TFE3 fusion oncoprotein condensates drive epigenetic reprogramming and cancer progression [CUT&RUN]
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ABSTRACT:
PROVIDER: PRJNA1182651 | ENA |
REPOSITORIES: ENA
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Project description:Translocation renal cell carcinoma (tRCC) presents a significant clinical challenge due to its aggressiveness and limited treatment options. This cancer is primarily driven by fusion oncoproteins (FOs) arising from chromosomal rearrangements, yet their role in oncogenesis remains incompletely understood. Here we investigate TFE3 fusion in tRCC, focusing on NONO::TFE3 and SFPQ::TFE3, constituting 30-40% of all TFE3 FOs. We find that TFE3 FOs form liquid-like condensates with heightened transcriptional activity, selectively recruiting active transcription markers to TFE3 target genes and promoting cell proliferation, migration, and drug resistance. The coiled-coil domains (CCD) of NONO and SFPQ are essential for condensate formation, prolonging TFE3 FOs' chromatin binding time and enhancing transcription. We comprehensively investigated the genome-wide recruitment of TFE3 FOs and their CCD-altered variants, uncovering widespread changes in chromatin accessibility and genomic binding specifically at TFE3 and AP-1 regulated loci. We also observe altered H3K27ac deposition at enhancers and super-enhancers notably at pro-growth and stemness markers such as BCL2 and CD44, and identify novel oncogenic target genes of TFE3 FOs. Disruption of condensate formation, resulting from CCD domain alterations in FOs, robustly dysregulates their role in chromatin accessibility, chromatin binding, H3K27ac occupancy, and gene expression. Altogether our integrated analyses underscore the critical functions of TFE3 FO condensates in driving RCC progression, offering pivotal insights for future targeted therapeutic strategies.
2025-04-02 | GSE281165 | GEO
Project description:TFE3 fusion oncoprotein condensates drive epigenetic reprogramming and cancer progression
| PRJNA1183976 | ENA
Project description:Translocation renal cell carcinoma (tRCC) presents a significant clinical challenge due to its aggressiveness and limited treatment options. This cancer is primarily driven by fusion oncoproteins (FOs) arising from chromosomal rearrangements, yet their role in oncogenesis remains incompletely understood. Here we investigate TFE3 fusion in tRCC, focusing on NONO::TFE3 and SFPQ::TFE3, constituting 30-40% of all TFE3 FOs. We find that TFE3 FOs form liquid-like condensates with heightened transcriptional activity, selectively recruiting active transcription markers to TFE3 target genes and promoting cell proliferation, migration, and drug resistance. The coiled-coil domains (CCD) of NONO and SFPQ are essential for condensate formation, prolonging TFE3 FOs' chromatin binding time and enhancing transcription. We comprehensively investigated the genome-wide recruitment of TFE3 FOs and their CCD-altered variants, uncovering widespread changes in chromatin accessibility and genomic binding specifically at TFE3 and AP-1 regulated loci. We also observe altered H3K27ac deposition at enhancers and super-enhancers notably at pro-growth and stemness markers such as BCL2 and CD44, and identify novel oncogenic target genes of TFE3 FOs. Disruption of condensate formation, resulting from CCD domain alterations in FOs, robustly dysregulates their role in chromatin accessibility, chromatin binding, H3K27ac occupancy, and gene expression. Altogether our integrated analyses underscore the critical functions of TFE3 FO condensates in driving RCC progression, offering pivotal insights for future targeted therapeutic strategies.
2025-04-02 | GSE281477 | GEO
Project description:Translocation renal cell carcinoma (tRCC) presents a significant clinical challenge due to its aggressiveness and limited treatment options. This cancer is primarily driven by fusion oncoproteins (FOs) arising from chromosomal rearrangements, yet their role in oncogenesis remains incompletely understood. Here we investigate TFE3 fusion in tRCC, focusing on NONO::TFE3 and SFPQ::TFE3, constituting 30-40% of all TFE3 FOs. We find that TFE3 FOs form liquid-like condensates with heightened transcriptional activity, selectively recruiting active transcription markers to TFE3 target genes and promoting cell proliferation, migration, and drug resistance. The coiled-coil domains (CCD) of NONO and SFPQ are essential for condensate formation, prolonging TFE3 FOs' chromatin binding time and enhancing transcription. We comprehensively investigated the genome-wide recruitment of TFE3 FOs and their CCD-altered variants, uncovering widespread changes in chromatin accessibility and genomic binding specifically at TFE3 and AP-1 regulated loci. We also observe altered H3K27ac deposition at enhancers and super-enhancers notably at pro-growth and stemness markers such as BCL2 and CD44, and identify novel oncogenic target genes of TFE3 FOs. Disruption of condensate formation, resulting from CCD domain alterations in FOs, robustly dysregulates their role in chromatin accessibility, chromatin binding, H3K27ac occupancy, and gene expression. Altogether our integrated analyses underscore the critical functions of TFE3 FO condensates in driving RCC progression, offering pivotal insights for future targeted therapeutic strategies.
