Bacterial extracellular vesicles from Streptococcus mutans drive OSCC progression through β-catenin signaling
Ontology highlight
ABSTRACT:
ORGANISM(S): Streptococcus Mutans
SUBMITTER: 
Yong Fang
PROVIDER: PXD072344 | iProX | Tue Dec 23 00:00:00 GMT 2025
REPOSITORIES: iProX
Similar Datasets
Project description:Head and neck squamous cell carcinoma (HNSCC) presents primarily as oral squamous cell carcinoma (OSCC), an aggressive malignancy characterized by heterogeneity, locoregional metastases and resistance to existing treatments. Although a number of molecular alterations associated with OSCC have been identified, they have had limited impact on clinical management. A frequent feature of OSCC is the inappropriate activation of nuclear β-catenin. Here, we provide a comprehensive characterization of the effects of blocking the interaction between nuclear β-catenin and the cAMP-responsive element binding (CREB)-binding protein (CBP) using the small molecule inhibitor ICG-001. We demonstrate that ICG-001 inhibits cell proliferation and aggressive OSCC cell phenotypes in cellular, zebrafish and murine models, and that its inhibition-associated transcriptional signature tracks with advanced tumor grade and poor survival in human patients. Our results suggest that targeting the β-catenin/CBP interaction in the nucleus represents a new and effective therapy for OSCC.
2018-07-03 | GSE95704 | GEO
Project description:Colorectal cancer (CRC) ranks second in cancer-related mortality worldwide, with clinical intractability and chemoresistance representing significant challenges driven by cancer stem cells (CSCs). Wnt/β-catenin signaling is a lynchpin of CSC self-renewal, but targetable upstream drivers remain elusive. Using bioinformatics we identified the proteoglycan SPOCK1 as a Wnt-associated CSC target. Critically, high SPOCK1 expression predicted poor patient prognosis and reduced progression-free survival following first-line chemotherapy. In vitro assays demonstrated that SPOCK1 levels modulated Wnt/β-catenin activity. SPOCK1 silencing inhibited β-catenin nuclear translocation and TCF/LEF-mediated transcription, which concurrently suppressed CRC proliferation and stemness. Conversely, SPOCK1 overexpression promoted β-catenin nuclear translocation and TCF/LEF-mediated transcription, which enhanced CRC proliferation and stemness. This SPOCK1-driven pro-tumorigenic effect was significantly reversed by the β-catenin/TCF/LEF inhibitor iCRT3, demonstrating SPOCK1’s dependence on Wnt transcriptional activation. The functional role was validated in vivo using a SPOCK1-overexpressing xenograft model and ex vivo using patient-derived organoids (PDOs), both confirming increased growth and β-catenin nuclear localization. Furthermore, data-independent acquisition (DIA) mass spectrometry of SPOCK1-overexpressing tumors revealed pro-tumorigenic signaling including c-Myc activity, oxidative phosphorylation, epithelial-mesenchymal transition. Notably, SPOCK1 drove remodeling of the tumor microenvironment, characterized by desmoplasia and fibrosis. Overall, our findings establish a SPOCK1/Wnt/β-catenin axis as a novel mechanism driving CRC tumorigenesis and stemness, positioning it as a promising therapeutic target to overcome Wnt-mediated progression and resistance.
2025-10-10 | GSE309532 | GEO
Project description:Oral squamous cell carcinoma (OSCC) represents a major malignancy in the oral and maxillofacial region. The primary therapeutic agents, 5-fluorouracil (5FU) and oxaliplatin (OXA), often encounter the challenge of chemoresistance, leading to treatment failure. The WNT/β-catenin signaling pathway, closely tied with chemoresistance, offers a promising therapeutic avenue. This study delves into this potential connection. 5FU-resistant and OXA-resistant cell lines were established by gradually elevating the drug concentration in the culture medium. Differential gene expressions between parental and resistant cells were analyzed by RNA sequencing analysis, which was then substantiated via RT-qPCR and western blot. The influence of the WNT signaling on OSCC drug resistance was ascertained through WNT3 knockdown or overexpression. The WNT inhibitor, MSAB, was probed for its capacity to boost the efficacy of 5FU or OXA. Through transcriptome sequencing, successfully derived 5FU-resistant and OXA-resistant cell lines revealed a conspicuous activation of the WNT/β-catenin signaling pathway in the drug-resistant cells. WNT3 was identified as a pivotal factor contributing to chemoresistance in OSCC. Counteracting β-catenin notably augmented the therapeutic potency of 5FU and OXA. Our study underscored the activation of the WNT/β-catenin signaling pathway in resistant OSCC cell lines. By modulating WNT signaling activity, drug resistance in OSCC cells may be effectively circumvented.
2024-05-15 | GSE248792 | GEO
Project description:To identify evolutionarily conserved Beta-catenin protein interactions, Beta-catenin mRNA from various metazoans was injected into Xenopus embryos and immunopurified at gastrula stage. Beta-catenin complexes were then separated on an SDS-PAGE gel and subjected mass spectrometric analysis
2023-07-08 | PXD035167 | JPOST Repository
Project description:Canonical Wnt/β-catenin signalling is an essential regulator of various cellular functions throughout development and adulthood. Aberrant Wnt/β-catenin signalling also contributes to various pathologies including cancer, necessitating an understanding of cell context dependent mechanisms regulating this pathway. Since protein-protein interactions underpin β-catenin function and localization, we sought to identify novel β-catenin interacting partners by affinity purification coupled with tandem mass spectrometry in vascular smooth muscle cells (VSMCs), where β-catenin is involved in both physiological and pathological control of cell proliferation. Here, we report novel components of the VSMC β-catenin interactome.
