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Type of publication: Journal Article
Type of document: Full Paper

Year: 2018

Authors: Sternberg, C; Gruber, W; Eberl, M; Tesanovic, S; Stadler, M; Elmer, DP; Schlederer, M; Grund, S; Roos, S; Wolff, F; Kaur, S; Mangelberger, D; Lehrach, H; Hache, H; Wierling, C; Laimer, J; Lackner, P; Wiederstein, M; Kasper, M; Risch, A; Petzelbauer, P; Moriggl, R; Kenner, L; Aberger, F

Title: Synergistic cross-talk of hedgehog and interleukin-6 signaling drives growth of basal cell carcinoma.

Source: Int J Cancer. 2018; 143(11):2943-2954

Authors Vetmeduni Vienna:

Kenner Lukas
Moriggl Richard
Sternberg Christina
Tangermann Simone

Vetmed Research Units
Institute of Pathology, Pathology of Laboratory Animals
Institute of Animal Breeding and Genetics, Unit for Functional Cancer Genomics

Persistent activation of hedgehog (HH)/GLI signaling accounts for the development of basal cell carcinoma (BCC), a very frequent nonmelanoma skin cancer with rising incidence. Targeting HH/GLI signaling by approved pathway inhibitors can provide significant therapeutic benefit to BCC patients. However, limited response rates, development of drug resistance, and severe side effects of HH pathway inhibitors call for improved treatment strategies such as rational combination therapies simultaneously inhibiting HH/GLI and cooperative signals promoting the oncogenic activity of HH/GLI. In this study, we identified the interleukin-6 (IL6) pathway as a novel synergistic signal promoting oncogenic HH/GLI via STAT3 activation. Mechanistically, we provide evidence that signal integration of IL6 and HH/GLI occurs at the level of cis-regulatory sequences by co-binding of GLI and STAT3 to common HH-IL6 target gene promoters. Genetic inactivation of Il6 signaling in a mouse model of BCC significantly reduced in vivo tumor growth by interfering with HH/GLI-driven BCC proliferation. Our genetic and pharmacologic data suggest that combinatorial HH-IL6 pathway blockade is a promising approach to efficiently arrest cancer growth in BCC patients.© 2018 The Authors. International Journal of Cancer published by John Wiley & Sons Ltd on behalf of UICC.

Keywords Pubmed: Animals
Carcinoma, Basal Cellmetabolismpathology
Cell Proliferationphysiology
Hedgehog Proteinsmetabolism
Mice, Transgenic
Signal Transductionphysiology
Skin Neoplasmsmetabolismpathology

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