1
|
Geng W, Xue L, Li Y, Ji J, Yuan X, Ding L, Yang R. A dual-model immobilization-free photoelectrochemical/visual colorimetric bioanalysis based on microemulsion self-assemblies mediated multifunctional signal amplification strategy. Anal Chim Acta 2023; 1277:341644. [PMID: 37604608 DOI: 10.1016/j.aca.2023.341644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 07/19/2023] [Indexed: 08/23/2023]
Abstract
Herein, a novel silver ion-loaded gold microemulsion assemblies (Au/Ag+ MAs) mediated multifunctional signal amplification strategy was proposed to construct a sensitive immobilization-free photoelectrochemical (PEC)/colorimetric biosensor for carcinoembryonic antigen (CEA) detection. Through the sandwiched reaction among CEA, the CEA aptamer (DNA1) loaded on the Au nanoparticles (NPs) functionalized iron oxide (Fe3O4) nanospheres and another CEA aptamer (DNA2) immobilized on Au/Ag+ MAs, a complex is formed and acquired by magnetic separation. Then, Au/Ag+ MAs of the complex are disassembled into Au NPs and Ag+ ions driven by an acetone response, and the obtained demulsification solution is transferred to the cadmium sulfide/cadmium telluride (CdS/CdTe) photoactive composites modified electrode. Based on the multiple inhibition functions (blocking effect of oleylamine; energy transfer effect of Au NPs; and electron snatching effect of Ag+), the photocurrent of the electrode decreases obviously, resulting in the ultrasensitive detection of CEA (a detection limit of 16 fg mL-1). Interestingly, the ion-exchange reactions between CdS/CdTe composites and Ag+ ions generate silver sulfide/silver telluride (Ag2S/Ag2Te) composites, and a color change of composites can be distinguished directly, leading to a quick visual detection of CEA. Compared with the traditional single-modal assay for CEA, such dual-modal PEC/colorimetric assay is a more accurate and reliable due to different mechanisms and independent signal conversion. This work will offer a new perspective for the applications of various self-assemblies in PEC bioanalysis.
Collapse
Affiliation(s)
- Wenchao Geng
- School of Chemical and Printing Dyeing Engineering, Henan University of Engineering, Zhengzhou, 451191, China
| | - Linsheng Xue
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Yuling Li
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Jiangying Ji
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Xinxin Yuan
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Lihua Ding
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China
| | - Ruiying Yang
- College of Public Health, Zhengzhou University, Zhengzhou, 450001, China.
| |
Collapse
|
2
|
Chen B, Li L, Yang Q, Zhang M. Self-corrected dual-optical immunosensors using carbon dots@SiO 2@MnO 2 improving diethyl phthalate detection accuracy. Talanta 2023; 261:124652. [PMID: 37207508 DOI: 10.1016/j.talanta.2023.124652] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/11/2023] [Accepted: 05/04/2023] [Indexed: 05/21/2023]
Abstract
The traditional immunoassay is widely used for pollutant detection and bioanalysis, but there are still some challenges in ensuring its sensitivity and reliable accuracy. Dual-optical measurement can prove mutual evidence to effectively improve the accuracy of the method by self-correction, which will overcome this problem. In this study, we developed a "visualization and sensing" dual-modal immunoassay based on blue carbon dots@SiO2@MnO2 (B-CDs@SiO2@MnO2) as "color and fluorescence" immunosensors. Here, MnO2 nanosheets have the activity of simulating oxidase. 3,3', 5,5'-Tetramethylbenzidine (TMB) can be oxidized to TMB2+ under acidic conditions and the color of the solution from colorless to yellow. On the other hand, the MnO2 nanosheets can quench the fluorescence of B-CDs@SiO2. After adding ascorbic acid (AA), MnO2 nanosheets were reduced to Mn2+, thereby the fluorescence of B-CDs@SiO2 was restored. Under the optimum conditions, as the concentration of target substance (diethyl phthalate) increased from 0.05 to 100 ng/mL, the method showed a good linear relationship. The fluorescence measurement signal and the color change signal of the solution visualization support each other and give the information of the corresponding material content. The results of the dual-optical immunoassay maintain good consistency, which proves the accuracy of the developed dual-optical immunoassay for detection of diethyl phthalate is reliable. Additionally, it is demonstrated that the dual-modal method exhibits high accuracy and stability in the assays, pointing to a broad range of application prospects in pollutant analysis.
