Gene therapy is the introduction of genetic material into a patient's cells resulting in a cure or a therapeutic effect. In recent years, it has been shown that gene therapy is a promising technology to treat or even cure several fatal diseases for which there is no attractive alternative therapy. Gene therapy can be used for hereditary diseases, but also for other diseases that affect heart, brain and even for cancer. Indeed, recent results suggest that gene therapy can be beneficial for patients suffering from aggressive brain cancer that would otherwise be lethal.
A safe delivery of the genes?
Despite the overall progress, there is still a need to develop improved and safer approaches to deliver genes into cells. The success of gene therapy ultimately depends on these gene delivery vehicles or vectors. Most vectors have been derived from virusses that can be tailor-made to deliver therapeutic genes into the patients' cells. However, some of these viral vectors can induce side-effects, including cancer and inflammation.
Marinee Chuah, Thierry VandenDriessche, Eyayu Belay and their fellow VIB researchers at K.U. Leuven in collaboration with Zsuzsanna Iszvak and Zoltan Ivics and colleagues at the Max Delbrck Center in Berlin (Germany) have now developed a new non-viral approach that overcomes some of the limitations associated with viral vectors.
Lessons from evolution
Using the principles of evolution and natural selection, that were initially conceived by Charles Darwin, they have now developped an efficient and safe gene delivery approach based on non-viral genetic elements, called transposons. Transposons are mobile DNA elements that can integrate into 'foreign' DNA via a 'cut-and-paste' mechanism. In a way they are natural gene delivery vehicles. The researchers constructed the transposons in such a way that they can carry the therapeutic gene into the target cell DNA. Doing so,
|Contact: Sooike Stoops|
VIB (the Flanders Institute for Biotechnology)