Magnetic-Composite-Modified Polycrystalline Silicon Nanowire Field-Effect Transistor for Vascular Endothelial Growth Factor Detection and Cancer Diagnosis

Hsiao Chien Chen, Jian Tai Qiu, Fu Liang Yang, Yin Chih Liu, Min Cheng Chen, Rung Ywan Tsai, Hung Wei Yang, Chia Yi Lin, Chu Chi Lin, Tzong Shoon Wu, Yi Ming Tu, Min Cong Xiao, Chia Hua Ho, Chien Chao Huang, Chao Sung Lai, Mu Yi Hua

研究成果: Article同行評審

17 引文 斯高帕斯(Scopus)

摘要

This study proposes a vascular endothelial growth factor (VEGF) biosensor for diagnosing various stages of cervical carcinoma. In addition, VEGF concentrations at various stages of cancer therapy are determined and compared to data obtained by computed tomography (CT) and cancer antigen 125 (CA-125). The increase in VEGF concentrations during operations offers useful insight into dosage timing during cancer therapy. This biosensor uses Avastin as the biorecognition element for the potential cancer biomarker VEGF and is based on a n-type polycrystalline silicon nanowire field-effect transistor (poly-SiNW-FET). Magnetic nanoparticles with poly[aniline-co-N-(1-one-butyric acid) aniline]-Fe3O4 (SPAnH-Fe3O4) shell-core structures are used as carriers for Avastin loading and provide rapid purification due to their magnetic properties, which prevent the loss of bioactivity; furthermore, the high surface area of these structures increases the quantity of Avastin immobilized. Average concentrations in human blood for species that interfere with detection specificity are also evaluated. The detection range of the biosensor for serum samples covers the results expected from both healthy individuals and cancer patients.

原文English
頁(從 - 到)9443-9450
頁數8
期刊Analytical Chemistry
86
發行號19
DOIs
出版狀態Published - 2014 十月 7

All Science Journal Classification (ASJC) codes

  • 分析化學

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