Cited by 114Bone Metabolism and DiseasesBone health and osteoporosis researchOsteomyelitis and Bone Disorders Research

Local Production of Osteoprotegerin by Osteoblasts Suppresses Bone Resorption

Open access
Cawley, Keisha M., Bustamante-Gomez, Nancy Cecile, Guha, Anveshi G., MacLeod, Ryan S., Xiong, Jinhu, Gubrij, Igor, Liu, Yu, Mulkey, Robin +4 more·2020·Cell Reports

Abstract

Osteoprotegerin (OPG) inhibits the ability of receptor activator of nuclear factor κB (NF-κB) ligand (RANKL) to stimulate the differentiation, activity, and survival of bone-resorbing osteoclasts. Genetic studies in mice show that osteocytes are an important source of RANKL, but the cellular sources of OPG are unclear. We use conditional deletion of Tnfrsf11b, which encodes OPG, from different cell populations to identify functionally relevant sources of OPG in mice. Deletion from B lymphocytes and osteocytes, two cell types commonly thought to supply OPG, has little or no impact on bone mass. By contrast, deletion of Tnfrsf11b from osteoblasts increases bone resorption and reduces bone mass to an extent similar to germline deletion, demonstrating that osteoblasts are an essential source of OPG. These results suggest that, in addition to producing new bone matrix, osteoblasts also play an active role in terminating the resorption phase of the bone remodeling cycle by suppressing RANKL activity.

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Integrity signals

Registry

Crossref · 10.1016/j.celrep.2020.108052

Cites

49 of 49 references verified0 citation errors · 0 not checkable

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  • T cells signal to B cells to induce OPG expression.

    “Furthermore, T cells signal to B cells to induce OPG expression [76, 77].”

    From Osteoimmunology of Fracture Healing. (2024) · cites this paper as [76]

    The Introduction and Discussion state that B cells produce OPG. They do not say that T cells signal to B cells or induce that production; the paper’s B-cell deletion experiment addresses OPG’s role in bone resorption, not how its expression is induced. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • OPG released by mature osteoblasts and/or osteocytes may constitute the termination signal of the resorption phase in the remodeling cycle.

    “Nevertheless, OPG released by mature osteoblasts and/or osteocytes may constitute the termination signal of the resorption phase in the remodeling cycle.77”
  • OPG inhibitory activity is mandatory for the correct shift from bone resorption to bone formation and protects newly formed bone against untimely resorption.

    “This inhibitory activity is mandatory for the correct shift from bone resorption to bone formation and protects newly formed bone against untimely resorption.77”
  • The local concentration of OPG near the cell surface is a key factor in its ability to block the activity of RANKL.

    “Cawley’s study stressed the concept “that the local concentration of OPG near the cell surface is a key factor in its ability to block the activity of RANKL”.”
  • Osteocytes can be considered dynamic cells capable of reconstituted mechanical sensitivity after replacement and inhibitory control over osteoclastogenesis via local production of OPG.

    “Hence, osteocytes can be considered dynamic cells capable of reconstituted mechanical sensitivity after replacement293 as well as the inhibitory control over osteoclastogenesis via the local production of OPG.77”

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Research works printed but not linked: 1

  1. Bone Miner J. Res. 23, 860– 869. 18269310

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Authors
Cawley, K. M., Bustamante-Gomez, N. C., Guha, A. G., MacLeod, R. S., Xiong, J., Gubrij, I., Liu, Y., Mulkey, R., Palmieri, M., Thostenson, J. D., Goellner, J. J., & O’Brien, C. A.
Affiliations
  • University of Arkansas for Medical Sciences (US)
  • Central Arkansas Veterans Healthcare System (US)
Corresponding author
O’Brien, Charles A.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2020-09
Volume
32
Issue
10
Pages
108052
ISSN
2211-1247 (ISSN-L)
OpenAlex
W3084164734
Cited by
114
References
49
Citations by year
2026: 15 · 2025: 18 · 2024: 15 · 2023: 20 · 2022: 28 · 2021: 13 · 2020: 5
FWCI
5.35
Type
journal article
Language
en
Update notices
erratum (2025-06-24)
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion, cc-by-nc-nd)
Funders
  • U.S. Department of Veterans Affairs (I01 BX000294)
  • University of Arkansas for Medical Sciences
  • National Institutes of Health (R01AR049794, P20GM125503)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
  • Health Sciences › Medicine › Rheumatology › Osteomyelitis and Bone Disorders Research
Keywords
osteoprotegerin, osteoblasts, bone resorption, RANKL, osteocytes, B cells, bone remodeling, conditional gene deletion, bone mass, osteoclasts
MeSH terms
Animals, Cell Differentiation, Humans, Osteoblasts, Osteoclasts, Osteocytes, Bone Remodeling, Mice, Osteoprotegerin

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