Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Chimeric Oncoproteins Enhance Native Kinase Activity to Drive Tumorigenesis via Phase-separated Cytoplasmic Condensates

ABSTRACT: Gene fusions involving receptor tyrosine kinases (RTKs) are potent oncogenic drivers, yet the underlying mechanisms by which these chimeric proteins induce tumorigenesis remain largely elusive. Here we demonstrate that recurrent FGFR3-TACC3 (FT) fusion proteins undergo liquid-liquid phase separation (LLPS) to form cytoplasmic condensates, driving tumorigenesis in lung cancer and glioma. These condensates function as oncogenic signaling hubs, enhancing FGFR3 native kinase activity and promoting hyperactivation of the canonical MAPK/ERK pathway. The coiled-coil domain of TACC3 is essential for condensate formation and the oncogenic potential of FT fusions. CKAP5 and AURKA are recruited to FT phase-separated condensates, thereby amplifying MAPK/ERK signaling and triggering AURKA/MYC oncogenic program. Dual pharmacological inhibition of FGFR3 and AURKA synergistically dissipates LLPS and impedes the growth of FT-driven tumors. Our findings unveil the oncogenic significance of membrane-less protein assembly and highlight the potential of targeting LLPS or its pivotal components as a therapeutic strategy for FT-driven cancers.

ORGANISM(S): Homo sapiens

PROVIDER: GSE275073 | GEO | 2026/08/11

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

DNA methylation analysis of glioblastomas harboring FGFR3-TACC3 fusions identifies a methylation subclass with better patient survival.

Project description:Genomewide DNA methylation array profiling of 244 gliobastoma and ganglioglioma samples to study FGFR3-TACC3 gene fusions and resolved into a new entity, glioblastoma IDH-wildtype, FGFR3-TACC3 fusion postive methylation outlier group (GBM-F3T3-O). GBM-F3T3-O showed a unique methylation profile and better survival than other glioblastoma patients. The methylation idat profiles were provided here.

2022-05-16 | GSE200647 | GEO

NAB2::STAT6 Fusion Proteins Drive Nuclear Condensate Formation and Transcriptional Reprogramming in Solitary Fibrous Tumors

Project description:Solitary fibrous tumor (SFT) is a rare and aggressive sarcoma driven by NAB2::STAT6 gene fusions, yet effective targeted therapies remain unavailable. Here, we report that the NAB2ex4::STAT6ex2 fusion variant forms nuclear condensates via liquid-liquid phase separation (LLPS) in engineered fibroblast models and primary SFT cells. These condensates co-localize with BRD4S and EGR1, key transcriptional regulators, and are functionally active, driving widespread transcriptional reprogramming. Treatment with Mithramycin A, a compound that disrupts EGR1-DNA interactions, dissolves NAB2::STAT6 condensates and reverses their aberrant gene expression and chromatin binding signatures. Our findings uncover a previously unrecognized role for NAB2::STAT6 in condensate-mediated oncogenic signaling and provide a mechanistic rationale for condensate-targeted therapy in SFT.

2026-06-05 | GSE330326 | GEO

Microarray of Human astrocytes transduced with lentivirus expressing FGFR3-TACC3 treated with vehicle, FGFR3-TACC3 treated with the FGFR inhibitor PD173074 for 12h, FGFR3-TACC3-K508M treated with vehicle or empty vector treated with vehicle

Project description:In order to interrogate the transcriptional changes elicited by FGFR3-TACC3, we expressed the FGFR3-TACC3 fusion protein in human astrocytes and compared the global gene expression profiles of cells treated with a specific inhibitor of FGFR3-TK (PD173074) or vehicle. FGFR3-TACC3 expressing HA were also compared with HA that expressed the kinase-inactive FGFR3-TACC3 (FGFR3-TACC3-K508M) and HA transduced with the empty vector. Gene Ontology-guided enrichment map demonstrated that, besides the expected enrichment for mitotic activity, oxidative phosphorylation and mitochondrial biogenesis were the most significant biological functions enriched in HA expressing active FGFR3-TACC3.

