performance while remaining competitive in terms of resource and operation requirements and cost.
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Affiliation(s)
| | | | | | - Bin Pan
- ReoLab Inc., Pasadena, California 91103, USA
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14
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Li Z, Tang C, Huang D, Qin W, Luo F, Wang J, Guo L, Qiu B, Lin Z. Sensitive Hyaluronidase Biosensor Based on Target-Responsive Hydrogel Using Electronic Balance as Readout. Anal Chem 2019; 91:11821-11826. [DOI: 10.1021/acs.analchem.9b02487] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Zhixin Li
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Caixi Tang
- Department of Hepatobiliary & Pancreatic Surgery, Affiliated Zhuzhou Hospital, Xiangya Medial College, CSU, Zhuzhou, Hunan 412007, China
| | - Da Huang
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Wenjuan Qin
- Department of Radiation Oncology, Zhongshan Hospital Affiliated Xiamen University, Xiamen 361001, China
| | - Fang Luo
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Jian Wang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Longhua Guo
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Bin Qiu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Zhenyu Lin
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350116, China
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15
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Qi Y, He J, Xiu FR, Yu X, Li Y, Lu Y, Gao X, Song Z, Li B. A facile chemiluminescence sensing for ultrasensitive detection of heparin using charge effect of positively-charged AuNPs. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 216:310-318. [PMID: 30909087 DOI: 10.1016/j.saa.2019.03.073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/06/2019] [Accepted: 03/18/2019] [Indexed: 06/09/2023]
Abstract
Heparin is a glycosaminoglycan with the highest negative charge density of any known biological molecule. Herein, this highly negative charge structure of heparin and the charge effect from positively-charged AuNPs for luminol chemiluminescence (CL) reaction were combined to build a facile and sensitive CL strategy for detection of heparin. The highly negative charge structure of heparin molecules (four negatively-charged side groups per repeat unit) and the effective signal amplification of charge effect from positively-charged AuNPs make this analysis to display high sensitivity for heparin detection, and the detection limit is as low as 0.06 ng/mL. It is about two orders of magnitude lower than the previously reported colorimetric assay and far lower than the current analysis methods. The established CL strategy is to use the electrostatic interaction between heparin and signal probe (positively-charged AuNPs). Since polyanionic heparin has the highest negative charge in biological system, this CL sensing shows high selectivity for the detection of heparin, and hyaluronic acid (HA), an analogue of heparin, cannot cause interference. This CL sensing succeeded in detecting heparin in human serum samples. Besides, polycationic protamine, heparin antidote, can respond to the system's CL signals through its strong interactions with heparin, thus indirectly detecting protamine. For protamine in serum samples, the detection result was basically consistent with Coomassie brilliant blue assay.
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Affiliation(s)
- Yingying Qi
- Geological Research Institute for Coal Green Mining, College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, PR China.
| | - Jiahuan He
- Geological Research Institute for Coal Green Mining, College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, PR China
| | - Fu-Rong Xiu
- Geological Research Institute for Coal Green Mining, College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, PR China
| | - Xuan Yu
- Geological Research Institute for Coal Green Mining, College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, PR China
| | - Yifan Li
- Geological Research Institute for Coal Green Mining, College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, PR China
| | - Yongwei Lu
- Geological Research Institute for Coal Green Mining, College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, PR China
| | - Xiang Gao
- Geological Research Institute for Coal Green Mining, College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, PR China
| | - Zhiqi Song
- Geological Research Institute for Coal Green Mining, College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, PR China
| | - Baoxin Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, PR China
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16
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Kim H, Park M, Hwang J, Kim JH, Chung DR, Lee KS, Kang M. Development of Label-Free Colorimetric Assay for MERS-CoV Using Gold Nanoparticles. ACS Sens 2019; 4:1306-1312. [PMID: 31062580 PMCID: PMC7119221 DOI: 10.1021/acssensors.9b00175] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 05/07/2019] [Indexed: 12/27/2022]
Abstract
Worldwide outbreaks of infectious diseases necessitate the development of rapid and accurate diagnostic methods. Colorimetric assays are a representative tool to simply identify the target molecules in specimens through color changes of an indicator (e.g., nanosized metallic particle, and dye molecules). The detection method is used to confirm the presence of biomarkers visually and measure absorbance of the colored compounds at a specific wavelength. In this study, we propose a colorimetric assay based on an extended form of double-stranded DNA (dsDNA) self-assembly shielded gold nanoparticles (AuNPs) under positive electrolyte (e.g., 0.1 M MgCl2) for detection of Middle East respiratory syndrome coronavirus (MERS-CoV). This platform is able to verify the existence of viral molecules through a localized surface plasmon resonance (LSPR) shift and color changes of AuNPs in the UV-vis wavelength range. We designed a pair of thiol-modified probes at either the 5' end or 3' end to organize complementary base pairs with upstream of the E protein gene (upE) and open reading frames (ORF) 1a on MERS-CoV. The dsDNA of the target and probes forms a disulfide-induced long self-assembled complex, which protects AuNPs from salt-induced aggregation and transition of optical properties. This colorimetric assay could discriminate down to 1 pmol/μL of 30 bp MERS-CoV and further be adapted for convenient on-site detection of other infectious diseases, especially in resource-limited settings.
