1
|
Zeng Z, Zhao Y, Yang L, Xi F, Su D. Vertically ordered mesoporous silica film-assisted electrochemical cytosensor for the sensitive detection of HeLa cells. Front Chem 2023; 11:1222067. [PMID: 37727833 PMCID: PMC10506308 DOI: 10.3389/fchem.2023.1222067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 08/16/2023] [Indexed: 09/21/2023] Open
Abstract
Designing fast and simple quantitative methods on cheap and disposable electrodes for the early detection of HeLa cells is highly desirable for clinical diagnostics and public health. In this work, we developed a label-free and sensitive electrochemical cytosensor for HeLa cell detection based on the gated molecular transport across vertically ordered mesoporous silica films (VMSFs) on the disposable indium tin oxide (ITO) electrode. As high affinity for a folate receptor existed on the membrane of HeLa cancer cells, folic acid (FA) functionalized VMSF could regulate the transport of electrochemical probe (Fe(CN)6 3-) by the specific recognition and adhesion of HeLa cells toward the VMSF surface. In addition, VMSF, served as a solid skeleton, is able to effectively prevent the direct contact of cells with the underlying electrode, remaining the underlying electrode activity and favoring the diffusion of Fe(CN)6 3-. Once specific adhesion of HeLa cells to the VMSF surface happens, Fe(CN)6 3- redox probe exhibits impeded transport in the silica nanochannels, ultimately resulting in the decreased electrochemical responses and realizing the quantitative determination of HeLa cells with a broad linear range (101-105 cells/mL) and a low limit of detection (4 cells/mL). The proposed electrochemical cytosensor shows a great potential application for the early diagnosis of cervical cancer.
Collapse
Affiliation(s)
- Zisan Zeng
- Guangxi Medical University Cancer Hospital, Guangxi Medical University, Nanning, China
| | - Yang Zhao
- Guangxi Medical University Cancer Hospital, Guangxi Medical University, Nanning, China
| | - Luoxing Yang
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China
| | - Fengna Xi
- Department of Chemistry, Key Laboratory of Surface and Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou, China
| | - Danke Su
- Guangxi Medical University Cancer Hospital, Guangxi Medical University, Nanning, China
| |
Collapse
|
2
|
Wang Y, Xiong Y, Song L, He S, Yao F, Wu Y, Shi K, He L. Spatial Control of Receptor Dimerization Using Programmable DNA Nanobridge. Biomacromolecules 2023. [PMID: 37319440 DOI: 10.1021/acs.biomac.3c00283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Receptor dimerization is an essential mechanism for the activation of most receptor tyrosine kinases by ligands. Thus, regulating the nanoscale spatial distribution of cell surface receptors is significant for studying both intracellular signaling pathways and cellular behavior. However, there are currently very limited methods for exploring the effects of modulating the spatial distribution of receptors on their function by using simple tools. Herein, we developed an aptamer-based double-stranded DNA bridge acting as "DNA nanobridge", which regulates receptor dimerization by changing the number of bases. On this basis, we confirmed that the different nanoscale arrangements of the receptor can influence receptor function and its downstream signals. Among them, the effect gradually changed from helping to activate to inhibiting as the length of DNA nanobridge increased. Hence, it can not only effectively inhibit receptor function and thus affect cellular behavior but also serve as a fine-tuning tool to get the desired signal activity. Our strategy is promising to provide insight into the action of receptors in cell biology from the perspective of spatial distribution.
