1
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Zhu J, Yin H, Zheng S, Yu H, Yang L, Wang L, Geng X, Deng Y. Tag-free fluorometric aptasensor for detection of chromium(VI) in foods via SYBR Green I signal amplification and aptamer structure transition. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:8008-8021. [PMID: 38828647 DOI: 10.1002/jsfa.13631] [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: 03/09/2024] [Revised: 04/08/2024] [Accepted: 05/02/2024] [Indexed: 06/05/2024]
Abstract
BACKGROUND In response to growing concerns regarding heavy metal contamination in food, particularly chromium (Cr)(VI) contamination, this study presented a simple, sensitive and practical method for Cr(VI) detection. RESULTS A magnetic separation-based capture-exponential enrichment ligand system evolution (SELEX) method was used to identify and characterize DNA aptamers with a high affinity for Cr(VI). An aptamer, Cr-15, with a dissociation constant (Kd) of 4.42 ± 0.44 μmol L-1 was obtained after only eight rounds of selection. Further innovative methods combining molecular docking, dynamic simulation and thermodynamic analysis revealed that CrO4 2- could bind to the 19th and 20th guanine bases of Cr-15 via hydrogen bonds. Crucially, a label-free fluorometric aptasensor based on SYBR Green I was successfully constructed to detect CrO4 2-, achieving a linear detection range of 60-300 nmol L-1 with a lower limit of detection of 44.31 nmol L-1. Additionally, this aptasensor was able to quantitatively detect CrO4 2- in grapes and broccoli within 40 min, with spike recovery rates ranging from 89.22% to 108.05%. The designed fluorometric aptasensor exhibited high selectivity and could detect CrO4 2- in real samples without sample processing or target pre-enrichment. CONCLUSION The aptasensor demonstrated its potential as a reliable tool for monitoring Cr(VI) contamination in fruit and vegetable products. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Jiangxiong Zhu
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Hao Yin
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Sisi Zheng
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Hong Yu
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Linnan Yang
- School of Big Data, Yunnan Agricultural University, Kunming, China
| | - Lumei Wang
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
| | - Xueqing Geng
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Yun Deng
- Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
- Yunnan Dali Research Institute of Shanghai Jiao Tong University, Shanghai, China
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2
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Chen Z, Yang Y, Cui X, Chai L, Liu H, Pan Y, Zhang Y, Xie Y, Le T. Process, advances, and perspectives of graphene oxide-SELEX for the development of aptamer molecular probes: A comprehensive review. Anal Chim Acta 2024; 1320:343004. [PMID: 39142771 DOI: 10.1016/j.aca.2024.343004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 07/19/2024] [Accepted: 07/21/2024] [Indexed: 08/16/2024]
Abstract
BACKGROUND Aptamers are screened via the systematic evolution of ligands by exponential enrichment (SELEX) and are widely used in molecular diagnostics and targeted therapies. The development of efficient and convenient SELEX technology has facilitated rapid access to high-performance aptamers, thereby advancing the aptamer industry. Graphene oxide (GO) serves as an immobilization matrix for libraries in GO-SELEX, making it suitable for screening aptamers against diverse targets. RESULTS This review summarizes the detailed steps involved in GO-SELEX, including monitoring methods, various sublibrary acquisition methods, and practical applications from its inception to the present day. In addition, the potential of GO-SELEX in the development of broad-spectrum aptamers is explored, and its current limitations for future development are emphasized. This review effectively promotes the application of the GO-SELEX technique by providing valuable insights and assisting researchers interested in conducting related studies. SIGNIFICANCE AND NOVELTY To date, no review on the topic of GO-SELEX has been published, making it challenging for researchers to initiate studies in this area. We believe that this review will broaden the SELEX options available to researchers, ensuring that they can meet the growing demand for molecular probes in the scientific domain.
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Affiliation(s)
- Zhuoer Chen
- Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, PR China
| | - Ying Yang
- Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, PR China
| | - Xinge Cui
- Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, PR China
| | - Luwei Chai
- Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, PR China
| | - Hongbing Liu
- Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, PR China
| | - Yangwei Pan
- Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, PR China
| | - Yongkang Zhang
- Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, PR China
| | - Yujia Xie
- Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, PR China
| | - Tao Le
- Key Laboratory of Conservation and Utilization of Freshwater Fishes, Animal Biology Key Laboratory of Chongqing Education Commission of China, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, PR China.
