Homo sapiens
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA339845 | ENA |
REPOSITORIES: ENA
Similar Datasets
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Project description:AID (activation-induced cytidine deaminase) is expressed at low levels in many tissue types but is most highly expressed in germinal center B cells where it deaminates cytidine to uracil during somatic hypermutation and class switch recombination of the immunoglobulin genes. In addition to this critical role in immune diversification, aberrant targeting of AID contributes to oncogenic point mutations and chromosome translocations associated with B cell malignancies. Thus, to explore a role for AID in DNA demethylation in B cell lymphoma, we performed genome-wide gene expression profiling in BL2 and AID-deficient (AID-/-) BL2 cell lines (Burkitt lymphoma that can be induced to express high levels of AID).
2016-10-01 | GSE85964 | GEO
Project description:AID (activation-induced cytidine deaminase) is expressed at low levels in many tissue types but is most highly expressed in germinal center B cells where it deaminates cytidine to uracil during somatic hypermutation and class switch recombination of the immunoglobulin genes. In addition to this critical role in immune diversification, aberrant targeting of AID contributes to oncogenic point mutations and chromosome translocations associated with B cell malignancies. Thus, to explore a role for AID in DNA demethylation in B cell lymphoma, we performed genome-wide methylation profiling in BL2 and AID-deficient (AID-/-) BL2 cell lines (Burkitt lymphoma that can be induced to express high levels of AID).
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Project description:Gene expression profiling of immortalized human mesenchymal stem cells with hTERT/E6/E7 transfected MSCs. hTERT may change gene expression in MSCs. Goal was to determine the gene expressions of immortalized MSCs.
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Project description:RNA extracted at 240min. Samples are rRNA depleted. Expression measurement of Homo sapiens genes.
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Project description:Transcriptional profiling of human mesenchymal stem cells comparing normoxic MSCs cells with hypoxic MSCs cells. Hypoxia may inhibit senescence of MSCs during expansion. Goal was to determine the effects of hypoxia on global MSCs gene expression.
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Project description:We have sequenced miRNA libraries from human embryonic, neural and foetal mesenchymal stem cells. We report that the majority of miRNA genes encode mature isomers that vary in size by one or more bases at the 3’ and/or 5’ end of the miRNA. Northern blotting for individual miRNAs showed that the proportions of isomiRs expressed by a single miRNA gene often differ between cell and tissue types. IsomiRs were readily co-immunoprecipitated with Argonaute proteins in vivo and were active in luciferase assays, indicating that they are functional. Bioinformatics analysis predicts substantial differences in targeting between miRNAs with minor 5’ differences and in support of this we report that a 5’ isomiR-9-1 gained the ability to inhibit the expression of DNMT3B and NCAM2 but lost the ability to inhibit CDH1 in vitro. This result was confirmed by the use of isomiR-specific sponges. Our analysis of the miRGator database indicates that a small percentage of human miRNA genes express isomiRs as the dominant transcript in certain cell types and analysis of miRBase shows that 5’ isomiRs have replaced canonical miRNAs many times during evolution. This strongly indicates that isomiRs are of functional importance and have contributed to the evolution of miRNA genes
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