Cited by 89Bone Metabolism and DiseasesAxon Guidance and Neuronal SignalingBone and Dental Protein Studies

Expression and function of semaphorin 7A in bone cells

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Delorme, Guillaume, Saltel, Frederic, Bonnelye, Edith, Jurdic, Pierre, Machuca‐Gayet, Irma·2005·Biology of the Cell

Abstract

Background information. Sema‐7A is a glycosylphosphatidylinositol‐anchored semaphorin that was first identified in the immune system. It is a member of a large family of proteins involved in axon guidance signalling. Sema‐7A is expressed in the myeloid and the lymphoid lineage and seems to be involved in cytokine expression and chemotaxy through its receptor Plexin C1. However, it can promote axon outgrowth, acting through a β1 subunit‐containing integrin receptor. Results and conclusions. In the present study, we have investigated its regulation and function in bone cells. Semiquantitative reverse transcriptase—PCR demonstrated that Sema‐7A mRNA is present during all stages of osteoblast differentiation and maturation in mouse calvaria cells and in MC3T3 cell line in vitro. Its expression is also regulated during primary osteoclast differentiation in vitro. We report that Sema‐7A is capable of increasing the migration of MC3T3 cells and that this process is mediated by the mitogen‐activated protein kinase pathway in osteoblasts, probably through the integrin subunit β1. Moreover, the addition of recombinant soluble Sema‐7A to the culture enhances osteoclast fusion. These findings indicate for the first time the possible involvement of Sema‐7A in bone cell differentiation.

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Crossref · 10.1042/bc20040103

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  • Semaphorins are involved in cell-cell communication between osteoclasts and osteoblasts during bone remodeling.

    “In bone, it has been suggested that semaphorins are also involved in cell-cell communication between osteoclasts and osteoblasts during the bone remodeling cycle [174–176].”

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Authors
Delorme, G., Saltel, F., Bonnelye, E., Jurdic, P., & Machuca‐Gayet, I.
Affiliations
Centre National de la Recherche Scientifique (FR)
Corresponding author
Machuca‐Gayet, Irma
Venue
Biology of the Cell
Publisher
Wiley
Published
2005-07
Volume
97
Issue
7
Pages
589-597
ISSN
  • 0248-4900 (ISSN-L)
  • 1768-322X
OpenAlex
W2031056152
Cited by
89
References
26
Citations by year
2025: 3 · 2024: 3 · 2022: 7 · 2021: 4 · 2020: 5 · 2019: 4 · 2018: 9 · 2017: 3 · 2016: 5 · 2015: 4 · 2014: 4 · 2013: 5 · 2012: 7
FWCI
1.76
Type
journal article
Language
en
Open access
Locations
  • Biology of the Cell (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ligue Contre le Cancer
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
  • Health Sciences › Medicine › Rheumatology › Bone and Dental Protein Studies
Keywords
SEMA7A, bone cells, osteogenic differentiation, osteoclastogenesis, osteoclast fusion, cell migration, beta1 integrin, MAPK signaling, MC3T3-E1 cells, calvaria cells, GPI-anchored proteins, bone formation
MeSH terms
Animals, Cell Differentiation, Cell Movement, Cells, Cultured, Humans, Microscopy, Fluorescence, Osteoblasts, Osteoclasts, RNA, Messenger, Antigens, CD, Semaphorins, Mice, GPI-Linked Proteins

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