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3
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Lim H, Chang J, Kim KI, Moon Y, Lee S, Lee B, Lee JH, Lee J. On-chip selection of adenosine aptamer using graphene oxide-coated magnetic nanoparticles. BIOMICROFLUIDICS 2022; 16:044102. [PMID: 35909647 PMCID: PMC9337878 DOI: 10.1063/5.0095419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
Systematic evolution of ligands by exponential enrichment (SELEX) is a method that is generally used for developing aptamers, which have arisen the promising alternatives for antibodies. However, conventional SELEX methods have limitations, such as a limited selection of target molecules, time-consuming and complex fabrication processes, and labor-intensive processes, which result in low selection yields. Here, we used (i) graphene oxide (GO)-coated magnetic nanoparticles in the selection process for separation and label-free detection and (ii) a multilayered microfluidic device manufactured using a three-dimensionally printed mold that is equipped with automated control valves to achieve precise fluid flows. The developed on-chip aptamer selection device and GO-coated magnetic nanoparticles were used to screen aptamer candidates for adenosine in eight cycles of the selection process within approximately 2 h for each cycle. Based on results from isothermal titration calorimetry, an aptamer with a dissociation constant of 18.6 ± 1.5 μM was selected. Therefore, the on-chip platform based on GO-coated magnetic nanoparticles provides a novel label-free screening technology for biosensors and micro/nanobiotechnology for achieving high-quality aptamers.
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Affiliation(s)
| | - Junhyuck Chang
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Kyung-il Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Youngkwang Moon
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Saebom Lee
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Byoungsang Lee
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Republic of Korea
| | - Jung Heon Lee
- Authors to whom correspondence should be addressed:, Tel.: +82-31-290-7404 and , Tel.: +82-31-299-4845
| | - Jinkee Lee
- Authors to whom correspondence should be addressed:, Tel.: +82-31-290-7404 and , Tel.: +82-31-299-4845
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4
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Xie Y, Ma L, Ling S, Ouyang H, Liang A, Jiang Z. Aptamer-Adjusted Carbon Dot Catalysis-Silver Nanosol SERS Spectrometry for Bisphenol A Detection. NANOMATERIALS 2022; 12:nano12081374. [PMID: 35458083 PMCID: PMC9032719 DOI: 10.3390/nano12081374] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/05/2022] [Accepted: 04/15/2022] [Indexed: 11/23/2022]
Abstract
Carbon dots (CDs) can be prepared from various organic (abundant) compounds that are rich in surfaces with –OH, –COOH, and –NH2 groups. Therefore, CDs exhibit good biocompatibility and electron transfer ability, allowing flexible surface modification and accelerated electron transfer during catalysis. Herein, CDs were prepared using a hydrothermal method with fructose, saccharose, and citric acid as C sources and urea as an N dopant. The as-prepared CDs were used to catalyze AgNO3–trisodium citrate (TSC) to produce Ag nanoparticles (AgNPs). The surface-enhanced Raman scattering (SERS) intensity increased with the increasing CDs concentration with Victoria blue B (VBB) as a signal molecule. The CDs exhibited a strong catalytic activity, with the highest activity shown by fructose-based CDs. After N doping, catalytic performance improved; with the passivation of a wrapped aptamer, the electron transfer was effectively disrupted (retarded). This resulted in the inhibition of the reaction and a decrease in the SERS intensity. When bisphenol A (BPA) was added, it specifically bound to the aptamer and CDs were released, recovering catalytical activity. The SERS intensity increased with BPA over the concentration range of 0.33–66.67 nmol/L. Thus, the aptamer-adjusted nanocatalytic SERS method can be applied for BPA detection.
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Affiliation(s)
- Yuqi Xie
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control in Western Guangxi (Baise University), Education Department of Guangxi Zhuang Autonomous Region, College of Chemistry and Environment Engineering, Baise University, Baise 533000, China; (Y.X.); (L.M.); (S.L.)
| | - Lu Ma
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control in Western Guangxi (Baise University), Education Department of Guangxi Zhuang Autonomous Region, College of Chemistry and Environment Engineering, Baise University, Baise 533000, China; (Y.X.); (L.M.); (S.L.)
| | - Shaoming Ling
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control in Western Guangxi (Baise University), Education Department of Guangxi Zhuang Autonomous Region, College of Chemistry and Environment Engineering, Baise University, Baise 533000, China; (Y.X.); (L.M.); (S.L.)
| | - Huixiang Ouyang
- Key Laboratory of Regional Ecological Environment Analysis and Pollution Control in Western Guangxi (Baise University), Education Department of Guangxi Zhuang Autonomous Region, College of Chemistry and Environment Engineering, Baise University, Baise 533000, China; (Y.X.); (L.M.); (S.L.)
