Retraction to: Gene Therapy (2006) 13, 1714–1723. doi:10.1038/sj.gt.3302808

This paper is withdrawn with the consent of the authors as it contains material that cannot be verified as the results of the original experiments. Photomicrographs and images of blots and gels were manipulated in such a way that their veracity is compromised.

In addition, the figures were further manipulated and presented as the results of other experiments in completely different gene targets in a paper published in another journal.

The authors would like to apologise for this retraction.