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Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway
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| Zeitschriftentitel: | Journal of Leukocyte Biology |
|---|---|
| Personen und Körperschaften: | , |
| In: | Journal of Leukocyte Biology, 78, 2005, 1, S. 259-265 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Oxford University Press (OUP)
|
| Schlagwörter: |
| author_facet |
Lu, Yunbiao Wahl, Larry M Lu, Yunbiao Wahl, Larry M |
|---|---|
| author |
Lu, Yunbiao Wahl, Larry M |
| spellingShingle |
Lu, Yunbiao Wahl, Larry M Journal of Leukocyte Biology Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway Cell Biology Immunology Immunology and Allergy |
| author_sort |
lu, yunbiao |
| spelling |
Lu, Yunbiao Wahl, Larry M 0741-5400 1938-3673 Oxford University Press (OUP) Cell Biology Immunology Immunology and Allergy http://dx.doi.org/10.1189/jlb.0904498 <jats:title>Abstract</jats:title><jats:p>Matrix metalloproteinase-9 (MMP-9) is considered to be an important component in the progression of inflammation. Monocytes/macrophages are prominent at inflammation sites, and activation of these cells by stimulants, such as lipopolysaccharide (LPS) or tumor necrosis factor α and granulocyte macrophage-colony stimulating factor, leads to the production of significant amounts of MMP-9. Here, we show that LPS stimulation of monocytes results in MMP-9 production through a phosphatidylinositol-3 kinase (PI-3K)/Akt/inhibitor of κB (IκB) kinase-α (IKKα)/nuclear factor (NF)-κB pathway. This new role for Akt in signaling leading to MMP-9 production was demonstrated by inhibitor and immunoprecipitation studies. LY294002 or wortmannin, inhibitors of PI-3K, suppressed LPS-induced Akt activity and MMP-9 production. Evidence for the participation of Akt in monocyte MMP-9 synthesis was demonstrated by the inhibition of MMP-9 by SH-5, a specific inhibitor of Akt. The mechanism by which Akt regulates MMP-9 is through the activation of NF-κB, as shown by coimmunoprecipitation of the phosphorylated form of IKKα and Akt as well as the SH-5 suppression of the dissociation of IκB from NF-κB and the activation of NF-κB p65. The role of NF-κB in regulation of MMP-9 was demonstrated further by the inhibition of MMP-9 production by proteasome inhibitors, lactacystin and MG-132, which prevented the ubiquitination and dissociation of IκB from NF-κB. This is the first demonstration that Akt is involved in the signaling pathway leading to the production of monocyte MMP-9 and provides an additional approach in the regulation of this enzyme in human primary monocytes.</jats:p> Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway Journal of Leukocyte Biology |
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| title |
Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_unstemmed |
Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_full |
Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_fullStr |
Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_full_unstemmed |
Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_short |
Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_sort |
production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/akt/ikkα/nf-κb pathway |
| topic |
Cell Biology Immunology Immunology and Allergy |
| url |
http://dx.doi.org/10.1189/jlb.0904498 |
| publishDate |
2005 |
| physical |
259-265 |
| description |
<jats:title>Abstract</jats:title><jats:p>Matrix metalloproteinase-9 (MMP-9) is considered to be an important component in the progression of inflammation. Monocytes/macrophages are prominent at inflammation sites, and activation of these cells by stimulants, such as lipopolysaccharide (LPS) or tumor necrosis factor α and granulocyte macrophage-colony stimulating factor, leads to the production of significant amounts of MMP-9. Here, we show that LPS stimulation of monocytes results in MMP-9 production through a phosphatidylinositol-3 kinase (PI-3K)/Akt/inhibitor of κB (IκB) kinase-α (IKKα)/nuclear factor (NF)-κB pathway. This new role for Akt in signaling leading to MMP-9 production was demonstrated by inhibitor and immunoprecipitation studies. LY294002 or wortmannin, inhibitors of PI-3K, suppressed LPS-induced Akt activity and MMP-9 production. Evidence for the participation of Akt in monocyte MMP-9 synthesis was demonstrated by the inhibition of MMP-9 by SH-5, a specific inhibitor of Akt. The mechanism by which Akt regulates MMP-9 is through the activation of NF-κB, as shown by coimmunoprecipitation of the phosphorylated form of IKKα and Akt as well as the SH-5 suppression of the dissociation of IκB from NF-κB and the activation of NF-κB p65. The role of NF-κB in regulation of MMP-9 was demonstrated further by the inhibition of MMP-9 production by proteasome inhibitors, lactacystin and MG-132, which prevented the ubiquitination and dissociation of IκB from NF-κB. This is the first demonstration that Akt is involved in the signaling pathway leading to the production of monocyte MMP-9 and provides an additional approach in the regulation of this enzyme in human primary monocytes.</jats:p> |
