"In one instance, the chlorotoxin illuminated a clump of just 200 malignant cells that were burrowed deep within a wad of fat."
Washington, July 7 - In what can alter the course of cancer treatment in the near future, researchers have found a compound that appears to pinpoint all of the malignant cells in a patient's body.
The twist is that the compound's main ingredient is a molecule that is found in the sting of a deadly scorpion.
The compound called chlorotoxin is found in the venom of the death stalker scorpion known as leiurus quinquestriatus.
It gives malignant cells a bright fluorescent sheen so surgeons can easily spot them, wired.com reported.
A scorpion-venom concoction that makes tumours glow sounded almost too outlandish to be true in the beginning. But with generous donations from individuals, the fluorescent scorpion toxin is now in Phase I clinical trials, informed Jim Olson from the renowned Seattle-based Fred Hutchinson Cancer Research Centre that developed the technique, called Tumour Paint.
Scorpion venoms are cocktails of numerous individual toxins that attack different targets within a victim's body.
Olson and his team found that chlorotoxin did not attach just to brain tumours -- it grabbed onto all sorts of cancers, from those that affect the skin to those that destroy the lungs.
In lab experiments, Olson began to inject fluorescent-tipped chlorotoxin into mice -- the compound lit up cancer cells that no other technology could identify.
In one instance, the chlorotoxin illuminated a clump of just 200 malignant cells that were burrowed deep within a wad of fat.
That was the point we learned that the technology was far more sensitive than an MRI, Olson was quoted as saying.