Cited by 97Bone Metabolism and DiseasesBone health and treatmentsBone health and osteoporosis research

The inhibition of RANKL causes greater suppression of bone resorption and hypercalcemia compared with bisphosphonates in two models of humoral hypercalcemia of malignancy.

Morony, Sean, Warmington, Kelly, Adamu, Stephen, Asuncion, Frank, Geng, Zhaopo, Grisanti, Mario, Tan, Hong Lin, Capparelli, Casey +4 more·2005·Endocrinology

Abstract

Humoral hypercalcemia of malignancy (HHM) is mediated primarily by skeletal and renal responses to tumor-derived PTHrP. PTHrP mobilizes calcium from bone by inducing the expression of receptor activator for nuclear factor-κB ligand (RANKL), a protein that is essential for osteoclast formation, activation, and survival. RANKL does not influence renal calcium reabsorption, so RANKL inhibition is a rational approach to selectively block, and thereby reveal, the relative contribution of bone calcium to HHM. We used the RANKL inhibitor osteoprotegerin (OPG) to evaluate the role of osteoclast-mediated hypercalcemia in two murine models of HHM. Hypercalcemia was induced either by sc inoculation of syngeneic colon (C-26) adenocarcinoma cells or by sc injection of high-dose recombinant PTHrP (0.5 mg/kg, sc, twice per day). In both models, OPG (0.2–5 mg/kg) caused rapid reversal of established hypercalcemia, and the speed and duration of hypercalcemia suppression were significantly greater with OPG (5 mg/kg) than with high-dose bisphosphonates (pamidronate or zoledronic acid, 5 mg/kg). OPG also caused greater reductions in osteoclast surface and biochemical markers of bone resorption compared with either bisphosphonate. In both models, hypercalcemia gradually returned despite clear evidence of ongoing suppression of bone resorption by OPG. These data demonstrate that osteoclasts and RANKL are important mediators of HHM, particularly in the early stages of the condition. Aggressive antiresorptive therapy with a RANKL inhibitor therefore might be a rational approach to controlling HHM.

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Crossref · 10.1210/en.2004-1583

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Authors
Morony, S., Warmington, K., Adamu, S., Asuncion, F., Geng, Z., Grisanti, M., Tan, H. L., Capparelli, C., Starnes, C., Weimann, B., Dunstan, C. R., & Kostenuik, P. J.
Affiliations
Amgen (United States) (US)
Corresponding author
Kostenuik, Paul J.
Venue
Endocrinology
Published
2005-08-01
Volume
146
Issue
8
Pages
3235-3243
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W1989046476
Cited by
97
References
64
Citations by year
2025: 1 · 2024: 3 · 2023: 4 · 2022: 5 · 2021: 3 · 2020: 5 · 2019: 2 · 2018: 1 · 2017: 3 · 2016: 3 · 2015: 6 · 2014: 2 · 2013: 6 · 2012: 5
FWCI
2.99
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Oncology › Bone health and treatments
  • Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
Keywords
humoral hypercalcemia of malignancy, RANKL inhibition, osteoprotegerin, bisphosphonates, pamidronate, zoledronic acid, bone resorption, osteoclasts, parathyroid hormone-related protein, colon adenocarcinoma, antiresorptive therapy, hypercalcemia
MeSH terms
Pamidronate, Adenocarcinoma, Animals, Antineoplastic Agents, Bone Resorption, Calcium, Carrier Proteins, Colonic Neoplasms, Diphosphonates, Disease Models, Animal, Glycoproteins, Humans, Hypercalcemia, Ligands, Membrane Glycoproteins, NF-kappa B, Receptors, Tumor Necrosis Factor, Receptors, Cytoplasmic and Nuclear, Parathyroid Hormone-Related Protein, Cell Line, Tumor, Mice, Osteoprotegerin, RANK Ligand, Receptor Activator of Nuclear Factor-kappa B

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