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| author | Lu, Yunbiao, Wahl, Larry M |
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| description | <jats:title>Abstract</jats:title><jats:p>Matrix metalloproteinase-9 (MMP-9) is considered to be an important component in the progression of inflammation. Monocytes/macrophages are prominent at inflammation sites, and activation of these cells by stimulants, such as lipopolysaccharide (LPS) or tumor necrosis factor α and granulocyte macrophage-colony stimulating factor, leads to the production of significant amounts of MMP-9. Here, we show that LPS stimulation of monocytes results in MMP-9 production through a phosphatidylinositol-3 kinase (PI-3K)/Akt/inhibitor of κB (IκB) kinase-α (IKKα)/nuclear factor (NF)-κB pathway. This new role for Akt in signaling leading to MMP-9 production was demonstrated by inhibitor and immunoprecipitation studies. LY294002 or wortmannin, inhibitors of PI-3K, suppressed LPS-induced Akt activity and MMP-9 production. Evidence for the participation of Akt in monocyte MMP-9 synthesis was demonstrated by the inhibition of MMP-9 by SH-5, a specific inhibitor of Akt. The mechanism by which Akt regulates MMP-9 is through the activation of NF-κB, as shown by coimmunoprecipitation of the phosphorylated form of IKKα and Akt as well as the SH-5 suppression of the dissociation of IκB from NF-κB and the activation of NF-κB p65. The role of NF-κB in regulation of MMP-9 was demonstrated further by the inhibition of MMP-9 production by proteasome inhibitors, lactacystin and MG-132, which prevented the ubiquitination and dissociation of IκB from NF-κB. This is the first demonstration that Akt is involved in the signaling pathway leading to the production of monocyte MMP-9 and provides an additional approach in the regulation of this enzyme in human primary monocytes.</jats:p> |
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| spelling | Lu, Yunbiao Wahl, Larry M 0741-5400 1938-3673 Oxford University Press (OUP) Cell Biology Immunology Immunology and Allergy http://dx.doi.org/10.1189/jlb.0904498 <jats:title>Abstract</jats:title><jats:p>Matrix metalloproteinase-9 (MMP-9) is considered to be an important component in the progression of inflammation. Monocytes/macrophages are prominent at inflammation sites, and activation of these cells by stimulants, such as lipopolysaccharide (LPS) or tumor necrosis factor α and granulocyte macrophage-colony stimulating factor, leads to the production of significant amounts of MMP-9. Here, we show that LPS stimulation of monocytes results in MMP-9 production through a phosphatidylinositol-3 kinase (PI-3K)/Akt/inhibitor of κB (IκB) kinase-α (IKKα)/nuclear factor (NF)-κB pathway. This new role for Akt in signaling leading to MMP-9 production was demonstrated by inhibitor and immunoprecipitation studies. LY294002 or wortmannin, inhibitors of PI-3K, suppressed LPS-induced Akt activity and MMP-9 production. Evidence for the participation of Akt in monocyte MMP-9 synthesis was demonstrated by the inhibition of MMP-9 by SH-5, a specific inhibitor of Akt. The mechanism by which Akt regulates MMP-9 is through the activation of NF-κB, as shown by coimmunoprecipitation of the phosphorylated form of IKKα and Akt as well as the SH-5 suppression of the dissociation of IκB from NF-κB and the activation of NF-κB p65. The role of NF-κB in regulation of MMP-9 was demonstrated further by the inhibition of MMP-9 production by proteasome inhibitors, lactacystin and MG-132, which prevented the ubiquitination and dissociation of IκB from NF-κB. This is the first demonstration that Akt is involved in the signaling pathway leading to the production of monocyte MMP-9 and provides an additional approach in the regulation of this enzyme in human primary monocytes.</jats:p> Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway Journal of Leukocyte Biology |
| spellingShingle | Lu, Yunbiao, Wahl, Larry M, Journal of Leukocyte Biology, Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway, Cell Biology, Immunology, Immunology and Allergy |
| title | Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_full | Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_fullStr | Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_full_unstemmed | Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_short | Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| title_sort | production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/akt/ikkα/nf-κb pathway |
| title_unstemmed | Production of matrix metalloproteinase-9 by activated human monocytes involves a phosphatidylinositol-3 kinase/Akt/IKKα/NF-κB pathway |
| topic | Cell Biology, Immunology, Immunology and Allergy |
| url | http://dx.doi.org/10.1189/jlb.0904498 |