Pulsatile Hormonal Signaling to Extracellular Signal-regulated Kinase
Pulsatile Hormonal Signaling to Extracellular Signal-regulated Kinase
复制标题
细胞外信号调节激酶的脉冲激素信号传导
DOI:
--
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发表时间:
2014
影响因子:
4.8
通讯作者:
C. McArdle
中科院分区:
文献类型:
--
作者:
R. M. Perrett;M. Voliotis;S. P. Armstrong;R. Fowkes;G. R. Pope;K. Tsaneva;C. McArdle
Background: Cellular decoding of stimulus dynamics is poorly understood. Results: GnRH pulses activate ERK, and response kinetics determine sensitivity to different pulse features. Conclusion: The system is sensitive to pulse frequency but robust to width; this distinction develops through the cascade and is dictated by response kinetics. Significance: We describe mathematical and biochemical “design features” for pulsatile hormonal signaling. Gonadotropin-releasing hormone (GnRH) is secreted in brief pulses that stimulate synthesis and secretion of pituitary gonadotropin hormones and thereby mediate control of reproduction. It acts via G-protein-coupled receptors to stimulate effectors, including ERK. Information could be encoded in GnRH pulse frequency, width, amplitude, or other features of pulse shape, but the relative importance of these features is unknown. Here we examine this using automated fluorescence microscopy and mathematical modeling, focusing on ERK signaling. The simplest scenario is one in which the system is linear, and response dynamics are relatively fast (compared with the signal dynamics). In this case integrated system output (ERK activation or ERK-driven transcription) will be roughly proportional to integrated input, but we find that this is not the case. Notably, we find that relatively slow response kinetics lead to ERK activity beyond the GnRH pulse, and this reduces sensitivity to pulse width. More generally, we show that the slowing of response kinetics through the signaling cascade creates a system that is robust to pulse width. We, therefore, show how various levels of response kinetics synergize to dictate system sensitivity to different features of pulsatile hormone input. We reveal the mathematical and biochemical basis of a dynamic GnRH signaling system that is robust to changes in pulse amplitude and width but is sensitive to changes in receptor occupancy and frequency, precisely the features that are tightly regulated and exploited to exert physiological control in vivo.
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DOI:
10.1210/en.2002-220973
发表时间:
2003
期刊:
Endocrinology.
影响因子:
--
作者:
Padmanabhan,Vasantha;Brown,MortonB;Dahl,GeoffreyE;Evans,NeilP;Karsch,FredJ;Mauger,DavidT;Neill,JimmyD;VanCleeff,Judith
通讯作者:
VanCleeff,Judith
DOI:
10.1016/b978-0-12-571141-8.50015-9
发表时间:
1985
期刊:
Recent progress in hormone research
影响因子:
--
作者:
CrowleyJr,WF;Filicori,M;Spratt,DI;Santoro,NF
通讯作者:
Santoro,NF
DOI:
10.1210/endo.139.7.6091
发表时间:
1998
期刊:
Endocrinology.
影响因子:
--
作者:
Haisenleder,DJ;Cox,ME;Parsons,SJ;Marshall,JC
通讯作者:
Marshall,JC
影响因子:
--
作者:
Bliss, Stuart P.;Miller, Andrew;Roberson, Mark S.
通讯作者:
Roberson, Mark S.
影响因子:
4.1
作者:
O'Byrne,KT;Chen,MD;Nishihara,M;Williams,CL;Thalabard,JC;Hotchkiss,J;Knobil,E
通讯作者:
Knobil,E