Collapse
Affiliation(s)
- Biru Chen
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Key Laboratory of Chemo Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, Anhui, China; School of Life Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Lei Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Key Laboratory of Chemo Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, Anhui, China
| | - Qianqian Yang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Key Laboratory of Chemo Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, Anhui, China
| | - Mingcui Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Key Laboratory of Chemo Biosensing, College of Chemistry and Materials Science, Anhui Normal University, Wuhu, 241002, Anhui, China.
| |
Collapse
|
3
|
Li Y, Tang L, Zhu C, Liu X, Wang X, Liu Y. Fluorescent and colorimetric assay for determination of Cu(II) and Hg(II) using AuNPs reduced and wrapped by carbon dots. Mikrochim Acta 2021; 189:10. [PMID: 34865194 DOI: 10.1007/s00604-021-05111-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 11/14/2021] [Indexed: 12/16/2022]
Abstract
To improve the accuracy and specificity of visual sensors for detecting Cu(II) and Hg(II), a fluorescent and colorimetric dual-modal sensor based on Au nanoparticles (AuNPs) prepared by using carbon dots (CDs) was designed. If a sensor is to be applied for the detection of targets in different environmental backgrounds, it needs to have high stability against heat, pH, and salt. To this end, CD-wrapped AuNP probes were fabricated by the in situ reaction of chloroauric acid and reductive CDs. The reductive CDs were prepared with hyperbranched polyethyleneimine (HPEI) as a carbon source. HPEI-CDs not only acted as a reducing agent but also as an excellent stabilizer in the preparation and detection application of the AuNPs. Based on multiple signal responses, including color, UV-Vis absorption, and fluorescence intensity, the HPEI-CD/AuNP nanosensor was used to realize the detection of Cu2+ and Hg2+ in the linear range 9.0×10-10-9.0×10-4 M and 9.0×10-7-9.0×10-5 M with low detection limits of 75.6 nM and 281 nM, respectively. In tap water analysis, the recovery of Cu2+ and Hg2+ by fluorescent range from 109.98-113.31% and 100.65-100.81%, and the RSD values were 0.1159-1.6317% and 3.2-5.4%, respectively. The recovery of Cu2+ and Hg2+ by colorimetric detection were 99.72-100.14% and 99.88-100.12%, and RSD values were 0.6527-0.6842% and 0.4400-0.8386%, respectively. Importantly, this sensor was applied to the accurate and sensitive detection of Cu2+ and Hg2+ in tap water and sea water. The multimode readout nanosensor exhibited strong potential for achieving simultaneous detection of two different heavy metal ions in practical applications. The novel multi-mode readout carbon dots/AuNPs sensor for Cu2+ and Hg2+ detectionshowed high sensitivity and selectivity.
Collapse
Affiliation(s)
- Yuxi Li
- School of Chemistry and Materials Science, Ludong University, 264025, Yantai, Shandong Province, People's Republic of China
| | - Lu Tang
- School of Chemistry and Materials Science, Ludong University, 264025, Yantai, Shandong Province, People's Republic of China
| | - Chenxue Zhu
- School of Chemistry and Materials Science, Ludong University, 264025, Yantai, Shandong Province, People's Republic of China
| | - Xunyong Liu
- School of Chemistry and Materials Science, Ludong University, 264025, Yantai, Shandong Province, People's Republic of China.
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, People's Republic of China. .,University of Chinese Academy of Sciences, Beijing, 100190, China.
| | - Yi Liu
- School of Chemistry and Materials Science, Ludong University, 264025, Yantai, Shandong Province, People's Republic of China.
| |
Collapse
|
4
|
Harmsen S, Medine EI, Moroz M, Nurili F, Lobo J, Dong Y, Turkekul M, Pillarsetty NVK, Ting R, Ponomarev V, Akin O, Aras O. A dual-modal PET/near infrared fluorescent nanotag for long-term immune cell tracking. Biomaterials 2020; 269:120630. [PMID: 33395580 DOI: 10.1016/j.biomaterials.2020.120630] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 11/30/2020] [Accepted: 12/19/2020] [Indexed: 02/06/2023]
Abstract
Adoptive cell transfer of targeted chimeric antigen receptor (CAR) T cells has emerged as a highly promising cancer therapy. The pharmacodynamic action or CAR T cells is closely related to their pharmacokinetic profile; because of this as well as the risk of non-specific action, it is important to monitor their biodistribution and fate following infusion. To this end, we developed a dual-modal PET/near infrared fluorescent (NIRF) nanoparticle-based imaging agent for non-genomic labeling of human CAR T cells. Since the PET/NIRF nanoparticles did not affect cell viability or cytotoxic functionality and enabled long-term whole-body CAR T cell tracking using PET and NIRF in an ovarian peritoneal carcinomatosis model, this platform is a viable imaging technology to be applied in other cancer models.