Collapse
Affiliation(s)
- Ya Wang
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yamin Xiong
- School of Life Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - Lulu Song
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Sitian He
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Feng Yao
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Yongjun Wu
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Kangqi Shi
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Leiliang He
- College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| |
Collapse
|
3
|
Zhang Y, Zhu M, Zhu J, Xu F, Chen Y. Nanoproteomics deciphers the prognostic value of EGFR family proteins-based liquid biopsy. Anal Biochem 2023; 671:115133. [PMID: 37011758 DOI: 10.1016/j.ab.2023.115133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 03/23/2023] [Accepted: 03/23/2023] [Indexed: 04/04/2023]
Abstract
Monitoring tumor-associated protein status in serum can effectively track tumors and avoid time-consuming, costly, and invasive tissue biopsy. Epidermal growth factor receptor (EGFR) family proteins are often recommended in the clinical management of multiple solid tumors. However, the low-abundance of serum EGFR (sEGFR) family proteins hinders the depth-understanding of their function and tumor management. Herein, a nanoproteomics approach coupling with aptamer-modified MOFs (NMOFs-Apt) with mass spectrometry was developed for the enrichment and quantitative analysis of sEGFR family proteins. This nanoproteomics approach exhibited high sensitivity and specificity for sEGFR family protein quantification, with the limit of quantification as low as 1.00 nM. After detecting 626 patients' sEGFR family proteins with various malignant tumors, we concluded that the levels of serum proteins had a moderate concordance with tissue counterparts. Metastatic breast cancer patients with a high level of serum human epidermal growth factor receptor 2 (sHER2) and a low level of sEGFR had a poor prognosis, and patients with a sHER2 decrease of more than 20% had longer disease-free time after receiving chemotherapy. This nanoproteomics method provided a simple and effective approach for low-abundant serum protein detection and our results clarified the potential of sHER2 and sEGFR as cancer markers.
Collapse
Affiliation(s)
- Yuanyuan Zhang
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Mingchen Zhu
- Department of Clinical Laboratory, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, Nanjing Medical University Affiliated Cancer Hospital, Nanjing, 210009, China
| | - Jianhua Zhu
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Feifei Xu
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Yun Chen
- School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China; State Key Laboratory of Reproductive Medicine, 210029, China; Key Laboratory of Cardiovascular & Cerebrovascular Medicine, Nanjing, 210029, China.
| |
Collapse
|
4
|
A SERS/fluorescence dual-mode immuno-nanoprobe for investigating two anti-diabetic drugs on EGFR expressions. Mikrochim Acta 2023; 190:124. [PMID: 36894729 DOI: 10.1007/s00604-023-05705-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 02/11/2023] [Indexed: 03/11/2023]
Abstract
A surface-enhanced Raman scattering (SERS)/fluorescence dual-mode nanoprobe was proposed to assess anti-diabetic drug actions from the expression level of the epidermal growth factor receptor (EGFR), which is a significant biomarker of breast cancers. The nanoprobe has a raspberry shape, prepared by coating a dye-doped silica nanosphere with a mass of SERS tags, which gives high gains in fluorescence imaging and SERS measurement. The in situ detection of EGFR on the cell membrane surfaces after drug actions was achieved by using this nanoprobe, and the detection results agree with the enzyme-linked immunosorbent assay (ELISA) kit. Our study suggests that rosiglitazone hydrochloride (RH) may be a potential drug for diabetic patients with breast cancer, while the anti-cancer effect of metformin hydrochloride (MH) is debatable since MH slightly promotes the EGFR expression of MCF-7 cells in this study. This sensing platform endows more feasibility for highly sensitive and accurate feedback of pesticide effects at the membrane protein level.
