IL-33 shifts the balance from osteoclast to alternatively activated macrophage differentiation and protects from TNF-alpha-mediated bone loss
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IL-33 shifts the balance from osteoclast to alternatively activated macrophage differentiation and protects from TNF-alpha-mediated bone loss. / Zaiss, Mario M; Kurowska-Stolarska, Mariola; Böhm, Christina; Gary, Regina; Scholtysek, Carina; Stolarski, Bartosz; Reilly, James; Kerr, Shauna; Millar, Neal L; Kamradt, Thomas; McInnes, Iain B; Fallon, Padraic G; David, Jean-Pierre; Liew, Foo Y; Schett, Georg.
In: J IMMUNOL, Vol. 186, No. 11, 01.06.2011, p. 6097-105.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - IL-33 shifts the balance from osteoclast to alternatively activated macrophage differentiation and protects from TNF-alpha-mediated bone loss
AU - Zaiss, Mario M
AU - Kurowska-Stolarska, Mariola
AU - Böhm, Christina
AU - Gary, Regina
AU - Scholtysek, Carina
AU - Stolarski, Bartosz
AU - Reilly, James
AU - Kerr, Shauna
AU - Millar, Neal L
AU - Kamradt, Thomas
AU - McInnes, Iain B
AU - Fallon, Padraic G
AU - David, Jean-Pierre
AU - Liew, Foo Y
AU - Schett, Georg
PY - 2011/6/1
Y1 - 2011/6/1
N2 - IL-33 is a new member of the IL-1 family, which plays a crucial role in inflammatory response, enhancing the differentiation of dendritic cells and alternatively activated macrophages (AAM). Based on the evidence of IL-33 expression in bone, we hypothesized that IL-33 may shift the balance from osteoclast to AAM differentiation and protect from inflammatory bone loss. Using transgenic mice overexpressing human TNF, which develop spontaneous joint inflammation and cartilage destruction, we show that administration of IL-33 or an IL-33R (ST2L) agonistic Ab inhibited cartilage destruction, systemic bone loss, and osteoclast differentiation. Reconstitution of irradiated hTNFtg mice with ST2(-/-) bone marrow led to more bone loss compared with the chimeras with ST2(+/+) bone marrow, demonstrating an important endogenous role of the IL-33/ST2L pathway in bone turnover. The protective effect of IL-33 on bone was accompanied by a significant increase of antiosteoclastogenic cytokines (GM-CSF, IL-4, and IFN-γ) in the serum. In vitro IL-33 directly inhibits mouse and human M-CSF/receptor activator for NF-κB ligand-driven osteoclast differentiation. IL-33 acts directly on murine osteoclast precursors, shifting their differentiation toward CD206(+) AAMs via GM-CSF in an autocrine fashion. Thus, we show in this study that IL-33 is an important bone-protecting cytokine and may be of therapeutic benefit in treating bone resorption.
AB - IL-33 is a new member of the IL-1 family, which plays a crucial role in inflammatory response, enhancing the differentiation of dendritic cells and alternatively activated macrophages (AAM). Based on the evidence of IL-33 expression in bone, we hypothesized that IL-33 may shift the balance from osteoclast to AAM differentiation and protect from inflammatory bone loss. Using transgenic mice overexpressing human TNF, which develop spontaneous joint inflammation and cartilage destruction, we show that administration of IL-33 or an IL-33R (ST2L) agonistic Ab inhibited cartilage destruction, systemic bone loss, and osteoclast differentiation. Reconstitution of irradiated hTNFtg mice with ST2(-/-) bone marrow led to more bone loss compared with the chimeras with ST2(+/+) bone marrow, demonstrating an important endogenous role of the IL-33/ST2L pathway in bone turnover. The protective effect of IL-33 on bone was accompanied by a significant increase of antiosteoclastogenic cytokines (GM-CSF, IL-4, and IFN-γ) in the serum. In vitro IL-33 directly inhibits mouse and human M-CSF/receptor activator for NF-κB ligand-driven osteoclast differentiation. IL-33 acts directly on murine osteoclast precursors, shifting their differentiation toward CD206(+) AAMs via GM-CSF in an autocrine fashion. Thus, we show in this study that IL-33 is an important bone-protecting cytokine and may be of therapeutic benefit in treating bone resorption.
KW - Animals
KW - Blotting, Western
KW - Bone Marrow Cells
KW - Bone Resorption
KW - Cell Differentiation
KW - Chondrocytes
KW - Humans
KW - Immunohistochemistry
KW - Interleukins
KW - Macrophages
KW - Mice
KW - Mice, Inbred C57BL
KW - Mice, Knockout
KW - Mice, Transgenic
KW - Osteoclasts
KW - Receptors, Interleukin
KW - Receptors, Interleukin-1
KW - Reverse Transcriptase Polymerase Chain Reaction
KW - Signal Transduction
KW - Tumor Necrosis Factor-alpha
U2 - 10.4049/jimmunol.1003487
DO - 10.4049/jimmunol.1003487
M3 - SCORING: Journal article
C2 - 21515798
VL - 186
SP - 6097
EP - 6105
JO - J IMMUNOL
JF - J IMMUNOL
SN - 0022-1767
IS - 11
ER -