Collapse
Affiliation(s)
- Stefan Harmsen
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States; Department of Pediatrics, Stanford University, Stanford, CA, 94305, United States
| | - Emin Ilker Medine
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States
| | - Maxim Moroz
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States
| | - Fuad Nurili
- Molecular Imaging Innovations Institute (MI3), Department of Radiology, Weill Cornell Medical College, New York, NY, 10065, United States
| | - Jose Lobo
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States
| | - Yiyu Dong
- Human Oncology and Pathogenesis Program (HOPP), Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States
| | - Mezruh Turkekul
- Molecular Cytology Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States
| | | | - Richard Ting
- Molecular Imaging Innovations Institute (MI3), Department of Radiology, Weill Cornell Medical College, New York, NY, 10065, United States
| | - Vladimir Ponomarev
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States; Molecular Pharmacology and Chemistry Program, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States
| | - Oguz Akin
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States
| | - Omer Aras
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, NY, 10065, United States.
| |
Collapse
|
5
|
Cui X, Belo S, Krüger D, Yan Y, de Rosales RTM, Jauregui-Osoro M, Ye H, Su S, Mathe D, Kovács N, Horváth I, Semjeni M, Sunassee K, Szigeti K, Green MA, Blower PJ. Aluminium hydroxide stabilised MnFe2O4 and Fe3O4 nanoparticles as dual-modality contrasts agent for MRI and PET imaging. Biomaterials 2014; 35:5840-6. [PMID: 24768194 PMCID: PMC4026944 DOI: 10.1016/j.biomaterials.2014.04.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 04/01/2014] [Indexed: 12/02/2022]
Abstract
Magnetic nanoparticles (NPs) MnFe2O4 and Fe3O4 were stabilised by depositing an Al(OH)3 layer via a hydrolysis process. The particles displayed excellent colloidal stability in water and a high affinity to [(18)F]-fluoride and bisphosphonate groups. A high radiolabeling efficiency, 97% for (18)F-fluoride and 100% for (64)Cu-bisphosphonate conjugate, was achieved by simply incubating NPs with radioactivity solution at room temperature for 5 min. The properties of particles were strongly dependant on the thickness and hardness of the Al(OH)3 layer which could in turn be controlled by the hydrolysis method. The application of these Al(OH)3 coated magnetic NPs in molecular imaging has been further explored. The results demonstrated that these NPs are potential candidates as dual modal probes for MR and PET. In vivo PET imaging showed a slow release of (18)F from NPs, but no sign of efflux of (64)Cu.
Collapse
Affiliation(s)
- Xianjin Cui
- King's College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK
| | - Salome Belo
- King's College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK
| | - Dirk Krüger
- King's College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK
| | - Yong Yan
- School of Chemistry, Nottingham University, Nottingham NG7 2RD, UK
| | - Rafael T M de Rosales
- King's College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK
| | - Maite Jauregui-Osoro
- King's College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK
| | - Haitao Ye
- School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, UK
| | - Shi Su
- School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, UK
| | - Domokos Mathe
- CROmed Ltd., Baross u. 91-95, Budapest H-1047, Hungary
| | - Noémi Kovács
- CROmed Ltd., Baross u. 91-95, Budapest H-1047, Hungary
| | | | | | - Kavitha Sunassee
- King's College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK
| | - Krisztian Szigeti
- Department of Biophysics and Radiation Biology, Nanobiotechnology & In Vivo Imaging Center, Semmelweis University, IX. Tűzoltó u. 37-47, Budapest H-1094, Hungary
| | - Mark A Green
- King's College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK; King's College London, Department of Physics, Strand Campus, London WC2R 2LS, UK.
| | - Philip J Blower
- King's College London, Division of Imaging Sciences and Biomedical Engineering, 4th Floor Lambeth Wing, St Thomas' Hospital, London SE1 7EH, UK; King's College London, Division of Chemistry, Britannia House, 7 Trinity St, London SE1 1DB, UK.
| |
Collapse
|