Embryonic vascular system undergoes a series of complex, highly regulated series of events involving differentiation, migration and association of primitive endothelial cells.
This process is termed vasculogenesis.
A further remodeling of the primitive vascular system forms the mature cardiovascular system.
This process is known as angiogenesis (sprouting of new capillary vessels from pre-existing vasculature).
A family of receptor tyrosine kinases TIE1 and TIE 2 or Tek has been identified in vascular endothelium and hematopoietic cells.
Mice lacking TIE 1 or TIE 2 are lethal.
Ties may represent the earliest endothelial cell lineage marker and may regulate the endothelial cell proliferation, differentiation, and proper patterning during vasculogenesis.
TIEs appear to be acting downstream of the VEGFRs.
Tie-1 (human 1138 AA; mouse 1134 aa) is a type 1 membrane receptor protein specifically expressed in developing vascular endothelial cells.
Tie-1 extracellular portion (25-279 aa) contains 3 fibronectin type III-like and 2 Ig-like C2-type, and 3-EGF-like domains.
Applications:Suitable for use in Western Blot and ELISA.