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Ahmad R, Destgeer G, Afzal M, Park J, Ahmed H, Jung JH, Park K, Yoon TS, Sung HJ. Acoustic Wave-Driven Functionalized Particles for Aptamer-Based Target Biomolecule Separation. Anal Chem 2017; 89:13313-13319. [PMID: 29148722 DOI: 10.1021/acs.analchem.7b03474] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We developed a hybrid microfluidic device that utilized acoustic waves to drive functionalized microparticles inside a continuous flow microchannel and to separate particle-conjugated target proteins from a complex fluid. The acoustofluidic device is composed of an interdigitated transducer that produces high-frequency surface acoustic waves (SAW) and a polydimethylsiloxane (PDMS) microfluidic channel. The SAW interacted with the sample fluid inside the microchannel and deflected particles from their original streamlines to achieve separation. Streptavidin-functionalized polystyrene (PS) microparticles were used to capture aptamer (single-stranded DNA) labeled at one end with a biotin molecule. The free end of the customized aptamer15 (apt15), which was attached to the microparticles via streptavidin-biotin linkage to form the PS-apt15 conjugate, was used to capture the model target protein, thrombin (th), by binding at exosite I to form the PS-apt15-th complex. We demonstrated that the PS-apt15 conjugate selectively captured thrombin molecules in a complex fluid. After the PS-apt15-th complex was formed, the sample fluid was pumped through a PDMS microchannel along with two buffer sheath flows that hydrodynamically focused the sample flow prior to SAW exposure for PS-apt15-th separation from the non-target proteins. We successfully separated thrombin from mCardinal2 and human serum using the proposed acoustofluidic device.
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Affiliation(s)
- Raheel Ahmad
- Department of Mechanical Engineering, KAIST , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea
| | - Ghulam Destgeer
- Department of Mechanical Engineering, KAIST , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea
| | - Muhammad Afzal
- Department of Proteome Structural Biology, KRIBB School of Bioscience, Korea University of Science and Technology , 125 Gwahak-ro Yuseong-gu, Daejeon 34141, Korea
| | - Jinsoo Park
- Department of Mechanical Engineering, KAIST , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea
| | - Husnain Ahmed
- Department of Mechanical Engineering, KAIST , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea
| | - Jin Ho Jung
- Department of Mechanical Engineering, KAIST , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea
| | - Kwangseok Park
- Department of Mechanical Engineering, KAIST , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea
| | - Tae-Sung Yoon
- Department of Proteome Structural Biology, KRIBB School of Bioscience, Korea University of Science and Technology , 125 Gwahak-ro Yuseong-gu, Daejeon 34141, Korea
| | - Hyung Jin Sung
- Department of Mechanical Engineering, KAIST , 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Korea
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Iranmanesh I, Ramachandraiah H, Russom A, Wiklund M. On-chip ultrasonic sample preparation for cell based assays. RSC Adv 2015. [DOI: 10.1039/c5ra16865a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We demonstrate pre-alignment, size-based separation, isolation, trapping, up-concentration and fluorescence monitoring of cells in a sequence by the use of a multi-step, three-transducer acoustophoresis chip designed for cellular sample preparation.
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Affiliation(s)
- Ida Iranmanesh
- Department of Applied Physics
- Albanova
- KTH Royal Institute of Technology
- SE-106 91 Stockholm
- Sweden
| | - Harisha Ramachandraiah
- Division of Proteomics and Nanobiotechnology
- Science for Life Laboratory
- KTH Royal Institute of Technology
- SE-171 21 Solna
- Sweden
| | - Aman Russom
- Division of Proteomics and Nanobiotechnology
- Science for Life Laboratory
- KTH Royal Institute of Technology
- SE-171 21 Solna
- Sweden
| | - Martin Wiklund
- Department of Applied Physics
- Albanova
- KTH Royal Institute of Technology
- SE-106 91 Stockholm
- Sweden
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