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FLI1 and FRA1 transcription factors drive the transcriptional regulatory networks characterizing muscle invasive bladder cancer

ABSTRACT: FLI1 and FRA1 transcription factors drive the transcriptional regulatory networks characterizing muscle invasive bladder cancer

PROVIDER: PRJNA881309 | ENA |

REPOSITORIES: ENA

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FLI1 and FRA1 transcription factors drive the transcriptional regulatory networks characterizing muscle invasive bladder cancer

Project description:Bladder cancer is mostly present in the form of urothelium carcinoma, causing over 150.000 deaths each year. Its histopathological classification as muscle invasive and non-muscle invasive is the most prominent aspect, affecting the prognosis and progression of this disease. In this study, we defined the active regulatory landscape of MIBC and NMIBC cell lines using H3K27ac-seq and used an integrative data approach to combine our findings with existing data. Our analysis revealed FRA1 and FLI1 as the two critical transcription factors differentially regulating MIBC regulatory landscape. Importantly, we show that FRA1 and FLI1 regulate the genes involved in epithelial cell migration and cell junction organization. Knock-down of FRA1 and FLI1 in MIBC revealed the downregulation of several EMT-related genes such as MAP4K4 and FLOT1. Further, ChIP-SICAP performed for FRA1 and FLI1 enabled us to infer chromatin binding partners of these two transcription factors and link this information with their target genes, providing a comprehensive regulatory circuit for the genes implicated in invasive ability of the bladder cancer cells. Finally, we show that knock-down of FRA1 and FLI1 results in statistically significant less migration of cells using IC-CHIP assays. Our results collectively highlight the role of these two transcription factors in invasive characteristics of bladder cancer in selection and design of targeted options for treatment of MIBC.

2023-02-20 | GSE213533 | GEO

FLI1 and FRA1 transcription factors drive the transcriptional regulatory networks characterizing muscle invasive bladder cancer

Project description:Identification of transcriptional regulatory networks in muscle invasive and non-muscle invasive bladder cancer cell lines

2023-02-17 | PXD028665 | Pride

FLI1 and FRA1 transcription factors drive the transcriptional regulatory networks characterizing muscle invasive bladder cancer.

Project description:Bladder cancer is mostly present in the form of urothelium carcinoma, causing over 150,000 deaths each year. Its histopathological classification as muscle invasive (MIBC) and non-muscle invasive (NMIBC) is the most prominent aspect, affecting the prognosis and progression of this disease. In this study, we defined the active regulatory landscape of MIBC and NMIBC cell lines using H3K27ac ChIP-seq and used an integrative approach to combine our findings with existing data. Our analysis revealed FRA1 and FLI1 as two critical transcription factors differentially regulating MIBC regulatory landscape. We show that FRA1 and FLI1 regulate the genes involved in epithelial cell migration and cell junction organization. Knock-down of FRA1 and FLI1 in MIBC revealed the downregulation of several EMT-related genes such as MAP4K4 and FLOT1. Further, ChIP-SICAP performed for FRA1 and FLI1 enabled us to infer chromatin binding partners of these transcription factors and link this information with their target genes. Finally, we show that knock-down of FRA1 and FLI1 result in significant reduction of invasion capacity of MIBC cells towards muscle microenvironment using IC-CHIP assays. Our results collectively highlight the role of these transcription factors in selection and design of targeted options for treatment of MIBC.

| S-EPMC9941102 | biostudies-literature

Fra1 silencing in MDA-MB-231 cells

Project description:Fra1 silencing in MDA-MB-231 cells

2013-07-24 | E-MTAB-1230 | biostudies-arrayexpress

Transcriptional changes by RBN-2397 treatment and FRA1 knockdown in NCI-H1975 cells

Project description:PARP7 inhibitors reduce tumor growth in a cell-autonomous manner and by enhancing immune recognition through restoring nucleic acid (NA)-sensing-dependent innate immune signaling. However, the molecular targets of PARP7-mediated ADP-ribosylation, regulating cell survival and innate immune signaling, remained elusive. Here, we identified PARP7 as a nuclear and cysteine-specific mono-ART that ADP-ribosylates proteins critical for regulating gene expression, such as the AP-1 transcription factor FRA1. Upon PARP7 inhibition the loss of FRA1 ADP-ribosylation increased FRA1 degradation in a PSMC3 and proteasomal-dependent manner. To further investigate how FRA1 promotes cell survival, we investigated transcriptional changes after RBN-2397 treatment and FRA1 knockdown in the PARP7 inhibitor sensitive cell line NCI-H1975 by RNA sequencing.

