Project description:We wanted to correlate the protein cargo of secreted exosomes with gene expression pattern in B16-F1 and B16-F1R2. For that purpose, we performed RNA sequencing analysis of B16-F1, B16-F1R2 and B16-F1R2L (Fig.1E). We identified >3000 genes significantly up-regulated and >1000 significantly down-regulated in B16-F1R2 model compared to B16-F1, using a false discovery rate (FDR) of 0.05.
Project description:The FOXC2 transcription factor regulates a variety of developmental and biological processes in both embryonic and adult tissues. Importantly, overexpression or dysregulation of FOXC2 is also associated with oncogenic activity in numerous cancer types, though the function of FOXC2 in the context of melanoma has not been previously investigated. Therefore, the goal of this study was to assess FOXC2's regulation of gene expression in melanoma cells. To this end, we employed CRISPR-Cas9 gene editing technology to disrupt the Foxc2 gene in B16-F1 melanoma, and we performed RNA-seq analysis to assess differential gene expression between the wild-type B16-F1 melanoma cell line and our novel FOXC2-deficient B16-F1ΔFOXC2 gene-edited variant cell line.
Project description:STAT2 is an essential transcription factor in type I interferon (IFN) signaling. STAT2 mediates the antigrowth and apoptotic effects of IFN as demonstrated in cell lines thus leading to the hypothesis that STAT2 has tumor suppressor function. We used microarrays to identify genes in the tumors that are STAT2 dependent and important in anti-tumor immunity. B16-F1 melanoma tumor cells were implanted on the dorsal flank of either wild type (WT) or Stat2KO (S2KO). Tumor growth was monitored during the course of 3 weeks. S2KO mice developed larger tumors when compared to WT mice.
Project description:Genome-wide transcriptional profiling using microarrays was used to compare gene regulation in B16 murine melanoma cells that were: 1) stably transduced with Wnt1-iresGFP; 2) stably transduced with Wnt3A-iresGFP; 3) stably transduced with Wnt5A-iresGFP; and 4) stably transduced with GFP and treated for 72 hours with 10 mM lithium chloride, a pharmacologic activator of canonical Wnt/beta-catenin signaling. Cells were sorted by fluorescence-activated cell sorting (FACS) to obtain populations with relatively equivalent levels of GFP expression. Biologic triplicates were used for each condition, and compared in two-channel hybridization to control RNA obtained from B16 cells expressing GFP (pooled from three biologic replicates).
Project description:Under the hypothesis that subset of parental cells may already harbor metastasis potential, which leads progression of metastasis, we investigated single-cell expression of parental B16 melanoma cell (B16F0) and its highly metastatic subclone (B16F10) (N=4,156) using single-cell RNA sequencing