The invention provides a method of selectively pro-oranti-angiogenic treatment of a mammalian subject, comprising site-specific control of alternative splicing during processing of VEGF pre-mRNA transcribed from the C terminal exon 8 of the VEGF gene using controlling agents for the splicing, wherein one or more controlling agent which favors proximal splice site (PSS) splicing in said processing is used in the pro-angiogenic treatment and one or more controlling agent which favors distal splice site (DSS) splicing in said processing is used in the anti-angiogenic treatment.