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China;
- Correspondence: (H.O.); (Z.J.)
| | - Aihui Liang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China;
| | - Zhiliang Jiang
- Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guangxi Normal University, Guilin 541004, China;
- Correspondence: (H.O.); (Z.J.)
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5
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Liu Y, He L, Zhao Y, Cao Y, Yu Z, Lu F. Optimization of Surface-Enhanced Raman Spectroscopy Detection Conditions for Interaction between Gonyautoxin and Its Aptamer. Toxins (Basel) 2022; 14:toxins14010049. [PMID: 35051026 PMCID: PMC8779825 DOI: 10.3390/toxins14010049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/24/2021] [Accepted: 12/30/2021] [Indexed: 02/04/2023] Open
Abstract
This study aimed to optimize the detection conditions for surface-enhanced Raman spectroscopy (SERS) of single-stranded DNA (ssDNA) in four different buffers and explore the interaction between gonyautoxin (GTX1/4) and its aptamer, GO18. The influence of the silver colloid solution and MgSO4 concentration (0.01 M) added under four different buffered conditions on DNA SERS detection was studied to determine the optimum detection conditions. We explored the interaction between GTX1/4 and GO18 under the same conditions as those in the systematic evolution of ligands by exponential enrichment technique, using Tris-HCl as the buffer. The characteristic peaks of GO18 and its G-quadruplex were detected in four different buffer solutions. The change in peak intensity at 1656 cm−1 confirmed that the binding site between GTX1/4 and GO18 was in the G-quadruplex plane. The relative intensity of the peak at 1656 cm−1 was selected for the GTX1/4–GO18 complex (I1656/I1099) to plot the ratio of GTX1/4 in the Tris-HCl buffer condition (including 30 μL of silver colloid solution and 2 μL of MgSO4), and a linear relationship was obtained as follows: Y = 0.1867X + 1.2205 (R2 = 0.9239). This study provides a basis for subsequent application of SERS in the detection of ssDNA, as well as the binding of small toxins and aptamers.
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Affiliation(s)
- Yan Liu
- Department of Pharmaceutical Analysis, College of Pharmacy, Naval Medical University, Shanghai 200433, China;
- Shanghai Key Laboratory for Pharmaceutical Metabolite Research, Naval Medical University, Shanghai 200433, China
| | - Lijuan He
- Department of Pharmaceutical Analysis, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; (L.H.); (Y.Z.)
| | - Yunli Zhao
- Department of Pharmaceutical Analysis, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; (L.H.); (Y.Z.)
| | - Yongbing Cao
- Institute of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200082, China
- Correspondence: (Y.C.); (Z.Y.); (F.L.)
| | - Zhiguo Yu
- Department of Pharmaceutical Analysis, School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; (L.H.); (Y.Z.)
- Correspondence: (Y.C.); (Z.Y.); (F.L.)
| | - Feng Lu
- Department of Pharmaceutical Analysis, College of Pharmacy, Naval Medical University, Shanghai 200433, China;
- Shanghai Key Laboratory for Pharmaceutical Metabolite Research, Naval Medical University, Shanghai 200433, China
- Correspondence: (Y.C.); (Z.Y.); (F.L.)
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6
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Guo W, Zhang C, Ma T, Liu X, Chen Z, Li S, Deng Y. Advances in aptamer screening and aptasensors' detection of heavy metal ions. J Nanobiotechnology 2021; 19:166. [PMID: 34074287 PMCID: PMC8171055 DOI: 10.1186/s12951-021-00914-4] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 05/26/2021] [Indexed: 02/07/2023] Open
Abstract
Heavy metal pollution has become more and more serious with industrial development and resource exploitation. Because heavy metal ions are difficult to be biodegraded, they accumulate in the human body and cause serious threat to human health. However, the conventional methods to detect heavy metal ions are more strictly to the requirements by detection equipment, sample pretreatment, experimental environment, etc. Aptasensor has the advantages of strong specificity, high sensitivity and simple preparation to detect small molecules, which provides a new direction platform in the detection of heavy metal ions. This paper reviews the selection of aptamers as target for heavy metal ions since the 21th century and aptasensors application for detection of heavy metal ions that were reported in the past five years. Firstly, the selection methods for aptamers with high specificity and high affinity are introduced. Construction methods and research progress on sensor based aptamers as recognition element are also introduced systematically. Finally, the challenges and future opportunities of aptasensors in detecting heavy metal ions are discussed.
