Project description:We knocked out different exons corresponding to different sections of GABP, a transcription factor known to bind to the telomerase reverse transcriptase (TERT) promoter with the G228 mutation. We investigated the effects of the knockouts in the regulation of TERT expression and other subunits of GABP. GABP genomic binding sites were determined through chromatin immunoprecipitation sequencing (ChIP-seq), and gene expression was determined through total RNA sequencing (RNA-seq). Combining data pertaining to GABP binding sites and gene expression provided insight into the molecular mechanisms of maintaining the length of telomeres in cancers.
Project description:We knocked out different exons corresponding to different sections of GABP, a transcription factor known to bind to the telomerase reverse transcriptase (TERT) promoter with the G228 mutation. We investigated the effects of the knockouts in the regulation of TERT expression and other subunits of GABP. GABP genomic binding sites were determined through chromatin immunoprecipitation sequencing (ChIP-seq), and gene expression was determined through total RNA sequencing (RNA-seq). Combining data pertaining to GABP binding sites and gene expression provided insight into the molecular mechanisms of maintaining the length of telomeres in cancers.
Project description:We performed RNA-seq based transcriptomic analysis to evaluate differential protein expression in the kidneys of GABP overexpressing mice in db/m and GABP knockdown mice in db/db. The cluster analysis heat map shows the genetic changes . Compared with db/m mice, 734 differentially expressed genes, 525 upregulated genes and 209 upregulated genes . Compared with db/db mice, 82 genes were up-regulated and 82 genes were down-regulated in the kidneys of mice with GABP knockdown in db/db . Further, the classical pathway map in IPA database found that cell growth, proliferation, organ development and other pathways were activated after GABP overexpression. Cell growth, proliferation, organ development and other pathways were inhibited . It was further confirmed that GABP was associated with proliferation. Among differentially expressed genes, there were 9 differentially expressed genes up-regulated by GABP overexpression and down-regulated by GABP knockdown . Through the analysis of Ingenuity Pathway Analysis database, GABP and GLI1 were most closely related .
Project description:We identified a total of 2,058 GABP-regulated genes (1,067 up-regulated and 991 down-regulated genes in the GABP knockdown cells) with the threshold of Padj < 0.05 and Fold change > 1.5.
Project description:Ets family transcription factor GA-binding protein (GABP) regulates gene expression in CD4 and CD8 T cells. We used microarray to examine genes differentially expressed in GABP-sufficient (WT) and GABP-deficient (KO) CD4 and CD8 T cells
Project description:We used ChIP-Seq to map GABP-alpha binding sites in human hematopoietic progenitor cells (HPCs). Coupled with functional assays using GABP-alpha deficient mouse model and bioinformatics analysis, we systematically determined a transcriptional module controlled by GABP in HPCs.
Project description:We used ChIP-Seq to map GABP-alpha binding sites in human hematopoietic progenitor cells (HPCs). Coupled with functional assays using GABP-alpha deficient mouse model and bioinformatics analysis, we systematically determined a transcriptional module controlled by GABP in HPCs. Examination of the role of GABP in hematopoietic stem cells