Identifying network motifs that buffer front-to-back signaling in polarized neutrophils.
Identifying network motifs that buffer front-to-back signaling in polarized neutrophils.
复制标题
识别缓冲极化中性粒细胞中前后信号传导的网络基序。
DOI:
10.1016/j.celrep.2013.04.009
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发表时间:
2013
期刊:
影响因子:
8.8
通讯作者:
Altschuler,StevenJ
中科院分区:
文献类型:
--
作者:
Wang,Yanqin;Ku,Chin-Jen;Zhang,ElizabethR;Artyukhin,AlexanderB;Weiner,OrionD;Wu,LaniF;Altschuler,StevenJ
Neutrophil polarity relies on local, mutual inhibition to segregate incompatible signaling circuits to the leading and trailing edges. Mutual inhibition alone should lead to cells having strong fronts and weak backs or vice versa. However, analysis of cell-to-cell variation in human neutrophils revealed that back polarity remains consistent despite changes in front strength. How is this buffering achieved? Pharmacological perturbations and mathematical modeling revealed a functional role for microtubules in buffering back polarity by mediating positive, long-range crosstalk from front to back; loss of microtubules inhibits buffering and results in anticorrelation between front and back signaling. Furthermore, a systematic, computational search of network topologies found that a long-range, positive front-to-back link is necessary for back buffering. Our studies suggest a design principle that can be employed by polarity networks: short-range mutual inhibition establishes distinct signaling regions, after which directed long-range activation insulates one region from variations in the other.
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影响因子:
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作者:
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通讯作者:
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影响因子:
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作者:
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DOI:
--
发表时间:
2011
期刊:
--
影响因子:
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作者:
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通讯作者:
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