1
|
Lassabe G, Rossotti M, González-Techera A, González-Sapienza G. Shiga-like toxin B subunit of Escherichia coli as scaffold for high-avidity display of anti-immunocomplex peptides. Anal Chem 2014; 86:5541-6. [PMID: 24797274 PMCID: PMC4045326 DOI: 10.1021/ac500926f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
![]()
Small
compounds cannot bind simultaneously to two antibodies, and
thus, their immunodetection is limited to competitive formats in which
the analyte is indirectly quantitated by measuring the unoccupied
antibody binding sites using a competing reporter. This limitation
can be circumvented by using phage-borne peptides selected for their
ability to specifically react with the analyte–antibody immunocomplex,
which allows the detection of these small molecules in a noncompetitive
format (PHAIA) with increased sensitivity and a positive readout.
In an effort to find substitutes for the phage particles in PHAIA,
we explore the use of the B subunit of the Shiga-like toxin of Escherichia coli, also known as verotoxin (VTX),
as a scaffold for multivalent display of anti-immunocomplex peptides.
Using the herbicides molinate and clomazone as model compounds, we
built peptide–VTX recombinant chimeras that were produced in
the periplasmic space of E. coli as
soluble pentamers, as confirmed by multiangle light scattering analysis.
These multivalent constructs, which we termed nanopeptamers, were
conjugated to a tracer enzyme and used to detect the herbicide–antibody
complex in an ELISA format. The VTX–nanopeptamer assays performed
with over a 10-fold increased sensitivity and excellent recovery from
spiked surface and mineral water samples. The carbon black-labeled
peptide–VTX nanopeptamers showed great potential for the development
of a lateral-flow test for small molecules with a visual positive
readout that allowed the detection of up to 2.5 ng/mL of clomazone.
Collapse
Affiliation(s)
- Gabriel Lassabe
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UDELAR , Montevideo, Uruguay
| | | | | | | |
Collapse
|
2
|
Liang X, Ni H, Beier RC, Dong Y, Li J, Luo X, Zhang S, Shen J, Wang Z. Highly Broad-Specific and Sensitive Enzyme-Linked Immunosorbent Assay for Screening Sulfonamides: Assay Optimization and Application to Milk Samples. FOOD ANAL METHOD 2014. [DOI: 10.1007/s12161-014-9845-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
3
|
Zhao J, Yu X, Luo Q, Wei C, Ke C, Zuo H, Yang X, Yuan J. Anti-bensulfuron methyl monoclonal antibody production and BSM-detecting indirect competitive enzyme-linked immunoassay establishment. FOOD AGR IMMUNOL 2013. [DOI: 10.1080/09540105.2013.797385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
|
4
|
Vanrell L, Gonzalez-Techera A, Hammock BD, Gonzalez-Sapienza G. Nanopeptamers for the development of small-analyte lateral flow tests with a positive readout. Anal Chem 2013; 85:1177-82. [PMID: 23214940 PMCID: PMC3904493 DOI: 10.1021/ac3031114] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
There is a great demand for rapid tests that can be used on-site for the detection of small analytes, such as pesticides, persistent organic pollutants, explosives, toxins, medicinal and abused drugs, hormones, etc. Dipsticks and lateral flow devices, which are simple and provide a visual readout, may be the answer, but the available technology for these compounds requires a competitive format that loses sensitivity and produces readings inversely proportional to the analyte concentration, which is counterintuitive and may lead to potential misinterpretation of the result. In this work, protein-multipeptide constructs composed of anti-immunocomplex peptides selected from phage libraries and streptavidin/avidin as core protein were used for direct detection of small compounds in a noncompetitive two-site immunoassay format that performs with increased sensitivity and positive readout. These constructs that we termed "nanopeptamers" allow the development of rapid point-of-use tests with a positive visual end point of easy interpretation. As proof of concept, lateral flow assays for the herbicides molinate and clomazone were developed and their performance was characterized with field samples.
