Cited by 391Bone Metabolism and DiseasesCell death mechanisms and regulationOsteomyelitis and Bone Disorders Research

Osteoprotegerin ligand modulates murine osteoclast survival in vitro and in vivo.

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Lacey, David L., Tan, Hong Lin, Lu, John, Kaufman, Steven, Van, Gwyneth, Qiu, Wanrang, Rattan, Alana, Scully, Sheila +6 more·2000·The American Journal of Pathology

Abstract

Osteoprotegerin ligand (OPGL) targets osteoclast precursors and osteoclasts to enhance differentiation and activation, however, little is known about OPGL effects on osteoclast survival. In vitro, the combination of OPGL + colony-stimulating factor-1 (CSF-1) is required for optimal osteoclast survival. Ultrastructurally, apoptotic changes were observed in detached cells and culture lysates exhibited elevated caspase 3 activity, particularly in cultures lacking CSF-1. DEVD-FMK (caspase 3 inhibitor) partially protected cells when combined with OPGL, but not when used alone or in combination with CSF-1. CSF-1 maintained NF-kappaB activation and increased the expression of bcl-2 and bcl-X(L) mRNA, but had no effect on JNK activation. In contrast, OPGL enhanced both NF-kappaB and JNK kinase activation and increased the expression of c-src, but not bcl-2 and bcl-X(L) mRNA. These data suggest that aspects of both OPGL's and CSF-1's signaling/survival pathways are required for optimal osteoclast survival. In mice, a single dose of OPG, the OPGL decoy receptor, led to a >90% loss of osteoclasts because of apoptosis within 48 hours of exposure without impacting osteoclast precursor cells. Therefore, OPGL is essential, but not sufficient, for osteoclast survival and endogenous CSF-1 levels are insufficient to maintain osteoclast viability in the absence of OPGL.

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  1. Okahashi N, Koide M, Jimi E, Suda T, Nishihara T: Caspases (inter- leukin-1b-converting enzyme proteases) are involved in the regula- tion of the survival of osteoclasts. Bone 1998, 23:33-41

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Authors
Lacey, D. L., Tan, H. L., Lu, J., Kaufman, S., Van, G., Qiu, W., Rattan, A., Scully, S., Fletcher, F., Juan, T., Kelley, M., Burgess, T. L., Boyle, W. J., & Polverino, A. J.
Affiliations
Amgen (United States) (US)
Corresponding author
Lacey, David L.
Venue
The American Journal of Pathology
Publisher
Elsevier BV
Published
2000-08
Volume
157
Issue
2
Pages
435-448
ISSN
0002-9440 (ISSN-L)
OpenAlex
W2133551420
Cited by
391
References
33
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 5 · 2022: 9 · 2021: 10 · 2020: 12 · 2019: 23 · 2018: 7 · 2017: 10 · 2016: 15 · 2015: 10 · 2014: 7 · 2013: 27 · 2012: 25
FWCI
5.17
Type
journal article
Language
en
Open access
Locations
  • American Journal Of Pathology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Health Sciences › Medicine › Rheumatology › Osteomyelitis and Bone Disorders Research
Keywords
osteoprotegerin ligand, osteoclast survival, colony-stimulating factor 1, osteoclast apoptosis, caspase-3, NF-κB activation, JNK activation, Bcl-2, Bcl-xL, Src kinase, osteoprotegerin, bone resorption, osteoclastogenesis
MeSH terms
Animals, Carrier Proteins, Cell Survival, Cells, Cultured, Gene Expression Regulation, Glycoproteins, Injections, Subcutaneous, Male, Membrane Glycoproteins, Mice, Inbred C3H, Osteoclasts, RNA, Messenger, Time Factors, Macrophage Colony-Stimulating Factor, NF-kappa B, Apoptosis, Receptors, Tumor Necrosis Factor, Receptors, Cytoplasmic and Nuclear, Proto-Oncogene Proteins c-bcl-2, bcl-X Protein, Mice, Osteoprotegerin, RANK Ligand, Receptor Activator of Nuclear Factor-kappa B

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