Immobilising of anti-HPV18 and E. coli O157:H7 antibodies on magnetic silica-coated Fe<div style="display : inline; font-size:xx-small;">3</div>O<div style="display : inline; font-size:xx-small;">4</div> for early diagnosis of cervical cancer and diarrhoe

This paper presents the synthesis and properties of magnetic silica-coated FeO nanoparticles. Uncoated FeO nanoparticles with an average diameter of 9-16 nm and saturation magnetisation of around 66 emu/g were first prepared by co-precipitation method. After being coated by SiO using the sol-gel method, the diameters of the coated particles ranged from 29 nm to 230 nm and their corresponding saturation magnetisation was reduced to 29 emu/g. The magnetic coated nanoparticles were attached to the monoclonal antibodies of HPV18 and E. coli O157:H7. The TG/DTA analyses indicated that antibodies were attached to the magnetic nanoparticles. The obtained results revealed that magnetic SiO-coated FeO nanoparticles can be a promising candidate for the diagnosis of cervical cancer at an early stage with high accuracy.

Keywords: magnetic nanoparticles, diagnostics, uterocervical cancer, E coli, monoclonal antibodies, escherichia coli, cervical cancer, diarrhoea, cancer diagnosis, sol-gel, nanotechnology