title: Chondrocytic differentiation of peripheral neuroectodermal tumor cell line in nude mouse xenograft.
abstract: We have established a cell line (KU-SN) from a peripheral neuroectodermal tumor originating in the left scapula of a 4-year-old girl. The original tumor was immunoreactive with antibodies for neurofilament proteins, neuron-specific enolase, vimentin, S100 protein, and beta 2-microglobulin. Dense core granules, 50-150 nm in diameter, were identified by electron microscopy. The cell line was established from tumor cells in metastatic lung fluid. KU-SN cells were immunoreactive with the antibodies for neurofilament proteins, vimentin, neuron-specific enolase, S100 protein, glial fibrillary acidic protein, cytokeratin, and carcinoembryonic antigen. Besides these neuronal features, KU-SN cells express type 2 collagen and insulin-like growth factor 1 receptor. The addition of insulin-like growth factor 1 (100 ng/ml) increased the growth rate of KU-SN cells 2.1-fold over control. Some cells were positive for Alcian blue and alkaline phosphatase staining. Cytogenetic analysis of KU-SN cells disclosed a reciprocal chromosomal translocation [t(11,22)]. Northern blot analysis of KU-SN cells demonstrated amplified expression of the c-myc gene but not the N-myc gene. When tumor cells were transplanted into nude mice, cartilage was formed. The cartilage was immunoreactive with the antibody for HLA-ABC, indicating that it was derived from the tumor cells, not from mouse tissue. Chondrocytic differentiation was not observed in xenografts of Ewing's sarcoma cell lines SK-ES or RD-ES or the peripheral neuroectodermal tumor cell line SK-N-MC. These results indicate that KU-SN cells represent primitive neural crest cells having the potential for chondrocytic differentiation.
authors.affiliation: Department of Pediatrics, Kobe University School of Medicine, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Goji
authors.forename: K
authors.initials: K
authors.lastname: Sano
authors.forename: H
authors.initials: H
authors.lastname: Nakamura
authors.forename: H
authors.initials: H
authors.lastname: Ito
mesh_terms: D000818:Animals; D001483:Base Sequence; D001859:Bone Neoplasms / Q000235:genetics* / Q000473:pathology* / Q000648:ultrastructure; D002356:Cartilage / Q000166:cytology / Q000473:pathology*; D002454:Cell Differentiation; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D002675:Child, Preschool; D002880:Chromosomes, Human, Pair 11; D002892:Chromosomes, Human, Pair 22; D003094:Collagen / Q000235:genetics*; D046508:Culture Techniques / Q000379:methods; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D005091:Exons; D005260:Female; D016259:Genes, myc; D006801:Humans; D007150:Immunohistochemistry; D007334:Insulin-Like Growth Factor I / Q000494:pharmacology; D051379:Mice; D008819:Mice, Nude; D008969:Molecular Sequence Data; D009368:Neoplasm Transplantation; D009373:Neoplasms, Germ Cell and Embryonal / Q000235:genetics* / Q000473:pathology* / Q000648:ultrastructure; D016900:Neurofilament Proteins / Q000032:analysis; D009838:Oligodeoxyribonucleotides; D016133:Polymerase Chain Reaction / Q000379:methods; D012313:RNA / Q000235:genetics / Q000302:isolation & purification; D012333:RNA, Messenger / Q000032:analysis / Q000235:genetics; D016212:Transforming Growth Factor beta / Q000494:pharmacology; D014178:Translocation, Genetic; D014183:Transplantation, Heterologous
chemical_list: D016900:Neurofilament Proteins; D009838:Oligodeoxyribonucleotides; D012333:RNA, Messenger; D016212:Transforming Growth Factor beta; D012313:RNA; D007334:Insulin-Like Growth Factor I; D003094:Collagen