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Affiliation(s)
- Hanbi Kim
- Smart Healthcare & Device Research Center and Center for Infection Prevention and
Control, Samsung Medical Center, Seoul, Korea
| | - Minseon Park
- Smart Healthcare & Device Research Center and Center for Infection Prevention and
Control, Samsung Medical Center, Seoul, Korea
- Department
of Medical Device Management and Research, SAIHST (Samsung Advanced
Institute for Health Sciences & Technology), Sungkyunkwan University, Seoul, Korea
| | - Joonki Hwang
- Smart Healthcare & Device Research Center and Center for Infection Prevention and
Control, Samsung Medical Center, Seoul, Korea
| | - Jin Hwa Kim
- Smart Healthcare & Device Research Center and Center for Infection Prevention and
Control, Samsung Medical Center, Seoul, Korea
| | - Doo-Ryeon Chung
- Smart Healthcare & Device Research Center and Center for Infection Prevention and
Control, Samsung Medical Center, Seoul, Korea
- Asia
Pacific Foundation for Infectious Diseases (APFID), Seoul, Korea
- Division
of Infectious Diseases, Department of Internal Medicine and Department of Urology, Samsung Medical Center, Sungkyunkwan University School
of Medicine, Seoul, Korea
| | - Kyu-sung Lee
- Smart Healthcare & Device Research Center and Center for Infection Prevention and
Control, Samsung Medical Center, Seoul, Korea
- Department
of Medical Device Management and Research, SAIHST (Samsung Advanced
Institute for Health Sciences & Technology), Sungkyunkwan University, Seoul, Korea
- Division
of Infectious Diseases, Department of Internal Medicine and Department of Urology, Samsung Medical Center, Sungkyunkwan University School
of Medicine, Seoul, Korea
| | - Minhee Kang
- Smart Healthcare & Device Research Center and Center for Infection Prevention and
Control, Samsung Medical Center, Seoul, Korea
- Department
of Medical Device Management and Research, SAIHST (Samsung Advanced
Institute for Health Sciences & Technology), Sungkyunkwan University, Seoul, Korea
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17
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Velesiotis C, Vasileiou S, Vynios DH. A guide to hyaluronan and related enzymes in breast cancer: biological significance and diagnostic value. FEBS J 2019; 286:3057-3074. [PMID: 31018038 DOI: 10.1111/febs.14860] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 03/07/2019] [Accepted: 04/23/2019] [Indexed: 12/17/2022]
Abstract
Hyaluronan (HA) is a unique nonsulfated glycosaminoglycan that contributes to breast cancer cells growth and functional properties, including cell migration, invasion, adhesion, as well as tumor-associated angiogenesis in different stages of breast cancer progression and especially metastasis. Latest data show that the levels of HA and/or low molecular mass HA in blood serum and plasma of breast cancer patients may be a useful biomarker for breast cancer prognosis, differential diagnosis, and patients' treatment monitoring. Therefore, the qualitative and quantitative determination of HA in biological samples is an emerging area of research. This review gathers, categorizes, and sums up all the currently used methodologies to analyze HA and HA-related enzymes. The advantages, disadvantages, limitations in use, and the information they provide, are critically considered and discussed. Moreover, emphasis is given to the significance of HA determination in breast cancer, as well as of its related enzymes, for diagnosis and prognosis of this type of cancer.
