A novel piggyBac transposon inducible expression system identifies a role for AKT signalling in primordial germ cell migration.

A novel piggyBac transposon inducible expression system identifies a role for AKT signalling in primordial germ cell migration.
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DOI:
10.1371/journal.pone.0077222
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
McGrew MJ
McGrew MJ
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Glover JD;Taylor L;Sherman A;Zeiger-Poli C;Sang HM;McGrew MJ

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在这项工作中,我们描述了一个单一的piggyBac转座子系统,同时含有一个tet激活剂和强力霉素诱导的表达盒。我们证明,基因产物可以有条件地表达从整合的转座子和第二个基因可以同时靶向的短发夹RNA内的转座子,在体内和哺乳动物和鸟类细胞系。我们应用该系统在体外稳定修饰鸡原始生殖细胞(PGC)系,并在特定发育阶段将转座子修饰的生殖细胞注射到鸡胚胎中后诱导报告基因。我们用这个载体表达一个组成型活性AKT分子在PGC迁移到形成性腺。我们发现,PGC迁移延迟,细胞不能殖民形成性腺。因此,正确的AKT激活水平对于早期胚胎发育期间的生殖细胞迁移至关重要。
In this work, we describe a single piggyBac transposon system containing both a tet-activator and a doxycycline-inducible expression cassette. We demonstrate that a gene product can be conditionally expressed from the integrated transposon and a second gene can be simultaneously targeted by a short hairpin RNA contained within the transposon, both in vivo and in mammalian and avian cell lines. We applied this system to stably modify chicken primordial germ cell (PGC) lines in vitro and induce a reporter gene at specific developmental stages after injection of the transposon-modified germ cells into chicken embryos. We used this vector to express a constitutively-active AKT molecule during PGC migration to the forming gonad. We found that PGC migration was retarded and cells could not colonise the forming gonad. Correct levels of AKT activation are thus essential for germ cell migration during early embryonic development.
DOI: 10.1371/journal.pone.0015518
发表时间: 2010-11-29
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影响因子: 3.7
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