Abstract
In this paper, a novel disposable immunosensor for the detection of α-fetoprotein (AFP) based on the Indium tin oxide (ITO) modified by the sequential electro-deposition of the nanogold particles (nano-Au) and prussian blue (PB) is described. The ITO is employed to reduce the cost, instead of expensive gold electrode, glassy carbon electrode or platinum electrode. The layer-by-layer (LBL) electro-deposition of the nano-Au, PB is used for blocking the possible leakage from the substrate electrode surface and to prevent shedding of composite membrane. Under optimal conditions, the proposed immunosensor displays a broad linear response to AFP, the working range being 0·25 to 300·0 ng mL−1 with a detection limit of 0·04 ng mL−1. The studied immunosensor exhibits high sensitivity, fast analytical time and good stability. The proposed methodology is potentially attractive for clinical immunoassays.
Similar content being viewed by others
References
Li T-X 2001 Modern clinical immunoassay (Beijing: Military Medical Science Press)
Bader D, Riskin A, Vafsi O, Tamir A, Peskin B, Israsel N, Merksamer R, Dar H and David M 2004 Clin. Chim. Acta 349 15
Chuang L, Hwang J-Y, Chang H-C, Chang F-M and Jong S-B 2004 Clin. Chim. Acta 348 87
Stefanova I and Horsjsi V 1988 J. Immunol. Met. 111 67
Bisceglie A, Sterling R, Chung R, Everhart J, Dienstag J and Bonkovsky H 2005 J. Hepatol. 43 434
Fu Z-F, Hao C, Fei X-Q and Ju H-X 2006 J. Immunol. Methods 312 61
Chen C-H, Huang G-T, Yang P-M, Chen P-J, Lai M-Y, Chen D-S, Wang J-D and Sheu J-C 2006 Eur. J. Cancer 42 2524
Wang Y-Y, Luo J, Zhu M-W, Liu L-N and Ma X 2006 Inter. J. Gynecol. Obstet. 94 67
Matsuya T, Tashiro S, Hoshino N, Shibata N, Nagasaki Y and Kataoka K 2003 Anal. Chem. 75 6124
Wang G-L, Yuan J-L, Gong B-L, Matsumoto K and Hu Z-D 2001 Anal. Chim. Acta 448 165
Belanger L, Sylvestre C and Dufour D 1973 Clin. Chim. Acta 48 15
Aguilar Z P, Vandaveer W R and Fritsch I 2002 Anal. Chem. 74 3321
Wang J 2006 Biosens. Bioelectron. 21 1887
Calvo E J, Danilowicz C and Lagier C M 2004 Biosens. Bioelectron. 19 1219
Zacco E, Pividori M I and Llopis X 2004 J. Immunol. Methods 286 35
Hayashi K, Iwasaki Y, Horiuchi T, Sunagawa K and Tate A 2005 Anal. Chem. 77 5236
Zhang J-D, Kambayashi M and Oyama M 2005 Electroanalysis 17 408
Sun X-H and Gillis K D 2006 Anal. Chem. 78 2521
Tominaga M, Kumagai T, Takita S and Taniguchi I 1993 Chem. Lett. 22 1771
Qiu H-B, Yan J-L, Sun X-H, Liu J-F, Cao W-D, Yang X-R and Wang E-K 2003 Anal. Chem. 75 5435
Zheng D, Wang N, Wang F-Q, Dong D, Li Y-G, Yang X-Q, Guo L-H and Cheng J 2004 Anal. Chim. Acta 508 225
Zhan W, Alvarez J and Crooks R M 2002 J. Am. Chem. Soc. 124 13265
Chen Z-P, Jiang J-H, Shen G-L and Yu R-Q 2005 Anal. Chim. Acta 553 190
Enustun B V and Turkevich J J 1963 J. Am. Chem. Soc. 85 3317
Ferri T, Poscia A and Santucci R 1998 Bioelectrochem. Bioenerg. 44 177
Corry B, Uilk J and Crawley C 2003 Anal. Chim. Acta 496 103
Markovich I and Mandler D 2001 J. Electroanal. Chem. 500 453
Ruach-Nir I, Bendikov T, Doron-Mor I, Barkay Z, Vaskevich A and Rubinstein I 2007 J. Am. Chem. Soc. 129 84
Cui X-L, Jiang D-L, Diao P, Li J-X, Tong R-T and Wang X-K 1999 J. Electroanal. Chem. 470 9
Foschini C R, Souza D P F, Paulin Filho P I and Varela A 2001 J. Eur. Ceram. Soc. 21 1143
Sundfors F, Bobacka J, Ivaska A and Lewenstam A 2002 Electrochim. Acta 47 2245
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Li, Y., Liang, WB., Fang, LC. et al. Disposable amperometric immunosensor based on layer-by-layer electro-depositing of the nanogold particles, prussian blue-modified indium tin oxide for determination of α-fetoprotein. J Chem Sci 121, 1069–1076 (2009). https://doi.org/10.1007/s12039-009-0121-9
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12039-009-0121-9