2023-12-06 | GSE229674 | GEO

PARP7-mediated ADP-ribosylation stabilizes FRA1 and restrains IRF3/IRF1-dependent apoptosis and immune signaling and in cancer cells

Project description:PARP7 inhibitors suppress tumor growth in a cell autonomous manner and by activating the immune system through restoring immune signaling. Nevertheless, the targets of PARP7-mediated ADP-ribosylation that regulate innate immune signaling and cancer cell survival remain elusive. Here, we identified PARP7 as a nuclear and cysteine-specific mono-ADP-ribosyltransferase that modified proteins critical for regulating transcription, such as the AP-1 transcription factor FRA1. Loss of FRA1 ADP-ribosylation via PARP7 inhibition by RBN-2397 or mutation of the ADP-ribosylation site C97 increased FRA1 degradation by PSMC3 and the proteasome. We found that the reduction in FRA1 protein levels promoted IRF3 and IRF1-dependent innate immune signaling and CASP8-mediated apoptosis. Furthermore, we demonstrated that high PARP7 expression are critical for inducing apoptosis in FRA1-positive cancer cells using the PARP7 inhibitor. Collectively, our findings highlight the connected roles of PARP7 and FRA1 and emphasize the clinical potential of PARP7 inhibitors for FRA1-driven cancers.

2024-01-26 | PXD041870 | Pride

Comparison of gene expression profiling of human non-muscle invasive bladder cancer and muscle invasive bladder cancer

Project description:The biological behaviors, clinical treatment, prognosis of nonmuscle-invasive bladder cancers (NMIBCs) and muscle-invasive bladder cancers (MIBCs) are distinct. Therefore, we performed high-through microarray screening of mRNA expression in 30 bladder tumors, to filter out some of the differential expression genes in NMIBCs and MIBCs.A total of 11 Genes in MIBCs versus in NMIBCs were considered differentially transcribed if they were transcribed ≤2.0 fold change and p<0.001 by unpaired T-test, including 9 up-regulated genes and 2 down-regulated genes in MIBCs (NR4A2, PLK3, CYR61, APOLD1, C13ORF33, LIG4, RBMS3, PCK2, AK098422, HSD17B3, RTN4). These candidate genes were validated in further and provide further insight into the discovery of new putative markers to identify MIBCs preoperatively.

2018-12-01 | GSE77952 | GEO

Expression profile of non-muscle invasive (superficial) bladder carcinoma

Project description:Gene expression profiling of 82 human non-muscle invasive bladder carcinoma and 4 normal bladder samples, for a total of 86 tissues. A Cartes d‚àö‚â†Identite des Tumeurs (CIT) study from the 'Institut Curie' and the french 'Ligue Nationale Contre le Cancer' (http://cit.ligue-cancer.net/).

2015-01-01 | E-MTAB-1940 | biostudies-arrayexpress

KSHV-infected invasive bladder cancer cell: Control vs. KSHV-infected

Project description:Transcriptional profiling of bladder cancer cell lines comparing control uninfected cells with KSHV-infected cells. Transcriptional profiling of bladder cancer cell lines comparing control uninfected cells with KSHV-infected cells.

2015-03-10 | E-GEOD-66682 | biostudies-arrayexpress

RNAi knockdown of Fra1 in human mammary adenocardinoma using two sh-RNA constructs

Project description:Fra1 expression in LM2 cells (MDA-MB-231 derivatives, clone 4173 obtained from J. Massague) was silenced using two independent lentiviral sh-RNA constructs. Gene expresssion levels were compared to those in control cells transduced with empty vector.

2010-01-01 | E-NCMF-27 | biostudies-arrayexpress

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