RNA-seq of human cell line HepG2 edited with CRISPR and treated with splice-switching oligo inhibiting a pseudoexon in PCCA against control SSO and control HepG2 cells
Ontology highlight
ABSTRACT: Cellular models of propionic acidemia were generated using HepG2 cells that were edited by CRISPR gene editing to introduce the pathogenic PCCA c.1285-1416A>G variant associated with propionic acidemia, and a 7 bp deletion of a predicted hnRNP A1 binding motif (c.1285-1411delTAGAACA), which causes complete and partial activation of an 84 bp pseudoexon from intron 14 in the PCCA gene, respectively. Treatment by transfection of splice-switching antisense oligonucleotides (SSO) to block inclusion of the PCCA pseudoexon in mRNA, was used to investigate this as a potential therapeutic strategy.
Project description:To compare the impact of TP53 mutant variants in exon-wide mutant cell libraries, comprehensive mutome libraries of TP53 affecting the Exons 5, 6, 7 and 8 were generated systematically by CRISP/Cas9 editing in HCT116 colorectal carcinoma cells.
Project description:The study identifies genes that are regulated by the loss of the chromatin remodeller subunit ARID1A in colorectal cancer cell lines. This gene is frequently mutated in colorectal cancer.
Project description:Lambda interferons IFNL1-3 mediate antiviral immunity by inducing interferon sensitive genes (ISGs) in epithelial tissues. Contrarily, a variant creating the functional gene IFNL4 is associated with impaired clearance of hepatitis C virus (HCV) despite of higher liver expression of ISGs in untreated HCV patients. We aimed to explore IFNL4 signaling mechanism by comparing expression profiles from human hepatic cell line clones with genetic modifications influencing the ISG signaling pathway (IFNLR1/IL10R2 knockouts, IFNL4/IFNL3 expression stimulation by transfection).
Project description:Investigation of whole genome gene expression level changes in hepatocellular carcinoma cell line hepG2 in regular culture, hepG2-slug in regular culture and hepG2-slug on Matrigel. Whole genome gene expression level changes have been compared in hepatocellular carcinoma cell line hepG2 in regular culture, hepG2-slug in regular culture and hepG2-slug on Matrigel. Roche NimbleGen micro-array analysis was employed to assess global genome expression in HepG2 in regular culture, HepG2-slug in regular culture and HepG2-slug on Matrigel. The results demonstrated that the up-regulated genes and the down-regulated genes increased significantly when HepG2-slug cells with VM forming ablity were cultured on Matrigel and formed VM.
Project description:Tau (MAPT) is a microtubule-associated protein causing frequent neurodegenerative diseases or inherited frontotemporal lobar degenerations. Emerging evidence for non-canonical functions of Tau in DNA protection and P53 regulation suggests its involvement in cancer. Indeed, Tau expression correlates with cancer-specific survival or response to microtubule therapeutics. These data may imply common molecular pathways involved in the pathogenesis of neurodegenerative disorders and cancer. To bring new evidence that Tau represents a key protein in cancer, we present an in silico pan-cancer analysis of MAPT transcriptomic profile in over 11000 clinical samples and over 1300 pre-clinical samples provided by the TCGA and the DEPMAP datasets respectively. We completed this analysis by exploring a possible interplay of MAPT with wild-type or mutated P53. Then, we calculated the impact of MAPT expression on clinical outcome and drug response. Overall, the results support a relevant role of the MAPT gene in several cancer types, although the contribution of Tau to cancer appears to very much depend on the cellular context.
Project description:To compare the impact of TP53 mutant variants in exon-wide mutant cell libraries, comprehensive mutome libraries of TP53 affecting the Exons 5, 6, 7 and 8 were generated systematically by CRISP/Cas9 editing in HCT116 colorectal carcinoma cells.
Project description:We identified human NOTUM, a new member of beta-catenin target gene. The aim of this analysis is to examine downstream genes of NOTUM. Keywords: Gene expression analysis in response to RNA interference HepG2 cells with RNAi duplexed were used. One control (control-low GC) and 2 RNAi duplexes (NOTUM RNAi#1 and #2) for NOTUM silencing were added to HepG2 cells, and total RNAs were isolated at 72 hours after transfection.
Project description:Expression analysis in HepG2 and IMR90 cells in presence of Fluc siRNA or sPom121 or Nup98 siRNA Transfect siRNA - extract RNA 72 hrs post transfection
Project description:Insulin degrading enzyme (IDE) is a major enzyme responsible for insulin degradation in the liver. The modulation of insulin degrading enzyme activity is hypothesized to be a link between T2DM and liver cancer. Results provide insight into role of IDE in proliferation and other cell functions. HepG2 cells were transfected with 96nM siRNA for IDE or AllStars Negative Control siRNA (Qiagen) using Lipofectamine 2000 (Invitrogen). 16 h after transfection, cells were treated with 10 nM insulin (Sigma Aldrich) or vehicle for 24 h in serum starvation condition. Total RNA was extracted. For each of the 4 conditions, 3 biological replicates were included.