Characterization of a new Gsx2-cre line in the developing mouse telencephalon.

Characterization of a new Gsx2-cre line in the developing mouse telencephalon.
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DOI:
10.1002/dvg.22980
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发表时间:
2016-10
期刊:
影响因子:
1.5
通讯作者:
Campbell, Kenneth
Campbell, Kenneth
中科院分区:
生物学4区
文献类型:
--
作者:
Qin, Shenyue;Madhavan, Mayur;Waclaw, Ronald R.;Nakafuku, Masato;Campbell, Kenneth

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在本研究中,我们利用同源盒基因Gsx2(原Gsh2)上游的两个假定的顺式调控模块(即hs687和hs678)构建了一个驱动Cre和EGFP表达的转基因小鼠系,Gsx2是建立外侧神经节隆起(LGE)身份的关键基因。这两种CRMs的结合驱动沿前后神经轴的内源性Gsx2表达域内的转基因表达。通过将该转基因系与RosatdTomato (Ai14)报告小鼠系杂交,我们在侧腹端脑,即LGE和内侧GE (MGE)的背侧半部分观察到一种独特的重组模式,但在中隔没有。我们发现来自这些胚胎区域的许多细胞类型都有强大的重组,包括来自LGE的嗅球(OB)和杏仁核中间神经元和纹状体投射神经元,以及来自MGE和尾侧GE (CGE)的皮质中间神经元。总之,该转基因小鼠系为LGE/CGE和MGE后半部分的遗传操作提供了新的工具。
In this study, we generated a transgenic mouse line driving Cre and EGFP expression with two putative cis-regulatory modules (CRMs) (i.e. hs687 and hs678) upstream of the homeobox gene Gsx2 (formerly Gsh2), a critical gene for establishing lateral ganglionic eminence (LGE) identity. The combination of these two CRMs drives transgene expression within the endogenous Gsx2 expression domains along the anterior-posterior neuraxis. By crossing this transgenic line with the RosatdTomato (Ai14) reporter mouse line, we observed a unique recombination pattern in the lateral ventral telencephalon, namely the LGE and the dorsal half of the medial GE (MGE), but not in the septum. We found robust recombination in many cell types derived from these embryonic regions, including olfactory bulb (OB) and amygdala interneurons and striatal projection neurons from the LGE, as well as cortical interneurons from the MGE and caudal GE (CGE). In summary, this transgenic mouse line represents a new tool for genetic manipulation in the LGE/CGE and the dorsal half of MGE.
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