Generation of an OMgp allelic series in mice.

Generation of an OMgp allelic series in mice.
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DOI:
10.1002/dvg.20557
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发表时间:
2009-11
期刊:
影响因子:
1.5
通讯作者:
Zheng, Binhai
Zheng, Binhai
中科院分区:
生物学4区
文献类型:
--
作者:
Lee, Jae K.;Case, Lauren C.;Chan, Andrea F.;Zhu, Yuhong;Tessier-Lavigne, Marc;Zheng, Binhai

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成熟哺乳动物中枢神经系统(CNS)损伤后再生轴突的能力非常有限,部分原因是CNS髓鞘的生长受限性质。少突胶质细胞髓磷脂糖蛋白(OMgp)被认为是主要的髓鞘来源的轴突生长抑制因子。然而,它在体内轴突再生中的作用还知之甚少。在这里,我们描述了OMgp等位基因系列的产生和分子特征。通过单基因打靶事件和Cre/FLP介导的重组,我们产生了一个带有LacZ报告基因的OMGp零等位基因,一个没有报告基因的OMGp条件等位基因。该等位基因序列将有助于利用小鼠脊髓损伤模型研究OMgp在成年中枢神经系统轴突再生中的作用。当使用可诱导的Cre时,条件等位基因将克服发育补偿,并允许研究OMgp在中枢神经系统损伤诱导的轴突可塑性中的时间和组织/细胞类型特异性作用。
The very limited ability to regenerate axons after injury in the mature mammalian central nervous system (CNS) has been partly attributed to the growth restrictive nature of CNS myelin. Oligodendrocyte myelin glycoprotein (OMgp) was identified as a major myelin-derived inhibitor of axon growth. However, its role in axon regeneration in vivo is poorly understood. Here we describe the generation and molecular characterization of an OMgp allelic series. With a single gene targeting event and Cre/FLP mediated recombination, we generated an OMgp null allele with a LacZ reporter, one without a reporter gene, and an OMgp conditional allele. This allelic series will aid in the study of OMgp in adult CNS axon regeneration using mouse models of spinal cord injury. The conditional allele will overcome developmental compensation when employed with an inducible Cre, and allows for the study of temporal and tissue/cell type-specific roles of OMgp in CNS injury-induced axonal plasticity.
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