Project description:Desulfurella amilsii is an acidotolerant sulfur-reducing bacterium isolated from sediments of an acidic river. It can grow in a broad range of pH and can obtain energy via respiring elemental sulfur or thiosulfate, as well as by disproportionating elemental sulfur. Its genome encodes the enzyme sulfur reductase, and several rhodanese-like proteins, possibly playing a role in sulfur respiration and disproportionation. Thiosulfate reductase and dissimilatory sulfite reductase are encoded and might play a role during the respiration of thiosulfate. The involvement of these enzymes in the reductive routes of sulfur metabolism is not yet clearly understood. Desulfurella amilsii was used in this study to combine strategies for sulfur metabolism research on the protein level to shed some light on the pathways involved in the metabolism of this microorganism.
Project description:Purpose: To identify gene expression patterns in ex vivo isolated human Tr1 cells. Method: RNA sequencing of total mRNA. Results: Differential gene expression of Tr1 and non-Tr1 CD4+ T memory cells. Conclusions: ex vivo type 1 regulatory T cells have a distinct gene expression profile compared to non-Tr1 CD4+ T cell memory cells.
Project description:This experiment was to determine if we could observe changes in gene expression following the attenuation of one of the primary redox regulators of cells - thioredoxin reductase 1. The experiment was set up with two cell lines that expressed different basal levels of TR1. LOX cells represent an aggressive melanoma in xenograft models and are high expressors of TR1 while SK Mel-28 cells represent a non-aggressive melanoma in xenografts adn are low expressors of TR1. The experimental design was to set up direct comparisons for melanoma cells with the induction of a control miRNA or the miRNA directed against TR1 - with an evaluation of the uninduced situation. Melanoma cell lines stabily transfected with tetracyclin-inducible microRNA - directed at either control, or to TR1.