2025-04-02 | GSE281164 | GEO
Project description:TFE3 fusion oncoprotein condensates drive epigenetic reprogramming and cancer progression [ATAC-Seq]
| PRJNA1182654 | ENA
Project description:Aberrant transcription in alveolar soft part sarcoma (ASPS) is orchestrated by the fusion oncoprotein, ASPSCR1-TFE3, resulting from a gene fusion created by a t(X;17) chromosomal translocation. Proteomic analysis of co-immunoprecipitated ASPSCR1-TFE3 complexes revealed strong enrichment of VCP/p97, an AAA+ ATPase with known segregase function. VCP and ASPSCR1-TFE3 co-distributed across chromatin and were associated with active enhancers, indicated by flanking peaks of H3K27ac that assemble into higher order chromatin structures by HiChIP. Positive and negative genetic experiments with ASPSCR1-TFE3 and VCP demonstrated that they function co-dependently for cancer cell proliferation, colony formation, enhancer activation, chromatin conformation, and transcription. The VCP associating with ASPSCR1-TFE3 was found by native gel and electron microscopy to be assembled into homo-hexamers. Disruption of VCP hexamer assembly or enzymatic function inhibited the transcriptional impact of ASPSCR1-TFE3. Thus, a segregase was found to bind chromatin and assemble into 3-dimensional structures as a co-factor of transcriptional regulation.
2023-11-23 | PXD022515 | Pride
Project description:The goal of this study was to analyse the effects of the SFPQ-TFE3 fusion by transforming kidney tubuloids with the construct. Samples without the construct (luciferase only) and overexpressing the partner only (TFE3) were also used as controls. Furthermore, transformed organoids were also transferred into mice PDX models to check their tumorigenic potential; tumors derived from the organoids were subsequently used for sequencing.
2025-02-28 | E-MTAB-13901 | biostudies-arrayexpress
Project description:Aberrant transcription in alveolar soft part sarcoma (ASPS) is orchestrated by the fusion oncoprotein, ASPSCR1-TFE3, product of a gene fusion created by a t(X;17) chromosomal translocation. Here, proteomics of proteins co-immunoprecipitating with ASPSCR1-TFE3 revealed strong enrichment of VCP/p97, an AAA+ ATPase with known segregase function. Positive and negative genetic experiments with ASPSCR1-TFE3 and VCP demonstrated that they function co-dependently for cancer cell proliferation, colony formation, enhancer activation, chromatin conformation, and transcription
2023-01-01 | GSE162478 | GEO
Project description:Aberrant transcription in alveolar soft part sarcoma (ASPS) is orchestrated by the fusion oncoprotein, ASPSCR1-TFE3, product of a gene fusion created by a t(X;17) chromosomal translocation. Here, proteomics of proteins co-immunoprecipitating with ASPSCR1-TFE3 revealed strong enrichment of VCP/p97, an AAA+ ATPase with known segregase function. Positive and negative genetic experiments with ASPSCR1-TFE3 and VCP demonstrated that they function co-dependently for cancer cell proliferation, colony formation, enhancer activation, chromatin conformation, and transcription
2023-01-01 | GSE162727 | GEO
Project description:Translocation renal cell carcinoma (tRCC) is a rare, aggressive kidney cancer primarily occurring in children. They are genetically defined by translocations involving MiT/TFE gene family members, TFE3. We utilized human kidney organoids, or tubuloids, to engineer a tRCC model by expressing of one of the most common MiT/TFE fusions, SFPQ-TFE3. Lentiviral transductions were performed as previously described with lentiviruses encoding either pLKO.1-UbC-luciferase-blast (TubCtrl), pLKO.1-UbC-TFE3-blast (TubTFE3), or pLKO.1-UbC-SFPQ-TFE3-blast (TubFus). Two days post transduction, 5 µg/ml blasticidin was added to the culture medium to select for successfully transduced cells. To study the genome-wide binding sites of the fusion, we conducted CUT&RUN sequencing. CUT&RUN experiments were performed using a modified protocol for low cell numbers using the following antibodies: anti-TFE3 (ab93808, Abcam, 1:2000). Libraries were sequenced using an Illumina NextSeq2000 (2x100bp).
2024-10-01 | E-MTAB-13900 | biostudies-arrayexpress