Cadherin-mediated cell-cell adhesion and signaling in the skeleton.
Cadherin-mediated cell-cell adhesion and signaling in the skeleton.
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DOI:
10.1007/s00223-013-9733-7
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发表时间:
2014-01
影响因子:
4.2
通讯作者:
Civitelli, Roberto
中科院分区:
文献类型:
--
作者:
Marie, Pierre J.;Hay, Eric;Modrowski, Dominique;Revollo, Leila;Mbalaviele, Gabriel;Civitelli, Roberto
Direct cell-to-cell interactions via cell adhesion molecules, in particular cadherins, are critical for morphogenesis, tissue architecture, and cell sorting and differentiation. Partially overlapping, yet distinct roles of N-cadherin (cadherin-2) and cadherin-11 in the skeletal system have emerged from mouse genetics and in vitro studies. Both cadherins are important for precursor commitment to the osteogenic lineage, and genetic ablation of Cdh2 and Cdh11 results in skeletal growth defects and impaired bone formation. While Cdh11 defines the osteogenic lineage, persistence of Cdh2 in osteoblasts in vivo actually inhibits their terminal differentiation and impairs bone formation. The action of cadherins involves both cell-cell adhesion and interference with intracellular signaling, and in particular the Wnt/β-catenin pathway. Both cadherin-2 and cadherin-11 bind to β-catenin, thus modulating its cytoplasmic pools and transcriptional activity. Recent data demonstrate that cadherin-2 also interferes with Lrp5/6 signaling by sequestering these receptors in inactive pools via axin binding. These data extend the biologic action of cadherins in bone forming cells, and provide novel mechanisms for development of therapeutic strategies aimed at enhancing bone formation.
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