Whole genome scanning of lung tumors and mucosal biopsies on Affymetrix NspI-250K platform
Ontology highlight
ABSTRACT:
ORGANISM(S): Homo sapiens
PROVIDER: GSE29365 | GEO | 2013/01/11
SECONDARY ACCESSION(S): PRJNA140199
REPOSITORIES: GEO
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Project description:Matched normal lymph node, tumors and corresponding mucosal biopsies from 4 lung cancer patients were scrutinized on Affymetrix 250K-NspI array platform. Frequently deleted regions genes were identified based on the LOH call as per manufacturer's guidelines and normalization. Frequently deleted genes in the tumors and mucosa were identified though this approach Affymetrix 250K-NspI- SNP arrays were performed according to the manufacturer's directions on DNA extracted from lung cancer and corresponding mucosal biopsy specimens. LOH analysis was done to identify genes that are frequently deleted.
2013-01-11 | E-GEOD-29365 | biostudies-arrayexpress
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2015-05-21 | GSE68042 | GEO
Project description:Whole genome scanning of lung tumors and mucosal biopsies on Affymetrix NspI-250K platform
| PRJNA140199 | ENA
Project description:Chromosome arm deletions are frequently observed in human cancers. Such large-scale aberrations may trigger phenotypes distinct from those that arise by loss of single genes. Using TALEN-based genomic engineering, we generated cell models with targeted 8p loss-of-heterozygosity (LOH) that mimics an 8p deletion commonly found in breast cancer patients. 8p LOH triggered up-regulation of the mevalonate pathway. The alterations in lipid metabolism led to increased metastatic potential and drug resistance of 8p-deleted cells that are in agreement with poorer survival rates of breast cancer patients harbouting 8p LOH. Our findings also suggest novel therapeutic strategies for treatment of 8p LOH tumors. RNASeq Analysis of two Wt 8p Cell clones vs two 8p LOH cell clones generated via TALEN Approach
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Project description:TERT promoter muatations occur frequently in tumors of various origin. We here accessed the frequency of TERT pomoter mutations in 131 human primary neuroblastomas and 20 human neuroblastoma cell lines. No TERT promoter mutations were found in the 131 primary neuroblastomas. However, in the three cell lines SH-SY5Y, SH-EP and SK-N-SH a TERT promoter mutation was detected. Sanger sequencing indicated a homozygous mutation. To confirm loss of heterozygosity (LOH) we performed Affymetrix CytoScanHD SNP arrays. Indeed LOH could be confirmed. SNP arry experiments were performed according to the standard protocol for Affymetrix CytoScanHD arrays (Affymetrix, Santa Clara). Briefly, a 250 ng sample of genomic DNA was digested with NspI, ligated to adaptors, amplified by PCR, fragmented and biotin-labeled. The labeled samples were hybridized to Affymetrix CytoscanHD arrays, followed by washing, staining and scanning in the Affymetrix GeneChip Scanner 3000. Analysis was performed using the Affymetrix Chromosome Analysis Suite v2.1.
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Project description:aplastic anemia samples tumor using 250K
| EGAD00010000714 | EGA