Quelle: Ten Dijke Arthur 2007 Seite(n): 863, Zeilen: figure caption
In sprouting angiogenesis, endothelial cells proliferate behind the tip cell of a growing branch in response to cytokines, such as VEGF, and lumens can form by vacuole fusion. Both forms of angiogenesis require the recruitment of smooth muscle cells (SMCs) to stabilize the nascent vessels.
Fig. 7 – Representation of
vasculogenesis and two types of
angiogenesis: intussusceptive and
sprouting angiogenesis.
Vasculogenesis involves the
differentiation of endothelial cells
(ECs) from precursor angioblast cells
to form a primitive plexus of
capillaries, which remodel and grow
by angiogenesis. Intussusceptive
angiogenesis involves the splitting and
growing of vessels in situ. Vessel
splitting occurs by the formation of
translumen pillars (arrowheads) but
the molecular mechanisms are not well
understood74.
74. Risau W. Mechanisms of angiogenesis. Nature. 1997;386:671-674.
Figure 3 TGFβ signalling in vasculogenesis and angiogenesis. Vasculogenesis and
two types of angiogenesis are shown: intussusceptive and sprouting angiogenesis (BOX 1).
Vasculogenesis involves the differentiation of endothelial cells (ECs) from precursor
angioblast cells to form a primitive plexus of capillaries, which remodel and grow by
angiogenesis. Intussusceptive angiogenesis involves the splitting and growing of vessels
in situ in a metabolically efficient manner, and is found, for example, in the developing
yolk sac and lung. Vessel splitting occurs by the formation of translumen pillars
(arrowheads) but the molecular mechanisms are not well understood. In sprouting
angiogenesis, endothelial cells proliferate behind the tip cell of a growing branch in
response to cytokines such as vascular endothelial growth factor (VEGF) and lumens can
form by vacuole fusion. Both forms of angiogenesis require the recruitment of smooth
muscle cells (SMCs) to stabilize the nascent vessels.
Anmerkungen
The source is not mentioned here. Risau (1997) does not contain the copied material.