Poly(dimethyl siloxane)-based protein chip for simultaneous detection of multiple samples: Use of glycidyl methacrylate photopolymer for site-specific protein immobilization
- Authors
- Park, Kyoung Hwan; Park, Hyun Gyu; Kim, Joon-Ho; Seong, Ki Hun
- Issue Date
- Dec-2006
- Publisher
- ELSEVIER ADVANCED TECHNOLOGY
- Keywords
- glycidyl methacrylate; poly(dimethyl siloxane) (PDMS); microfluidics; poly(ethylene glycol) diacrylate; biomolecular immobilization
- Citation
- BIOSENSORS & BIOELECTRONICS, v.22, no.5, pp 613 - 620
- Pages
- 8
- Indexed
- SCIE
SCOPUS
- Journal Title
- BIOSENSORS & BIOELECTRONICS
- Volume
- 22
- Number
- 5
- Start Page
- 613
- End Page
- 620
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/44421
- DOI
- 10.1016/j.bios.2006.01.029
- ISSN
- 0956-5663
1873-4235
- Abstract
- This paper describes fabrication of a poly(dimethyl siloxane) (PDMS)-based chip to analyze multiple protein interactions utilizing glycidyl methacrylate (GMA) photopolymer for a site-specific immobilization of capture proteins in a closed system. First, using one direction channels of a PDMS mold having cross-channels, GMA micropads were prepared by photopolymerizing GMA solution by 365 nm light irradiation at predetermined positions. After the first mold was replaced with a second mold having higher height or directly without mold changing, capture proteins were allowed to be covalently immobilized onto the surface of the epoxide-activated GMA pads. Following immobilization, poly(ethylene glycol) diacrylate (PEG-DA) precursor was photopolymerized at specific regions to generate plugs for prevention of mixing between different sample injection channels, diminishing the need of a mold changing for sample injections. Final chip was assembled by connecting separated sample injection channels using a connector mold. The viability of this strategy was successfully demonstrated by simultaneous detection of two different antigen-antibody interactions. (c) 2006 Elsevier B.V. All rights reserved.
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