2018-10-25 | PXD010421 | Pride
Project description:Tumor: tumor microenvironment (TME) interactions are critical for tumor progression and the composition and structure of the local extracellular matrix (ECM) are key determinants of tumor metastasis. We recently reported that activation of Wnt/beta- catenin signaling in Ewing sarcoma cells induces widespread transcriptional changes that are associated with acquisition of a metastatic tumor phenotype. Significantly, ECM protein-encoding genes were found to be enriched among Wnt/beta-catenin induced transcripts, leading us to hypothesize that activation of canonical Wnt signaling might induce changes in the Ewing sarcoma secretome. To address this hypothesis, conditioned media from Ewing sarcoma cell lines cultured in the presence or absence of Wnt3a was collected for proteomic analysis. Label-free mass spectrometry was used to identify and quantify differentially secreted proteins. We then used in silico databases to identify only proteins annotated as secreted. Comparison of the secretomes of two Ewing sarcoma cell lines revealed numerous shared proteins, as well as a degree of heterogeneity, in both basal and Wnt-stimulated conditions. Gene set enrichment analysis of secreted proteins revealed that Wnt stimulation reproducibly resulted in increased secretion of proteins involved in ECM organization, ECM receptor interactions, and collagen formation. In particular, Wnt-stimulated Ewing sarcoma cells upregulated secretion of structural collagens, as well as matricellular proteins, such as the metastasis-associated protein, tenascin C (TNC). Interrogation of published databases confirmed reproducible correlations between Wnt/beta-catenin activation and TNC and COL1A1 expression in patient tumors. In summary, this first study of the Ewing sarcoma secretome reveals that Wnt/beta-catenin activated tumor cells upregulate secretion of ECM proteins. Such Wnt/beta-catenin mediated changes are likely to impact on tumor: TME interactions that contribute to metastatic progression.
2018-02-07 | PXD007909 | Pride
Project description:β-catenin plays a vital role in various biological processes, such as body axis determination and cell differentiation, during embryonic development in metazoans. These β-catenin functions are thought to be exerted through complexes formed with various types of proteins. Although β-catenin complex proteins have been identified in several bilaterian models, little is known about the structural and functional properties of β-catenin complexes in the early metazoan evolutionary phases. In this study, we performed a comparative analysis of β-catenin sequences in nonbilaterian lineages that branched off early in metazoan evolution. We aslo carried out a transphyletic function experiments of β-catenin from non-bilaterian metazoans using developing Xenopus embryos, which included secondary axis induction in embryos and proteomic analysis of the β-catenin protein complex. Comparative functional analysis of nonbilaterian β-catenins also demonstrated sequence characteristics important for β-catenin function, and the deep origin and evolutionary conservation of the cadherin-catenin complex. Proteins coimmunoprecipitated with β-catenin included several proteins conserved across metazoans. These data provide a new insight into the conserved repertoire of β-catenin complexes.
2025-01-21 | PXD053223 | JPOST Repository
Project description:Interventions: Case series:Nil
Primary outcome(s): Ecadherin, beta catenin, CDX - 2, SOX - 2
Study Design: Non randomized control
| 2692541 | ecrin-mdr-crc
Project description:Canonical Wnt and Nodal signaling are both required for induction of the primitive streak (PS), which guides organization of the early embryo. The Wnt effector β-catenin is thought to function in these early lineage specification decisions via transcriptional activation of Nodal signaling. Here, we demonstrate a broader role for β-catenin in PS formation by analyzing its genome-wide binding in a human embryonic stem cell model of PS induction. β-catenin occupies regulatory regions in numerous PS and neural crest genes, and direct interactions between β-catenin and the Nodal effectors SMAD2/3 are required at these regions for PS gene activation. Furthermore, OCT4 binding in proximity to these sites is likewise required for PS induction, suggesting a collaborative interaction between β-catenin and OCT4. Induction of neural crest genes by β-catenin is repressed by SMAD2/3, ensuring proper lineage specification. This study provides mechanistic insight into how Wnt signaling controls early cell lineage decisions. Examination of β-catenin binding in hESC incubated in media control (RPMI), media containing CHIR or CHIR+SB for 6h and analyzed by ChIP-sequencing
2015-03-31 | E-GEOD-58476 | biostudies-arrayexpress
Project description:BAF (SWI/SNF) chromatin remodelers engage binding partners to generate sitespecific DNA accessibility. However, the basis for interactions between BAF and divergent binding partners has remained unclear. Here we tested the hypothesis that scaffold proteins augment BAF’s binding repertoire by examining β-catenin and steroidogenic factor-1 (SF-1, NR5A1), a β-catenin–dependent transcription factor central to steroid production. In steroidogenic cell lines, BAF inhibition rapidly opposed overlapping SF-1/β-catenin enhancer occupancy, thereby impairing SF-1 target activation, steroid production, and SF-1/β-catenin autoregulation. These effects arise due to β-catenin’s role as an adapter between SF-1 and an intrinsically disordered region (IDR) of the canonical BAF (cBAF) subunit ARID1A. In contrast to exclusively IDR-driven mechanisms, folded Armadillo repeats on β-catenin were required to bind cBAF. β-catenin similarly linked cBAF to SOX2, FOXO3, YAP1, and CBP/p300. Visualization of contacts highlighted β-catenin’s central role in IDR-dependent interaction of cBAF with diverse transcription factors and chromatin regulators. The cross-linking dataset was used to validate the interaction interface obtained with computational modelling.
2025-07-11 | PXD063603 | Pride