Express detection of nonylphenol in water samples by fluorescence polarization immunoassay

被引:34
作者
Yakovleva, JN
Lobanova, AY
Shutaleva, EA
Kourkina, MA
Mart'ianov, AA
Zherdev, AV
Dzantiev, BB
Eremin, SA [1 ]
机构
[1] Moscow MV Lomonosov State Univ, Fac Chem, Dept Chem Enzymol, Moscow 119992, Russia
[2] Russian Acad Sci, Inst Biochem, Moscow 119071, Russia
关键词
nonylphenol; endocrine-disrupting chemicals; antibody production; fluorescence polarization immunoassay; cross-reactivity;
D O I
10.1007/s00216-003-2307-1
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
The development of express method for detection of endocrine-disrupting chemicals (EDC) such as alkylphenols is required for ecological monitoring. Several attempts have been made to produce antibodies against 4-nonylphenol (NP) in recent years. This work describes the production of new antibodies against NP and also summarizes the characterization of antibodies obtained earlier. Three approaches used to produce alkylphenol-specific antibodies are compared; these are based on: 1. omega-(4-hydroxyphenyl)nonanoic or omega-(4-hydroxyphenyl)heptanoic acid NP derivatives designed to mimic the linear NP isomer; 2. 4-aminophenol, which potentially mimics various substituted phenolic compounds with different side-chain structures at position 4 of the benzene ring; and 3. a mixture of branched NP isomers, conjugated to the carrier protein via a benzene ring by the Mannich reaction, and expected to be the closest mimic of NP structure by preserving its natural alkyl moiety. Fluorescence polarization immunoassays based on different combinations of antibody and labeled antigen for screening detection of NP were developed and structural aspects of assay sensitivity and specificity were investigated. The assays based on the antisera raised against omega-(4-hydroxyphenyl)nonanoic acid and NP conjugate via Mannich reaction are capable of express detection of NP with detection limit of 7 mug mL(-1) and assay dynamic range of 18-300 mug mL(-1).
引用
收藏
页码:634 / 641
页数:8
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