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Affiliation(s)
- Christos Velesiotis
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Department of Chemistry, University of Patras, Greece
| | - Stella Vasileiou
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Department of Chemistry, University of Patras, Greece
| | - Demitrios H Vynios
- Biochemistry, Biochemical Analysis & Matrix Pathobiochemistry Research Group, Department of Chemistry, University of Patras, Greece
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18
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Ma L, Gao W, Han X, Qu F, Xia L, Kong RM. A label-free and fluorescence turn-on assay for sensitive detection of hyaluronidase based on hyaluronan-induced perylene self-assembly. NEW J CHEM 2019. [DOI: 10.1039/c8nj06343e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A label-free and fluorescence turn-on assay for sensitive detection of HAase based on HA–PDI nanoaggregates was reported.
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Affiliation(s)
- Lin Ma
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Wenjuan Gao
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Xue Han
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Fengli Qu
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Lian Xia
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
| | - Rong-Mei Kong
- College of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu Shandong 273165
- P. R. China
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19
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Shawky SM, Awad AM, Abugable AA, El-Khamisy SF. Gold nanoparticles - an optical biosensor for RNA quantification for cancer and neurologic disorders diagnosis. Int J Nanomedicine 2018; 13:8137-8151. [PMID: 30555231 PMCID: PMC6278840 DOI: 10.2147/ijn.s181732] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose The objective of this study is to develop a facile tool for the absolute detection and quantification of nucleic acid transcripts, using a gold nanoparticle-based optical biosensor. Topoisomerase 1 (TOP1) and tyrosyl DNA phosphodiesterase 2 (TDP2) were among the nucleic acid transcripts of choice due to their role as genomic instability biomarkers and their implication in various cancers and neurologic disorders. This opens the door to develop a simple tool that can be used for diagnosing and monitoring treatment response for such diseases, overcoming the requirements for high cost, time, and complexity of the existing technologies for the absolute quantification of transcripts of interest. Materials and methods The TOP1 and TDP2 mRNA transcripts were first captured specifically using magnetic nanoparticles that were functionalized with TOP1- and TDP2-specific probes, respectively. The captured mRNA was then directly detected and quantified using the gold aggregating gold (GAG) assay, without the need for amplification as in existing technologies used for the quantification of transcripts. Results A linear correlation exists between the GAG assay and the qPCR for the quantification of the TOP1 and TDP2 mRNA transcripts (101–104 copies). The detection limit of the GAG assay in mRNA quantification was up to 10 copies per reaction. Wild-type and TDP2-deficient cell lines confirmed the assay specificity and reproducibility in distinguishing between different transcripts. Conclusion The GAG assay can be utilized as an inexpensive, rapid, simple, and sensitive tool for the absolute quantification of RNA for different applications, instead of the laborious, expensive, and sophisticated real-time PCR.
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Affiliation(s)
- Sherif M Shawky
- Center for Genomics, Helmy Institute for Medical Sciences, Zewail City of Science and Technology, Giza, Egypt, .,Krebs Institute, Department of Molecular Biology and Biotechnology, Firth Court, University of Sheffield, Sheffield, UK, .,Biochemistry Department, Faculty of Pharmacy, Misr University for Science and Technology, Giza, Egypt
| | - Ahmed M Awad
- Center for Genomics, Helmy Institute for Medical Sciences, Zewail City of Science and Technology, Giza, Egypt, .,Department of Molecular Biology, Genetic Engineering and Biotechnology Research Institute, University of Sadat City, Sadat City, Egypt
| | - Arwa A Abugable
- Center for Genomics, Helmy Institute for Medical Sciences, Zewail City of Science and Technology, Giza, Egypt, .,Krebs Institute, Department of Molecular Biology and Biotechnology, Firth Court, University of Sheffield, Sheffield, UK,
| | - Sherif F El-Khamisy
- Center for Genomics, Helmy Institute for Medical Sciences, Zewail City of Science and Technology, Giza, Egypt, .,Krebs Institute, Department of Molecular Biology and Biotechnology, Firth Court, University of Sheffield, Sheffield, UK,
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20
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Yang W, Ni J, Luo F, Weng W, Wei Q, Lin Z, Chen G. Cationic Carbon Dots for Modification-Free Detection of Hyaluronidase via an Electrostatic-Controlled Ratiometric Fluorescence Assay. Anal Chem 2017; 89:8384-8390. [PMID: 28730807 DOI: 10.1021/acs.analchem.7b01705] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Carbon dots (CDs) emerge as excellent fluorescent nanomaterials, but the full exploitation and application of their exceptional properties in the development of fluorescence assay are still rare. In this work, cationic carbon dots (C-CDs) covered with plenty of positive charges on the surface were synthesized through a facile ultrasonic method. Negatively charged hyaluronic acid (HA) caused the aggregation of positively charged C-CDs and neutral red (NR) along its linear chain via electrostatic adsorption, leading to a remarkable Förster resonance energy transfer (FRET) from C-CDs to NR. However, the presence of hyaluronidase (HAase) resulted in the enzymolysis of HA, as well as the liberation of C-CDs and NR. The corresponding change of fluorescence color from red to green-yellow afforded a reliable ratiometric assay for HAase. Also the ratio of fluorescence intensity for C-CDs (I525) to that for NR (I630) was used for quantitative detection of HAase. The proposed sensing system was easily operated in aqueous media with a detection limit of 0.05 U/mL. This strategy provides a new approach for the wider application of some special CDs in detecting biomolecules.
