TIE2 is a receptor-like tyrosine kinase expressed almost exclusively in endothelial cells and early hemopoietic cells and required for the normal development of vascular structures during embryogenesis. We report the identification of a secreted ligand for TIE2, termed Angiopoietin-1, using a novel expression cloning technique that involves intracellular trapping and detection of the ligand in ...

Vascular endothelial growth factor (VEGF), which acts via members of a family of endothelial-specific receptor tyrosine kinases, is the only factor that has been shown definitively to play a role in the formation of the embryonic vasculature. Only one other family of receptor tyrosine kinases, comprising TIE1 and TIE2, is largely endothelial cell specific. We have recently cloned a ligand for T...

background: one of the promising methods in fertility preservation among women with cancer is cryopreservation of ovarian cortex but there are many drawbacks such as apoptosis and considerable reduction of follicular density in the transplanted ovary. one solution to reduce ischemic damage is enhancing angiogenesis after transplantation of ovarian cortex tissue. objective: the aim of this study...