Exact(4)
We defined these budding ECs as tip cells, because we confirmed that they eventually became tip cells.
The ECs showing sustained Ca2+ oscillations eventually became tip cells (18/18, Figure 4 figure supplement 2).
An EC maintaining Ca2+ oscillations became tip cell (green arrowheads), whereas an EC losing Ca2+ oscillations stayed in the DA (magenta arrowheads).
While expression of NLS-mC alone neither affect tip, stalk, nor DA cells, the cells expressing both Vegfr2-ΔC and NLS-mC rarely became tip and stalk cells and remained in the DA.
Similar(56)
During angiogenesis, some vascular endothelial cells (VECs) in the originally quiescent vessels are induced to become tip cells.
Ca2+ oscillations are restricted to single or two neighboring ECs just after vessel sprouting and then further restricted to single ECs that eventually become tip cells.
According to the current model, when pro-angiogenic signals stimulate a quiescent vessel, ECs that experience the highest level of VEGFA-VEGFR2 signaling become tip cells.
This molecule binds to receptor proteins to activate a range of signaling processes that stimulate endothelial cells to become tip cells, and so encourage the formation of new sprouts.
They spot opportunities before they become tipping points.
Overnight, he became the tip of an unbending Giuliani spear aimed at the museum, seeking to cajole, browbeat and threaten the 190-year-old organization into removing the work of art.
In the present study, we focused on the stage of ECs budding from the DA and observed that even two cells showing Ca2+ oscillations budded from the DA and that one of them finally became single tip cell.
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