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Affiliation(s)
- Wenfei Guo
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, 412007 China
| | - Chuanxiang Zhang
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, 412007 China
| | - Tingting Ma
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, 412007 China
| | - Xueying Liu
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, 412007 China
| | - Zhu Chen
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, 412007 China
| | - Song Li
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, 412007 China
| | - Yan Deng
- Hunan Key Laboratory of Biomedical Nanomaterials and Devices, Hunan University of Technology, Zhuzhou, 412007 China
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7
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Lee G, Kang SM, Lee SB, Lee D, Ko Y, Nam J, Jo J, Hah SS. Monitoring of
Cell‐Dependent
Reduced States Using
Aptamer‐Functionalized Reduction‐Sensitive
Quantum Dots. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Gwan‐Ho Lee
- Advanced Analysis Center Korea Institute of Science and Technology Seoul 02792 South Korea
| | - Sung Muk Kang
- Department of Chemistry and Research Institute of Basic Sciences Kyung Hee University 26 Kyunghee‐daero Seoul 02447 South Korea
| | - Soo Bin Lee
- Department of Chemistry and Research Institute of Basic Sciences Kyung Hee University 26 Kyunghee‐daero Seoul 02447 South Korea
| | - Dohyun Lee
- Department of Chemistry and Research Institute of Basic Sciences Kyung Hee University 26 Kyunghee‐daero Seoul 02447 South Korea
| | - Youngkuk Ko
- Department of Chemistry and Research Institute of Basic Sciences Kyung Hee University 26 Kyunghee‐daero Seoul 02447 South Korea
| | - Jungyeon Nam
- Department of Chemistry and Research Institute of Basic Sciences Kyung Hee University 26 Kyunghee‐daero Seoul 02447 South Korea
| | - Juhyun Jo
- Department of Chemistry and Research Institute of Basic Sciences Kyung Hee University 26 Kyunghee‐daero Seoul 02447 South Korea
| | - Sang Soo Hah
- Department of Chemistry and Research Institute of Basic Sciences Kyung Hee University 26 Kyunghee‐daero Seoul 02447 South Korea
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8
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WANG ZJ, CHEN EN, YANG G, ZHAO XY, QU F. Research Advances of Aptamers Selection for Small Molecule Targets. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1016/s1872-2040(20)60013-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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9
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Cui X, Song M, Liu Y, Yuan Y, Huang Q, Cao Y, Lu F. Identifying conformational changes of aptamer binding to theophylline: A combined biolayer interferometry, surface-enhanced Raman spectroscopy, and molecular dynamics study. Talanta 2020; 217:121073. [PMID: 32498900 DOI: 10.1016/j.talanta.2020.121073] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 04/14/2020] [Accepted: 04/20/2020] [Indexed: 11/20/2022]
Abstract
Theophylline is a potent bronchodilator for the treatment of asthma, bronchitis, and emphysema. Its narrow therapeutic window (20-100 μM) demands that the blood concentration of theophylline be monitored carefully, which can be achieved by aptamer capture. Thus, an understanding of what occurs when aptamers bind to theophylline is critical for identifying a high-affinity and high-specificity aptamer, which improve the sensitivity and selectivity of theophylline detection. Consequently, there is an urgent need to develop a simple, convenient, and nondestructive method to monitor conformational changes during the binding process. Here, we report the determination of the affinity of a selected aptamer and theophylline via biolayer interferometry (BLI) experiments. Additionally, using surface-enhanced Raman spectroscopy (SERS), the conformational changes on theophylline-aptamer binding were identified from differences in the SER spectra. Finally, molecular dynamics (MD) simulations were used to identify the specific conformational changes of the aptamer during the binding process. Such a combined BLI-SERS-MD method provides an in-depth understanding of the theophylline-aptamer binding processes and a comprehensive explanation for conformational changes, which helps to select, design, and modify an aptamer with high affinity and specificity. It can also be used as a scheme for the study of other aptamer-ligand interactions, which can be applied to the detection, sensing, clinical diagnosis, and treatment of diseases.
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Affiliation(s)
- Xiaolin Cui
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, China
| | - Menghua Song
- State Key Laboratory of Genetic Engineering, MOE Engineering Research Center of Gene Technology, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Yan Liu
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, China
| | - Yifan Yuan
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, China
| | - Qiang Huang
- State Key Laboratory of Genetic Engineering, MOE Engineering Research Center of Gene Technology, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Yongbing Cao
- Institute of Vascular Disease, Shanghai TCM-Integrated Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200082, China
| | - Feng Lu
- School of Pharmacy, Second Military Medical University, Shanghai, 200433, China; Shanghai Key Laboratory for Pharmaceutical Metabolite Research, Shanghai, 200433, China.
