Project description:Trabectedin triggered apoptosis in primary MM cells and MM cell lines in both 2D and 3D in vitro assays To shed light on molecular mechanisms underlying the anti-MM activity of trabectedin, modifications in the gene expression profile of U266 cells, untreated or treated with 2.5 nM of trabectedin for 24 h were evaluated.
Project description:All-trans retinoic acid (ATRA) is important for sensitizing MM cells to carfilzomib (Cfz). To determine what signalling pathways are affected by ATRA in Cfz-treated MM cells, MM.1S MM cell line was pulsed with Cfz and then cultured with DMSO or 10µM ATRA for 12 h. Total RNAs of 2 x 106 MM.1S cells were extracted by RNeasy Mini Kit (Qiagen). 5-10 µg RNA samples were sent to Gene Expression and Genotyping Facility at Case Western Reserve University (Cleveland, OH) for genearray followed by data analysis. We use microarray data to determine differential expression of genes in Cfz-treated MM cells in culture with DMSO and ATRA.
Project description:Metformin is a drug used in the treatment of type 2 diabetes mellitus. Various studies have elucidated its anticancer properties. In this study, the effect of metformin on the differentiation and tumor microenvironment of colorectal cancer cells (CRC) was evaluated. For our study, we have used HCT116 colorectal cancer cell line and treated the cells with Metformin. Maximum tolerable non-toxic dose of metformin on HCT116 cells was determined by MTT assay. Cells were treated with 2.5 mM Metformin for 2 weeks. Analysis of apoptosis was done by flow cytometry using Annexin V / PI. CSC population was determined by flow cytometry using CSC markers CD44 and CD166. Metformin's ability to induce differentiation in CSC was assessed by analyzing Cytokeratin 20 (CK20) by flow cytometry and CDX1 (transcription factor for CK20), by RT-QPCR. Expression of Ki67 (proliferation marker) was done by RT-QPCR. RNA was isolated from 2.5 mM Metformin-treated and untreated cells populations. Microarray of untreated and 2.5 mM Metformin-treated RNA was done to study the whole genome transcriptomic changes.
Project description:Purpose: We applied RNA sequencing technology for high-throughput analysis of transcriptional changes within human MM cell lines JJN3 and U266 due to individual and combination drug treatment. Methods: JJN3 and U266 cells were treated with pan-HDACi panbobinostat, DNMTi 5-Azacytidine, panobinostat+5-Azacytidine or NMP for 4h or 24h in triplicate and transcriptional changes assessed by RNAseq using Illumina HiSeq platform. Specifically, JJN3 cells were treated with 10nM panobinostat, 2.5µM 5-Azacytidine, panobinostat+5-Azacytidine (at given doses), or 10mM NMP. U266 cells were treated with 10nM panobinostat, 10µM 5-Azacytidine, panobinostat+5-Azacytidine (at given doses), or 10mM NMP. Results: We report unique and overlapping transcriptional signatures that lead to the induction of apoptosis in human MM cell lines in a cell-specific manner due to individual or combination treatments. Conclusions: A detailed analysis of differential transcriptional events in human MM cell lines due to HDACi, DNMTi, HDACi+DNMTi and NMP appear to define the molecular events leading to apoptosis and drug mechanism of action.
Project description:We have measured the proteomic changes on ANBL6, IH1, INA6, U266, KJON, OH2, VOLIN, LR5, KARPAS, RAMOS cell lines and used it to build a super SILAC library in order to quantify proteomic changes from MGUG to MM stages of Myeloma with Elite orbitrap mass spetrometer.
Project description:Melphalan-induced modulation of miR-221/222 levels in MM cells. Melphalan-resistant U266/LR7 cells showed the highest induction of miR-221/222 after drug exposure. To study the transcriptome perturbation induced in MM cells following the combination of miR-221/222 inhibitors plus melphalan we used the whole gene expression data
Project description:We used microarrays to examine changes in gene expression in multiple myeloma cell lines following treatment with arsenic trioxide and darinaparsin Experiment Overall Design: Four multiple myeloma cell lines (U266, MM.1s, KMS11, 8226/S) were treated with either arsenic trioxide (ATO) for 6, 24, or 48 hours or darinaparsin (DAR) for 6 or 24 hours; RNA was extracted from treated and control cells for microarray analysis