Collapse
|
5
|
Wang LX, Wang ZH, Sun XL, Zi CT, Wang XJ, Sheng J. Discovery of EGFR-Targeted Environment-Sensitive Fluorescent Probes for Cell Imaging and Efficient Tumor Detection. Bioorg Chem 2022; 121:105585. [DOI: 10.1016/j.bioorg.2021.105585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/30/2021] [Accepted: 12/22/2021] [Indexed: 12/01/2022]
|
6
|
Mao D, Chen T, Liu X, Ren L, Feng C, Chen G. A proximity-exponential hybridization chain reaction (PEHCR) and its application for nondestructive analysis of membrane protein-protein interactions on living cells. Anal Chim Acta 2020; 1125:8-18. [PMID: 32674784 DOI: 10.1016/j.aca.2020.05.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/02/2020] [Accepted: 05/08/2020] [Indexed: 11/16/2022]
Abstract
Though a variety of methods have been developed for the analysis of membrane protein-protein interactions (PPIs), amplified, dynamic and nondestructive analysis in situ is always a challenge. To address this issue, here we develop a method called proximity-exponential hybridization chain reaction (PEHCR). In our strategy, when two membrane proteins approach due to interaction, they will draw their respective oligonucleotide-labeled antibodies together. The proximity of the oligonucleotides thereafter triggers a well-designed enzyme-free exponential hybridization chain reaction, which can output amplified fluorescence imaging signals. As a model, analysis of EGFR-HER2 interactions under the regulation of different activators and inhibitors is achieved. Owing to the superior signal amplification performance, we are able to clearly observe the membrane PPIs by using a common fluorescence microscope. Furthermore, unlike the existing proximity techniques that require enzymes, our enzyme-free strategy avoids the need to use a specific buffer suitable for enzyme catalysis and can be run directly in cell liquid media to maximize the physiological activity of the cells. So, dynamic analysis of membrane PPIs on living cells is achieved, and the cells, after the analysis, are still alive and are available for other usage. The successful implementation of this work enriches the toolbox for the study of membrane PPIs especially on those heterogeneous cell populations with small amount.
Collapse
Affiliation(s)
- Dongsheng Mao
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China
| | - Tianshu Chen
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China
| | - Xiaohao Liu
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China
| | - Lingjie Ren
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China
| | - Chang Feng
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China; School of Medicine, Shanghai University, Shanghai, 200444, PR China.
| | - Guifang Chen
- Center for Molecular Recognition and Biosensing, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China.
| |
Collapse
|
7
|
Li Y, Sun S, Tian X, Qiu JG, Jiang B, Wang LJ, Zhang CY. Dephosphorylation-directed tricyclic DNA amplification cascades for sensitive detection of protein tyrosine phosphatase. Chem Commun (Camb) 2020; 56:11581-11584. [DOI: 10.1039/d0cc04714g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A new fluorescence method is developed for the sensitive detection of protein tyrosine phosphatase based on dephosphorylation-directed tricyclic DNA amplification cascades.
Collapse
Affiliation(s)
- Yueying Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Shuli Sun
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Xiaorui Tian
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Jian-Ge Qiu
- Academy of Medical Sciences
- Zhengzhou University
- Zhengzhou 450000
- China
| | - BingHua Jiang
- Academy of Medical Sciences
- Zhengzhou University
- Zhengzhou 450000
- China
| | - Li-juan Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| | - Chun-yang Zhang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Key Laboratory of Molecular and Nano Probes
- Ministry of Education
| |
Collapse
|
8
|
Lv L, Cui C, Xie W, Sun W, Ji S, Tian J, Guo Z. A label-free aptasensor for turn-on fluorescent detection of ochratoxin A based on aggregation-induced emission probe. Methods Appl Fluoresc 2019; 8:015003. [PMID: 31622960 DOI: 10.1088/2050-6120/ab4edf] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A novel label-free fluorescence aptasensor used for the detection of ochratoxin A (OTA) is presented in this study. When aggregated on the surface of DNA aptamer, aggregation-induced emission (AIE) fluorescence probe presents turn-on fluorescence property. The method proposed in this article was based on an AIE probe, 4, 4-(1E,1E)-2, 2-(anthracene-9, 10-diyl) bis (ethene-2, 1-diyl) bis (N, N, N-trimethylbenzenaminium iodide) (DSAI). With OTA present, the aptamer will combine with OTA and the conformation of the aptamer will switch to an antiparallel G-quadruplex from the initial random coil, which obstructs its digestion by Exo I. After the solution is added with DSAI, DSAI will aggregate on the surface of the aptamer/OTA complex and produces a strong emission. In the range of 5 to 500 ng · ml-1 OTA concentrations, the fluorescence increases with a linear logarithm relationship. The detection limit is 1.9 ng · ml-1. This method was used to detect OTA in spiked real samples, with recoveries and RSDs in the range of 92.2% to 106.3%, and 2.7% to 5.2%, respectively.
