Light-activated lock could revolutionize drug delivery

Researchers at the University of Florida have just stumbled onto a remarkable discovery that could eventually "starve cancer tumors and prevent side effects from a wide range of drugs." The magic find? A "lock-like molecule" that clasps or unclasps based on exposure to light. Sure, we've seen our fair share of newfangled drug delivery tools, but none that have been this noninvasive or simple to activate. In tests, gurus found that they could use visible or ultraviolet light to open or close a clasp, letting blood flow or creating a clot; in theory, this could one day be used to "prevent the formation of tiny blood vessels that feed tumors."

Source: engadget.comAdded: 22 April 2009