Intact class I HLA/peptide complexes are shed by cancer cells, representing a potential relevant cancer biomarker. Utilizing label-free sensor technology and T-cell receptor mimicking monoclonal antibodies, detection of shed MIF/HLA-A*02:01 complexes in MDA-MB-231 cell supernatants, spiked human serum, and patient plasma is demonstrated, enabling development of a novel cancer diagnostic platform.
Weidanz, J. A., Doll, K. L., Mohana-Sundaram, S., Wichner, T., Lowe, D. B., Gimlin, S., Wawro Weidanz, D., Magnusson, R., Hawkins, O. E. Detection of Human Leukocyte Antigen Biomarkers in Breast Cancer Utilizing Label-free Biosensor Technology. J. Vis. Exp. (97), e52159, doi:10.3791/52159 (2015).