Collapse
Affiliation(s)
- Lei Lv
- College of Agriculture, Yanbian University, Yanji, 133002, People's Republic of China
| | | | | | | | | | | | | |
Collapse
|
9
|
Choudhury H, Pandey M, Yin TH, Kaur T, Jia GW, Tan SQL, Weijie H, Yang EKS, Keat CG, Bhattamishra SK, Kesharwani P, Md S, Molugulu N, Pichika MR, Gorain B. Rising horizon in circumventing multidrug resistance in chemotherapy with nanotechnology. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 101:596-613. [PMID: 31029353 DOI: 10.1016/j.msec.2019.04.005] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 03/24/2019] [Accepted: 04/02/2019] [Indexed: 02/07/2023]
Abstract
Multidrug resistance (MDR) is one of the key barriers in chemotherapy, leading to the generation of insensitive cancer cells towards administered therapy. Genetic and epigenetic alterations of the cells are the consequences of MDR, resulted in drug resistivity, which reflects in impaired delivery of cytotoxic agents to the cancer site. Nanotechnology-based nanocarriers have shown immense shreds of evidence in overcoming these problems, where these promising tools handle desired dosage load of hydrophobic chemotherapeutics to facilitate designing of safe, controlled and effective delivery to specifically at tumor microenvironment. Therefore, encapsulating drugs within the nano-architecture have shown to enhance solubility, bioavailability, drug targeting, where co-administered P-gp inhibitors have additionally combat against developed MDR. Moreover, recent advancement in the stimuli-sensitive delivery of nanocarriers facilitates a tumor-targeted release of the chemotherapeutics to reduce the associated toxicities of chemotherapeutic agents in normal cells. The present article is focused on MDR development strategies in the cancer cell and different nanocarrier-based approaches in circumventing this hurdle to establish an effective therapy against deadliest cancer disease.
Collapse
Affiliation(s)
- Hira Choudhury
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University, Jalan Jalil Perkasa, Bukit Jalil, 57000, Kuala Lumpur, Malaysia; Centre for Bioactive Molecules and Drug Delivery, Institute for Research, Development and Innovation, International Medical University, 57000, Kuala Lumpur, Malaysia.
| | - Manisha Pandey
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University, Jalan Jalil Perkasa, Bukit Jalil, 57000, Kuala Lumpur, Malaysia; Centre for Bioactive Molecules and Drug Delivery, Institute for Research, Development and Innovation, International Medical University, 57000, Kuala Lumpur, Malaysia
| | - Tan Hui Yin
- Bachelor of Pharmacy student, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Taasjir Kaur
- Bachelor of Pharmacy student, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Gan Wei Jia
- Bachelor of Pharmacy student, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - S Q Lawrence Tan
- Bachelor of Pharmacy student, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - How Weijie
- Bachelor of Pharmacy student, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Eric Koh Sze Yang
- Bachelor of Pharmacy student, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Chin Guan Keat
- Bachelor of Pharmacy student, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Subrat Kumar Bhattamishra
- Department of Life Sciences, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India
| | - Shadab Md
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Nagasekhara Molugulu
- Department of Pharmaceutical Technology, School of Pharmacy, International Medical University, Jalan Jalil Perkasa, Bukit Jalil, 57000, Kuala Lumpur, Malaysia; Centre for Bioactive Molecules and Drug Delivery, Institute for Research, Development and Innovation, International Medical University, 57000, Kuala Lumpur, Malaysia
| | - Mallikarjuna Rao Pichika
- Centre for Bioactive Molecules and Drug Delivery, Institute for Research, Development and Innovation, International Medical University, 57000, Kuala Lumpur, Malaysia; Department of Pharmaceutical Chemistry, School of Pharmacy, International Medical University, Kuala Lumpur 57000, Malaysia
| | - Bapi Gorain
- School of Pharmacy, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Selangor 47500, Malaysia.
| |
Collapse
|
10
|
Liu Y, Zhu Z, Wang C, Gao R, Yang X, Liu S. Responsive surface bioaffinity binding to construct flexible and sensitive electrochemical aptasensors. Analyst 2019; 144:2130-2137. [DOI: 10.1039/c8an02313a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A responsive surface bioaffinity binding strategy was developed for the fabrication of simple, flexible and amplified electrochemical aptasensors.
