The last decades of technical development and availability of protein and peptide microarrays have enabled large-scale profiling of antibodies and precise determination of their specificities through epitope mapping. This has enabled characterization of the human immune response and the produced antibodies. Beside exploring the auto-antibody repertoire, this approach also identifies key autoantigens targeted by the antibodies in e.g. neurodegenerative disorders...Read more

In an article in a special edition of Proteomics, on protein arrays researchers from the Human Protein Atlas describe the development of a novel assay concept, which combines the flexibility and multiplexing capacity of single-binder assays and the specificity and sensitivity aspects of dual-binder assays. They developed a multiplexed dual-binder assay procedure, which is based on a sequential protein capture.

– This assay is a great addition to the antibody-array toolbox of the Biobank Profiling Group, both to support related assay development activities and for biomarker discovery applications, says Burcu Ayoglu, first author of the study...Read more

Exploration of high-density protein microarrays for antibody validation and autoimmunity profiling

Protein fragments are used within the Human Protein Atlas project for the generation of antibodies, these fragments have also been utilized for the validation of the antibodies on antigen microarrays.

All antibodies produced by the Human Protein Atlas have been validated for target recognition on antigen microarrays comprising of their target antigen and 383 other protein fragments. In total over 42.000 protein fragments have been arranged in sets of 384...Read more