Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA340240 | ENA |
REPOSITORIES: ENA
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Project description:Cell migration is a central process in the development and maintenance of multicellular organisms. Tissue formation during embryonic development, wound healing, immune responses and invasive tumors all require the orchestrated movement of cells to specific locations. Histone demethylase proteins alter transcription by regulating the chromatin state at specific gene loci. FBXL10 is a conserved and ubiquitously expressed member of the JmjC domain-containing histone demethylase family and is implicated in the demethylation of H3K4me3 and H3K36me2 and thereby removing active chromatin marks. However, the physiological role of FBXL10 in vivo remains largely unknown. Therefore, we established an inducible gain of function model to analyze the role of Fbxl10 and compared wild-type with Fbxl10 overexpressing mouse embryonic fibroblasts (MEFs). Our study shows that overexpression of Fbxl10 in MEFs doesn`t influence the proliferation capability but leads to an enhanced migration capacity in comparison to wild-type MEFs. Transcriptome and ChIP-seq experiments demonstrated that Fbxl10 binds to genes involved in migration like Areg, Mdk, Lmnb1, Thbs1, Mgp and Cxcl12. Taken together, our results strongly suggest that Fbxl10 plays a critical role in migration by binding to the promoter region of migration-associated genes and thereby might influences cell behaviour to a possibly more aggressive phenotype.
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Project description:Posttranslational modifications on histone tails control gene expresssion levels in an either positive or negative way. Therefore enzymes which modifiy the modifications on the histon tails, like histone demethylases, are able to strictly regulate the transcriptom. To analyse the regulatory role of histone demethylase Fbxl10 we generated a stable cell line permanently overexpressing HA-tagged Fbxl10 and identified the transcriptome changes compared to untransfected control cell line by microarray. Tet-off Mefs were transfected with a plasmid containing HA-Fbxl10 cDNA and a Hygromycin resistence plasmid and cell clones were selected for HA-Fbxl10 expression. Three independent RNA samples were generated from untransfected Tet-off Mef cells (C1-C3) and from Tet-off Mef HA-Fbxl10 (D1-D3) and hybridisated on Affymetrix microarray.
2012-10-05 | E-GEOD-34691 | biostudies-arrayexpress
Project description:Posttranslational modifications on histone tails control gene expresssion levels in an either positive or negative way. Therefore enzymes which modifiy the modifications on the histon tails, like histone demethylases, are able to strictly regulate the transcriptom. To analyse the regulatory role of histone demethylase Fbxl10 we generated a stable cell line permanently overexpressing HA-tagged Fbxl10 and identified the transcriptome changes compared to untransfected control cell line by microarray.
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Project description:Nearly all CpG-dense promoters are occupied by the multi-domain chromosomal protein FBXL10. We show here that complete inactivation of the Fbxl10 gene leads to dense de novo methylation only of the promoters that are co-occupied by both FBXL10 and by Polycomb Repressive Complexes; this results in pervasive defects in embryonic development and death of homozygous Fbxl10 mutant embryos at midgestation. Deletion of key components of Polycomb Repressive Complexes 1 and 2 did not lead to ectopic de novo methylation. These results indicate that FBXL10 defends Polycomb-occupied promoters against ectopic de novo methylation. FBXL10 is the first reported factor whose loss leads to a gain in genomic DNA methylation.
2015-04-06 | GSE65582 | GEO
Project description:Nearly all CpG-dense promoters are occupied by the multi-domain chromosomal protein FBXL10. We show here that complete inactivation of the Fbxl10 gene leads to dense de novo methylation only of the promoters that are co-occupied by both FBXL10 and by Polycomb Repressive Complexes; this results in pervasive defects in embryonic development and death of homozygous Fbxl10 mutant embryos at midgestation. Deletion of key components of Polycomb Repressive Complexes 1 and 2 did not lead to ectopic de novo methylation. These results indicate that FBXL10 defends Polycomb-occupied promoters against ectopic de novo methylation. FBXL10 is the first reported factor whose loss leads to a gain in genomic DNA methylation.
2015-04-06 | GSE65580 | GEO