Methods and compositions for cell-specific expression of genes are provided. The invention utilizes the endothelin-1 promoter and promoter elements to direct expression of heterologous genes in endothelial cells. The promoters and elements are useful for directing cell-specific expression of therapies...http://www.google.es/patents/US5288846?utm_source=gb-gplus-sharePatente US5288846 - Cell specific gene regulators