Cited by 50Bone Metabolism and DiseasesNF-κB Signaling PathwaysRheumatoid Arthritis Research and Therapies

Osteoprotegerin reduces the serum level of receptor activator of NF-κB ligand derived from osteoblasts.

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Nakamichi, Yuko, Udagawa, Nobuyuki, Kobayashi, Yasuhiro, Nakamura, Midrori, Yamamoto, Yohei, Yamashita, Teruhito, Mizoguchi, Toshihide, Sato, Masahiro +3 more·2007·The Journal of Immunology

Abstract

Osteoprotegerin (OPG) is a decoy receptor for receptor activator of NF-κB ligand (RANKL). We previously reported that OPG deficiency elevated the circulating level of RANKL in mice. Using OPG−/− mice, we investigated whether OPG is involved in the shedding of RANKL by cells expressing RANKL. Osteoblasts and activated T cells in culture released a large amount of RANKL in the absence of OPG. OPG or a soluble form of receptor activator of NF-κB (the receptor of RANKL) suppressed the release of RANKL from those cells. OPG- and T cell-double-deficient mice showed an elevated serum RANKL level equivalent to that of OPG−/− mice, indicating that circulating RANKL is mainly derived from bone. The serum level of RANKL in OPG−/− mice was increased by ovariectomy or administration of 1α,25-dihydroxyvitamin D3. Expression of RANKL mRNA in bone, but not thymus or spleen, was increased in wild-type and OPG−/− mice by 1α,25-dihydroxyvitamin D3. These results suggest that OPG suppresses the shedding of RANKL from osteoblasts and that the serum RANKL in OPG−/− mice exactly reflects the state of bone resorption.

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Authors
Nakamichi, Y., Udagawa, N., Kobayashi, Y., Nakamura, M., Yamamoto, Y., Yamashita, T., Mizoguchi, T., Sato, M., Mogi, M., Penninger, J. M., & Takahashi, N.
Affiliations
  • Matsumoto Dental University (JP)
  • Aichi Gakuin University (JP)
  • Institute of Molecular Biotechnology (AT)
Corresponding author
  • Nakamichi, Yuko
  • Kobayashi, Yasuhiro
  • Yamashita, Teruhito
  • Mizoguchi, Toshihide
  • Takahashi, Naoyuki
Venue
The Journal of Immunology
Published
2007-01-01
Volume
178
Issue
1
Pages
192-200
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1536343809
Cited by
50
References
44
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 2 · 2021: 3 · 2020: 3 · 2019: 2 · 2017: 3 · 2016: 5 · 2015: 1 · 2013: 3 · 2012: 1
FWCI
2.25
Type
journal article
Language
en
Open access
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Society for the Promotion of Science (16390535, 17390497)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
  • Health Sciences › Medicine › Rheumatology › Rheumatoid Arthritis Research and Therapies
Keywords
osteoprotegerin, RANKL, RANK, osteoblasts, bone resorption, activated T cells, 1,25-dihydroxyvitamin D3, ovariectomy
MeSH terms
ADAM17 Protein, Animals, Bone Resorption, Calcitriol, Ligands, Mice, Mutant Strains, Osteoblasts, RNA, Messenger, Spleen, T-Lymphocytes, Thymus Gland, NF-kappa B, Mice, ADAM Proteins, Osteoprotegerin, RANK Ligand, Matrix Metalloproteinases, Membrane-Associated

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