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RRAD, IL4I1, CDKN1A, and SERPINE1 genes are potentially co-regulated by NF-κB and p53 transcription factors in cells exposed to high doses of ionizing radiation [ChIP-Seq]

ABSTRACT: RRAD, IL4I1, CDKN1A, and SERPINE1 genes are potentially co-regulated by NF-κB and p53 transcription factors in cells exposed to high doses of ionizing radiation [ChIP-Seq]

PROVIDER: PRJNA434584 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6748786.fastq.gz	Fastqsanger.gz
	SRR6748787.fastq.gz	Fastqsanger.gz
	SRR6748788.fastq.gz	Fastqsanger.gz

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RRAD, IL4I1, CDKN1A, and SERPINE1 genes are potentially co-regulated by NF-κB and p53 transcription factors in cells exposed to high doses of ionizing radiation [ChIP-Seq]

Project description:Cellular response to ionizing radiation involves activation of the p53-dependent pathways and activation of the atypical NF-κB pathway. Mechanisms of the crosstalk between these two transcriptional networks include (co)regulation of common gene targets. Novel genes potentially (co)regulated by p53 and NF-κB were found using high-throughput genomics screening in human osteosarcoma U2-OS cells irradiated with a high dose (4 and 10 Gy). Radiation-induced expression in cells with silenced TP53 or RELA (coding the p65 NF-κB subunit) genes was analyzed by RNA-Seq while radiation-induced binding of p53 and RelA (p65) in putative regulatory regions was analyzed by ChIP-Seq, then selected candidates were validated by qPCR. A subset of radiation-modulated genes whose expression was affected by silencing of both TP53 and RELA, and a subset of radiation-upregulated genes where radiation stimulated binding of both p53 and RelA were identified. Competition for the same transcriptional coactivators of p53 and NF-κB was the most probable mechanism of a frequent antagonistic effect of the TP53 and RELA silencing. However, this mode of regulation was noted for 3 genes where radiation-induced binding of both p53 and RelA was observed, namely IL4I1, SERPINE1, and CDKN1A. This suggested a possibility of a direct antagonistic (co)regulation by both factors: activation by NF-κB and inhibition by p53 of IL4I1, and activation by p53 and inhibition by NF-κB of CDKN1A and SERPINE1. On the other hand, radiation-induced binding of both p53 and RelA was observed in a putative regulatory region of RRAD gene whose expression was downregulated both by TP53 and RELA silencing, which suggested a possibility of direct (co)activation by both factors.

2018-02-19 | GSE110800 | GEO

RRAD, IL4I1, CDKN1A, and SERPINE1 genes are potentially co-regulated by NF-κB and p53 transcription factors in cells exposed to high doses of ionizing radiation [RNA-Seq]

Project description:Cellular response to ionizing radiation involves activation of the p53-dependent pathways and activation of the atypical NF-?B pathway. Mechanisms of the crosstalk between these two transcriptional networks include (co)regulation of common gene targets. Novel genes potentially (co)regulated by p53 and NF-?B were found using high-throughput genomics screening in human osteosarcoma U2-OS cells irradiated with a high dose (4 and 10 Gy). Radiation-induced expression in cells with silenced TP53 or RELA (coding the p65 NF-?B subunit) genes was analyzed by RNA-Seq while radiation-induced binding of p53 and RelA (p65) in putative regulatory regions was analyzed by ChIP-Seq, then selected candidates were validated by qPCR. A subset of radiation-modulated genes whose expression was affected by silencing of both TP53 and RELA, and a subset of radiation-upregulated genes where radiation stimulated binding of both p53 and RelA were identified. Competition for the same transcriptional coactivators of p53 and NF-?B was the most probable mechanism of a frequent antagonistic effect of the TP53 and RELA silencing. However, this mode of regulation was noted for 3 genes where radiation-induced binding of both p53 and RelA was observed, namely IL4I1, SERPINE1, and CDKN1A. This suggested a possibility of a direct antagonistic (co)regulation by both factors: activation by NF-?B and inhibition by p53 of IL4I1, and activation by p53 and inhibition by NF-?B of CDKN1A and SERPINE1. On the other hand, radiation-induced binding of both p53 and RelA was observed in a putative regulatory region of RRAD gene whose expression was downregulated both by TP53 and RELA silencing, which suggested a possibility of direct (co)activation by both factors.

2018-02-17 | GSE110762 | GEO

RRAD, IL4I1, CDKN1A, and SERPINE1 genes are potentially co-regulated by NF-κB and p53 transcription factors in cells exposed to high doses of ionizing radiation [RNA-Seq]

Project description:RRAD, IL4I1, CDKN1A, and SERPINE1 genes are potentially co-regulated by NF-κB and p53 transcription factors in cells exposed to high doses of ionizing radiation [RNA-Seq]

| PRJNA434471 | ENA

RRAD, IL4I1, CDKN1A, and SERPINE1 genes are potentially co-regulated by NF-?B and p53 transcription factors in cells exposed to high doses of ionizing radiation.

Project description:BackgroundThe cellular response to ionizing radiation involves activation of p53-dependent pathways and activation of the atypical NF-?B pathway. The crosstalk between these two transcriptional networks include (co)regulation of common gene targets. Here we looked for novel genes potentially (co)regulated by p53 and NF-?B using integrative genomics screening in human osteosarcoma U2-OS cells irradiated with a high dose (4 and 10 Gy). Radiation-induced expression in cells with silenced TP53 or RELA (coding the p65 NF-?B subunit) genes was analyzed by RNA-Seq while radiation-enhanced binding of p53 and RelA in putative regulatory regions was analyzed by ChIP-Seq, then selected candidates were validated by qPCR.ResultsWe identified a subset of radiation-modulated genes whose expression was affected by silencing of both TP53 and RELA, and a subset of radiation-upregulated genes where radiation stimulated binding of both p53 and RelA. For three genes, namely IL4I1, SERPINE1, and CDKN1A, an antagonistic effect of the TP53 and RELA silencing was consistent with radiation-enhanced binding of both p53 and RelA. This suggested the possibility of a direct antagonistic (co)regulation by both factors: activation by NF-?B and inhibition by p53 of IL4I1, and activation by p53 and inhibition by NF-?B of CDKN1A and SERPINE1. On the other hand, radiation-enhanced binding of both p53 and RelA was observed in a putative regulatory region of the RRAD gene whose expression was downregulated both by TP53 and RELA silencing, which suggested a possibility of direct (co)activation by both factors.ConclusionsFour new candidates for genes directly co-regulated by NF-?B and p53 were revealed.

| S-EPMC6233266 | biostudies-literature

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TAF15 protein regulates CDKN1A through miRNAs

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TAF15 protein regulates CDKN1A through miRNAs

Project description:TAF15 (formerly TAFII68) is a member of the TET family of RNA and DNA binding proteins whose genes are frequently translocated in sarcomas. Consistent with a functional role in cell viability, TAF15 depletion had a growth-inhibitory effect and increased apoptosis. Interestingly, one of the genes affected by TAF15 depletion is CDKN1A/p21, a key regulator of cell cycle. Here we show that TAF15 down-regulates CDKN1A/p21 expression through a pathway involving miRNAs. We performed a gene expression profiling upon TAF15 knock down by RNA interference.Total RNAs purified from four biological replicates of HeLa GL3 luc cells transfected either with si-TAF15 or control si-LUC were hybridized to the array.

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