Delaying Gal4-driven gene expression in the zebrafish with morpholinos and Gal80.

Delaying Gal4-driven gene expression in the zebrafish with morpholinos and Gal80.
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DOI:
10.1371/journal.pone.0016587
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发表时间:
2011-01-26
期刊:
影响因子:
3.7
通讯作者:
López-Schier H
López-Schier H
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Faucherre A;López-Schier H

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模块化Gal 4/UAS基因表达系统已成为现代生物学中不可或缺的工具。在斑马鱼中的几个大规模的基因和增强子陷阱筛选已经产生了数百个以独特模式表达Gal 4的转基因品系。然而,Gal 4的早期胚胎表达严重限制了它们在再生或行为研究中的应用,因为UAS驱动的效应子可能会破坏正常的器官发生。为了克服这一限制,我们探索了使用的Gal 4阻遏Gal 80在瞬时测定和稳定的转基因暂时控制Gal 4活性。我们还验证了使用靶向Gal 4的吗啉代延迟Gal 4驱动的基因表达的策略。第一种方法限于表达天然Gal 4的转基因。该morphant方法也可应用于表达Gal 4-VP 16融合蛋白的转基因系。它有望成为延迟Gal 4驱动的转基因表达和增强斑马鱼遗传工具包的标准方法。
The modular Gal4/UAS gene expression system has become an indispensable tool in modern biology. Several large-scale gene- and enhancer-trap screens in the zebrafish have generated hundreds of transgenic lines expressing Gal4 in unique patterns. However, the early embryonic expression of the Gal4 severely limits their use for studies on regeneration or behavior because UAS-driven effectors could disrupt normal organogenesis. To overcome this limitation, we explored the use of the Gal4 repressor Gal80 in transient assays and with stable transgenes to temporally control Gal4 activity. We also validated a strategy to delay Gal4-driven gene expression using a morpholino targeted to Gal4. The first approach is limited to transgenes expressing the native Gal4. The morphant approach can also be applied to transgenic lines expressing the Gal4-VP16 fusion protein. It promises to become a standard approach to delay Gal4-driven transgene expression and enhance the genetic toolkit for the zebrafish.
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