High sensitive detection of C-reactive protein by total internal reflection fluorescence microscopy on rapidly making nanoarray protein chip
- Authors
- Islam, Md. Shahinul; Lee, Hee Gu; Choo, Jaebum; Song, Joon Myong; Kang, Seong Ho
- Issue Date
- 15-Jun-2010
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- C-reactive protein; Nanoarray protein chip; Surface patterning tool; Single-molecule detection; Total internal reflection fluorescence microscopy (TIRFM)
- Citation
- TALANTA, v.81, no.4-5, pp 1402 - 1408
- Pages
- 7
- Journal Title
- TALANTA
- Volume
- 81
- Number
- 4-5
- Start Page
- 1402
- End Page
- 1408
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/46859
- DOI
- 10.1016/j.talanta.2010.02.042
- ISSN
- 0039-9140
1873-3573
- Abstract
- This study investigated a method for the high sensitivity detection and quantification of the C-reactive protein (CRP) in human serum using total internal reflection fluorescence microscopy (TIRFM) on a rapidly made nanoarray protein chip The nanoarray biotin-probe was patterned onto 3-mercaptopropyl trimethoxysilane-coated cover glass with a spot diameter of similar to 400 nm within 1 min using a NanoeNablei (TM)-based surface patterning tool The unlabeled CRP molecules were detected in human sera using TIRFM, based on a sandwich fluorescence immunoassay. The linear regression for standard CRP in the range of 50 zM-1 fM was determined using the equation y = 0 437x + 84 991 (R = 0.9993) This proposed method was similar to 2000 times faster than conventional atomic force microscopy based clip-pen nanolithography in terms of the chip manufacturing process Additionally this method was 6 x 10(6) times more sensitive than enzyme-linked immunosorbent assay and exhibited a wide dynamic linear range (50 zM-1 fM) (C) 2010 Elsevier B V All rights reserved
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