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CDDO drives transcriptomic and epigenetic reprogramming in response to TPA-induced JB6 cell neoplastic transformation [RNA-seq]

ABSTRACT: CDDO drives transcriptomic and epigenetic reprogramming in response to TPA-induced JB6 cell neoplastic transformation [RNA-seq]

PROVIDER: PRJNA849521 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR19661971.fastq.gz	Fastqsanger.gz
	SRR19661972.fastq.gz	Fastqsanger.gz
	SRR19661973.fastq.gz	Fastqsanger.gz

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CDDO drives transcriptomic and epigenetic reprogramming in response to TPA-induced JB6 cell neoplastic transformation [RNA-seq]

Project description:12-O-tetradecanoylphorbol-13-acetate (TPA) promotes skin carcinogenesis. CDDO is a potential antioxidative and antiinflammatory agent to prevent the TPA-induced skin cell transformation at nanomolar scale. We characterized the transcriptome, CpG methylome, and pathway network of JB6 cells treated with TPA and TPA + CDDO using RNA sequencing, methyl sequencing, and QIAGEN Ingenuity Pathway Analysis.

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CDDO drives transcriptomic and epigenetic reprogramming in response to TPA-induced JB6 cell neoplastic transformation [Methyl-seq]

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CDDO drives transcriptomic and epigenetic reprogramming in response to TPA-induced JB6 cell neoplastic transformation

Project description:CDDO drives transcriptomic and epigenetic reprogramming in response to TPA-induced JB6 cell neoplastic transformation

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CDDO drives transcriptomic and epigenetic reprogramming in response to TPA-induced JB6 cell neoplastic transformation [Methyl-seq]

Project description:CDDO drives transcriptomic and epigenetic reprogramming in response to TPA-induced JB6 cell neoplastic transformation [Methyl-seq]

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CDDO drives transcriptomic and epigenetic reprogramming in response to TPA-induced JB6 cell neoplastic transformation

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FRA1 (FOSL1) Suppresses Neoplastic Transformation and Modulates Radiation Responses via Transcriptional Control of Mitogenic and Stress-Responsive Networks

Project description:Purpose: FOS-like antigen 1 (FRA1), encoded by FOSL1, is an inducible subunit of the AP-1 transcription factor complex and regulates gene expression in response to proliferative and environmental cues. Although FRA1 has been linked to cancer progression, its role in early transformation and radiation responses remains unclear. Methods: CRISPR-engineered human CGL1 cells—a hybrid of HeLa and normal fibroblasts—were used to evaluate the impact of FRA1 overexpression and knockout on neoplastic transformation. Transformation frequency, clonogenic survival, DNA damage recognition and repair, and cell cycle distribution were assessed following irradiation. Transcriptomic profiling was performed under baseline and serum-stimulated conditions. Results: FRA1 loss markedly increased both spontaneous and radiation-induced transformation frequency, while overexpression suppressed transformation under both conditions. FRA1-deficient cells were sensitized to radiation-induced cell killing, despite intact DNA damage recognition and repair. In contrast, FRA1 overexpression promoted G2/M accumulation post-irradiation, suggesting enhanced checkpoint activation. Transcriptomic profiling revealed that FRA1 remodels AP-1 complex composition and functions as a transcriptional repressor of mitogen- and stress-responsive genes. FRA1-mediated repression was observed across gene networks involved in extracellular matrix remodeling, hypoxia signaling, inflammation, and proliferation, under both baseline and serum-stimulated conditions. Conclusion: These findings establish FRA1 as a key modulator of neoplastic transformation and radiation response, acting primarily through transcriptional repression of pro-tumorigenic signaling pathways.

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