摘要翻译:
我们研究一种机制,以稳健地识别一个发展中的生物系统的中心。我们假设存在两个形态发生梯度,一个激活因子来自前部,另一个共同阻遏因子来自后部。共阻遏子抑制激活子打开靶基因的作用。我们将这个系统应用于果蝇胚胎,在那里我们预测了一个迄今未被发现的后部共阻遏物的存在。通过数学建模,我们发现一个对称的激活子-共阻遏子模型可以定量地解释驼背基因在胚胎中期的精确表达边界,以及这种模式随胚胎大小的比例变化。
---
英文标题:
《Finding the center reliably: robust patterns of developmental gene
expression》
---
作者:
Martin Howard and Pieter Rein ten Wolde
---
最新提交年份:
2005
---
分类信息:
一级分类:Quantitative Biology 数量生物学
二级分类:Tissues and Organs 组织器官
分类描述:Blood flow in vessels, biomechanics of bones, electrical waves, endocrine system, tumor growth
血管内血流,骨骼生物力学,电波,内分泌系统,肿瘤生长
--
一级分类:Physics 物理学
二级分类:Other Condensed Matter 其他凝聚态物质
分类描述:Work in condensed matter that does not fit into the other cond-mat classifications
在不适合其他cond-mat分类的凝聚态物质中工作
--
一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
--
一级分类:Quantitative Biology 数量生物学
二级分类:Other Quantitative Biology 其他定量生物学
分类描述:Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
--
---
英文摘要:
We investigate a mechanism for the robust identification of the center of a developing biological system. We assume the existence of two morphogen gradients, an activator emanating from the anterior, and a co-repressor from the posterior. The co-repressor inhibits the action of the activator in switching on target genes. We apply this system to Drosophila embryos, where we predict the existence of a hitherto undetected posterior co-repressor. Using mathematical modelling, we show that a symmetric activator-co-repressor model can quantitatively explain the precise mid-embryo expression boundary of the hunchback gene, and the scaling of this pattern with embryo size.
---
PDF链接:
https://arxiv.org/pdf/q-bio/0511011