Setting up and exploitation of a nano/technological platform for the evaluation of HMGA1b protein in peripheral blood of cancer patients.

ABSTRACT

Even if cancer specific biomarkers are present in peripheral blood of cancer patients, it is very difficult to detect them with conventional technology because of their low concentration. A potential cancer biomarker is the HMGA1b protein, whose overexpression is a feature of several human malignant neoplasias. By taking advantage of the surface plasmon resonance (SPR) phenomenon, we realized a specific nano/technology-based assay for cancer detection. More in details, anti-HMGA1b monoclonal antibodies, whose affinity was previously defined by ELISA, were immobilized onto metallic surfaces to develop a direct SPR-based assay. After having analyzed blood samples from colorectal cancer patients and healthy people for the presence of HMGA1b, we observed a 2-fold increase of the HMGA1b levels in the blood of cancer patients with respect to the healthy control people. We conclude that the set-up technology might allow to detect a tumoral mass through the evaluation of HMGA1b protein blood levels.