Project description:JMJD1C shows ubiquitous expression and is often downregulated in tumor entities compared to healthy tissues.JMJD1C inhibit growth of the glioblastoma cell line LN-229. Here, JMJD1C knockdown leads to malignant progression in the glioblastoma cell line LN-229.
Project description:Glioblastoma is the most aggressive primary brain tumor in adults and due to the invasive nature it cannot be completely removed. We have recently shown that the WNT inhibitory factor 1 (WIF1), a secreted inhibitor of WNTs, is downregulated in glioblastoma and acts as strong tumor suppressor. In search of a mediator for this function differential gene expression profiles of WIF1-expressing cells were performed. MALAT1, a long non-coding RNA and key positive regulator of invasion, emerged as the top downregulated gene. Indeed, knock-down of MALAT1 reduced migration in glioblastoma cells, without effect on proliferation. LN-229 cells induced with Doxocyclin to express WIF1 were compared to the non-induced control (two biological replicates each)
Project description:To investigate whether IDH1 mutation influence the effects of oncolytic virus VSVΔ51, we transduced doxycycline-inducible IDH1-R132H lentiviruses into LN-229 to establish the LN-229-TRE-R132H cell line. We then performed gene expression profiling analysis using data obtained from RNA-seq of LN-229-TRE-R132H cells infected with or without VSVΔ51 in the presence or absence of IDH1 mutation induced by doxycycline.
Project description:Glioblastoma is the most aggressive primary brain tumor in adults and due to the invasive nature it cannot be completely removed. We have recently shown that the WNT inhibitory factor 1 (WIF1), a secreted inhibitor of WNTs, is downregulated in glioblastoma and acts as strong tumor suppressor. In search of a mediator for this function differential gene expression profiles of WIF1-expressing cells were performed. MALAT1, a long non-coding RNA and key positive regulator of invasion, emerged as the top downregulated gene. Indeed, knock-down of MALAT1 reduced migration in glioblastoma cells, without effect on proliferation.
Project description:The AML1-ETO fusion protein, a transcription factor generated by the t(8;21) translocation in acute myeloid leukaemia (AML), dictates a leukemic program by increasing self-renewal and inhibiting differentiation. Here we demonstrate that the histone demethylase JMJD1C functions as a co-activator for AML1-ETO and is required for its transcriptional program. JMJD1C is directly recruited by AML1-ETO to its target genes and regulates their expression by maintaining low H3K9me2 levels. Analyses in JMJD1C knockout mice also establish a JMJD1C requirement for AML1-ETOâs ability to increase proliferation. We also show a critical role for JMJD1C in the survival of multiple human AML cell lines, suggesting that it is required for leukemic programs in different AML cell types through its association with key transcription factors. Examination of RNA expression when Kasumi-1 cells are treated with control shRNA or two different JMJD1C shRNAs; in duplicate. Please note that the 'shAML1_ETO_vs_shControl.all_gene_exp.tb.txtl' was generated comparing control and shRNA treated RNA abundance-using previously published data [GSE43834; GSM1071857 and GSM1071852].
Project description:The AML1-ETO fusion protein, a transcription factor generated by the t(8;21) translocation in acute myeloid leukaemia (AML), dictates a leukemic program by increasing self-renewal and inhibiting differentiation. Here we demonstrate that the histone demethylase JMJD1C functions as a co-activator for AML1-ETO and is required for its transcriptional program. JMJD1C is directly recruited by AML1-ETO to its target genes and regulates their expression by maintaining low H3K9me2 levels. Analyses in JMJD1C knockout mice also establish a JMJD1C requirement for AML1-ETO’s ability to increase proliferation. We also show a critical role for JMJD1C in the survival of multiple human AML cell lines, suggesting that it is required for leukemic programs in different AML cell types through its association with key transcription factors.
Project description:It has been recently reported that the pluripotency factor OCT4, the early neural inducing factor NR2F2, and the pluripotency-associated miRNA miR-302 are linked in a regulatory circuitry that critically regulate both pluripotency and neural differentiation of human embryonic stem cells (hESCs). We show here that JMJD1C, a H3K9 demethylase expressed in undifferentiated hESCs, plays a key role in the regulatory circuitry. hESCs with JMJD1C knockdown (KD) retain the state of self-renewal and pluripotency, but express lower miR-302c than control hESCs. JMJD1C directly binds to the miR-302 promoter in hESCs and reduces H3K9 methylation on the promoter. Upon withdrawal of bFGF (an inhibitor of neural initiation) from a defined culture medium, the KD, but not control, hESCs differentiate into neural progenitors within three days – the fastest ever reported, accompanied by rapid increase of NR2F2 expression. A miR-302c analogue or an inhibitor of H3K9 methylation reduces neural induction from the KD hESCs, whereas a miR-302c inhibitor promotes hESC differentiation. Together, our findings suggest that JMJD1C plays a central role in control of neural differentiation from hESCs, which involves sustained miR-302c expression, and that inhibition of JMJD1C is sufficient to rapidly induce neural progenitors from hESCs in the defined medium depleted of bFGF. This is also the first evidence, to our knowledge, for epigenetic modification of miR-302 in hESCs. 6 human ES cell lines were used in this microarray assay. Each line has two replicates.
Project description:We performed RNA-seq to determine the impact of MOB2 depletion on global gene expression profile.The results reveal that dysregulated genes were enriched for genes related to pathways in cancer, including PI3K–AKT signaling, cell adhesion molecules (CAMs), focal adhesion and cytokine-cytokine interaction.