The blood-brain barrier<\/a> (BBB) is a layer of cells that block most molecules from entering the brain in order to protect this sensitive organ from external invaders. It does its job so well that delivering treatments to the brain is extremely difficult and poses a great challenge to drug development.<\/p>\n <\/a><\/p>\n <\/p>\n <\/a><\/p>\n Researchers from the University of Nebraska Medical Center, the University of North Carolina, and Lomonosov Moscow State University in Russia have found a potential solution. In early 2013, these collaborators announced that they were successful in delivering an enzyme<\/a> to the site of cell<\/a> death within the brain of a mouse experiencing poor motor function characteristic of Parkinson’s disease<\/a>. The researchers accomplished targeted delivery through a method called Trojan therapy. This article will explain the concept of Trojan therapy, as well as its potential application for Huntington’s disease<\/a>.<\/span><\/p>\n