|
|
|
![]() Other Issues: |
|
||||||
Constitutive expression of hypoxia-inducible factor-1
(HIF-1
) in skin produces a nonleaky hypervascularity. Shown here is an ear skin whole mount from a K14-HIF-1
ODD transgenic mouse expressing a mutant HIF-1
resistant to proteosomal degradation under the control of the keratin-14 promoter. The mouse was perfused with biotinylated Lysopersicon esculentum lectin to visualize the microvasculature following peroxidase staining. There is a doubling of vessel density in transgenic compared to nontransgenic skin. Despite a 13-fold induction of VEGF mRNA and a threefold increase in VEGF protein, the vasculature is resistant to leakage and the skin is not inflamed (For details, see Elson et al., p. 2520.)