Magnetic nano-particles

Using magnetic fields to carry anti-cancer drugs

Victoria University chemistry academic Dr Richard Tilley has developed tiny magnetic particles with potential use in medicine.

The magnetic nano-particles, which can be manufactured at room temperature, are based around a material with an extremely strong magnetic field. The surface chemistry enables specific binding of biological molecules and Viclink is currently investigating high value applications in the medical industry.

Magnetic nano-particles have already been used to improve kidney dialysis processes, biosensors and catalysts, in conjunction with microwaves to heat and kill tumour cells and remove harmful bacteria.

The potential to deliberately force magnetic nano-particles together, combined with the fact that magnetic fields penetrate human tissues without impediment, provides opportunities to allow nano-particles to carry and deliver packages, such as anti-cancer drugs or radionuclide atoms, to a targeted area of the human body. This could result in lower dosages, reduced side effects and lowered costs of treatment.

The magnetic nano-particles are protected by a New Zealand provisional patent and Dr Tilley also has a complementary patent in "quantum dots" which could be used in medical settings to replace heavy metal imaging agents. They could also be used for targeted drug delivery or high resolution imaging.

Viclink is seeking partners interested in investing in the further development of this technology.