Linked Life Data

17475886

Source:http://linkedlifedata.com/resource/pubmed/id/17475886

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2007-5-3
pubmed:abstractText
The process of inflammation requires the selective expression of a suite of genes in cells of the macrophage lineage. To identify candidate regulators of inflammation, we used cDNA microarrays to compare the transcriptome of inflammatory macrophages (thioglycolate-elicited peritoneal macrophages), bone marrow-derived macrophages, nonadherent spleen cells, and fibroblasts. We identified genes that were macrophage restricted and further elevated in inflammatory macrophages, and characterized the function of one such gene, gpnmb. Gpnmb mRNA expression was enriched in myelomonocytic cell lines and macrophage-related tissues and strongly up-regulated during macrophage differentiation. Epitope-tagged GPNMB expressed in RAW264.7 cells exhibited a perinuclear distribution and colocalized with the Golgi marker coat protein beta. Upon activation of macrophages with IFN-gamma and LPS, GPNMB translocated from the Golgi apparatus to vesicular compartments scattered toward the periphery. Gpnmb overexpression in RAW264.7 cells caused a 2-fold reduction in the production of the cytokines IL-6 and IL-12p40 and the inflammatory mediator NO in response to LPS. DBA mice, which have an inactivating point mutation in the gpnmb gene, exhibited reduced numbers of myeloid cells, elevated numbers of thioglycolate-elicited peritoneal macrophages, and higher levels of proinflammatory cytokines in response to LPS. Thus, GPNMB acts as a negative regulator of macrophage inflammatory responses.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0022-1767
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
178
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6557-66
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:17475886-Animals, pubmed-meshheading:17475886-Bone Marrow Cells, pubmed-meshheading:17475886-Cell Differentiation, pubmed-meshheading:17475886-Cell Line, pubmed-meshheading:17475886-Cell Line, Tumor, pubmed-meshheading:17475886-Conserved Sequence, pubmed-meshheading:17475886-Eye Proteins, pubmed-meshheading:17475886-Feedback, Physiological, pubmed-meshheading:17475886-Humans, pubmed-meshheading:17475886-Inflammation Mediators, pubmed-meshheading:17475886-Interferon-gamma, pubmed-meshheading:17475886-Lipopolysaccharides, pubmed-meshheading:17475886-Macrophage Activation, pubmed-meshheading:17475886-Macrophages, pubmed-meshheading:17475886-Membrane Glycoproteins, pubmed-meshheading:17475886-Mice, pubmed-meshheading:17475886-Mice, Inbred C57BL, pubmed-meshheading:17475886-Mice, Inbred DBA, pubmed-meshheading:17475886-Mice, Mutant Strains, pubmed-meshheading:17475886-RNA, Messenger, pubmed-meshheading:17475886-Repressor Proteins
pubmed:year
2007
pubmed:articleTitle
Gpnmb is induced in macrophages by IFN-gamma and lipopolysaccharide and acts as a feedback regulator of proinflammatory responses.
pubmed:affiliation
Cooperative Research Centre for Chronic Inflammatory Diseases and Special Research Centre for Functional and Applied Genomics, Institute for Molecular Bioscience, University of Queensland, Queensland, Australia.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't