title: Characterization of a cell line derived from a human giant cell tumor that stimulates osteoclastic bone resorption.
abstract: Giant cell tumors of bone are common but unusual tumors that are comprised of multiple cell types. Most attention has been focused on the giant cells, which resemble osteoclasts morphologically and functionally. This study examines the properties of a cell line derived from mononuclear cells from one of these tumors, since it appears likely that these cells may be able to influence the activities of cells with the osteoclast phenotype. This cell line, C433, has the following characteristics: (1) it represents undifferentiated cells, not recognized by any known antigenic markers for leukocytes; (2) it contains tartrate-resistant acid phosphatase; (3) it responds to the osteotropic factors 1,25 dihydroxyvitamin D3, insulin-like growth factor I and II, but not to parathyroid hormone; (4) it forms sarcomas in nude mice; and (5) it produces an activity that stimulates isolated avian and rat osteoclasts to resorb bone. This cell line may be useful in examining interactions between osteoclasts and accessory cells involved in bone resorption.
authors.affiliation: University of Texas Health Science Center at San Antonio 78284-7877.
authors.forename: R O
authors.initials: RO
authors.lastname: Oreffo
authors.forename: G J
authors.initials: GJ
authors.lastname: Marshall
authors.forename: M
authors.initials: M
authors.lastname: Kirchen
authors.forename: C
authors.initials: C
authors.lastname: Garcia
authors.forename: W E
authors.initials: WE
authors.lastname: Gallwitz
authors.forename: J
authors.initials: J
authors.lastname: Chavez
authors.forename: G R
authors.initials: GR
authors.lastname: Mundy
authors.forename: L F
authors.initials: LF
authors.lastname: Bonewald
mesh_terms: D000469:Alkaline Phosphatase / Q000302:isolation & purification; D000818:Animals; D001859:Bone Neoplasms / Q000378:metabolism*; D001862:Bone Resorption; D002117:Calcitriol / Q000494:pharmacology; D002460:Cell Line; D002645:Chickens; D005260:Female; D018212:Giant Cell Tumor of Bone / Q000378:metabolism*; D006801:Humans; D007334:Insulin-Like Growth Factor I / Q000494:pharmacology; D007335:Insulin-Like Growth Factor II / Q000494:pharmacology; D051379:Mice; D008819:Mice, Nude; D009374:Neoplasms, Experimental; D010010:Osteoclasts / Q000378:metabolism; D010281:Parathyroid Hormone / Q000494:pharmacology; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D010281:Parathyroid Hormone; D007334:Insulin-Like Growth Factor I; D007335:Insulin-Like Growth Factor II; D000469:Alkaline Phosphatase; D002117:Calcitriol