DeltaA mRNA and protein distribution in the zebrafish nervous system.

DeltaA mRNA and protein distribution in the zebrafish nervous system.
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DOI:
10.1002/dvdy.22136
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发表时间:
2009-12
影响因子:
2.5
通讯作者:
Eisen, Judith S.
Eisen, Judith S.
中科院分区:
生物学3区
文献类型:
--
作者:
Tallafuss, Alexandra;Trepman, Alissa;Eisen, Judith S.

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跨膜蛋白Delta和Notch之间的物理相互作用只允许一部分神经前体成为神经元,并调节神经发育的其他方面。为了研究神经发育过程中Delta蛋白的定位,我们产生了斑马鱼DeltaA(Dla)的特异性抗体。在这里,我们首次描述了Dla蛋白在细胞皮层和/或膜上的亚细胞定位,支持Dla在直接细胞间通讯中的功能。原位RNA杂交和免疫组化显示动态,协调表达模式的dla mRNA和Dla蛋白在发育和成年斑马鱼神经系统。Dla表达主要被排除在分化的神经元之外,并且至少在幼虫阶段之前维持在推定的前体细胞中。在成人脑中,dla mRNA和Dla蛋白在通常与干细胞相关的增殖区中表达。
Physical interaction between the transmembrane proteins Delta and Notch allows only a subset of neural precursors to become neurons, as well as regulating other aspects of neural development. To examine the localization of Delta protein during neural development, we generated an antibody specific to zebrafish DeltaA (Dla). Here we describe for the first time the subcellular localization of Dla protein in distinct puncta at cell cortex and/or membrane, supporting the function of Dla in direct cell-cell communication. In situ RNA hybridization and immunohistochemistry revealed dynamic, coordinated expression patterns of dla mRNA and Dla protein in the developing and adult zebrafish nervous system. Dla expression is mostly excluded from differentiated neurons and is maintained in putative precursor cells at least until larval stages. In the adult brain, dla mRNA and Dla protein are expressed in proliferative zones normally associated with stem cells.
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