Knockdown of klf6a impairs junction remodeling and rearrangement of actin cytoskeleton in CV pruning.(A) and (B) Time-lapse live imaging of junction remodeling and actin cytoskeleton dynamics in CV pruning in Tg(Fliep:Lifeact-EGFP);KI(cdh5-mRFP) embryos. (A) Control embryo shows a retraction of junction (white arrowhead) and a shrinkage of its junctional ring (white and blue arrowheads) as multicellular tube became stenotic. F-actin forms at cdh5-positive junction (white, blue and yellow arrowheads), and undergoes a similar rearrangement as cdh5-positve junctions. 7 vascular loops are taken time-lapse live imaging. Scale bar: 25 μm. (B) Although klf6a morphant show F-actin co-localization with junction, however, neither junction nor F-actin does not go through remodeling (arrowhead). 5 vascular loops are taken time-lapse live imaging. Scale bar: 25 μm.
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