Collapse
Affiliation(s)
- Lucía Vanrell
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UdelaR, Montevideo 11600, Uruguay
| | - Andrés Gonzalez-Techera
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UdelaR, Montevideo 11600, Uruguay
| | - Bruce D Hammock
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616, United States
| | | |
Collapse
|
5
|
Arévalo FJ, González-Techera A, Zon MA, González-Sapienza G, Fernández H. Ultra-sensitive electrochemical immunosensor using analyte peptidomimetics selected from phage display peptide libraries. Biosens Bioelectron 2012; 32:231-7. [DOI: 10.1016/j.bios.2011.12.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2011] [Revised: 12/08/2011] [Accepted: 12/13/2011] [Indexed: 11/27/2022]
|
6
|
Kim HJ, McCoy M, Gee SJ, González-Sapienza GG, Hammock BD. Noncompetitive phage anti-immunocomplex real-time polymerase chain reaction for sensitive detection of small molecules. Anal Chem 2011; 83:246-53. [PMID: 21141939 PMCID: PMC3031424 DOI: 10.1021/ac102353z] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Immuno polymerase chain reaction (IPCR) is an analytical technology based on the excellent affinity and specificity of antibodies combined with the powerful signal amplification of polymerase chain reaction (PCR), providing superior sensitivity to classical immunoassays. Here we present a novel type of IPCR termed phage anti-immunocomplex assay real-time PCR (PHAIA-PCR) for the detection of small molecules. Our method utilizes a phage anti-immunocomplex assay (PHAIA) technology in which a short peptide loop displayed on the surface of the M13 bacteriophage binds specifically to the antibody-analyte complex, allowing the noncompetitive detection of small analytes. The phagemid DNA encoding this peptide can be amplified by PCR, and thus, this method eliminates hapten functionalization or bioconjugation of a DNA template while providing improved sensitivity. As a proof of concept, two PHAIA-PCRs were developed for the detection of 3-phenoxybenzoic acid, a major urinary metabolite of some pyrethroid insecticides, and molinate, a herbicide implicated in fish kills. Our results demonstrate that phage DNA can be a versatile material for IPCR development, enabling universal amplification when the common element of the phagemid is targeted or specific amplification when the real time PCR probe is designed to anneal the DNA encoding the peptide. The PHAIA-PCRs proved to be 10-fold more sensitive than conventional PHAIA and significantly faster using magnetic beads for rapid separation of reactants. The assay was validated with both agricultural drain water and human urine samples, showing its robustness for rapid monitoring of human exposure or environmental contamination.
Collapse
Affiliation(s)
- Hee-Joo Kim
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616
| | - Mark McCoy
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616
| | - Shirley J. Gee
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616
| | - Gualberto G. González-Sapienza
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UDELAR, Av. A. Navarro 3051, piso 2, Montevideo 11600, Uruguay
| | - Bruce D. Hammock
- Department of Entomology and UCD Cancer Center, University of California, Davis, California 95616
| |
Collapse
|
7
|
Chen Y, Tang S, Ding S, He F, Xiao X. Monoclonal Antibody-Based Immunoassay for the Detection of Maduramicin in Chicken Tissues. ANAL LETT 2009. [DOI: 10.1080/00032710903201966] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
8
|
González-Techera A, Umpiérrez-Failache M, Cardozo S, Obal G, Pritsch O, Last JA, Gee SJ, Hammock BD, González-Sapienza G. High-throughput method for ranking the affinity of peptide ligands selected from phage display libraries. Bioconjug Chem 2008; 19:993-1000. [PMID: 18393454 DOI: 10.1021/bc700279y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The use of phage display peptide libraries allows rapid isolation of peptide ligands for any target selector molecule. However, due to differences in peptide expression and the heterogeneity of the phage preparations, there is no easy way to compare the binding properties of the selected clones, which operates as a major "bottleneck" of the technology. Here, we present the development of a new type of library that allows rapid comparison of the relative affinity of the selected peptides in a high-throughput screening format. As a model system, a phage display peptide library constructed on a phagemid vector that contains the bacterial alkaline phosphatase gene (BAP) was selected with an antiherbicide antibody. Due to the intrinsic switching capacity of the library, the selected peptides were transferred "en masse" from the phage coat protein to BAP. This was coupled to an optimized affinity ELISA where normalized amounts of the peptide-BAP fusion allow direct comparison of the binding properties of hundreds of peptide ligands. The system was validated by plasmon surface resonance experiments using synthetic peptides, showing that the method discriminates among the affinities of the peptides within 3 orders of magnitude. In addition, the peptide-BAP protein can find direct application as a tracer reagent.
