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Regulatory Logic of Pan-Neuronal Gene Expression in C-elegans

机译:C-线虫泛神经基因表达的调控逻辑。

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While neuronal cell types display an astounding degree of phenotypic diversity, most if not all neuron types share a core panel of terminal features. However, little is known about how pan-neuronal expression patterns are genetically programmed. Through an extensive analysis of the cis-regulatory control regions of a battery of pan-neuronal C. elegans genes, including genes involved in synaptic vesicle biology and neuropeptide signaling, we define a common organizational principle in the regulation of pan-neuronal genes in the form of a surprisingly complex array of seemingly redundant, parallel-acting cis-regulatory modules that direct expression to broad, overlapping domains throughout the nervous system. These parallel-acting cis-regulatory modules are responsive to a multitude of distinct trans-acting factors. Neuronal gene expression programs therefore fall into two fundamentally distinct classes. Neuron-type-specific genes are generally controlled by discrete and non-redundantly acting regulatory inputs, while pan-neuronal gene expression is controlled by diverse, coincident and seemingly redundant regulatory inputs.
机译:虽然神经元细胞类型表现出惊人的表型多样性,但大多数(如果不是全部)神经元类型共享终端特征的核心面板。但是,关于泛神经元表达模式如何遗传编程知之甚少。通过广泛分析一系列泛神经线虫基因(包括与突触囊泡生物学和神经肽信号传导有关的基因)的顺式调控区域,我们定义了调控泛神经元基因的共同组织原理。形式的惊人复杂的看似冗余的,平行作用的顺式调控模块,可将表达引导至整个神经系统的广泛重叠域。这些平行作用的顺式调节模块对多种不同的反式作用因子作出响应。因此,神经元基因表达程序分为两个基本不同的类别。神经元类型特异性基因通常由离散的和非冗余作用的调控输入控制,而泛神经元基因的表达则受多种,一致且看似冗余的调控输入控制。

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