Multiplexed magnetic nanoparticle-antibody conjugates (MNPs-ABS) based prognostic detection of ovarian cancer biomarkers, CA-125, β-2M and ApoA1 using fluorescence spectroscopy with comparison of surface plasmon resonance (SPR) analysis

A multiplexed MNPs-Abs based fluorescence spectroscopic system in analysis of serum biomarkers; CA-125, β2-M and ApoA1 for the early detection of ovarian cancer was first time proposed. The lowest detection limits measured in multiplexed setup were 0.26 U/mL, 0.55 ng/mL and 7.7 ng/mL respectively for CA-125, β2-M and ApoA1. A comparative real sample analysis of healthy normal (Control), benign and ovarian cancer patients with SPR has also been done to validate the process. Moreover CA-125 detection only confirms 50-60% of early stage disease. This multiplexed system achieved sensitivity and specificity up to 94% and 98% respectively to distinguish early stage ovarian cancer patients from healthy individuals.