Generation and characterization of Lhx9-GFPCreER(T2) knock-in mouse line.

Generation and characterization of Lhx9-GFPCreER(T2) knock-in mouse line.
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DOI:
10.1002/dvg.22805
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发表时间:
2014-09
期刊:
影响因子:
1.5
通讯作者:
Gan, Lin
Gan, Lin
中科院分区:
生物学4区
文献类型:
--
作者:
Balasubramanian, Revathi;Bui, Andrew;Xie, Xiaoling;Deng, Min;Gan, Lin

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LHX9 是一种 LIM 同源域转录因子,对于性腺、脊髓中间神经元和丘脑神经元等的发育至关重要。我们最近报道了发育过程中视网膜无长突细胞中 LHX9 的表达。在本研究中,我们通过在 Lhx9 基因座敲入 GCE 盒,从而灭活内源性 Lhx9,生成了 Lhx9 - GFPCreERT2 (GCE) 敲入小鼠系。 Lhx9GCE/+ 小鼠能够存活、具有生育能力,并且没有表现出明显的表型特征。 Lhx9GCE/GCE 小鼠表型均为雌性,体型较小,可存活,但不育。通过将 Lhx9-GCE 小鼠系与 Rosa26 - tdTomato 报告小鼠系杂交,验证了 Lhx9-GCE 小鼠系的特异性和功效,该小鼠系揭示了视网膜无长突细胞、发育中的四肢、睾丸、海马神经元、丘脑神经元和小脑神经元中的 Cre 重组酶活性。总而言之,Lhx9-GCE 小鼠品系可以作为谱系追踪和基因操作实验的有益工具。
LHX9 is a LIM-homeodomain transcription factor essential for the development of gonads, spinal cord interneurons, and thalamic neurons to name a few. We recently reported the expression of LHX9 in retinal amacrine cells during development. In this study, we generated an Lhx9 - GFPCreERT2 (GCE) knock-in mouse line by knocking-in a GCE cassette at the Lhx9 locus, thus inactivating endogenous Lhx9. Lhx9GCE/+ mice were viable, fertile, and displayed no overt phenotypical characteristics. Lhx9GCE/GCE mice were all phenotypically female, smaller in size, viable, but infertile. The specificity and efficacy of the Lhx9-GCE mouse line was verified by crossing it to a Rosa26 - tdTomato reporter mouse line, which reveals the Cre recombinase activities in retinal amacrine cells, developing limbs, testis, hippocampal neurons, thalamic neurons, and cerebellar neurons. Taken together, the Lhx9-GCE mouse line could serve as a beneficial tool for lineage tracing and gene manipulation experiments.
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