Osteoprotegerin Ligand is a Cytokine That Regulates Osteoclast Differentiation and Activation

Overview

Journal Cell

Publisher Cell Press

Specialty Cell Biology

Date 1998 May 6

PMID 9568710

Citations 1560

Authors

D L Lacey

E Timms

H L Tan

M J Kelley

C R Dunstan

T Burgess

R Elliott

A Colombero

G Elliott

S Scully

H Hsu

J Sullivan

N Hawkins

E DAVY

C Capparelli

A Eli

Y X Qian

S Kaufman

I Sarosi

V Shalhoub

G Senaldi

J Guo

J Delaney

W J Boyle

Affiliations

Soon will be listed here.

Abstract

The ligand for osteoprotegerin has been identified, and it is a TNF-related cytokine that replaces the requirement for stromal cells, vitamin D3, and glucocorticoids in the coculture model of in vitro osteoclastogenesis. OPG ligand (OPGL) binds to a unique hematopoeitic progenitor cell that is committed to the osteoclast lineage and stimulates the rapid induction of genes that typify osteoclast development. OPGL directly activates isolated mature osteoclasts in vitro, and short-term administration into normal adult mice results in osteoclast activation associated with systemic hypercalcemia. These data suggest that OPGL is an osteoclast differentiation and activation factor. The effects of OPGL are blocked in vitro and in vivo by OPG, suggesting that OPGL and OPG are key extracellular regulators of osteoclast development.

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