Classification of protein profiles from antibody microarrays using heat and detergent treatment.
2011 (English)In: New Biotechnology, ISSN 1871-6784, Vol. 29, no 5, 564-570 p.Article in journal (Refereed) Published
Antibody microarrays offer new opportunities for exploring the proteome and to identify biomarker candidates in human serum and plasma. Here, we have investigated the effect of heat and detergents on an antibody-based suspension bead array (SBA) assay using polyclonal antibodies and biotinylated plasma samples. With protein profiles from more than 2300 antibodies generated in 384-plex antibody SBAs, three major classes of heat and detergent susceptibility could be described. The results show that washing of the beads with SDS (rather than Tween) after target binding lowered intensity levels of basically all profiles and that about 50% of the profiles appeared to be lowered to a similar extent by heating of the sample. About 33% of the profiles appeared to be insensitive to heat treatment while another 17% showed a positive influence of heat to yield elevated profiles. The results suggest that the classification of antibodies is driven by the molecular properties of the antibody-antigen interaction and can generally not be predicted based on protein class or Western blot data. The experimental scheme presented here can be used to systematically categorize antibodies and thereby combine antibodies with similar properties into targeted arrays for analysis of plasma and serum.
Place, publisher, year, edition, pages
2011. Vol. 29, no 5, 564-570 p.
IdentifiersURN: urn:nbn:se:kth:diva-52450DOI: 10.1016/j.nbt.2011.10.005ISI: 000305606500008PubMedID: 22023822ScopusID: 2-s2.0-84862011672OAI: oai:DiVA.org:kth-52450DiVA: diva2:466666
FunderScience for Life Laboratory - a national resource center for high-throughput molecular bioscience
QC 201112162011-12-162011-12-162013-02-08Bibliographically approved