Chemoattractant signaling in dictyostelium: adaptation and amplification.

Chemoattractant signaling in dictyostelium: adaptation and amplification.
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DOI:
10.1126/scisignal.2002897
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发表时间:
2012-02-28
期刊:
影响因子:
7.3
通讯作者:
Iglesias PA
Iglesias PA
中科院分区:
生物学1区
文献类型:
--
作者:
Iglesias PA

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社会变形虫Dictyosteelium discoideum长期以来被证明是研究细胞如何感知和解释趋化梯度的强大模式生物。由于在其对化学引诱物的反应中观察到的丰富行为,以及所涉及的信号通路的复杂性质,这项研究吸引了理论模型的使用并从中受益。最近的定量实验支持一个流行的模型:局部激发,全局抑制(LEGI)机制的梯度传感。在这里,我们讨论这些发现,并提出一些重要的开放问题。
The social amoebae Dictyostelium discoideum has long proved a powerful model organism for studying how cells sense and interpret chemoattractant gradients. Because of the rich behavior observed in its response to chemoattractants, as well as the complex nature of the signaling pathways involved, this research has attracted and benefited from the use of theoretical models. Recent quantitative experiments provide support for a popular model: the Local Excitation, Global Inhibition (LEGI) mechanism of gradient sensing. Here, we discuss these findings and suggest some important open problems.
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