CASZ1 promotes vascular assembly and morphogenesis through the direct regulation of an EGFL7/RhoA-mediated pathway.
CASZ1 promotes vascular assembly and morphogenesis through the direct regulation of an EGFL7/RhoA-mediated pathway.
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DOI:
10.1016/j.devcel.2013.03.003
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发表时间:
2013-04-29
影响因子:
11.8
通讯作者:
Conlon, Frank L.
中科院分区:
文献类型:
--
作者:
Charpentier, Marta S.;Christine, Kathleen S.;Amin, Nirav M.;Dorr, Kerry M.;Kushner, Erich J.;Bautch, Victoria L.;Taylor, Joan M.;Conlon, Frank L.
The formation of the vascular system is essential for embryonic development and homeostasis. However, transcriptional control of this process is not fully understood. Here we report an evolutionarily conserved role for the transcription factor CASZ1 in blood vessel assembly and morphogenesis. In the absence of CASZ1, Xenopus embryos fail to develop a branched and lumenized vascular system, and CASZ1-depleted human endothelial cells display dramatic alterations in adhesion, morphology, and sprouting. Mechanistically, we show CASZ1 directly regulates Epidermal Growth Factor-Like Domain 7 (Egfl7). We further demonstrate that defects of CASZ1 or EGFL7-depleted cells are in part due to diminished RhoA expression and impaired focal adhesion localization. Moreover, these abnormal endothelial cell behaviors in CASZ1-depleted cells can be rescued by restoration of Egfl7. Collectively, these studies show CASZ1 is required to directly regulate a unique EGFL7/RhoA-mediated pathway to promote vertebrate vascular development.
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