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Abstract
Nucleic acid aptamers have tremendous potential as molecular recognition elements in biomedical targeting, analytical arrays, and self-signaling sensors. However, practical limitations and inefficiencies in the process of selecting novel aptamers (SELEX) have hampered widespread adoption of aptamer technologies. Many factors have recently contributed to more effective aptamer screening, but no influence has done more to increase the efficiency, scale, and automation of aptamer selection than that of new microfluidic SELEX techniques. This review introduces aptamers as a powerful chemical and biological tool, briefly highlights traditional SELEX techniques and their limitations, covers in detail the recent advancements in microfluidic methods of aptamer selection and characterization, and suggests possible future directions of the field.
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Affiliation(s)
- Sean K Dembowski
- Department of Chemistry, University of Minnesota, Minneapolis, MN 55455, USA.
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Affiliation(s)
- Wenhu Zhou
- Xiangya
School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Runjhun Saran
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Juewen Liu
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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12
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Zainol Abidin AS, Rahim RA, Md Arshad MK, Fatin Nabilah MF, Voon CH, Tang TH, Citartan M. Current and Potential Developments of Cortisol Aptasensing towards Point-of-Care Diagnostics (POTC). SENSORS 2017; 17:s17051180. [PMID: 28531146 PMCID: PMC5470925 DOI: 10.3390/s17051180] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 04/17/2017] [Accepted: 04/18/2017] [Indexed: 12/19/2022]
Abstract
Anxiety is a psychological problem that often emerges during the normal course of human life. The detection of anxiety often involves a physical exam and a self-reporting questionnaire. However, these approaches have limitations, as the data might lack reliability and consistency upon application to the same population over time. Furthermore, there might be varying understanding and interpretations of the particular question by the participant, which necessitating the approach of using biomarker-based measurement for stress diagnosis. The most prominent biomarker related to stress, hormone cortisol, plays a key role in the fight-or-flight situation, alters the immune response, and suppresses the digestive and the reproductive systems. We have taken the endeavour to review the available aptamer-based biosensor (aptasensor) for cortisol detection. The potential point-of-care diagnostic strategies that could be harnessed for the aptasensing of cortisol were also envisaged.
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Affiliation(s)
- Azrul Syafiq Zainol Abidin
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Ruslinda A Rahim
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Mohd Khairuddin Md Arshad
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Mohd Faudzi Fatin Nabilah
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Chun Hong Voon
- Institute of Nano Electronic Engineering (INEE), Universiti Malaysia Perlis, Kangar, Perlis 01000, Malaysia.
| | - Thean-Hock Tang
- Advanced Medical & Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang 13200, Malaysia.
| | - Marimuthu Citartan
- Advanced Medical & Dental Institute (AMDI), Universiti Sains Malaysia, Kepala Batas, Penang 13200, Malaysia.
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A mini-review on functional nucleic acids-based heavy metal ion detection. Biosens Bioelectron 2016; 86:353-368. [DOI: 10.1016/j.bios.2016.06.075] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 06/24/2016] [Accepted: 06/24/2016] [Indexed: 02/07/2023]
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14
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Ruscito A, DeRosa MC. Small-Molecule Binding Aptamers: Selection Strategies, Characterization, and Applications. Front Chem 2016; 4:14. [PMID: 27242994 PMCID: PMC4861895 DOI: 10.3389/fchem.2016.00014] [Citation(s) in RCA: 231] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 03/23/2016] [Indexed: 11/13/2022] Open
Abstract
Aptamers are single-stranded, synthetic oligonucleotides that fold into 3-dimensional shapes capable of binding non-covalently with high affinity and specificity to a target molecule. They are generated via an in vitro process known as the Systematic Evolution of Ligands by EXponential enrichment, from which candidates are screened and characterized, and then used in various applications. These applications range from therapeutic uses to biosensors for target detection. Aptamers for small molecule targets such as toxins, antibiotics, molecular markers, drugs, and heavy metals will be the focus of this review. Their accurate detection is needed for the protection and wellbeing of humans and animals. However, the small molecular weights of these targets, including the drastic size difference between the target and the oligonucleotides, make it challenging to select, characterize, and apply aptamers for their detection. Thus, recent (since 2012) notable advances in small molecule aptamers, which have overcome some of these challenges, are presented here, while defining challenges that still exist are discussed.
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Affiliation(s)
| | - Maria C DeRosa
- Department of Chemistry, Carleton University Ottawa, ON, Canada
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