Glia 2010,
PMID: 20468050
Baker, Brandi J; Park, Keun W; Qin, Hongwei; Ma, Xiangyu; Benveniste, Etty N
Elevated levels of Oncostatin M (OSM), an interleukin-6 family cytokine, have been observed in multiple sclerosis (MS), HIV-associated neurocognitive disorder (HAND), and glioblastoma (GBM); however, its effects within the CNS are not well understood. OSM regulates gene expression primarily by activating the JAK/STAT, NF-kappaB, and/or MAPK pathways, in a cell-type specific manner. In our studies, OSM induces the production of the proinflammatory cytokine tumor necrosis factor-alpha (TNF-alpha) and inducible nitric oxide synthase (iNOS) from microglia in an NF-kappaB-dependent manner. This expression also partially requires the intermediate production of TNF-alpha and subsequent NF-kappaB activation via TNF-R1. We also demonstrate that OSM-induced TNF-alpha production from microglia is neurotoxic. The IL-12 family member, IL-27, suppresses OSM-mediated TNF-alpha and iNOS expression at the transcriptional level by inhibiting activation of the NF-kappaB pathway, and rescues the neurotoxicity induced by OSM-stimulated microglia. These studies are the first to demonstrate the proinflammatory effects of OSM in microglia, and also identify IL-27 as a novel inhibitor of inflammatory processes in these cells.
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Text Mining Data
TNF-alpha ⊣ IL-27: "
IL-27 inhibits OSM mediated
TNF-alpha and iNOS gene expression in microglia
"
iNOS ⊣ IL-27: "
IL-27 inhibits OSM mediated TNF-alpha and iNOS gene expression in microglia
"
OSM — JAK/STAT: "
OSM regulates gene expression primarily by activating the JAK/STAT , NF-kappaB, and/or MAPK pathways, in a cell-type specific manner
"
OSM — JAK/STAT: "
OSM regulates gene expression primarily by activating the JAK/STAT , NF-kappaB, and/or MAPK pathways, in a cell-type specific manner
"
OSM — NF-kappaB: "
OSM regulates gene expression primarily by activating the JAK/STAT, NF-kappaB , and/or MAPK pathways, in a cell-type specific manner
"
OSM — NF-kappaB: "
In our studies, OSM induces the production of the proinflammatory cytokine tumor necrosis factor-alpha (TNF-alpha) and inducible nitric oxide synthase (iNOS) from microglia in an NF-kappaB dependent manner
"
NF-kappaB → TNF-alpha: "
This expression also partially requires the intermediate production of TNF-alpha and subsequent NF-kappaB activation via TNF-R1
"
TNF-alpha → OSM: "
We also demonstrate that OSM induced TNF-alpha production from microglia is neurotoxic
"
Manually curated Databases
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