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Clinical Studies of Ci-5, Sol-gel Encapsulated Multiplex Antibody Microarray for Quantitative Fluorometric Detection of Simultaneous Five Different Tumor Antigens. BIOCHIP JOURNAL 2019. [DOI: 10.1007/s13206-019-3409-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Sekhon SS, Lee SH, Lee KA, Min J, Lee BT, Kim KW, Ahn JY, Kim YH. Defining the copper binding aptamotif and aptamer integrated recovery platform (AIRP). NANOSCALE 2017; 9:2883-2894. [PMID: 28177016 DOI: 10.1039/c6nr09408b] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The potential copper binding sites in aptamers have been predicted on the basis of secondary structures and the binding affinity of aptamers with copper. Out of the 4 aptamers (Cu-A1 to Cu-A4) selected by SELEX and examined in the present study, the Cu-A2 aptamer shows the highest binding affinity to copper with the lowest KD value of 1.83 × 10-11 M. In order to confirm the binding of copper to the proposed region, the binding affinity was experimentally validated using mutation and deletion analysis. We have confirmed that the high G-C pairing patterns and short stem-interval distance play important roles in copper binding. Aptamer specificity was also verified against diverse heavy metals. We also demonstrate an Aptamer Integrated Recovery Platform (AIRP) to recover copper from acidic mine drainage. AIRP can be easily regenerated at least 20 times without significant deterioration of the retrieval performance. To the best of our knowledge, AIRP is the first demonstration of copper specific recovery using aptamers. This can be scaled up and would have diverse applications in metal contaminated water treatment, recovery and as a potential biosensor for environmental analysis, monitoring, and risk assessment.
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Affiliation(s)
- Simranjeet Singh Sekhon
- School of Biological Sciences, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju 28644, South Korea.
| | - Sang-Hee Lee
- School of Biological Sciences, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju 28644, South Korea.
| | - Kyeong-Ah Lee
- School of Biological Sciences, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju 28644, South Korea.
| | - Jiho Min
- Department of Bioprocess Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin-Gu Jeonju 54896, South Korea
| | - Byung-Tae Lee
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Sciences and Technology (GIST), 123 Cheomdan-gwagiro, 500-712, South Korea
| | - Kyoung-Woong Kim
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Sciences and Technology (GIST), 123 Cheomdan-gwagiro, 500-712, South Korea
| | - Ji-Young Ahn
- School of Biological Sciences, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju 28644, South Korea.
| | - Yang-Hoon Kim
- School of Biological Sciences, Chungbuk National University, 1 Chungdae-Ro, Seowon-Gu, Cheongju 28644, South Korea.
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Ren S, Jiang Y, Yoon HR, Hong SW, Shin D, Lee S, Lee DK, Jin MM, Min IM, Kim S. Label-free Detection of the Transcription Initiation Factor Assembly and Specific Inhibition by Aptamers. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.5.1279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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