Nicotine is a tough addiction to kick. But what if you could prevent the addiction in the first place? Weill Cornell Medical College researchers say they prevented addiction in mice with a vaccine.

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In the journal Science Translational Medicine, the scientists describe how a single dose of their novel vaccine protects mice, over their lifetime, against nicotine addiction. The vaccine is designed to use the animal's liver as a factory to continuously produce antibodies that gobble up nicotine the moment it enters the bloodstream, preventing the chemical from reaching the brain and even the heart.

"As far as we can see, the best way to treat chronic nicotine addiction from smoking is to have these Pacman-like antibodies on patrol, clearing the blood as needed before nicotine can have any biological effect," says the study's lead investigator, Dr. Ronald G. Crystal , chairman and professor of Genetic Medicine at Weill Cornell Medical College.

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