Microarrays based on affinity-tagged single-chain Fv antibodies: Sensitive detection of analyte in complex proteomes
(2005) In Proteomics 5(5). p.1281-1291- Abstract
- Protein-based microarrays are among the novel class of rapidly emerging proteomic technologies that will allow us to efficiently perform global proteome analysis. However, the process of designing adequate protein microarrays is a major inherent problem. In this study, we have evaluated a protein microarray platform based on nonpurified affinity-tagged single-chain (sc) Fv antibody fragments to generate proof-of-principle and to demonstrate the specificity and sensitivity of the array design. To this end, we used our human recombinant scFv antibody library genetically constructed around one framework, the n-CoDeR library containing 2 x 10(10) clones, as a source for our probes. The probes were immobilized via engineered C-terminal affinity... (More)
- Protein-based microarrays are among the novel class of rapidly emerging proteomic technologies that will allow us to efficiently perform global proteome analysis. However, the process of designing adequate protein microarrays is a major inherent problem. In this study, we have evaluated a protein microarray platform based on nonpurified affinity-tagged single-chain (sc) Fv antibody fragments to generate proof-of-principle and to demonstrate the specificity and sensitivity of the array design. To this end, we used our human recombinant scFv antibody library genetically constructed around one framework, the n-CoDeR library containing 2 x 10(10) clones, as a source for our probes. The probes were immobilized via engineered C-terminal affinity tags, his- or myc-tags, to either Ni2+-coated slides or anti-tag antibody coated substrates. The results showed that highly functional microarrays were generated and that nonpurified scFvs readily could be applied as probes. Specific and sensitive microarrays were obtained, providing a limit of detection in the pm to fM range, using fluorescence as the mode of detection. Further, the results showed that spotting the analyte on top of the arrayed probes, instead of incubating the array with large sample volumes (333 pL vs. 40 mu L), could reduce the amount of analyte required 4000 times, from 1200 attomole to 300 zeptomole. Finally, we showed that a highly complex proteome, such as human sera containing several thousand different proteins, could be directly fluorescently labeled and successfully analyzed without compromising the specificity and sensitivity of the antibody microarrays. This is a prerequisite for the design of high-density antibody arrays applied in high-throughput proteomics. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/152136
- author
- Wingren, Christer LU ; Steinhauer, Cornelia LU ; Ingvarsson, Johan LU ; Persson Sunde, Erik LU ; Larsson, K and Borrebaeck, Carl LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Proteomics
- volume
- 5
- issue
- 5
- pages
- 1281 - 1291
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000228221000011
- pmid:15732136
- scopus:17044414953
- ISSN
- 1615-9861
- DOI
- 10.1002/pmic.200401009
- language
- English
- LU publication?
- yes
- id
- a0e0ca60-df9e-4aba-9e67-7780a77978fe (old id 152136)
- date added to LUP
- 2016-04-01 12:21:53
- date last changed
- 2022-01-27 02:43:09
@article{a0e0ca60-df9e-4aba-9e67-7780a77978fe,
abstract = {{Protein-based microarrays are among the novel class of rapidly emerging proteomic technologies that will allow us to efficiently perform global proteome analysis. However, the process of designing adequate protein microarrays is a major inherent problem. In this study, we have evaluated a protein microarray platform based on nonpurified affinity-tagged single-chain (sc) Fv antibody fragments to generate proof-of-principle and to demonstrate the specificity and sensitivity of the array design. To this end, we used our human recombinant scFv antibody library genetically constructed around one framework, the n-CoDeR library containing 2 x 10(10) clones, as a source for our probes. The probes were immobilized via engineered C-terminal affinity tags, his- or myc-tags, to either Ni2+-coated slides or anti-tag antibody coated substrates. The results showed that highly functional microarrays were generated and that nonpurified scFvs readily could be applied as probes. Specific and sensitive microarrays were obtained, providing a limit of detection in the pm to fM range, using fluorescence as the mode of detection. Further, the results showed that spotting the analyte on top of the arrayed probes, instead of incubating the array with large sample volumes (333 pL vs. 40 mu L), could reduce the amount of analyte required 4000 times, from 1200 attomole to 300 zeptomole. Finally, we showed that a highly complex proteome, such as human sera containing several thousand different proteins, could be directly fluorescently labeled and successfully analyzed without compromising the specificity and sensitivity of the antibody microarrays. This is a prerequisite for the design of high-density antibody arrays applied in high-throughput proteomics.}},
author = {{Wingren, Christer and Steinhauer, Cornelia and Ingvarsson, Johan and Persson Sunde, Erik and Larsson, K and Borrebaeck, Carl}},
issn = {{1615-9861}},
language = {{eng}},
number = {{5}},
pages = {{1281--1291}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Proteomics}},
title = {{Microarrays based on affinity-tagged single-chain Fv antibodies: Sensitive detection of analyte in complex proteomes}},
url = {{http://dx.doi.org/10.1002/pmic.200401009}},
doi = {{10.1002/pmic.200401009}},
volume = {{5}},
year = {{2005}},
}