Genetic dissection of plexin signaling in vivo
Genetic dissection of plexin signaling in vivo
复制标题
体内丛蛋白信号传导的基因剖析
DOI:
10.1073/pnas.1308418111
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Offermanns S
中科院分区:
文献类型:
--
作者:
Worzfeld T;Swiercz JM;Senturk A;Genz B;Korostylev A;Deng S;Xia J;Hoshino M;Epstein JA;Chan AM;Vollmar B;Acker-Palmer A;Kuner R;Offermanns S
Mammalian plexins constitute a family of transmembrane receptors for semaphorins and represent critical regulators of various processes during development of the nervous, cardiovascular, skeletal, and renal system. In vitro studies have shown that plexins exert their effects via an intracellular R-Ras/M-Ras GTPase-activating protein (GAP) domain or by activation of RhoA through interaction with Rho guanine nucleotide exchange factor proteins. However, which of these signaling pathways are relevant for plexin functions in vivo is largely unknown. Using an allelic series of transgenic mice, we show that the GAP domain of plexins constitutes their key signaling module during development. Mice in which endogenous Plexin-B2 or Plexin-D1 is replaced by transgenic versions harboring mutations in the GAP domain recapitulate the phenotypes of the respective null mutants in the developing nervous, vascular, and skeletal system. We further provide genetic evidence that, unexpectedly, the GAP domain-mediated developmental functions of plexins are not brought about via R-Ras and M-Ras inactivation. In contrast to the GAP domain mutants, Plexin-B2 transgenic mice defective in Rho guanine nucleotide exchange factor binding are viable and fertile but exhibit abnormal development of the liver vasculature. Our genetic analyses uncover the in vivo context-dependence and functional specificity of individual plexin-mediated signaling pathways during development.
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影响因子:
50.3
作者:
Sawada J;Urakami T;Li F;Urakami A;Zhu W;Fukuda M;Li DY;Ruoslahti E;Komatsu M
通讯作者:
Komatsu M
影响因子:
25
作者:
Toyofuku, T;Yoshida, J;Kikutani, H
通讯作者:
Kikutani, H
影响因子:
10.5
作者:
Kim, Jiha;Oh, Won-Jong;Gu, Chenghua
通讯作者:
Gu, Chenghua
DOI:
--
发表时间:
2009
期刊:
Development 誌 136
影响因子:
--
作者:
藤山知之;他12名
通讯作者:
他12名
影响因子:
7.8
作者:
Oinuma, Izumi;Katoh, Hironori;Negishi, Manabu
通讯作者:
Negishi, Manabu