Rab35 governs apicobasal polarity through regulation of actin dynamics during sprouting angiogenesis.
Rab35 governs apicobasal polarity through regulation of actin dynamics during sprouting angiogenesis.
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DOI:
10.1038/s41467-022-32853-5
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发表时间:
2022-09-08
影响因子:
16.6
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中科院分区:
文献类型:
--
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In early blood vessel development, trafficking programs, such as those using Rab GTPases, are tasked with delivering vesicular cargo with high spatiotemporal accuracy. However, the function of many Rab trafficking proteins remain ill-defined in endothelial tissue; therefore, their relevance to blood vessel development is unknown. Rab35 has been shown to play an enigmatic role in cellular behaviors which differs greatly between tissue-type and organism. Importantly, Rab35 has never been characterized for its potential contribution in sprouting angiogenesis; thus, our goal was to map Rab35’s primary function in angiogenesis. Our results demonstrate that Rab35 is critical for sprout formation; in its absence, apicobasal polarity is entirely lost in vitro and in vivo. To determine mechanism, we systematically explored established Rab35 effectors and show that none are operative in endothelial cells. However, we find that Rab35 partners with DENNd1c, an evolutionarily divergent guanine exchange factor, to localize to actin. Here, Rab35 regulates actin polymerization through limiting Rac1 and RhoA activity, which is required to set up proper apicobasal polarity during sprout formation. Our findings establish that Rab35 is a potent brake of actin remodeling during blood vessel development. The promiscuous GTPase Rab35 has been shown to be involved in many important cellular functions. In this article, Francis et al. illustrate how Rab35 acts as a critical brake to actin remodeling during sprouting angiogenesis and how it is necessary for proper blood vessel development.
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影响因子:
20.1
作者:
Barry DM;Koo Y;Norden PR;Wylie LA;Xu K;Wichaidit C;Azizoglu DB;Zheng Y;Cobb MH;Davis GE;Cleaver O
通讯作者:
Cleaver O
DOI:
10.1083/jcb.201501081
发表时间:
2015-04-13
期刊:
The Journal of cell biology
影响因子:
--
作者:
Barry DJ;Durkin CH;Abella JV;Way M
通讯作者:
Way M
影响因子:
21.3
作者:
Gebala V;Collins R;Geudens I;Phng LK;Gerhardt H
通讯作者:
Gerhardt H
影响因子:
33.6
作者:
Hutagalung AH;Novick PJ
通讯作者:
Novick PJ
DOI:
10.1074/jbc.m116.773333
发表时间:
2017-07-14
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Biesemann A;Gorontzi A;Barr F;Gerke V
通讯作者:
Gerke V