A Single-Cell Biochemistry Approach Reveals PAR Complex Dynamics during Cell Polarization.
A Single-Cell Biochemistry Approach Reveals PAR Complex Dynamics during Cell Polarization.
复制标题
单细胞生物化学方法揭示了在细胞极化过程中PAR复杂的动力学。
DOI:
10.1016/j.devcel.2017.07.024
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发表时间:
2017-08-21
影响因子:
11.8
通讯作者:
Goldstein B
中科院分区:
文献类型:
--
作者:
Dickinson DJ;Schwager F;Pintard L;Gotta M;Goldstein B
Regulated protein-protein interactions are critical for cell signaling, differentiation and development. To study dynamic regulation of protein interactions in vivo, there is a need for techniques that can yield time-resolved information and probe multiple protein binding partners simultaneously, using small amounts of starting material. Here, we describe a single-cell protein interaction assay. Single-cell lysates are generated at defined timepoints and analyzed using single-molecule pull-down, yielding information about dynamic protein complex regulation in vivo. We established the utility of this approach by studying PAR polarity proteins, which mediate polarization of many animal cell types. We uncovered striking regulation of PAR complex composition and stoichiometry during C. elegans zygote polarization, which takes place in less than 20 minutes. PAR complex dynamics are linked to the cell cycle by polo-like kinase 1, and govern movement of PAR proteins to establish polarity. Our results demonstrate an approach to study dynamic biochemical events in vivo. Single-cell analysis is becoming increasingly important for cell biology. Dickinson et al. describe a single-cell assay for protein interactions, using microfluidic lysis and single-molecule pulldown. They apply this approach to show that PAR complex assembly is dynamic, and is linked to the cell cycle, during cell polarization in C. elegans.
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影响因子:
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通讯作者:
Seydoux G
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Smith, Hamilton O.
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Cheeks, RJ;Canman, JC;Goldstein, B
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Goldstein, B
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通讯作者:
Gadella, Theodorus W. J., Jr.