The present invention relates to methods and compositions for treatment of cardiovascular and peripheral vascular diseases using ex vivo and in vivo gene delivery technologies. One aspect of the present invention relates to a method for treating a vascular disease by introducing a DNA sequence encoding a TM protein or its variant into a segment of a blood vessel ex vivo using a gutless adenovirus vector. Another aspect of the present invention is to provide a gutless adenovirus vector carrying a transgene, such as a gene encoding TM protein or its variant.