Specific expression of Cre recombinase in hypertrophic cartilage under the control of a BAC-Col10a1 promoter.

Specific expression of Cre recombinase in hypertrophic cartilage under the control of a BAC-Col10a1 promoter.
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在BAC-COL10A1启动子控制下,在肥厚软骨中CRE重组酶的特异性表达。

DOI:
10.1016/j.matbio.2008.07.001
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发表时间:
2008-10
期刊:
Matrix biology : journal of the International Society for Matrix Biology
影响因子:
--
通讯作者:
von der Mark K
von der Mark K
中科院分区:
其他
文献类型:
--
作者:
Gebhard S;Hattori T;Bauer E;Schlund B;Bösl MR;de Crombrugghe B;von der Mark K

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先前我们已经表明,在细菌人工染色体(BAC)的背景下将LacZ报道基因插入Col 10a 1基因中驱动LacZ在转基因小鼠的肥大软骨中的强烈和特异性表达[Gebhard S.,服部T鲍尔·E Bosl M.R.,Schlund B.,Poschl E.,亚当·N de Crombrugghe B.,von der Mark K.,2007年组织化学。Cell Biol.19127:183-194]。转基因报告小鼠系中的BAC构建体在完整Col 10a 1启动子下控制肥大软骨细胞中高效和特异性LacZ表达在这里,我们报告的Col 10a 1特异性Cre删除小鼠的产生使用BAC重组工程技术的基础上同源重组在E。杆菌产生16个BAC-Col 10-Cre转基因株系,其含有1至5个拷贝的BAC-Col 10-Cre基因。到目前为止,所有测试的细胞系都在长骨、肋骨、椎骨和胸骨的E16.5和P1生长板的肥大软骨细胞中特异性表达Cre,如通过与ROSA 26报告小鼠杂交所检查的。早在E13.5,当股骨和肱骨骨干中的肥大软骨发育时,就检测到Cre活性。这些数据证实,在完全BAC-Col 10a 1启动子的控制下,Cre的表达在肥大软骨细胞中以高效率和特异性发生。因此,BAC-Col 10-Cre系应该提供一个有价值的工具,通过允许它们在生长板的肥大区中的特异性缺失,进一步了解参与软骨内骨化的基因的作用。
Previously we have shown that insertion of a LacZ reporter gene into the Col10a1 gene in the context of a bacterial artificial chromosome (BAC) drives strong and specific expression of LacZ in hypertrophic cartilage of transgenic mice [Gebhard S., Hattori T., Bauer E., Bosl M.R., Schlund B., Poschl E., Adam N., de Crombrugghe B., von der Mark K., 2007 Histochem. Cell Biol. 19 127:183–194]. BAC constructs in transgenic reporter mouse lines control efficient and specific LacZ expression in hypertrophic chondrocytes under the complete Col10a1 promoter. Here we report on the generation of Col10a1-specific Cre deleter mice using a BAC recombineering technique based on homologous recombination in E. coli. Sixteen BAC-Col10-Cre transgenic lines were generated containing between 1 and 5 copies of the BAC-Col10-Cre gene. All lines tested so far expressed Cre specifically in hypertrophic chondrocytes of E16.5 and P1 growth plates of long bones, ribs, vertebrae and sternum as examined by crossing with ROSA26 reporter mice. Cre activity was detected as early as E13.5 when hypertrophic cartilage develops in the diaphysis of femur and humerus. The data confirm that expression of Cre under the control of the complete BAC-Col10a1 promoter occurs with high efficiency and specificity in hypertrophic chondrocytes. The BAC-Col10-Cre lines should thus provide a valuable tool to get further insight into the role of genes involved in endochondral ossification by allowing their specific deletion in the hypertrophic zone of the growth plate.
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发表时间: 2000-06-01
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影响因子: 32.4
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