Project description:Genome wide DNA methylation profiling of anti-VEGF resistant SKOV3 tumor samples treated with B20 and/or Azacytidine. The Illumina Infinium 450k Human DNA methylation Beadchip v1.2 was used to obtain DNA methylation profiles across approximately 450,000 CpGs in SKOV3 tumors. Samples included 2 control IgG, 2 Azacytidine, 2 B20 and 2 B20+Azacytidine treated SKOV3ip1 tumors.
Project description:The microtubule-stabilising drug paclitaxel has activity in relapsed ovarian cancer. However, resistance frequently develops. Oncolytic adenoviruses are a novel cancer therapy, and replicate selectively within and lyse malignant cells, leading to productive infection of neighbouring cells. We found increased efficacy of adenoviruses of multiple subtypes in paclitaxel-resistant ovarian cancer cells. There was increased expression of a key adenovirus receptor, CAR (coxsackie adenovirus receptor), due to increased transcription that resulted from histone modification. Moreover, CAR transcription increased in intraperitoneal xenografts with acquired paclitaxel resistance and in tumours from patients with paclitaxel-resistant ovarian cancer. Finally, we identified dysregulated cell cycle control as a second mechanism of increased adenovirus efficacy in paclitaxel-resistant ovarian cancer and that inhibition of CDK4/6 using PD-0332991 was able both to reverse paclitaxel resistance and reduce adenovirus efficacy. Thus, paclitaxel resistance increases oncolytic adenovirus efficacy via at least two separate mechanisms. Parental SKOV3 and paclitaxel-resistant SKOV3-TR cells were analysed in duplicate
Project description:The goals of this study are to compare the transcriptome differences between SKOV3 and rhCCL20-treated SKOV3 cells and identify the defferential expressed genes regulated by rhCCL20 in SKOV3 cells. We treated SKOV3 cells with 5% trehalose (control group) and rhCCL20 protein dissolved in 5% trehalose (experimental group) in vitro. The cells were collected 24 hours after treatment and used for RNA-sequencing.
Project description:Huh7 cells with expression of Flag-Beclin1 were treated with lipid depletion. An immunoprecipitation assay was performed, and immunoprecipitates were subjected to masspec analysis.
Project description:Molecular mechanisms of anti-cancer activities of BG-P1600-TAT were explored employing genome-wide expression profiling experiments. Human neuroblastoma cell line SK-N-FI and primary cells SKNAS were treated with 30µM of the BG-P1600-TAT for 48 hours, harvested, and total RNA was immediately isolated from three biological replicates of control (vehicle-treated) and BG-P1600-TAT-treated cells. Gene expression profiling experiments identified 14-gene BG-P1600-TAT molecular interference signature captured most biologically important significantly enriched records reflecting the putative molecular mechanisms of anti-cancer activities of the BG-P1600-TAT. In BG-P1600-TAT treated SK-N-FI cells, 753 differentially expressed genes (DEGs) were identified compared to control vehicle-treated cells. Among 753 DEGs, 427 genes were down-regulated and 326 genes were up-regulated. In SKNAS cells, BG-P1600-TAT showed a significant effects on signal transduction pathways activated during cellular responses to IL-1alpha, TNF-alpha, EGF, TGF, PDGF, and AR. Further BG-P1600-TAT also showed a significant effect on multiprotein complexes of potential biological and therapeutic significance, including several complexes engaged during apoptosis (BCL-2 family protein complex; Survivin complex; BAX complex; Caspase complex), angiogenesis (VEGF-A complex; Thrombospondin complex), and cell adhesion (Galectin complex; Integrin alpha/beta complexes).
Project description:Single-cell RNA-seq analysis of bioengineered human bone marrow leukemia chip established with human B-ALL cells (REH, ATCC), Human umbilical vein cells (HUVECs, Lonza), Human mesenchymal stem cells (hMSC, Lonza), Human Bone marrow mononuclear cells (STEMCELL Technologies), and Human MSC osteoblasts (Lonza) using the reported Leukemia-on-a-Chip method treated with Healthy donor derived CAR Tcells, Patient derived CAR T cells, Mock T cells, and or left non-treated.
Project description:Transcriptomic analysis of tumor tissues isolated from animals bearing F9 teratocarcinoma. 129Sv mice were challenged with F9 tumor cells and, when tumors were palpable, mice were treated with EDA CAR-T s (a mixture of 1×107 CD4+ and 2×106 CD8+ CAR-T cells)or left untreated. 14 days after adoptive transfer, RNA was isolated from tumors for their transcriptomic analysis.
Project description:To investigate the activation of CAR-macrophages by the antigen CEA, we treated CAR-macrophages with CEA and detected them by RNA-Seq.
Project description:Chimeric antigen receptor T-cell (CAR-T) therapy is at the forefront of cell immunotherapy. In this study, we generated an anti-CD19 CAR-Jurkat T cell line using a locally produced second-generation CD19 CAR construct, enabling us to analyze early proteomic changes crucial for understanding the signaling pathways and mechanisms of action of this CAR-T cell. SILAC-heavy tagged RAJI B-cells and anti-CD19 CAR-Jurkat T-cells were co-cultured for ten minutes. The proteomic profiles were obtained via DIA methodology on the Orbitrap Astral LC-MS/MS platform. The proteome was extensively covered, resulting in approximately 8800 protein identifications at 1% FDR. The effector CAR-Jurkat cells showed proteomic changes involving antigen presentation by CD74. The target RAJI B-cells exhibited more significant alterations, such as CD28, essential for T-cell survival and activation.
