Understanding the temporal codes of intra-cellular signals.

Understanding the temporal codes of intra-cellular signals.
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DOI:
10.1016/j.gde.2010.09.007
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发表时间:
2010-12
影响因子:
4
通讯作者:
Hoffmann, Alexander
Hoffmann, Alexander
中科院分区:
生物学2区
文献类型:
--
作者:
Behar, Marcelo;Hoffmann, Alexander

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生物体和细胞的健康取决于对各种内部和外部线索、刺激或挑战的适当反应,例如激素或细胞因子水平的变化,或暴露于病原体。细胞反应必须根据刺激的特性和强度进行调整,因此细胞内信号必须携带有关两者的信息。然而,信号介质往往形成复杂的网络,对多种刺激作出反应,但设法产生刺激特异性反应。信号节点的多功能性(“功能多效性”)表明,生物网络已经进化出通过共享通道传递生理相关刺激信息的方式。越来越多的证据支持这样的观点,即这部分是通过信号介质活动的时间调节来实现的。目前的挑战是识别代表给定刺激信息的时间活动轮廓的特征,并了解细胞如何读取时间代码来控制它们的反应。
The health of organisms and cells depends on appropriate responses to diverse internal and external cues, stimuli, or challenges, such as changes in hormone or cytokine levels, or exposure to a pathogen. Cellular responses must be tailored to the identity and intensity of the stimulus and therefore intracellular signals must carry information about both. However, signaling mediators often form intricate networks that react to multiple stimuli yet manage to produce stimulus-specific responses. The multi-functionality (“functional pleiotropism”) of signaling nodes suggests that biological networks have evolved ways of passing physiologically relevant stimulus information through shared channels. Increasing evidence supports the notion that this is achieved in part through temporal regulation of signaling mediators’ activities. The present challenge is to identify the features of temporal activity profile that represent information about a given stimulus and understand how cells read the temporal codes to control their responses.
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