Collapse
Affiliation(s)
- Ying Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
| | - Zhencai Zhu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
| | - Chao Wang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
| | - Rui Gao
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
| | - Xiaoyan Yang
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
| | - Shufeng Liu
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science
- Ministry of Education
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
| |
Collapse
|
11
|
Yan X, Song Y, Liu J, Zhou N, Zhang C, He L, Zhang Z, Liu Z. Two-dimensional porphyrin-based covalent organic framework: A novel platform for sensitive epidermal growth factor receptor and living cancer cell detection. Biosens Bioelectron 2018; 126:734-742. [PMID: 30553103 DOI: 10.1016/j.bios.2018.11.047] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 11/10/2018] [Accepted: 11/28/2018] [Indexed: 12/22/2022]
Abstract
A porphyrin-based covalent organic framework (denoted as p-COF) was synthesized by a simple oil-bath method and exploited as a novel sensing layer for immobilizing epidermal growth factor receptor (EGFR)-targeting aptamer strands to detect trace EGFR and living michigan cancer foundation-7 (MCF-7) cells for the first time. p-COF presented a nanosheet-like structure, large cavities, rich nitrogen-bearing groups, high electrochemical activity, excellent bioaffinity, low toxicity, and good stability in aqueous solution; the microstructural features of this material enabled strong immobilization of the aptamer strands. Interactions between the aptamer strands and EGFR significantly changed the electrochemical signals of the modified electrode due to the formation of an aptamer-EGFR complex. The p-COF-based aptasensor exhibited an extremely low detection limit (LOD) of 5.64 fg·mL-1 obtained from differential pulse voltammetry and 7.54 fg·mL-1 originated from electrochemical impedance spectroscopy with a broad linear detection range of 0.05-100 pg·mL-1 of the EGFR concentration. When detecting living MCF-7 cells, the p-COF-based aptasensor showed an LOD of 61 cell·mL-1 with a linear detection range of 500 × 105 cell·mL-1. The fabricated aptasensor exhibited high selectivity, good stability, reproducibility, acceptable recyclability, and favorable applicability in human serum samples. We believe that the developed p-COF-based aptasensor is a potential candidate for the sensitive detection of target cancer markers or living cells.
Collapse
Affiliation(s)
- Xu Yan
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou 450052, PR China
| | - Yingpan Song
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou 450001, PR China
| | - Jiameng Liu
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou 450001, PR China
| | - Nan Zhou
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou 450052, PR China.
| | - Chunlin Zhang
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou 450052, PR China
| | - Linghao He
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou 450001, PR China
| | - Zhihong Zhang
- Henan Provincial Key Laboratory of Surface and Interface Science, Zhengzhou University of Light Industry, No. 136, Science Avenue, Zhengzhou 450001, PR China.
| | - Zhongyi Liu
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450000, PR China.
| |
Collapse
|
12
|
Zhang L, Cao D, Tang T, Zuo Z, Huang J, Duan L. A label-free fluorescence method for detection of ureC gene and diagnosis of Helicobacter pylori infection. LUMINESCENCE 2018; 33:941-946. [PMID: 29786166 DOI: 10.1002/bio.3493] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 03/06/2018] [Accepted: 03/16/2018] [Indexed: 12/12/2022]
Abstract
The feasibility of using a polymerase chain reaction (PCR)-based label-free DNA sensor for the detection of Helicobacter pylori is investigated. In particular, H. pylori ureC gene, a specific H. pylori nucleic acid sequence, was selected as the target sequence. In the presence of ureC gene, the target DNA could be amplified to dsDNA with much higher detectable levels. After added the SYBR green I (SGI), the sensing system could show high fluorescence. Thus, the target DNA can be detected by monitoring the change of fluorescence intensity of sensing system. The clinical performance of this method was determined by comparing it with another conventional technique urea breath test (UBT). The result also showed good distinguishing ability between negative and positive patient, which was in good agreement with that obtained by the UBT. It suggests that the label-free fluorescence-based method is more suitable for infection confirmation test of H. pylori. This approach offers great potential for simple, sensitive and cost-effective identification of H. pylori infection.
