Membrane extraction in native lipid nanodiscs reveals dynamic regulation of Cdc42 complexes during cell polarization
Membrane extraction in native lipid nanodiscs reveals dynamic regulation of Cdc42 complexes during cell polarization
复制标题
天然脂质纳米盘中的膜提取揭示了细胞极化过程中 Cdc42 复合物的动态调节
DOI:
10.1016/j.bpj.2023.11.021
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发表时间:
2023
影响因子:
3.4
通讯作者:
Dickinson, Daniel J.
中科院分区:
文献类型:
--
作者:
Deutz, Lars N.;Sarıkaya, Sena;Dickinson, Daniel J.
Embryonic development requires the establishment of cell polarity to enable cell fate segregation and tissue morphogenesis. This process is regulated by Par complex proteins, which partition into polarized membrane domains and direct downstream polarized cell behaviors. The kinase aPKC (along with its cofactor Par6) is a key member of this network and can be recruited to the plasma membrane by either the small GTPase Cdc42 or the scaffolding protein Par3. Although in vitro interactions among these proteins are well established, much is still unknown about the complexes they form during development. Here, to enable the study of membrane-associated complexes ex vivo, we used a maleic acid copolymer to rapidly isolate membrane proteins from singleC. eleganszygotes into lipid nanodiscs. We show that native lipid nanodisc formation enables detection of endogenous complexes involving Cdc42, which are undetectable when cells are lysed in detergent. We found that Cdc42 interacts more strongly with aPKC/Par6 during polarity maintenance than polarity establishment, two developmental stages that are separated by only a few minutes. We further show that Cdc42 and Par3 do not bind aPKC/Par6 simultaneously, confirming recent in vitro findings in an ex vivo context. Our findings establish a new tool for studying membrane-associated signaling complexes and reveal an unexpected mode of polarity regulation via Cdc42.
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影响因子:
11.8
作者:
Dickinson DJ;Schwager F;Pintard L;Gotta M;Goldstein B
通讯作者:
Goldstein B
影响因子:
3.7
作者:
Schwarz J;Proff J;Hävemeier A;Ladwein M;Rottner K;Barlag B;Pich A;Tatge H;Just I;Gerhard R
通讯作者:
Gerhard R
影响因子:
4.6
作者:
Jennifer L. Watts;Bijan Etemad-Moghadam;Su Guo;Lynn Boyd;Bruce W. Draper;Craig C. Mello;J. Priess;K. Kemphues
通讯作者:
Jennifer L. Watts;Bijan Etemad-Moghadam;Su Guo;Lynn Boyd;Bruce W. Draper;Craig C. Mello;J. Priess;K. Kemphues
影响因子:
2.7
作者:
Aceto, Donato;Beers, Melissa;Kemphues, Kenneth J.
通讯作者:
Kemphues, Kenneth J.
DOI:
10.1242/dev.125.18.3607
发表时间:
1998
期刊:
Development (Cambridge, England)
影响因子:
--
作者:
Tabuse,Y;Izumi,Y;Piano,F;Kemphues,KJ;Miwa,J;Ohno,S
通讯作者:
Ohno,S