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Affiliation(s)
- Weiqiang Yang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, Fujian 350116, China
| | - Jiancong Ni
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, Fujian 350116, China.,Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry and Environment, Minnan Normal University , Zhangzhou, 363000, China
| | - Fang Luo
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, Fujian 350116, China.,College of Biological Science and Engineering, Fuzhou University , Fuzhou, Fujian 350116, China
| | - Wen Weng
- Fujian Provincial Key Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry and Environment, Minnan Normal University , Zhangzhou, 363000, China
| | - Qiaohua Wei
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, Fujian 350116, China
| | - Zhenyu Lin
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, Fujian 350116, China
| | - Guonan Chen
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University , Fuzhou, Fujian 350116, China
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21
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Shawky SM, Awad AM, Allam W, Alkordi MH, El-Khamisy SF. Gold aggregating gold: A novel nanoparticle biosensor approach for the direct quantification of hepatitis C virus RNA in clinical samples. Biosens Bioelectron 2017; 92:349-356. [PMID: 27836599 PMCID: PMC5345390 DOI: 10.1016/j.bios.2016.11.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 10/30/2016] [Accepted: 11/01/2016] [Indexed: 12/14/2022]
Abstract
The affordable and reliable detection of Hepatitis C Virus (HCV) RNA is a cornerstone in the management and control of infection, affecting approximately 3% of the global population. However, the existing technologies are expensive, labor intensive and time consuming, posing significant limitations to their wide-scale exploitation, particularly in economically deprived populations. Here, we utilized the unique optical and physicochemical properties of gold nanoparticles (AuNPs) to develop a novel assay platform shown to be rapid and robust in sensing and quantifying unamplified HCV RNA in clinical samples. The assay is based on inducing aggregation of citrate AuNPs decorated with a specific nucleic acid probe. Two types of cationic AuNPs, cysteamine and CTAB capped, were compared to achieve maximum assay performance. The technology is simple, rapid, cost effective and quantitative with 93.3% sensitivity, high specificity and detection limit of 4.57IU/µl. Finally, our data suggest that RNA folding impact the aggregation behavior of the functionalized AuNPs, with broader applications in other nucleic acid detection technologies.
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Affiliation(s)
- Sherif M Shawky
- Center of Genomics, Helmy institute, Zewail City of Science and Technology, Sheikh Zayed Dist., 12588 Giza, Egypt; Krebs Institute, Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK; Misr University for Science and Technology, Faculty of Pharmacy, Biochemistry Department, Giza, Egypt
| | - Ahmed M Awad
- Center of Genomics, Helmy institute, Zewail City of Science and Technology, Sheikh Zayed Dist., 12588 Giza, Egypt
| | - Walaa Allam
- Center of Genomics, Helmy institute, Zewail City of Science and Technology, Sheikh Zayed Dist., 12588 Giza, Egypt
| | - Mohamed H Alkordi
- Center for Materials Science, Zewail City of Science and Technology, Sheikh Zayed Dist., 12588 Giza, Egypt
| | - Sherif F El-Khamisy
- Center of Genomics, Helmy institute, Zewail City of Science and Technology, Sheikh Zayed Dist., 12588 Giza, Egypt; Krebs Institute, Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK.
