Two distinct types of neuronal asymmetries are controlled by the Caenorhabditis elegans zinc finger transcription factor die-1.

Two distinct types of neuronal asymmetries are controlled by the Caenorhabditis elegans zinc finger transcription factor die-1.
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DOI:
10.1101/gad.233643.113
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发表时间:
2014-01-01
影响因子:
10.5
通讯作者:
Hobert O
Hobert O
中科院分区:
生物学1区
文献类型:
--
作者:
Cochella L;Tursun B;Hsieh YW;Galindo S;Johnston RJ;Chuang CF;Hobert O

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身体的左/右不对称特征要么随机分布在人群的左侧或右侧(反对称),要么发现在一个特定的侧面(方向不对称)。神经系统表现出这两种类型的不对称性,但尚不清楚是否共享监管机构建立它们。在这里,Cochella等人表明,转录因子die-1控制C.优雅的。这项研究揭示了两种不同的身体平面不对称性之间的第一个分子联系。动物的左/右不对称特征随机分布在群体内的左侧或右侧(“反对称”),或者在动物的一个特定侧面上刻板地发现(“方向不对称”)。这两种类型的不对称都可以在神经系统中找到,但建立这些不对称的调节程序是否具有任何机制特征尚不清楚。在这里,我们描述了一个前所未有的分子之间的联系,这两种类型的不对称性秀丽隐杆线虫。锌指转录因子die-1在味觉神经元对ASE left(ASEL)和ASE right(ASER)中以方向不对称的方式表达,而在嗅觉神经元对AWC left(AWCL)和AWC right(AWCR)中以反对称的方式表达。在这两个神经元对中,不对称的die-1表达以根本不同的方式控制。重要的是,不对称die-1表达控制ASE神经元中味觉受体蛋白的定向不对称表达和AWC神经元中嗅觉受体蛋白的反对称表达。这些不对称性有助于提高动物区分不同化学感觉输入的能力。
Left/right asymmetric features of the body are either randomly distributed on either the left or right side within a population (antisymmetries) or found on one particular side (directional asymmetries). Nervous systems display both types of asymmetries, but it is unknown whether shared regulators establish them. Here, Cochella et al. show that the transcription factor die-1 controls both antisymmetry and directional asymmetry in distinct sensory systems in C. elegans. This study uncovers the first molecular link between two different kinds of body plan asymmetries. Left/right asymmetric features of animals are either randomly distributed on either the left or right side within a population (“antisymmetries”) or found stereotypically on one particular side of an animal (“directional asymmetries”). Both types of asymmetries can be found in nervous systems, but whether the regulatory programs that establish these asymmetries share any mechanistic features is not known. We describe here an unprecedented molecular link between these two types of asymmetries in Caenorhabditis elegans. The zinc finger transcription factor die-1 is expressed in a directionally asymmetric manner in the gustatory neuron pair ASE left (ASEL) and ASE right (ASER), while it is expressed in an antisymmetric manner in the olfactory neuron pair AWC left (AWCL) and AWC right (AWCR). Asymmetric die-1 expression is controlled in a fundamentally distinct manner in these two neuron pairs. Importantly, asymmetric die-1 expression controls the directionally asymmetric expression of gustatory receptor proteins in the ASE neurons and the antisymmetric expression of olfactory receptor proteins in the AWC neurons. These asymmetries serve to increase the ability of the animal to discriminate distinct chemosensory inputs.
DOI: 10.1016/j.cub.2009.05.043
发表时间: 2009-06-23
期刊: Current biology : CB
影响因子: --
作者:
Ortiz CO;Faumont S;Takayama J;Ahmed HK;Goldsmith AD;Pocock R;McCormick KE;Kunimoto H;Iino Y;Lockery S;Hobert O
通讯作者: Hobert O
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发表时间: 2001-04-20
期刊: CELL
影响因子: 64.5
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DOI: 10.1242/dev.02494
发表时间: 2006-09-01
期刊: DEVELOPMENT
影响因子: 4.6
作者:
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