A novel member of the leukocyte receptor complex regulates osteoclast differentiation.

A novel member of the leukocyte receptor complex regulates osteoclast differentiation.
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DOI:
10.1084/jem.20011681
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发表时间:
2002-01-21
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Choi Y
Choi Y
中科院分区:
其他
文献类型:
--
作者:
Kim N;Takami M;Rho J;Josien R;Choi Y

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破骨细胞(OCs)是吸收骨的多核细胞,对骨稳态至关重要。它们由髓细胞系的造血细胞发育而来。OC的形成需要细胞间与成骨细胞的相互作用,可以通过骨髓前体细胞与成骨细胞/基质细胞共培养来实现。介导成骨细胞诱导破骨细胞发生的两个关键因子是巨噬细胞集落刺激因子(M-CSF)和肿瘤坏死因子(TNF)家族成员TNF相关激活诱导细胞因子(TRANCE),它们是由成骨细胞/基质细胞响应各种骨吸收激素产生的。此外,成骨细胞/基质细胞产生的其他因子进一步影响破骨细胞的发生。在这里,我们报道了oc相关受体(OSCAR)的鉴定和表征,这是白细胞受体复合物(LRC)编码家族的一个新成员,在oc中特异性表达。LRC中的基因产生免疫球蛋白(Ig)样表面受体,并在先天和适应性免疫反应的调节中发挥关键作用。与先前表征的LRC复合体成员不同,OSCAR的表达在破骨前细胞或成熟oc中特异性检测到。其推定配体(OSCAR-L)主要在成骨细胞/基质细胞中表达。此外,在骨吸收因子存在的情况下,在成骨细胞共培养中添加一种可溶性形式的OSCAR可抑制骨髓前体细胞形成OC,这表明OSCAR可能是OC分化的重要骨特异性调节剂。此外,这项研究表明,lrc编码的基因可能已经进化到调节免疫系统以外的细胞生理。
Osteoclasts (OCs) are multinucleated cells that resorb bone and are essential for bone homeostasis. They develop from hematopoietic cells of the myelomonocytic lineage. OC formation requires cell-to-cell interactions with osteoblasts and can be achieved by coculturing bone marrow precursor cells with osteoblasts/stromal cells. Two of the key factors mediating the osteoblast-induced osteoclastogenesis are macrophage–colony stimulating factor (M-CSF) and the tumor necrosis factor (TNF) family member TNF–related activation-induced cytokine (TRANCE) that are produced by osteoblasts/stromal cells in response to various bone resorbing hormones. In addition, other factors produced by osteoblasts/stromal cells further influence osteoclastogenesis. Here we report the identification and characterization of OC-associated receptor (OSCAR), a novel member of the leukocyte receptor complex (LRC)-encoded family expressed specifically in OCs. Genes in the LRC produce immunoglobulin (Ig)-like surface receptors and play critical roles in the regulation of both innate and adaptive immune responses. Different from the previously characterized members of the LRC complex, OSCAR expression is detected specifically in preosteoclasts or mature OCs. Its putative–ligand (OSCAR-L) is expressed primarily in osteoblasts/stromal cells. Moreover, addition of a soluble form of OSCAR in coculture with osteoblasts inhibits the formation of OCs from bone marrow precursor cells in the presence of bone-resorbing factors, indicating that OSCAR may be an important bone-specific regulator of OC differentiation. In addition, this study suggests that LRC-encoded genes may have evolved to regulate the physiology of cells beyond those of the immune system.
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影响因子: --
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Pessino A;Sivori S;Bottino C;Malaspina A;Morelli L;Moretta L;Biassoni R;Moretta A
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影响因子: --
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发表时间: 2000-11-21
影响因子: 11.1
作者:
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DOI: 10.1038/36593
发表时间: 1997-11-13
期刊: NATURE
影响因子: 64.8
作者:
Anderson, DM;Maraskovsky, E;Galibert, L
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