2010
DOI: 10.1007/s00018-010-0410-y
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Interleukin-33 stimulates formation of functional osteoclasts from human CD14+ monocytes

Abstract: Interleukin (IL)-33 is a recently described pro-inflammatory cytokine. Here we demonstrate IL-33 as a regulator of functional osteoclasts (OCs) from human CD14+ monocytes. IL-33 stimulates formation of tartrate-resistant acid phosphatase (TRAP)+ multinuclear OCs from monocytes. This action was suppressed by anti-ST2 antibody, suggesting that IL-33 acts through its receptor ST2, but not by the receptor activator of NF-κB ligand (RANKL) decoy, osteoprotegerin, or anti-RANKL antibody. IL-33 stimulated activating … Show more

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Cited by 84 publications
(79 citation statements)
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“…This phenomenon may also explain the lack of an inhibitory effect of IL-33 on osteoclast development from human peripheral blood CD14 + cells as observed by us and by others (35,36). This finding is in agreement with an increasing number of studies suggesting the existence of various subsets of human and murine circulating monocytes that differ in their cytokine profile, migratory properties, surface markers, and function.…”
Section: Discussionsupporting
confidence: 80%
“…This phenomenon may also explain the lack of an inhibitory effect of IL-33 on osteoclast development from human peripheral blood CD14 + cells as observed by us and by others (35,36). This finding is in agreement with an increasing number of studies suggesting the existence of various subsets of human and murine circulating monocytes that differ in their cytokine profile, migratory properties, surface markers, and function.…”
Section: Discussionsupporting
confidence: 80%
“…Besides the already described TNF-α and IL-32, IL-33 induces osteoclastogenesis from human monocytes, by activating MAPKs, NF-κB and Syk/PLCγ pathways independently of RANKL [76]. IL-15 directly promotes differentiation of rodent OCPs to preosteoclasts in vitro, through the MAPKs and NF-κB pathways, but also upregulates RANKL expression in synovial fibroblasts [77].…”
Section: Effect Of Arthritic Mediators On Osteoclast Progenitorsmentioning
confidence: 92%
“…Interestingly, IL-33 is not able to affect osteoclast development when added to committed immature osteoclasts, suggesting that IL-33 acts on the very early step of cell commitment. This phenomenon may also explain the lack of an inhibitory effect of IL-33 on osteoclast development from human peripheral blood CD14 + cells [ 18,19 ] .…”
Section: Interleukin-33mentioning
confidence: 92%