Detection and organ-specific ablation of neuroendocrine cells by synaptophysin locus-based BAC cassette in transgenic mice.

Detection and organ-specific ablation of neuroendocrine cells by synaptophysin locus-based BAC cassette in transgenic mice.
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DOI:
10.1371/journal.pone.0060905
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Nikitin AY
Nikitin AY
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Cheng CY;Zhou Z;Nikitin AY

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弥漫性神经内分泌系统细胞在个体器官和组织的发育和维持中的作用仍然知之甚少。在这里,我们确定了一个足以准确体内表达突触素(SYP)(神经内分泌分化的常见标志物)的调节区域,并报告了适合灵活的器官特异性消融神经内分泌细胞的Tg(Syp-EGFPloxP-DTA)147Ayn(SypELDTA)小鼠的生成。这些小鼠在 Cre-loxP 介导的重组之前和之后分别在 SYP 阳性细胞中表达 EGFP 和白喉毒素片段 A (DTA)。作为原理证明,我们将 SypELDTA 小鼠与 EIIA-Cre 和 PB-Cre4 小鼠杂交。 EIIA-Cre 小鼠在广泛的组织中表达 Cre 重组酶,而 PB-Cre4 小鼠在前列腺上皮中特异性表达 Cre 重组酶。双转基因EIIA-Cre; SypELDTA 胚胎在 SYP 阳性细胞中表现出大量细胞死亡。同时,PB-Cre4; SypELDTA 小鼠表现出神经内分泌细胞数量大幅减少以及相关的前列腺萎缩。由于在非神经内分泌上皮细胞中没有观察到细胞死亡和/或 Cre-loxP 介导的重组增加,这些结果表明神经内分泌细胞在前列腺发育中发挥重要作用。基于 Syp 位点的盒的高细胞类型特异性和生成的小鼠模型的多功能性应确保这些资源适用于研究各种组织和器官中的神经内分泌细胞功能。
The role of cells of the diffuse neuroendocrine system in development and maintenance of individual organs and tissues remains poorly understood. Here we identify a regulatory region sufficient for accurate in vivo expression of synaptophysin (SYP), a common marker of neuroendocrine differentiation, and report generation of Tg(Syp-EGFPloxP-DTA)147Ayn (SypELDTA) mice suitable for flexible organ-specific ablation of neuroendocrine cells. These mice express EGFP and diphtheria toxin fragment A (DTA) in SYP positive cells before and after Cre-loxP mediated recombination, respectively. As a proof of principle, we have crossed SypELDTA mice with EIIA-Cre and PB-Cre4 mice. EIIA-Cre mice express Cre recombinase in a broad range of tissues, while PB-Cre4 mice specifically express Cre recombinase in the prostate epithelium. Double transgenic EIIA-Cre; SypELDTA embryos exhibited massive cell death in SYP positive cells. At the same time, PB-Cre4; SypELDTA mice showed a substantial decrease in the number of neuroendocrine cells and associated prostate hypotrophy. As no increase in cell death and/or Cre-loxP mediated recombination was observed in non-neuroendocrine epithelium cells, these results suggest that neuroendocrine cells play an important role in prostate development. High cell type specificity of Syp locus-based cassette and versatility of generated mouse model should assure applicability of these resources to studies of neuroendocrine cell functions in various tissues and organs.
DOI: 10.1126/science.2531465
发表时间: 1989-12-01
期刊: SCIENCE
影响因子: 56.9
作者:
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期刊: NEUROSCIENCE
影响因子: 3.3
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DOI: 10.1007/s12031-012-9752-2
发表时间: 2012-10-01
影响因子: 3.1
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