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Milchram L, Soldo R, Regele V, Schönthaler S, Degeorgi M, Baumgartner S, Kopp E, Weinhäusel A. A novel click chemistry-based peptide ELISA protocol: development and technical evaluation. Biotechniques 2022; 72:134-142. [PMID: 35234537 DOI: 10.2144/btn-2021-0107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
ELISA is the current standard for (auto)antibody diagnostics. Once established, ELISA protocols can be easily adapted for novel antigens; however, peptide-based protocols are rarely available. Herein the authors describe the results of a technical investigation of an indirect ELISA protocol using peptides conjugated onto a protein carrier based on click chemistry and immobilized in standard plastics. The authors compared this approach with the common biotin-avidin system and obtained a slightly improved limit of detection for purified IgG of 25-100 ng/well compared with 25-1000 ng/well. Reproducibility and stability of the methodological approach were conducted for further technical characterization. Indirect ELISA using immunoreactive peptides conjugated to bovine serum albumin offers a reliable method that is complementary to standard plastics and plate readers.
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Affiliation(s)
- Lisa Milchram
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Regina Soldo
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Valerie Regele
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Silvia Schönthaler
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Markus Degeorgi
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Sophie Baumgartner
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Elena Kopp
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
| | - Andreas Weinhäusel
- Competence Unit Molecular Diagnostics, Center for Health and Bioresources, Austrian Institute of Technology, Giefinggasse 4, Vienna, 1210, Austria
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