title: Malignant osteopetrosis: c-src kinase is not reduced in fibroblasts.
abstract: Targeted disruption of the c-src gene leads to a severe form of osteopetrosis in mice [2]. As the c-src gene is expressed in all tissues and cells tested, we have analyzed fibroblasts from three individuals with malignant, congenital osteopetrosis for the expression of c-src at the protein level. No differences could be detected in c-src protein and c-src kinase activity levels between fibroblasts from healthy controls and affected individuals. Thus, impairment of c-src function as an etiological factor in human osteopetrosis appears unlikely in the individuals investigated.
authors.affiliation: Department of Pathology, University Hospital, Uppsala, Sweden.
authors.forename: G
authors.initials: G
authors.lastname: Meyerson
authors.forename: N
authors.initials: N
authors.lastname: Dahl
authors.forename: S
authors.initials: S
authors.lastname: Påhlman
mesh_terms: D000081247:CSK Tyrosine-Protein Kinase; D002478:Cells, Cultured; D004591:Electrophoresis, Polyacrylamide Gel; D005347:Fibroblasts / Q000737:chemistry / Q000201:enzymology*; D006801:Humans; D010022:Osteopetrosis / Q000201:enzymology* / Q000235:genetics; D011233:Precipitin Tests; D011505:Protein-Tyrosine Kinases / Q000378:metabolism*; D016392:Proto-Oncogene Proteins pp60(c-src) / Q000032:analysis; D019061:src-Family Kinases
chemical_list: D011505:Protein-Tyrosine Kinases; D000081247:CSK Tyrosine-Protein Kinase; D016392:Proto-Oncogene Proteins pp60(c-src); D019061:src-Family Kinases; C000631346:CSK protein, human