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Characterization of the gene expression changes associated with melanoma-endothelial cell communication

ABSTRACT: Average life expectancy for patients with metastatic melanoma is less than 6 months, and only a handful of treatment options are available. If the disease can be stopped before it spreads to other organs, life expectancy is greatly increased. The goal of this project is to identify possible regulators of melanoma metastasis by determining genes whose expression is modulated when the cells are grown in contact with endothelial cells. Identification of genes involved in this cell-cell communication could have therapeutic implications. Keywords: co-culture

ORGANISM(S): Homo sapiens

PROVIDER: GSE8699 | GEO | 2008/08/02

SECONDARY ACCESSION(S): PRJNA101927

REPOSITORIES: GEO

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Transcription profiling of human melanoma-endothelial cells co-cultured vs controls to investigate cellular communication

Project description:Average life expectancy for patients with metastatic melanoma is less than 6 months, and only a handful of treatment options are available. If the disease can be stopped before it spreads to other organs, life expectancy is greatly increased. The goal of this project is to identify possible regulators of melanoma metastasis by determining genes whose expression is modulated when the cells are grown in contact with endothelial cells. Identification of genes involved in this cell-cell communication could have therapeutic implications. Experiment Overall Design: Using a lentiviral system, melanoma cell line 1205Lu was transduced with GFP, and HUVEC (human umbillical vein endothelial cells) cells at passage 2 were transduced with RFP. These labeled cells were plated at near confluency either alone (controls) or mixed at a 1:1 ratio (co-cultures) for 48 hours in endothelial growth medium (EGM-2, Cambrex). The labeled cells were then sorted by FACS and RNA was collected from all 4 cultures. There are a total of four samples: GFP-1205Lu cells grown alone, GFP-1205Lu cells separated from co-culture with RFP-HUVEC cells, RFP-HUVEC cells grown alone, and RFP-HUVEC cells separated from co-culture with GFP-1205Lu cells. The JHMI Microarray Core was responsible for sample processing and initial data processing using Affymetrix-recommended protocols (Affymetrix GeneChip Expression Analysis Technical Manual, 2004).

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Circulating microRNAs and life expectancy among identical twins

Project description:Objective: To characterize miRNAs in 41-year archived plasma in relation to life expectancy independent of genes. Method: Plasma miRNAs from nine identical male twins were profiled using next-generation sequencing. Results: The average absolute difference in the minimum life expectancy was 9.68 years. Intra-class correlation coefficients were above 0.4 for 50% of miRNAs. Comparing deceased twins with their alive co-twin brothers, the concentrations were increased for 34 but decreased for 30 miRNAs. Conclusion: Identical twins discordant in life expectancy were unlike in the majority of miRNAs, suggesting that environmental factors are pivotal in miRNAs related to life expectancy.

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Genes regulated by nuclear Lipin in the fed and fasting state

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Pressurized Intraperitoneal Aerosol Chemotherapy (PIPAC) and Electrostatic PIPAC (ePIPAC) With Paclitaxel In Patients With Peritoneal Carcinomatosis

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Distinct gene expression patterns of highly and poorly malignant melanocytic tumors from genetically engineered mouse models of mice carrying specific inactivating mutations in Ink4A or ARF respectively

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