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22
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Shiraishi Y, Tanaka H, Sakamoto H, Ichikawa S, Hirai T. Photoreductive synthesis of monodispersed Au nanoparticles with citric acid as reductant and surface stabilizing reagent. RSC Adv 2017. [DOI: 10.1039/c6ra27771c] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
UV irradiation of water containing HAuCl4 and citric acid at room temperature successfully produces monodispersed Au nanoparticles. The size of Au particles is easily tuned by the intensity of UV light and the amount of citric acid.
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Affiliation(s)
- Yasuhiro Shiraishi
- Research Center for Solar Energy Chemistry and Division of Chemical Engineering
- Graduate School of Engineering Science
- Osaka University
- Toyonaka 560-8531
- Japan
| | - Haruki Tanaka
- Research Center for Solar Energy Chemistry and Division of Chemical Engineering
- Graduate School of Engineering Science
- Osaka University
- Toyonaka 560-8531
- Japan
| | - Hirokatsu Sakamoto
- Research Center for Solar Energy Chemistry and Division of Chemical Engineering
- Graduate School of Engineering Science
- Osaka University
- Toyonaka 560-8531
- Japan
| | - Satoshi Ichikawa
- Institute for NanoScience Design
- Osaka University
- Toyonaka 560-8531
- Japan
| | - Takayuki Hirai
- Research Center for Solar Energy Chemistry and Division of Chemical Engineering
- Graduate School of Engineering Science
- Osaka University
- Toyonaka 560-8531
- Japan
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23
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Qi Y, Xiu FR, Yu G, Huang L, Li B. Simple and rapid chemiluminescence aptasensor for Hg 2+ in contaminated samples: A new signal amplification mechanism. Biosens Bioelectron 2016; 87:439-446. [PMID: 27591718 DOI: 10.1016/j.bios.2016.08.022] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Revised: 08/06/2016] [Accepted: 08/08/2016] [Indexed: 11/16/2022]
Abstract
Detection of ultralow concentration of heavy metal ion Hg2+ is important for human health protection and environment monitoring because of the gradual accumulation in environmental and biological fields. Herein, we report a convenient chemiluminescence (CL) biosensing platform for ultrasensitive Hg2+ detection by signal amplification mechanism from positively charged gold nanoparticles ((+)AuNPs). It is based on (+)AuNPs charge effect and aptamer conformation change induced by target to stimulate the generation of CL in the presence of H2O2 and luminol without high salt medium. Notably particularly, the typical problem of the high salt medium from (-) AuNPs system, like influencing aptamers' bind with target and hindering CL reaction can be effectively addressed through the direct introduction of (+)AuNPs. Therefore, the proposed biosensing exhibits a high sensitivity toward target Hg2+ with a detection limit of 16 pM, which is far below the limit (10nM) defined by the U.S. Environmental Protection Agency in drinkable water, and is about 10-fold lower than the previously reported aptamer-based assays for Hg2+. This sensing platform provides a simple, rapid, and cost-effective approach for label-free sensitive detection of Hg2+. Moreover, it is universal for the detection of other targets. Undoubtedly, such a direct utilizing of (+)AuNPs' charge effect will provide a new signal amplification way for label-free aptamer-based CL analysis.
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Affiliation(s)
- Yingying Qi
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350108 PR China.
