標題: Detection of serum uric acid using the optical polymeric enzyme biochip system
作者: Huang, SH
Shih, YC
Wu, CY
Yuan, CJ
Yang, YS
Li, YK
Wu, TK
生物科技學系
應用化學系
電子工程學系及電子研究所
Department of Biological Science and Technology
Department of Applied Chemistry
Department of Electronics Engineering and Institute of Electronics
關鍵字: CMOS photo array sensor;polymeric enzyme biochip;uricase;peroxidase
公開日期: 15-Jul-2004
摘要: An optical polymeric biochip system based on the complementary metal oxide semiconductor (CMOS) photo array sensor and polymeric enzyme biochip for rapidly quantitating uric acid in a one-step procedure was developed. The CMOS sensor was designed with N+/P-well structure and manufactured using a standard 0.5 mum CMOS process. The polymeric enzyme biochip was immobilized with uricase-peroxidase and used to fill the reacting medium with the sample. This study encompasses the cloning of the Bacillus subtilis uricase gene and expression in Escherichia coli, as well as the purification of uricase and measurement of its activity. The cloned uricase gene included an open reading frame of 1491 nucleotides that encodes a protein of approximately 55 kDa. The expression of the putative MBP-fusion protein involved approximately 98 kDa of the protein. The CMOS sensor response was stronger at a higher temperature range of 20-40degreesC, with optimal pH at 8.5. The calibration curve of purified uric acid was linear in the concentration range from 2.5 to 12.5 mg/dL. The results obtained for serum uric acid correlated quite closely with those obtained using the Beckman Synchron method. (C) 2004 Elsevier B.V All rights reserved.
URI: http://dx.doi.org/10.1016/j.bios.2003.12.026
http://hdl.handle.net/11536/26567
ISSN: 0956-5663
DOI: 10.1016/j.bios.2003.12.026
期刊: BIOSENSORS & BIOELECTRONICS
Volume: 19
Issue: 12
起始頁: 1627
結束頁: 1633
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