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Establishment and characterization of a human gastrointestinal stromal tumour (GIST) xenograft in athymic nude mice. 2009

Mona-Elisabeth Revheim, and Therese Seierstad, and Jeanne-Marie Berner, and Oyvind Sverre Bruland, and Kathrine Røe, and Hege Oma Ohnstad, and Bodil Bjerkehagen, and Tore Bach-Gansmo
Department of Nuclear Medicine, Rikshospitalet, Oslo University Hospital, 0027 Oslo, Norway. mona.elisabeth.revheim@radiumhospitalet.no

BACKGROUND The majority of gastrointestinal stromal tumours (GISTs) contain oncogenic KIT (v-kit Hardy-Zuckerman 4 feline sarcoma viral oncogene homolog) or platelet-derived growth factor-alpha (PDGFRA) receptor tyrosine kinase (TK) mutations and are initially, but only temporarily sensitive to TK inhibitors. The aim of this study was to establish and characterize a human GIST xenograft that could be used for evaluating various molecularly targeted therapies. METHODS GIST tissue from four patients was implanted under the skin of athymic nude mice. In one case a tumour line was established. RESULTS The xenograft showed characteristic GIST morphology and exhibited the same mutation profile as that of the patient. CONCLUSIONS A human GIST xenograft with mutation in KIT exons 11 and 17 has been established and maintained in nude mice for 3 years (13 passages). This model will enable further studies on mechanisms of resistance, combination therapies and allow testing of novel targeted therapies.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D007621 Karyotyping Mapping of the KARYOTYPE of a cell. Karyotype Analysis Methods,Analysis Method, Karyotype,Analysis Methods, Karyotype,Karyotype Analysis Method,Karyotypings,Method, Karyotype Analysis,Methods, Karyotype Analysis
D008297 Male Males
D008819 Mice, Nude Mutant mice homozygous for the recessive gene "nude" which fail to develop a thymus. They are useful in tumor studies and studies on immune responses. Athymic Mice,Mice, Athymic,Nude Mice,Mouse, Athymic,Mouse, Nude,Athymic Mouse,Nude Mouse
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D010879 Piperazines Compounds that are derived from PIPERAZINE.
D011743 Pyrimidines A family of 6-membered heterocyclic compounds occurring in nature in a wide variety of forms. They include several nucleic acid constituents (CYTOSINE; THYMINE; and URACIL) and form the basic structure of the barbiturates.
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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