Project description:Application of a melanoma experimental metastasis model to elucidate molecular mediators of melanoma brain metastasis. Malignant melanoma frequently metastasizes to the brain. The molecular mediators of brain metastasis still remains largely unknnown. Two melanoma cell lines (opposing phenotypes in vitro: invasive/proliferative) were injected (L.V) into immune-compromised animals to generate organ-specific in vivo metastatic tumor cells and host tissue. Immunomagnetic separation was applied to separate tumor cells from host stroma. A rat model was applied to generate organ-specific profiles. Subsequently, a mouse model was applied to generate in vivo brain metastatic samples to follow altered gene expression in melanoma colonizing the brain over time. Gene expression data was collected from human and animal host-specific arrays.
Project description:b'Metabolic alternations were investigated by applying Ultra Performance Liquid Chromatography Mass Spectrometry (UPLC-MS) to mice brain tissue samples collected from SmoA1-Math-GFP mice with (n=18) and without (n=7) metastasis. All samples were analyzed using reverse phase (RP) UPLC-MS analysis in positive and negative ion modes.'