title: [GeneChip analysis for osteoimmunology].
abstract: The interdisciplinary field called osteoimmunology has attracted much attention, due to the observations that bone destruction is caused by an abnormal activation of the immune system in rheumatoid arthritis, and mice lacking immunomodulatory molecules often exhibit an unexpected bone phenotype. Osteoclasts are cells of monocyte/macrophage origin that degrade the bone matrix in health and disease. Receptor activator of NF-kappaB ligand (RANKL), a tumor necrosis factor (TNF) family cytokine, is an essential osteoclastogenic factor linking the bone and the immune system. In the genomewide screening of RANKL-inducible genes using GeneChip, we identified nuclear factor of activated T cells c1 (NFATc1) as the master transcription factor for osteoclastogenesis. We also applied the GeneChip method to the analysis of osteoimmunological regulation: analysis of costimulatory signal for RANKL and the target genes of antirheumatic drugs. Here we summarize our recent findings in the field of osteoimmunology obtained by GeneChip.
authors.affiliation: Department of Cell Signaling, Graduate School, Center of Excellence Program, Tokyo Medical and Dental University.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Takayanagi
mesh_terms: D000818:Animals; D001172:Arthritis, Rheumatoid / Q000276:immunology / Q000473:pathology; D001862:Bone Resorption; D001842:Bone and Bones / Q000276:immunology*; D002352:Carrier Proteins / Q000235:genetics* / Q000502:physiology*; D004268:DNA-Binding Proteins / Q000502:physiology*; D020869:Gene Expression Profiling; D008562:Membrane Glycoproteins / Q000235:genetics* / Q000502:physiology*; D051379:Mice; D050778:NFATC Transcription Factors; D009687:Nuclear Proteins / Q000502:physiology*; D020411:Oligonucleotide Array Sequence Analysis; D010010:Osteoclasts / Q000473:pathology; D053245:RANK Ligand; D012333:RNA, Messenger / Q000096:biosynthesis; D053246:Receptor Activator of Nuclear Factor-kappa B; D015398:Signal Transduction; D014157:Transcription Factors / Q000502:physiology*
chemical_list: D002352:Carrier Proteins; D004268:DNA-Binding Proteins; D008562:Membrane Glycoproteins; D050778:NFATC Transcription Factors; C494005:Nfatc1 protein, mouse; D009687:Nuclear Proteins; D053245:RANK Ligand; D012333:RNA, Messenger; D053246:Receptor Activator of Nuclear Factor-kappa B; C505687:Tnfrsf11a protein, mouse; C505689:Tnfsf11 protein, mouse; D014157:Transcription Factors