Dataset Information

TWEAK/Fn14 signalling promotes cholangiocarcinoma niche formation and progression

ABSTRACT: Cholangiocarcinoma is a cancer of the hepatic bile ducts that is typically detected at a stage too advanced for resection. Additionally, chemotherapy is of limited efficacy, hence, novel therapeutic approaches are urgently required, including targeting of the cancer stroma. A macrophage-derived signal, tumour necrosis factor-like weak inducer of apoptosis (TWEAK), binds to cell-surface fibroblast growth factor-inducible 14 (Fn14), on cholangiocarcinoma cells to induce cytokine and chemokine expression and secretion. These TWEAK-inducible factors from cholangiocarcinoma cells can also affect macrophage polarisation. We characterised proteins secreted by four well-characterised human cholangiocarcinoma cell lines in the presence or absence of recombinant human TWEAK (100 ng/ml), to discover novel TWEAK-inducible factors that could drive pro-tumour niche formation.

INSTRUMENT(S): micrOTOF-Q II

ORGANISM(S): Homo Sapiens (ncbitaxon:9606)

SUBMITTER: Prof.Stuart Forbes

PROVIDER: MSV000084273 | MassIVE |

SECONDARY ACCESSION(S): PXD015317

REPOSITORIES: MassIVE

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TWEAK/Fn14 signalling promotes cholangiocarcinoma niche formation and progression.

Dwyer Benjamin J BJ Jarman Edward J EJ Gogoi-Tiwari Jully J Ferreira-Gonzalez Sofia S Boulter Luke L Guest Rachel V RV Kendall Timothy J TJ Kurian Dominic D Kilpatrick Alastair M AM Robson Andrew J AJ O'Duibhir Eoghan E Man Tak Yung TY Campana Lara L Starkey Lewis Philip J PJ Wigmore Stephen J SJ Olynyk John K JK Ramm Grant A GA Tirnitz-Parker Janina E E JEE Forbes Stuart J SJ

Journal of hepatology 20201119 4

<h4>Background & aims</h4>Cholangiocarcinoma (CCA) is a cancer of the hepatic bile ducts that is rarely resectable and is associated with poor prognosis. Tumour necrosis factor-like weak inducer of apoptosis (TWEAK) is known to signal via its receptor fibroblast growth factor-inducible 14 (Fn14) and induce cholangiocyte and myofibroblast proliferation in liver injury. We aimed to characterise its role in CCA.<h4>Methods</h4>The expression of the TWEAK ligand and Fn14 receptor was assessed immuno ...[more]

PMID: 33221352

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Project description:Transcriptomic profiling Background Cholangiocarcinoma accounts for 5-10% of primary hepatic cancers. The etiology is unclear and patients are often diagnosed without risk factors. Resection is the only curative treatment although patients frequently remain undiagnosed until advanced stage of disease. Methods To construct molecular classification of cholangiocarcinoma, we profiled the transcriptomes of 104 freshly-frozen tumors and 59 matched non-cancerous livers obtained from Australia, Europe and the United States. We also performed mutational analysis of KRAS, EGFR and BRAF, and used laser-capture microdissection to obtain independent gene expression profiles for epithelial and stromal compartments in a subset of tumors. The selected target genes were validated by western blotting and immunohistochemistry. Results Transcriptomic profiling classified cholangiocarcinoma into two distinct subclasses defined by survival (P<0.0007) and early recurrence (P<0.001). Applying leave-one-out cross-validation, we optimized the prognostic classifier to 238 genes which were positively enriched in the epithelial tumor compartment. A deregulated HER2 network was associated with the epithelial compartment which also showed a frequent overexpression of Ki67, EGFR, MET and pRPS6 whereas inflammatory cytokines were enriched in tumor stroma specifically in patients with poor prognosis. KRAS mutations were found in 24.6% of patients with poor disease outcome. Conclusion Our study presents new insights into pathogenesis of cholangiocarcinoma and stratification of the patients according to survival and recurrence. Identification of a subgroup of patients among the poor prognostic cohort characterized by KRAS mutations and oncogenic-addiction may provide a novel therapeutic opportunity for this treatment-refractory malignancy. Profiling of individual cholangiocarcinomas and non-cancerous matched surrounding livers using normal bile ducts as reference

Project description:Photodynamic therapy (PDT) of solid cancers comprises the administration of a photosensitizer followed by illumination of the photosensitizerreplete tumor with laser light. This induces a state of local oxidative stress, culminating in the destruction of tumor tissue and microvasculature and induction of an anti-tumor immune response. However, some tumor types, including perihilar cholangiocarcinoma, are relatively refractory to PDT, which may be attributable to the activation of survival pathways in tumor cells following PDT (i.e., activator protein 1 (AP-1)-, nuclear factor of kappa light polypeptide gene enhancer in B-cells (NF-ÎºB)-, hypoxia-inducible factor 1-alpha (HIF-1Î±)-, nuclear factor (erythroid-derived 2)-like 2 (NFE2L2), and unfolded protein response-mediated pathways). To assess the activation of survival pathways after PDT, human perihilar cholangiocarcinoma (SK-ChA-1) cells were subjected to PDT with zinc phthalocyanine (ZnPC)-encapsulating liposomes. Following a 30-minute incubation with liposomes, the cells were either left untreated or treated at low (50 mW) or high (500 mW) laser power (cumulative light dose of 15 J/cm2). Cells were harvested 90 minutes post-PDT and whole genome expression analysis was performed using Illumina HumanHT-12 v4 expression beadchips. Hilar cholangiocarcinoma (SK-ChA-1) cells were incubated with PBS (control group) or 500 Î¼M zinc phthalocyanine (ZnPC)-encapsulating liposomes (ZnPC-ITLs, final lipid concentration). After 30 minutes, cells that were incubated with ZnPC-ITLs were either kept in the dark (ITL group) or were treated with 500-mW (ITL 500) or 50-mW (ITL 50) laser light (n = 3 per group, cumulative light dose of 15 J/cm2). Ninety minutes after photodynamic therapy, total cellular RNA was isolated and gene expression levels were analyzed by using the Illumina HumanHT-12 v4 platform. The data was analyzed in the context of survival signalling and comparisons were made with the control group.

Dataset Information

TWEAK/Fn14 signalling promotes cholangiocarcinoma niche formation and progression

Publications

TWEAK/Fn14 signalling promotes cholangiocarcinoma niche formation and progression.

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