{"product_id":"human-osteoblasts-rheumatoid-arthritis-hob-ra-bhc18500258","title":"Human Osteoblasts-Rheumatoid Arthritis (HOb-RA)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eHuman Osteoblasts-Rheumatoid Arthritis (HOb-RA)\u003c\/strong\u003e is a cell model used for research applications where physiologically relevant identity and donor background support interpretation of experimental readouts. Human osteoblast derived from Bone (Osteoblasts-Rheumatoid Arthritis) associated with rheumatoid arthritis (RA) within the Musculoskeletal system.\u003c\/p\u003e\n\u003cp\u003eBone is a dynamic tissue, being continuously remodeled by the coordinated actions of osteoclasts and osteoblasts. Osteoblasts, the bone-forming cells, are derived originally from pluripotent mesenchymal stem cells. They synthesize and secrete organic extracellular matrix, osteoid, which is composed primarily of type I collagen. Osteoid is calcified by osteoblasts and during this process the cells become encased in lacunae within the calcified material and become osteocytes. Osteoblasts express protease-activated receptor-1 and vascular endothelial cell growth factor [1]. Studies show that leukemia inhibitory factor can bind to the osteoblast cell surface and induce bone formation both in vitro and in vivo [2]. The balance between osteoblast recruitment, proliferation, differentiation and apoptosis in sutures between cranial bones is essential for calvarial bone formation [3]. iXCells Biotechnologies provides high quality Human Osteoblasts-Rheumatoid Arthritis (HOb-RA), which are isolated from bone of patients with rheumatoid arthritis (RA) and cryopreserved at P2, with \u0026gt;0.5 million cells in each vial. RA provide an excellent model system to study the patophisiology of that disease in vitro, including matrix mineralization, effects of inflammatory mediators and bone morphogenic proteins, physiological control of bone remodeling and regulation of bone metabolism. HOb-RA are characterized by the cytochemical detection of AP and mineral deposition. These HOb-RA are negative for HIV-1, HBV, HCV, mycoplasma, bacteria, yeast, and fungi and can further expand for 10 population doublings in Osteoblast Growth Medium (Cat# MD-0054) under the condition suggested by iXCells Biotechnologies.\u003c\/p\u003e\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCell identity:\u003c\/strong\u003e osteoblast (Primary Cells, Custom Cells)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSource context:\u003c\/strong\u003e Bone; Osteoblasts-Rheumatoid Arthritis; Musculoskeletal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDonor background:\u003c\/strong\u003e Disease\/condition: rheumatoid arthritis (RA)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBiosafety level:\u003c\/strong\u003e BSL-2 (follow your institution’s biosafety program and local regulations)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProduct-specific elements (such as tissue source, donor background, and cell classification) help frame how results should be interpreted across assays and experimental conditions.\u003c\/p\u003e\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eCells originating from the Musculoskeletal system are commonly studied to understand tissue-specific physiology, signaling, and responses to perturbations in controlled in vitro settings.\u003c\/p\u003e\u003cp\u003eAcross primary and specialty cell models, experimental outcomes can be influenced by donor heterogeneity, passage history, confluence, and media composition. For interpretation, it is common to validate key markers or functional phenotypes in the user’s assay context and to document culture variables consistently.\u003c\/p\u003e\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eIncreasing use of primary and specialty cells to improve translational relevance for target biology and phenotypic screening.\u003c\/li\u003e\n  \u003cli\u003eAdoption of 3D culture formats and co-culture systems to better capture tissue microenvironments and cell–cell interactions.\u003c\/li\u003e\n  \u003cli\u003eIntegration of functional readouts with single-cell and multi-omics profiling to connect phenotype with molecular state.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eProfile identity markers by flow cytometry or immunostaining in cultured cells\u003c\/li\u003e\n  \u003cli\u003eQuantify functional responses to defined stimuli relevant to the model system\u003c\/li\u003e\n  \u003cli\u003eCompare baseline phenotype across donors\/conditions using gene expression profiling\u003c\/li\u003e\n  \u003cli\u003eEvaluate matrix remodeling and differentiation programs in musculoskeletal cell models\u003c\/li\u003e\n  \u003cli\u003eModel disease-associated phenotypes and compare responses to matched controls (assay dependent)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation typically focuses on how a perturbation (e.g., cytokine exposure, metabolic stress, genetic manipulation, or compound treatment) shifts marker profiles or functional readouts relative to an appropriate control matched for donor and culture variables.\u003c\/p\u003e\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDonor-to-donor heterogeneity can influence baseline phenotype and treatment response; include biological replicates when feasible.\u003c\/li\u003e\n  \u003cli\u003ePassage number, confluence, and media composition can shift gene expression and functional readouts; track and report these variables consistently.\u003c\/li\u003e\n  \u003cli\u003eContamination control (including routine mycoplasma monitoring) supports reproducibility in downstream assays.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate negative\/positive controls for the readout (e.g., unstimulated controls, pathway agonists\/antagonists) to contextualize observed changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- ATCC Animal Cell Culture Guide — ATCC — https:\/\/www.atcc.org\/resources\/culture-guides\/animal-cell-culture-guide\n- Cell Line Authentication — ATCC — https:\/\/www.atcc.org\/resources\/culture-guides\/cell-line-authentication\n- Biosafety in Microbiological and Biomedical Laboratories (BMBL) — U.S. HHS\/CDC\/NIH — https:\/\/www.cdc.gov\/labs\/BMBL.html\n- Mycoplasma contamination in cell culture — NCBI Bookshelf\/PMC — https:\/\/www.ncbi.nlm.nih.gov\/pmc\/\n- Primary cell culture considerations — Nature Methods — https:\/\/www.nature.com\/nmeth\/\n- Good cell culture practice guidelines — OECD\/ECVAM (concept) — https:\/\/www.oecd.org\/\n--\u003e\n\u003cp style=\"display:none\"\u003eSKU:BHC18500258\u003c\/p\u003e","brand":"iXCells Biotechnologies","offers":[{"title":"Cryopreserved \/ Inquire about custom lot sizes, package sizes and marker characterization","offer_id":53197816103277,"sku":"10HU-183","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/10HU-183.png?v=1782157705","url":"https:\/\/www.ebiohippo.com\/products\/human-osteoblasts-rheumatoid-arthritis-hob-ra-bhc18500258","provider":"BioHippo","version":"1.0","type":"link"}