| | - Fu-Rong Xiu
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350108 PR China
| | - Gending Yu
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350108 PR China
| | - Lili Huang
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, 350108 PR China
| | - Baoxin Li
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062 PR China
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24
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Gu W, Yan Y, Zhang C, Ding C, Xian Y. One-Step Synthesis of Water-Soluble MoS2 Quantum Dots via a Hydrothermal Method as a Fluorescent Probe for Hyaluronidase Detection. ACS APPLIED MATERIALS & INTERFACES 2016; 8:11272-9. [PMID: 27082278 DOI: 10.1021/acsami.6b01166] [Citation(s) in RCA: 134] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
In this work, a bottom-up strategy is developed to synthesize water-soluble molybdenum disulfide quantum dots (MoS2 QDs) through a simple, one-step hydrothermal method using ammonium tetrathiomolybdate [(NH4)2MoS4] as the precursor and hydrazine hydrate as the reducing agent. The as-synthesized MoS2 QDs are few-layered with a narrow size distribution, and the average diameter is about 2.8 nm. The resultant QDs show excitation-dependent blue fluorescence due to the polydispersity of the QDs. Moreover, the fluorescence can be quenched by hyaluronic acid (HA)-functionalized gold nanoparticles through a photoinduced electron-transfer mechanism. Hyaluronidase (HAase), an endoglucosidase, can cleave HA into proangiogenic fragments and lead to the aggregation of gold nanoparticles. As a result, the electron transfer is blocked and fluorescence is recovered. On the basis of this principle, a novel fluorescence sensor for HAase is developed with a linear range from 1 to 50 U/mL and a detection limit of 0.7 U/mL.
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Affiliation(s)
- Wei Gu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchan Road, Shanghai 200241, China
| | - Yinghan Yan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchan Road, Shanghai 200241, China
| | - Cuiling Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchan Road, Shanghai 200241, China
| | - Caiping Ding
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchan Road, Shanghai 200241, China
| | - Yuezhong Xian
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, School of Chemistry and Molecular Engineering, East China Normal University , 500 Dongchan Road, Shanghai 200241, China
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25
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Ramalingam V, Revathidevi S, Shanmuganayagam T, Muthulakshmi L, Rajaram R. Biogenic gold nanoparticles induce cell cycle arrest through oxidative stress and sensitize mitochondrial membranes in A549 lung cancer cells. RSC Adv 2016. [DOI: 10.1039/c5ra26781a] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Schematic representation of biogenic synthesized AuNPs have been proven to have excellent anticancer activity against A549 human lung cancer cells.
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Affiliation(s)
- V. Ramalingam
- DNA Barcoding and Marine Genomics Laboratory
- Department of Marine Science
- School of Marine Sciences
- Bharathidasan University
- Tiruchirappalli – 620 024
| | - S. Revathidevi
- Department of Genetics
- Institute of Basic Medical Sciences
- Madras University
- Chennai – 600 113
- India
| | | | | | - R. Rajaram
- DNA Barcoding and Marine Genomics Laboratory
- Department of Marine Science
- School of Marine Sciences
- Bharathidasan University
- Tiruchirappalli – 620 024
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26
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Huang Y, Song C, Li H, Zhang R, Jiang R, Liu X, Zhang G, Fan Q, Wang L, Huang W. Cationic Conjugated Polymer/Hyaluronan-Doxorubicin Complex for Sensitive Fluorescence Detection of Hyaluronidase and Tumor-Targeting Drug Delivery and Imaging. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21529-21537. [PMID: 26331442 DOI: 10.1021/acsami.5b06799] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Hyaluronidase (HAase) is becoming a new type of tumor marker since it has been demonstrated to be overexpressed in various kinds of cancer cells. In this study, we described a novel fluorescence method for sensitive, rapid, and convenient HAase detection and tumor-targeting drug delivery and imaging, using a probe prepared by electrostatic assembly of a cationic conjugated polymer (CCP) and anionic hyaluronan (HA) conjugated with the anticancer drug doxorubicin (Dox). The CCP we used was poly{[9,9-bis(6'-(N,N,N-diethylmethylammonium)hexyl)-2,7-fluorenylene ethynylene]-alt-co-[2,5-bis(3'-(N,N,N-diethylmethylammonium)-1'-oxapropyl)-1,4-phenylene]} tetraiodide (PFEP). HA is a natural mucopolysaccharide that can be hydrolyzed by HAase into fragments with low molecular weights. In the PFEP/HA-Dox complex, the fluorescence of PFEP was efficiently quenched due to electron transfer from PFEP to Dox. After the PFEP/HA-Dox complex was exposed to HAase or was taken up by cancer cells through the specific binding between HA and CD44 receptor, HA was degraded by HAase to release the Dox, leading to the recovery of PFEP fluorescence to the "turn-on" state. Moreover, the degree of fluorescence recovery was quantitatively correlated with the concentrations of HAase. Compared with many previously reported methods, our work did not require laborious multiple modifications of HA that may affect the activity of HAase. This point, combined with the excellent optoelectronic property of conjugated polymer, endowed this method with high sensitivity (detection limit: 0.075 U/mL), high specificity, and rapid response, making it applicable for reliable and routine detection of HAase. This fluorescent probe was successfully utilized to detect HAase levels in human urine samples; furthermore, it can also be employed as a multifunctional system by realizing tumor-targeting drug delivery and cell imaging simultaneously. The development of this fluorescence method showed promising potential for early tumor diagnosis and therapy based on HAase detection.