Collapse
Affiliation(s)
- Leiyi Zhang
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China
| | - Ding Cao
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China
| | - Tenglong Tang
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China
| | - Zhongkun Zuo
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China
| | - Jiangsheng Huang
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China
| | - Lunxi Duan
- Department of Minimally Invasive Surgery, The Second Xiangya Hospital of Central South University, Changsha, Hunan, P. R. China
| |
Collapse
|
13
|
Liu R, Wu H, Lv L, Kang X, Cui C, Feng J, Guo Z. Fluorometric aptamer based assay for ochratoxin A based on the use of exonuclease III. Mikrochim Acta 2018; 185:254. [PMID: 29656368 DOI: 10.1007/s00604-018-2786-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2017] [Accepted: 03/29/2018] [Indexed: 11/30/2022]
Abstract
This study describes an aptamer based assay for the mycotoxin ochratoxin A (OTA). The method is based on the use of an OTA-specific aptamer, exonuclease (Exo) III, SYBR Gold as a fluorescent probe, and a complementary strand that specifically combines with the aptamer. In the presence of OTA, the aptamer and OTA hybridize, thereby resulting in the formation of ssDNA, which is not digested by Exo III. Intense fluorescence is observed after addition of SYBR Gold (best measured at excitation/emission wavelengths of 495/540 nm). Fluorescence increases linearly with the log of the OTA concentration in the range from 8 to 1000 ng·mL-1. The detection limit is 4.7 ng·mL-1. The assay was applied to the determination of OTA in diluted [2%(v/v)] red wine, and recoveries and RSDs ranged between 93.5% and 113.8%, and between 3.2% and 5.7%, respectively. Graphical abstract In the presence of ochratoxin A (OTA), specific combinations of aptamer and OTA may occur and result in DNA double strands being untied, which avoids being digested by Exo III. Intense fluorescence is observed after SYBR Gold addition.
Collapse
Affiliation(s)
- Renjie Liu
- Institute of food science and engineering, Jilin agricultural University, Changchun, 130118, China
| | - Hua Wu
- Institute of food science and engineering, Jilin agricultural University, Changchun, 130118, China
- College of agriculture, Yanbian university, Yanji, 133002, China
| | - Lei Lv
- College of agriculture, Yanbian university, Yanji, 133002, China
| | - Xiaojiao Kang
- School of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan, 523808, China
| | - Chengbi Cui
- College of agriculture, Yanbian university, Yanji, 133002, China
| | - Jin Feng
- College of agriculture, Yanbian university, Yanji, 133002, China
| | - Zhijun Guo
- College of agriculture, Yanbian university, Yanji, 133002, China.
| |
Collapse
|
14
|
Oligonucleotide aptamers against tyrosine kinase receptors: Prospect for anticancer applications. Biochim Biophys Acta Rev Cancer 2018; 1869:263-277. [PMID: 29574128 DOI: 10.1016/j.bbcan.2018.03.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 02/07/2023]
Abstract
Transmembrane receptor tyrosine kinases (RTKs) play crucial roles in cancer cell proliferation, survival, migration and differentiation. Area of intense research is searching for effective anticancer therapies targeting these receptors and, to date, several monoclonal antibodies and small-molecule tyrosine kinase inhibitors have entered the clinic. However, some of these drugs show limited efficacy and give rise to acquired resistance. Emerging highly selective compounds for anticancer therapy are oligonucleotide aptamers that interact with their targets by recognizing a specific three-dimensional structure. Because of their nucleic acid nature, the rational design of advanced strategies to manipulate aptamers for both diagnostic and therapeutic applications is greatly simplified over antibodies. In this manuscript, we will provide a comprehensive overview of oligonucleotide aptamers as next generation strategies to efficiently target RTKs in human cancers.
Collapse
|