2017-10-17 | E-MTAB-6037 | biostudies-arrayexpress

Gene expression profiling of glioblastoma cell lines transfected with FGFR3-TACC3

Project description:Gene expression profiling of SNB19 and U251 glioblastoma cell lines transfected with the FGFR3-TACC3 fusion, FGFR3 wildtype and TACC3 wildtype constructs. SNB19 and U251 cells were transfected with different clones of the FGFR3-TACC3 fusion and with wildtype FGFR3 and TACC3 constructs. Total RNA was extracted and hybridized onto Agilent dual channel gene expression microarrays. In each hybridization, empty vector transfected SNB19 or U251 cells were hybridized into the reference channel.

2012-12-01 | E-GEOD-42401 | biostudies-arrayexpress

Gene expression profiling of glioblastoma cell lines transfected with FGFR3-TACC3

Project description:Gene expression profiling of SNB19 and U251 glioblastoma cell lines transfected with the FGFR3-TACC3 fusion, FGFR3 wildtype and TACC3 wildtype constructs.

2012-12-01 | GSE42401 | GEO

Gene expression data from RT112 following FGFR3 knock-down using FGFR3 siRNAs

Project description:To better understand the molecular mechanisms underlying altered-FGFR3 oncogenic activity in bladder carcinomas, we made use of RT112 cell lines, which were derived from a human bladder tumor and endogenously expressed the FGFR3-TACC3 fusion protein, the growth and transformation of these cell lines being dependent on activated-FGFR3 activity. We conducted a gene expression analysis using Affymetrix DNA arrays in this cell line treated or not with FGFR3 siRNAs.

2018-02-16 | GSE84732 | GEO

Effect of CLK2 expression in the regulation of intron retention during heat shock [RNA-seq]

Project description:Intron retention (IR) constitutes a less explored form of alternative splicing, wherein introns are retained within mature mRNA transcripts. Our investigation demonstrates that the CDC-like kinase 2 (CLK2) undergoes liquid-liquid phase separation (LLPS) within nuclear speckles in response to heat shock (HS). The formation of CLK2 condensates depends on the intrinsically disordered region (IDR) located within the N-terminal amino acids 1-148. Phosphorylation at residue T343 sustains CLK2 kinase activity and facilitates autophosphorylation, thus inhibiting the LLPS activity of the IDR. These CLK2 condensates initiate the reorganization of nuclear speckles, transforming them into larger, rounded structures. Moreover, these condensates facilitate the recruitment of splicing factors into these compartments, potentially restricting their access to mRNA for intron splicing. Consequently, the formation of CLK2 condensates promotes the IR.

2024-07-15 | GSE271918 | GEO

Hypoxia-induced phase separation of ZHX2 drives 3D chromatin remodeling and cancer metastasis (Hi-C)

Project description:Hypoxia and dysregulation of three-dimensional (3D) chromatin architecture can both activate oncogenic transcriptomic profiles, thus contributing to tumor malignancy. But how hypoxia regulates 3D chromatin architecture remains unknown. Here, we find that the transcription factor, zinc fingers and homeoboxes 2 (ZHX2), generates liquid-liquid phase separation (LLPS) under hypoxia, thus promoting its occupancy on chromatin and activating transcription for a cluster of oncogenes, that is enriched by metastatic genes distinct from targets of hypoxia-inducible factor (HIF) and pathologically relevant to breast cancer. Mechanistically, hypoxia induces the LLPS of ZHX2 via a proline-rich intrinsically disordered region (IDR) in the nuclear localization sequence (NLS), thereby enhancing the phosphorylation of ZHX2 at S625 and S628 that incorporates CCCTCbinding factor (CTCF) in condensates to reorganize chromatin looping, consequently resulting in oncogenic super-enhancer formation and breast cancer metastasis. This fundamental mechanism provides significant insight into oncogene activation and suggests a phase separation-based therapeutic strategy for cancer.

2025-03-18 | GSE260880 | GEO

Hypoxia-induced phase separation of ZHX2 drives 3D chromatin remodeling and cancer metastasis (RNA-Seq)

2025-03-18 | GSE260794 | GEO

Hypoxia-induced phase separation of ZHX2 drives 3D chromatin remodeling and cancer metastasis (ChIP-Seq)

2025-03-18 | GSE260793 | GEO