Collapse
Affiliation(s)
- A González-Techera
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, and Departamento de Inmunobiología, Facultad de Medicina, UDELAR, Montevideo, Uruguay
| | | | | | | | | | | | | | | | | |
Collapse
|
9
|
González-Techera A, Vanrell L, Last J, Hammock B, González-Sapienza G. Phage anti-immune complex assay: general strategy for noncompetitive immunodetection of small molecules. Anal Chem 2007; 79:7799-806. [PMID: 17845007 PMCID: PMC2519879 DOI: 10.1021/ac071323h] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Due to their size, small molecules cannot be simultaneously bound by two antibodies, precluding their detection by noncompetitive two-site immunoassays, which are superior to competitive ones in terms of sensitivity, kinetics, and working range. This has prompted the development of anti-immune complex antibodies, but these are difficult to produce, and often exhibit high cross-reactivity with the unliganded primary antibody. This work demonstrates that anti-immune complex antibodies can be substituted by phage particles isolated from phage display peptide libraries. Phages bearing specific small peptide loops allowed to focus the recognition to changes in the binding area of the immune complex. The concept was tested using environmental and drug analytes; with improved sensitivity and ready adaptation into on-site formats. Peptides specific for different immune complexes can be isolated from different peptide libraries in a simple and systematic fashion allowing the rapid development of noncompetitive assays for small molecules.
Collapse
Affiliation(s)
- A González-Techera
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UDELAR, Montevideo, Uruguay
| | - L Vanrell
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UDELAR, Montevideo, Uruguay
| | - J. Last
- Pulmonary/Critical Care Medicine, School of Medicine, University of California, Davis, CA, USA
| | - B.D Hammock
- Department of Entomology and Cancer Research Center, University of California, Davis, CA, USA
| | - G. González-Sapienza
- Cátedra de Inmunología, Facultad de Química, Instituto de Higiene, UDELAR, Montevideo, Uruguay
- Corresponding author. Av. A. Navarro 3051, piso 2. 11600 Montevideo, Uruguay, , tel (5982) 4874334
| |
Collapse
|
10
|
Screening water for pollutants using biological techniques under European Union funding during the last 10 years. Trends Analyt Chem 2005. [DOI: 10.1016/j.trac.2005.03.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
11
|
Cardozo S, González-Techera A, Last JA, Hammock BD, Kramer K, González-Sapienza GG. Analyte peptidomimetics selected from phage display peptide libraries: a systematic strategy for the development of environmental immunoassays. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2005; 39:4234-41. [PMID: 15984805 DOI: 10.1021/es047931l] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Due to their simplicity, speed, low cost, and specificity, immunoassays have become a useful tool for the analysis of environmental pollutants. Once the anti-hapten antibodies are produced, the same hapten or a related molecule is conjugated to a tracer enzyme or coating protein to set up the assay. Here we report the use of peptides that mimic the analyte as advantageous substitutes of competing haptens. These peptides, which open opportunities for innovation in the development of tracer reagents, can be selected from phage display libraries in a straightforward systematic manner. The concept was proven using assays for the herbicides molinate and atrazine as model systems. Several characteristics of the selection process that may affect the final assay were analyzed, such as the phage coat proteins fused to the peptide, the use of linear or constrained peptide libraries, the effect of the concentration of analyte used during the selection process, and the use of monoclonal or polyclonal antibodies as selector molecules. In all cases we found that the selected peptides performed with improved sensitivity as compared with the chemical hapten conventional assays, showing an analogous cross-reactivity pattern. Interestingly, the phage particles perform as robust and highly standardized assay reagents, and due to their filamentous repetitive structure, they function as sensitive multienzymatic reporters.
Collapse
Affiliation(s)
- Soledad Cardozo
- Facultad de Química, Instituto de Higiene, UDELAR, Av. A. Navarro 3051, piso 2, Montevideo 11600, Uruguay
| | | | | | | | | | | |
Collapse
|
12
|
|