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Affiliation(s)
- Yanqin Huang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Caixia Song
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Huichang Li
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Rui Zhang
- Department of Ophthalmology, Zhongda Hospital, Southeast University , Nanjing 211189, China
| | - Rongcui Jiang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Xingfen Liu
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Guangwei Zhang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Quli Fan
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Lianhui Wang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
| | - Wei Huang
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications , Nanjing 210023, China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech) , 30 South Puzhu Road, Nanjing 211816, China
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Kuroki H, Islam C, Tokarev I, Hu H, Liu G, Minko S. Tunable ultrathin membranes with nonvolatile pore shape memory. ACS APPLIED MATERIALS & INTERFACES 2015; 7:10401-10406. [PMID: 25912512 DOI: 10.1021/acsami.5b01416] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The concept of a responsive nanoporous thin-film gel membranes whose pores could be tuned to a desired size by a specific "molecular signal" and whose pore geometry becomes "memorized" by the gel is reported. The ∼100 nm thick membranes were prepared by dip-coating from a solution mixture of a random copolymer comprising responsive and photo-cross-linkable units and monodisperse latex nanoparticles used as a sacrificial colloidal template. After stabilization of the films by photo-cross-linking the latex template was removed, yielding nanoporous structures with a narrow pore size distribution and a high porosity. The thin-film membranes could be transferred onto porous supports to serve as tunable size-selective barriers in various colloids separation applications. The pore dimensions and hence the membrane's colloidal-particle-size cutoff were reversibly regulated by swelling-shrinking of the polymer network with a specially selected low-molar-mass compound. The attained pore shape was "memorized" in aqueous media and "erased" by treatment in special solvents reverting the membrane to the original state.
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Affiliation(s)
- Hidenori Kuroki
- †Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Crescent Islam
- †Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Igor Tokarev
- †Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
| | - Heng Hu
- §Department of Chemistry, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Guojun Liu
- §Department of Chemistry, Queen's University, Kingston, Ontario K7L 3N6, Canada
| | - Sergiy Minko
- †Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York 13699, United States
- ‡Nanostructured Materials Lab, University of Georgia, Athens, Georgia 30602, United States
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One-step facile synthesis of hyaluronic acid functionalized fluorescent gold nanoprobes sensitive to hyaluronidase in urine specimen from bladder cancer patients. Talanta 2014; 130:408-14. [DOI: 10.1016/j.talanta.2014.07.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Revised: 06/28/2014] [Accepted: 07/02/2014] [Indexed: 11/20/2022]
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Ren S, Li B, Zhang L. Visual detection of hexokinase activity and inhibition with positively charged gold nanoparticles as colorimetric probes. Analyst 2013; 138:3142-5. [PMID: 23595107 DOI: 10.1039/c3an36528j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Positively charged gold nanoparticles can effectively differentiate ATP and ADP, thus providing a simple and visual approach to colorimetric detection of hexokinase activity and inhibition.
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Affiliation(s)
- Shan Ren
- 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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Nossier AI, Eissa S, Ismail MF, Hamdy MA, Azzazy HMES. Direct detection of hyaluronidase in urine using cationic gold nanoparticles: a potential diagnostic test for bladder cancer. Biosens Bioelectron 2013; 54:7-14. [PMID: 24240162 DOI: 10.1016/j.bios.2013.10.024] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 10/10/2013] [Accepted: 10/11/2013] [Indexed: 12/29/2022]
Abstract
Hyaluronidase (HAase) was reported as a urinary marker of bladder cancer. In this study, a simple colorimetric gold nanoparticle (AuNP) assay was developed for rapid and sensitive detection of urinary HAase activity. Charge interaction between polyanionic hyaluronic acid (HA) and cationic AuNPs stabilized with cetyl trimethyl ammonium bromide (CTAB) led to formation of gold aggregates and a red to blue color shift. HAase digests HA into small fragments preventing the aggregation of cationic AuNPs. The nonspecific aggregation of AuNPs in urine samples was overcome by pre-treatment of samples with the polycationic chitosan that was able to agglomerate all negatively charged interfering moieties before performing the assay. The developed AuNP assay was compared with zymography for qualitative detection of urinary HAase activity in 40 bladder carcinoma patients, 11 benign bladder lesions patients and 15 normal individuals, the assay sensitivity was 82.5% vs. 65% for zymography, while the specificity for both assays was 96.1%. The absorption ratio, A530/A620 of the reacted AuNP solution was used to quantify the HAase activity. The best cut off value was 93.5 μU/ng protein, at which the sensitivity was 90% and the specificity was 80.8%.The developed colorimetric AuNP HAase assay is simple, inexpensive, and can aid noninvasive diagnosis of bladder cancer.
