Cited by 90Bone Metabolism and DiseasesBone health and osteoporosis researchBone and Dental Protein Studies

Bone cell communication factors and Semaphorins

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Negishi-Koga, Takako, Takayanagi, Hiroshi·2012·BoneKEy Reports

Abstract

Bone tissue is continuously renewed throughout adult life by a process called 'remodeling', which involves a dynamic interplay among bone cells including osteoclasts, osteoblasts and osteocytes. For example, a tight coupling between bone resorption and formation is essential for the homeostasis of the skeletal system. Studies on the coupling mechanism in physiological and pathological settings have revealed that osteoclasts or osteoclastic bone resorption promote bone formation through the production of diverse coupling factors. The classical coupling factors are the molecules that promote bone formation after resorption, but there may be distinct mechanisms at work in various phases of bone remodeling. A recent study revealed that the Semaphorin 4D expressed by osteoclasts inhibits bone formation, which represents a mechanism by which coupling is dissociated. Furthermore, it has been demonstrated that osteoblastic expression of Semaphorin 3A exerts an osteoprotective effect by both suppressing bone resorption and increasing bone formation. Thus, recent advances have made it increasingly clear that bone remodeling is regulated by not only classical coupling factors, but also molecules that mediate cell-cell communication among bone cells. We propose that such factors be called bone cell communication factors, which control the delicate balance of the interaction of bone cells so as to maintain bone homeostasis.

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Crossref · 10.1038/bonekey.2012.183

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  • During bone remodeling, osteoclasts inhibit bone formation by expressing Sema4D to initiate bone resorption, while osteoblasts express Sema3A that suppresses bone resorption prior to bone formation.

    “Thus, during the bone remodeling cycle, osteoclasts inhibit bone formation by expressing Sema4D, in order to initiate bone resorption, whereas osteoblasts express Sema3A that suppresses bone resorption, prior to bone formation [146] (Figure 5).”
  • Semaphorins are involved in bone cell communication during bone remodeling.

    “Recently, it has been suggested that another category of molecules called semaphorins is involved in the bone cell communication during bone remodeling [146].”

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Authors
Negishi-Koga, T., & Takayanagi, H.
Affiliations
Japan Science and Technology Agency (JP)
Venue
BoneKEy Reports
Publisher
Portico
Published
2012-09-19
Volume
1
Pages
183
ISSN
2047-6396 (ISSN-L)
OpenAlex
W2023664549
Cited by
90
References
55
Citations by year
2026: 2 · 2025: 3 · 2024: 3 · 2023: 12 · 2022: 5 · 2021: 5 · 2020: 12 · 2019: 9 · 2018: 10 · 2017: 8 · 2016: 6 · 2015: 11 · 2014: 4
FWCI
0.44
Type
journal article
Language
en
Open access
Locations
  • BoneKEy Reports (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ministry of Education, Culture, Sports, Science and Technology
  • Japan Science and Technology Agency
  • Exploratory Research for Advanced Technology
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 › Bone and Dental Protein Studies
Keywords
bone remodeling, semaphorins, Sema4D, semaphorin 3A, osteoclasts, osteoblasts, osteocytes, bone resorption, bone formation, coupling coefficient, bone homeostasis, intercellular communication

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