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. 1983 Aug;72(2):516–525. doi: 10.1172/JCI110999

Saccharides mediate the attachment of rat macrophages to bone in vitro.

Z Bar-Shavit, S L Teitelbaum, A J Kahn
PMCID: PMC1129209  PMID: 6308056

Abstract

Macrophages (M phi) are multipotential cells capable of giving rise to osteoclasts and of resorbing bone. Since both of these processes are ultimately dependent upon the attachment of cells to a mineralized bone surface, we have examined in this study the mechanism by which such attachment is achieved. The data show that elicited rat peritoneal M phi bind to bone in a temperature-dependent and -saturable manner with half-maximal attachment occurring within 10 min at 37 degrees C and reaching a plateau by approximately 60 min. The kinetics of binding are essentially the same whether devitalized bone particles or viable calvaria are used as a substrate. The attachment of M phi to bone is inhibited by some sugars (e.g., N-acetyl-galactosamine, thiogalactoside, beta-lactose), fetuin and asialofetuin, and by pretreating the bone with periodate. Binding is also significantly reduced when M phi are preincubated with tunicamycin and swainsonine at nontoxic concentrations sufficient to inhibit or alter glycosylation. On the other hand, exposing the cells to neuraminidase increases the capacity of M phi to bind to bone. Collectively, our observations indicate that the attachment of M phi to bone is a highly regulated process and is mediated, at least in part, by saccharides located on both the cell and the bone surface.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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