Vertical Scanning Interferometry for Label-Free Detection of Peptide-Antibody Interactions.

ABSTRACT: Peptide microarrays are a fast-developing field enabling the mapping of linear epitopes in the immune response to vaccinations or diseases and high throughput studying of protein-protein interactions. In this respect, a rapid label-free measurement of protein layer topographies in the array format is of great interest but is also a great challenge due to the extremely low aspect ratios of the peptide spots. We have demonstrated the potential of vertical scanning interferometry (VSI) for a detailed morphological analysis of peptide arrays and binding antibodies. The VSI technique is shown to scan an array area of 5.1 square millimeters within 3⁻4 min at a resolution of 1.4 μm lateral and 0.1 nm vertical in the full automation mode. Topographies obtained by VSI do match the one obtained by A

SUBMITTER: Palermo A 

PROVIDER: S-EPMC6631817 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature