Project description:we used single-cell transcriptomics and genotyping arrays to characterize 17 neuroblastoma samples across different risk groups and genetic subsets.Fresh samples, obtained from surgical resections and core biopsies, were used for genome variation profiling. DNA extraction from neuroblastoma samples was performed using the DNeasy blood and tissue kit (Qiagen) according to the manufacturer’s protocol. DNA quality was assessed using the Tapestation platform (Agilent). SNP microarray analysis was performed using the Cytoscan HD Array (Affymetrix) and data was processed using the Chromosome Analysis Suite version 3.3.0.139.
Project description:Genome-wide copy number variation profiles were analyzed in the patient-derived gliobastoma cell culture samples. For this purpose, gDNA was analyzed using the CytoScan® assay in combination with a one-color based labeling and hybridization protocol. Signals on the CytoScan® HD microarrays were detected using the Affymetrix GeneChip® 3000 Scanner.
Project description:Genome-wide copy number variation profiles were analyzed in the patient-derived gliobastoma cell culture samples. For this purpose, gDNA was analyzed using the CytoScan® assay in combination with a one-color based labeling and hybridization protocol. Signals on the CytoScan® HD microarrays were detected using the Affymetrix GeneChip® 3000 Scanner.
Project description:Genome-Wide Human SNP Array 6.0 or the CytoScan HD array, according to the manufacturer’s instructions (Affymetrix, Santa Clara, CA, USA) now part of Thermo Fisher Scientific (Thermo Fisher Scientific, Inc.)
Project description:Retinoblastoma is a childhood retinal tumor that initiates in response to biallelic RB1 inactivation. We show that post-mitotic human cone precursors are uniquely sensitive to the oncogenic effects of Rb depletion. Rb knockdown induced cone precursor proliferation in prospectively isolated populations. SNP-array analysis of two Rb/p130-depleted cone precursor cell lines, revealing no megabase-size loss of heterozygosity (LOH) or copy number alterations (CNAs). SNP-array analysis of one Rb/p130-depleted (tumor 1) or one Rb-depleted (tumor 2) cone precursor-derived tumors, revealing no megabase-size LOH or CNAs, consistent with the lack of DNA copy number alterations in some retinoblastomas. Thus, the cone precursor tumors resembled human retinoblastomas at the molecular cytogenetic level. High resolution SNP-array DNA copy number analyses were performed using CytoScan® HD (Affymetrix, 901835) according to the manufacturer's directions. Data were analyzed using Chromosome Analysis Suite 2.0 (Affymetrix). DNA was extracted from two Rb/p130 depleted cone precursor cell lines and two cryopreserved mouse retinoblastoma samples from eyes xenograted with Rb/p130 or Rb depleted cone precursors. Affymetrix SNP analysis on retinoblastoma cell lines Y79, RB176, and WERI were used as control. Normal human genome 19 was used as reference.
Project description:Hybridization-based genomic profiling arrays were performed using Genome-Wide Human SNP Array 6.0 or the CytoScan HD array, according to the manufacturer’s instructions (Affymetrix, Santa Clara, CA, USA) now part of Thermo Fisher Scientific (Thermo Fisher Scientific, Inc.) Following the procedures of sample preparation, hybridization, and scanning, the CEL file of Genome-Wide
Human SNP Array 6.0 was analyzed as previously described (Magrangeas et al. 2012) and the CEL file of CytoScan HD array was analyzed using the Chromosome Analysis Suite (ChAS) software (Thermo Fisher Scientific, Inc).