Notch4 signaling induces a mesenchymal- Epithelial-like transition in melanoma cells to suppress malignant behaviors

Rad, Ehsan Bonyadi, Hammerlindl, Heinz, Wels, Christian, Popper, Ulrich, Menon, Dinoop Ravindran, Breiteneder, Heimo, Kitzwoegerer, Melitta, Hafner, Christine, Herlyn, Meenhard, Bergler, Helmut and Schaider, Helmut (2016) Notch4 signaling induces a mesenchymal- Epithelial-like transition in melanoma cells to suppress malignant behaviors. Cancer Research, 76 7: 1690-1697. doi:10.1158/0008-5472.CAN-15-1722


Author Rad, Ehsan Bonyadi
Hammerlindl, Heinz
Wels, Christian
Popper, Ulrich
Menon, Dinoop Ravindran
Breiteneder, Heimo
Kitzwoegerer, Melitta
Hafner, Christine
Herlyn, Meenhard
Bergler, Helmut
Schaider, Helmut
Title Notch4 signaling induces a mesenchymal- Epithelial-like transition in melanoma cells to suppress malignant behaviors
Journal name Cancer Research   Check publisher's open access policy
ISSN 1538-7445
0008-5472
Publication date 2016-04-01
Year available 2016
Sub-type Article (original research)
DOI 10.1158/0008-5472.CAN-15-1722
Open Access Status Not Open Access
Volume 76
Issue 7
Start page 1690
End page 1697
Total pages 8
Place of publication Philadelphia, PA United States
Publisher American Association for Cancer Research
Collection year 2017
Language eng
Abstract The effects of Notch signaling are context-dependent and both oncogenic and tumor-suppressive functions have been described. Notch signaling in melanoma is considered oncogenic, but clinical trials testing Notch inhibition in this malignancy have not proved successful. Here, we report that expression of the constitutively active intracellular domain of Notch4 (N4ICD) in melanoma cells triggered a switch from a mesenchymal-like parental phenotype to an epithelial-like phenotype. The epithelial-like morphology was accompanied by strongly reduced invasive, migratory, and proliferative properties concomitant with the downregulation of epithelial–mesenchymal transition markers Snail2 (SNAI2), Twist1, vimentin (VIM), and MMP2 and the reexpression of E-cadherin (CDH1). The N4ICD-induced phenotypic switch also resulted in significantly reduced tumor growth in vivo. Immunohistochemical analysis of primary human melanomas and cutaneous metastases revealed a significant correlation between Notch4 and E-cadherin expression. Mechanistically, we demonstrate that N4ICD induced the expression of the transcription factors Hey1 and Hey2, which bound directly to the promoter regions of Snail2 and Twist1 and repressed gene transcription, as determined by EMSA and luciferase assays. Taken together, our findings indicate a role for Notch4 as a tumor suppressor in melanoma, uncovering a potential explanation for the poor clinical efficacy of Notch inhibitors observed in this setting.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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