The present invention, in some embodiments thereof, relates to methods of producing adenoviruses such as pro- and anti-angiogenic adenovirus vectors and preparations generated thereby. Particularly, in some embodiments, the viral vectors comprise a heterologous pro- or anti-angiogenic gene under the transcriptional control of the murine pre-proendothelin promoter (e.g. PPE-1-3X), for targeted expression of in angiogenic endothelium.
