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Nanotechnology to fight cancer with light-activated drug delivery system

Posted by :rogersd923

Nanotechnology has proved to be very fruitful in discovering new technologies and applications to cure life threatening diseases such as cancer, AIDS, tuberculosis, etc. The latest method of treatment “light-activated drug delivery system” lets the doctor control the path of the drug and also the location where the drug needs to act. With the help of light-activated method, researchers can target cancer cells without affecting the other healthy cells.


The method uses nanoparticles, which are so small in size that they are compatible with the size of the cells, which enables them to carry cancer curing drug and drop them at the right spot when activated by the two-photon laser.


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The light-activated drug delivery carries nanoparticle to the targeted area, they are fluorescent in color and can be tracked from outside of the body.


This new technology of therapy along with diagnostics is known as theranostics. The ability to strike only the targeted cancer cells reduces the chances of effecting cells surrounding the area. This technology will help to cure cancer without affecting other parts of the body and leaving no side effect of the treatment.


The study of the drug delivery system which can be activated by using a source of light which have the ability to penetrate through the tissue. Researchers have developed a new type of nanoparticle which is capable of absorbing energy from the light.


These new nanoparticles are made of silica, they have more than thousand pours in them, in which they carry the cancer curing drug. To secure the drug from leaking, their end is capped with nanovalves.


The nanovalves present in the nanorobots is actually the light reactor. They contain special molecules which when receives any two-photon light opens up the valve and releases the drug carrier.


The method has been tested and it has been proved successful to react on breast cancer cell. The nanorobots can receive light only within 4cm of the tissue, hence the cells which are close to skin area is best to receive treatment. Due to their fluorescent body the nanobot can be traced with the help of molecular imaging techniques. To continue this experiment on nanotechnology application, National Institutes of Health and the French American Cultural Exchange - Partner University Fund (FACE-PUF) is providing funds for the research.

Tag(s) : nanotechnology cancer research, fight cancer, drug delivery system, nanomedicine, ,    

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