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Self-assembling nanoparticle could improve MRI scanning for cancer diagnosis
Date:7/16/2014

at detecting smaller tumours in the early stages", added Professor Long.

The newly designed nanoparticle provides a tool to improve the sensitivity of MRI scanning, and the scientists are now working to enhance its effectiveness. Professor Long said: "We would like to improve the design to make it even easier for doctors to spot a tumour and for surgeons to then operate on it. We're now trying to add an extra optical signal so that the nanoparticle would light up with a luminescent probe once it had found its target, so combined with the better MRI signal it will make it even easier to identify tumours."

Before testing and injecting the non-toxic nanoparticle into mice, the scientists had to make sure that it would not become so big when it self-assembled that it would cause damage. They injected the nanoparticle into a saline solution inside a petri dish and monitored its growth over a four hour period. The nanoparticle grew from 100 to 800 nanometres still small enough to not cause any harm.

The scientists are now improving the nanoparticle and hope to test their design in a human trial within the next three to five years.

Dr Juan Gallo from the Department of Surgery and Cancer at Imperial College London said: "We're now looking at fine tuning the size of the final nanoparticle so that it is even smaller but still gives an enhanced MRI image. If it is too small the body will just secrete it out before imaging, but too big and it could be harmful to the body. Getting it just right is really important before moving to a human trial."


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Contact: Gail Wilson
gail.wilson@imperial.ac.uk
44-020-759-46702
Imperial College London
Source:Eurekalert

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