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Affiliation(s)
- Ahmed Ibrahim Nossier
- Biochemistry Department, Faculty of Pharmacy, Misr University for Science and Technology (MUST), 6th October City, Egypt
| | - Sanaa Eissa
- Oncology Diagnostic Unit, Medical Biochemistry & Molecular Biology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Manal Fouad Ismail
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Giza, Egypt
| | | | - Hassan Mohamed El-Said Azzazy
- Department of Chemistry & Yousef Jameel Science & Technology Research Center, The American University in Cairo, New Cairo, Egypt.
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X-ray photoelectron spectroscopy characterization of gold nanoparticles functionalized with amine-terminated alkanethiols. Biointerphases 2012; 6:98. [PMID: 21974680 DOI: 10.1116/1.3622481] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Gold nanoparticles (AuNPs) functionalized with a short chain amine-terminated alkanethiol (HS-(CH(2))(2)NH(2) or C2 NH(2)-thiol) are prepared via a direct synthesis method and then ligand-exchanged with a long chain amine-terminated alkanethiol (HS-(CH(2))(11)NH(2) or C11 NH(2)-thiol). Transmission electron microscopy analysis showed the AuNPs were relatively spherical with a median diameter of 24.2 ± 4.3 nm. X-ray photoelectron spectroscopy was used to determine surface chemistry of the functionalized and purified AuNPs. The ligand-exchange process was monitored within the time range from 30 min to 61 days. By the fourth day of exchange all the C2 NH(2)-thiol molecules had been replaced by C11 NH(2)-thiol molecules. C11 NH(2)-thiol molecules continued to be incorporated into the C11 NH(2) self-assembled monolayer between days 4 and 14 of ligand-exchange. As the length of the exchange time increased, the functionalized AuNPs became more stable against aggregation. The samples were purified by a centrifugation and resuspension method. The C2 NH(2) covered AuNPs aggregated immediately when purification was attempted. The C11 NH(2) covered AuNPs could be purified with minimal or no aggregation. Small amounts of unbound thiol (∼15%) and oxidized sulfur (∼20%) species were detected on the ligand-exchanged AuNPs. Some of the unbound thiol and all of the oxidized sulfur could be removed by treating the functionalized AuNPs with HCl.
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Li C, Hu J, Liu T, Liu S. Stimuli-Triggered Off/On Switchable Complexation between a Novel Type of Charge-Generation Polymer (CGP) and Gold Nanoparticles for the Sensitive Colorimetric Detection of Hydrogen Peroxide and Glucose. Macromolecules 2011. [DOI: 10.1021/ma102608a] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Changhua Li
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jinming Hu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Tao Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shiyong Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China
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Zhang J, Wang Y, Xu X, Yang X. Specifically colorimetric recognition of calcium, strontium, and barium ions using 2-mercaptosuccinic acid-functionalized gold nanoparticles and its use in reliable detection of calcium ion in water. Analyst 2011; 136:3865-8. [DOI: 10.1039/c1an15175d] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zhang M, Liu YQ, Ye BC. Colorimetric assay for sulfate using positively-charged gold nanoparticles and its application for real-time monitoring of redox process. Analyst 2011; 136:4558-62. [DOI: 10.1039/c1an15632b] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Cao R, Li B. A simple and sensitive method for visual detection of heparin using positively-charged gold nanoparticles as colorimetric probes. Chem Commun (Camb) 2011; 47:2865-7. [DOI: 10.1039/c0cc05094f] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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