Project description:Background Leukemia/lymphoma cell lines have been critical in the investigation of the pathogenesis and therapy of hematological malignancies. While human LL cell lines have generally been found to recapitulate the primary tumors from which they were derived, appropriate characterization including cytogenetic and transcriptional assessment is crucial for assessing their clinical predictive value. Results In the following study, five canine LL cell lines, CLBL-1, Ema, TL-1 (Nody-1), UL-1, and 3132, were characterized using extensive immunophenotyping, karyotypic analysis, oligonucleotide array comparative genomic hybridization (oaCGH), and gene expression profiling. Genome-wide DNA copy number data from the cell lines were also directly compared with 299 primary canine round cell tumors to determine whether the cell lines represent primary tumors, and, if so, what subtype each most closely resembled. Discussion Based on integrated analyses, CLBL-1 was classified as B-cell lymphoma, Ema and TL-1 as T-cell lymphoma, and UL-1 as T-cell acute lymphoblastic leukemia. 3132, originally classified as a B-cell lymphoma, was reclassified as a histiocytic sarcoma based on characteristic cytogenomic properties. In combination, these data begin to elucidate the clinical predictive value of these cell lines which will enhance the appropriate selection of in vitro models for future studies of canine hematological malignancies. GEP using GeneChip Canine Genome 2.0 array (Affymetrix, Santa Clara, CA) Five canine lymphoid cell lines analyzed
Project description:Background Leukemia/lymphoma cell lines have been critical in the investigation of the pathogenesis and therapy of hematological malignancies. While human LL cell lines have generally been found to recapitulate the primary tumors from which they were derived, appropriate characterization including cytogenetic and transcriptional assessment is crucial for assessing their clinical predictive value. Results In the following study, five canine LL cell lines, CLBL-1, Ema, TL-1 (Nody-1), UL-1, and 3132, were characterized using extensive immunophenotyping, karyotypic analysis, oligonucleotide array comparative genomic hybridization (oaCGH), and gene expression profiling. Genome-wide DNA copy number data from the cell lines were also directly compared with 299 primary canine round cell tumors to determine whether the cell lines represent primary tumors, and, if so, what subtype each most closely resembled. Discussion Based on integrated analyses, CLBL-1 was classified as B-cell lymphoma, Ema and TL-1 as T-cell lymphoma, and UL-1 as T-cell acute lymphoblastic leukemia. 3132, originally classified as a B-cell lymphoma, was reclassified as a histiocytic sarcoma based on characteristic cytogenomic properties. In combination, these data begin to elucidate the clinical predictive value of these cell lines which will enhance the appropriate selection of in vitro models for future studies of canine hematological malignancies. GEP using GeneChip Canine Genome 2.0 array (Affymetrix, Santa Clara, CA)
Project description:Cancer cell line panels that incorporate genomic and pharmacologic screening data have become powerful tools for investigating the relationship between gene expression and drug response in human cancer research. Similar cell line panels of such a scale as the NCI60, CCLE, or GDSC do not currently exist in canine cancer research. Here we have assembled a canine cancer cell line panel of 29 cell lines representing multiple tumor types that have undergone gene expression profiling and have begun to be used for pharmacologic screening. RNA was extracted from drug naïve canine cancer cell lines and subjected to microarray analysis.
Project description:Pet dogs may provide a useful large-animal model of spontaneously occuring non-Hodgkin lymphoma, but complete molecular characterization is lacking. We used gene expression microarrays to molecularly characterize canine lymphoma, and found similarities between canine B-cell lymphoma and human diffuse large B-cell lymphoma.
Project description:Pet dogs may provide a useful large-animal model of spontaneously occuring non-Hodgkin lymphoma, but complete molecular characterization is lacking. We used gene expression microarrays to molecularly characterize canine lymphoma, and found similarities between canine B-cell lymphoma and human diffuse large B-cell lymphoma. We isolated RNA from pre-treatment biopsies from dogs with B-cell lymphoma and performed gene expression profiling.
Project description:Cancer cell line panels that incorporate genomic and pharmacologic screening data have become powerful tools for investigating the relationship between gene expression and drug response in human cancer research. Similar cell line panels of such a scale as the NCI60, CCLE, or GDSC do not currently exist in canine cancer research. Here we have assembled a canine cancer cell line panel of 29 cell lines representing multiple tumor types that have undergone gene expression profiling and have begun to be used for pharmacologic screening.