Dab1 (Disable homolog-1) reelin adaptor protein is overexpressed in the olfactory bulb at early postnatal stages.

Dab1 (Disable homolog-1) reelin adaptor protein is overexpressed in the olfactory bulb at early postnatal stages.
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DOI:
10.1371/journal.pone.0026673
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
López-Mascaraque L
López-Mascaraque L
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Martín-López E;Blanchart A;De Carlos JA;López-Mascaraque L

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Dab1介导reelin信号传导,并在早期大脑发育中起关键作用,例如大脑中神经元的常规定位。嗅球经历了明显的分层重组,但在层组织上野生型和卷叶型之间没有明显的差异。因此,对这些分子进行准确的区域和细胞同时分析对于阐明Dab 1在Reelin效应中所发挥的作用至关重要。本研究揭示了一个强大的和一致的Dab1 mRNA和蛋白质的表达,在整个嗅球层在野生型和reeler小鼠。此外,值得注意的是Dab1在两种菌株的细胞核内的定位模式。此外,在两种品系中,从P0到P15检测到Dab1表达水平的时间增量,在reeler中的蛋白质量高于野生型小鼠。总之,我们的研究结果表明,Reln直接从投射神经元通过产生不同的Reln片段。Dab 1表达模式的变化可能反映了出生后和成年阶段的替代Reln功能,除了可能的调节Dab 1的其他分子不同的Reln。
Dab1 mediates reelin signalling and plays critical roles in early brain development such as the stereotypical positioning of neurons in the brain. The olfactory bulb undergoes a prominent layering reorganization, but shows not apparent differences between wild type and reeler in the layer organization. Therefore, an accurate regional and cellular simultaneous analysis of these molecules becomes essential to clarify the role played by Dab1 upon Reelin effect. The present study reveals a strong and consistent Dab1 mRNA and protein expressions, throughout the olfactory bulb layers in both wild type and reeler mice. In addition, noteworthy is the pattern of Dab1 location within cell nuclei in both strains. Furthermore, a temporal increment of Dab1 expression levels is detected from P0 to P15 in both strains, being the protein quantity higher in reeler than in wild type mice. Altogether, our results revealed that Reln acts directly from projection neurons via the production of different Reln fragments. Changes in the pattern of Dab1 expression could reflect an alternative Reln function in postnatal and adult stages, besides a possible regulation of Dab1 by other molecules distinct to Reln.
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影响因子: 11.1
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发表时间: 2004-08-06
影响因子: 4.8
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通讯作者: Herz, J