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Seitz, Tatjana ; John, Nora ; Sommer, Judith ; Dietrich, Peter ; Thasler, Wolfgang E. ; Hartmann, Arndt ; Evert, Katja ; Lang, Sven A. ; Bosserhoff, Anja ; Hellerbrand, Claus

Role of Fibroblast Growth Factors in the Crosstalk of Hepatic Stellate Cells and Uveal Melanoma Cells in the Liver Metastatic Niche

Seitz, Tatjana, John, Nora, Sommer, Judith , Dietrich, Peter, Thasler, Wolfgang E., Hartmann, Arndt, Evert, Katja, Lang, Sven A., Bosserhoff, Anja and Hellerbrand, Claus (2022) Role of Fibroblast Growth Factors in the Crosstalk of Hepatic Stellate Cells and Uveal Melanoma Cells in the Liver Metastatic Niche. International Journal of Molecular Sciences 23 (19), p. 11524.

Date of publication of this fulltext: 02 Dec 2022 05:23
Article
DOI to cite this document: 10.5283/epub.53291


Abstract

Hepatic metastasis is the critical factor determining tumor-associated mortality in different types of cancer. This is particularly true for uveal melanoma (UM), which almost exclusively metastasizes to the liver. Hepatic stellate cells (HSCs) are the precursors of tumor-associated fibroblasts and support the growth of metastases. However, the underlying mechanisms are widely unknown. Fibroblast ...

Hepatic metastasis is the critical factor determining tumor-associated mortality in different types of cancer. This is particularly true for uveal melanoma (UM), which almost exclusively metastasizes to the liver. Hepatic stellate cells (HSCs) are the precursors of tumor-associated fibroblasts and support the growth of metastases. However, the underlying mechanisms are widely unknown. Fibroblast growth factor (FGF) signaling is dysregulated in many types of cancer. The aim of this study was to analyze the pro-tumorigenic effects of HSCs on UM cells and the role of FGFs in this crosstalk. Conditioned medium (CM) from activated human HSCs significantly induced proliferation together with enhanced ERK and JNK activation in UM cells. An in silico database analysis revealed that there are almost no mutations of FGF receptors (FGFR) in UM. However, a high FGFR expression was found to be associated with poor survival for UM patients. In vitro, the pro-tumorigenic effects of HSC-CM on UM cells were abrogated by a pharmacological inhibitor (BGJ398) of FGFR1/2/3. The expression analysis revealed that the majority of paracrine FGFs are expressed by HSCs, but not by UM cells, including FGF9. Furthermore, the immunofluorescence analysis indicated HSCs as a cellular source of FGF9 in hepatic metastases of UM patients. Treatment with recombinant FGF9 significantly enhanced the proliferation of UM cells, and this effect was efficiently blocked by the FGFR1/2/3 inhibitor BGJ398. Our study indicates that FGF9 released by HSCs promotes the tumorigenicity of UM cells, and thus suggests FGF9 as a promising therapeutic target in hepatic metastasis.



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Details

Item typeArticle
Journal or Publication TitleInternational Journal of Molecular Sciences
Publisher:MDPI
Place of Publication:BASEL
Volume:23
Number of Issue or Book Chapter:19
Page Range:p. 11524
Date29 September 2022
InstitutionsMedicine > Lehrstuhl für Pathologie
Identification Number
ValueType
10.3390/ijms231911524DOI
KeywordsN-TERMINAL KINASE; OCULAR MELANOMA; MEK INHIBITORS; CANCER; EXPRESSION; PROGRESSION; RESISTANCE; TUMORS; GENES; GNAQ; fibroblast growth factors; fibroblast growth factor 9; uveal melanoma; hepatic metastasis; hepatic stellate cells
Dewey Decimal Classification600 Technology > 610 Medical sciences Medicine
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-532910
Item ID53291

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