Bone Morphogenetic Protein 2 (BMP-2) [192] and a bone forming peptide [191] have been used for the functionalization of cellulose and Poly(lactide-co-glycolic acid) electrospun fibers for bone regeneration, while heparin [197] has been loaded onto Poly(L-lactide-co-caprolactone) fibers for cardiovascular application (stents for aneurysm treatment). The gene discussed is BMP2; the disease is aneurysm.