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Target suppression effect by methylated miRNA

ABSTRACT: To confirme the difference of target supression effect, we transfected non-methylated micro RNA or methylated microRNA in DICER knockout HCT116 cell.

ORGANISM(S): Homo sapiens

PROVIDER: GSE134794 | GEO | 2019/07/25

REPOSITORIES: GEO

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Effect for target mRNA degradation by methylated microRNAs

Project description:To confirme the function of methylated micro RNAs (miR-17 and let-7a), we transfected methylated or non-methylated microRNAs to DICER KO HCT116 cell line. mRNA were isolated at 48 houes after transfection. This data show that the function were different between methylated or non-methylated microRNAs.

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Target suppression effect by methylated miRNA

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Effect for target mRNA degradation by methylated microRNAs

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Epigenetically Silenced Genes Found Using Methylated DNA Immunoprecipitation in Colon Cancer Cells Deficient in DNMTs

Project description:CpG island promoter hypermethylation of tumor suppressor genes is a common hallmark of human cancer, and new large-scale epigenomic technologies might be useful in our attempts to define the complete DNA hypermethylome of tumor cells. Here we report a functional search for hypermethylated CpG islands using the colorectal cancer cell line HCT-116, in which two major DNA methyltransferases, DNMT1 and DNMT3b, have been genetically disrupted (DKOcells). Using methylated DNA immunoprecipitation (MeDIP) methodology in conjunction with promoter microarray analyses we found that DKO cells experience a significant loss of hypermethylated CpG islands. Further characterization of these candidate sequences demonstrates CpG island promoter hypermethylation and silencing of genes with potentially important roles in tumorigenesis, such as the Ras guanine-nucleotide release factor RASGRF2, the apoptosis-associated basic helixloop transcription factor BHLHB9, and the homeobox gene HOXD1. Hypermethylation of these genes occurs already in premalignant lesions and accumulates during tumorigenesis. Thus, our results demonstrate the usefulness of DNMT genetic disruption strategies combined with MeDIP in searching for unknown hypermethylated candidate genes in human cancer that might aid our understanding of the biology of the disease and be of potential translational use. Keywords: Human Proximal Promoter Array; DNA Methylation Comparative experiment: methylated DNA immunoprecipitated/INPUT(Total Genomic DNA) from the colon cancer cell line HCT116 wild type vs methylated DNA imonoprecipitated/INPUT from the colon cancer cell line HCT116 DNMT1/3b doubleknockout (DKO)

2010-05-27 | E-GEOD-9267 | biostudies-arrayexpress

hPTTG1-/- HCT116 human colorectal cancer cells: pcDNA3.1 control vs. pcDNA3.1-hPTTG1

Project description:Transcriptional profiling of hPTTG1-/- HCT116 human colorectal cancer cells comparing hPTTG1-/- HCT116 cells transfected with pcDNA3.1, and with hPTTG1-/- HCT116 cells transfected with pcDNA3.1-hPTTG1 plasmid.

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Induction of ER stress in HCT116 colon cancer cells

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2015-04-01 | E-GEOD-63252 | biostudies-arrayexpress

Induction of ER stress in HCT116 colon cancer cells

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