期刊
INTERNATIONAL JOURNAL OF BIOCHEMISTRY & CELL BIOLOGY
卷 39, 期 6, 页码 1077-1081出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.biocel.2006.11.008
关键词
bone resorption; osteoprotegerin; chemoattraction
RANK ligand (RANKL), a key mediator of bone resorption in normal and pathological states, is expressed as membrane-bound or soluble forms by tissues as diverse as lymph nodes, spleen, thymus and bone-forming cells. In normal bone turnover and in bone metastasis, RANKL stimulates the formation and activity of bone-removing cells, osteoclasts, by binding to its cognate receptor, RANK, on osteoclasts and their progenitors; these processes are disrupted by binding of RANKL to osteoprotegerin (OPG), a soluble decoy receptor. Whilst no mutations in the RANKL gene have yet been identified in human disease, mutations that result in enhanced RANK signalling through inactivation of OPG or activation of RANK are associated with Juvenile Paget's disease and familial expansile osteolysis, respectively. This review focuses on the central role of RANKL in bone resorption and on the therapeutic targeting of RANKL in osteoporosis, humoral hypercalcaemia of malignancy and bone metastasis. (C) 2006 Elsevier Ltd. All rights reserved.
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