The atypical kinase RIOK1 promotes tumor growth and invasive behavior
Weinberg, FlorianInstitute of Molecular Medicine and Cell Research (IMMZ), Faculty of Medicine, Albert-Ludwigs-University (ALU), Freiburg, Germany - Faculty of Biology, ALU, Freiburg, Germany - BIOSS Centre for Biological Signalling Studies, BIOSS, ALU, Germany
Reischmann, NadineInstitute of Molecular Medicine and Cell Research (IMMZ), Faculty of Medicine, Albert-Ludwigs-University (ALU), Freiburg, Germany - Faculty of Biology, ALU, Freiburg, Germany - Spemann Graduate School of Biology and Medicine (SGBM), ALU, Freiburg, Germany
Fauth, LisaInstitute for Surgical Pathology, Medical Center and Faculty of Medicine, ALU, Germany
Taromi, SanazDepartment of Hematology and Oncology, University Medical Center, ALU, Freiburg, Germany
Mastroianni, JustinFaculty of Biology, ALU, Freiburg, Germany - Department of Hematology and Oncology, University Medical Center, ALU, Freiburg, Germany
Köhler, MartinInstitute of Molecular Medicine and Cell Research (IMMZ), Faculty of Medicine, Albert-Ludwigs-University (ALU), Freiburg, Germany - Faculty of Biology, ALU, Freiburg, Germany - Spemann Graduate School of Biology and Medicine (SGBM), ALU, Freiburg, Germany
Halbach, SebastianInstitute of Molecular Medicine and Cell Research (IMMZ), Faculty of Medicine, Albert-Ludwigs-University (ALU), Freiburg, Germany - Faculty of Biology, ALU, Freiburg, Germany - Spemann Graduate School of Biology and Medicine (SGBM), ALU, Freiburg, Germany
Becker, Andrea C.Freiburg Institute for Advanced Studies (FRIAS), ALU, Freiburg, Germany - Department of Dermatology, University Medical Center - ALU, Freiburg, Germany
Deng, NiantaoGarvan Institute of Medical Research, Darlinghurst, New South Wales, Australia - St Vincent's Clinical School, Faculty of Medicine, UNSW, Sydney, Australia
Schmitz, TatjanaInstitute of Molecular Medicine and Cell Research (IMMZ), Faculty of Medicine, Albert-Ludwigs-University (ALU), Freiburg, Germany
Uhl, Franziska MariaInstitute of Molecular Medicine and Cell Research (IMMZ), Faculty of Medicine, Albert-Ludwigs-University (ALU), Freiburg, Germany - Faculty of Biology, ALU, Freiburg, Germany - Department of Hematology and Oncology, University Medical Center, ALU, Freiburg, Germany
Herbener, NicolaInstitute for Surgical Pathology, Medical Center and Faculty of Medicine, ALU, Germany
Riedel, BiancaInstitute for Surgical Pathology, Medical Center and Faculty of Medicine, ALU, Germany
Beier, FabianInstitute for Surgical Pathology, Medical Center and Faculty of Medicine, ALU, Germany
Swarbrick, AlexanderGarvan Institute of Medical Research, Darlinghurst, New South Wales, Australia - St Vincent's Clinical School, Faculty of Medicine, UNSW, Sydney, Australia
Lassmann, SilkeBIOSS Centre for Biological Signalling Studies, BIOSS, ALU, Germany - Institute for Surgical Pathology, Medical Center and Faculty of Medicine, ALU, Germany - German Cancer Consortium (DKTK, Freiburg) and German Cancer Research Center (DKFZ), Heidelberg, Germany
Dengjel, JörnBIOSS Centre for Biological Signalling Studies, BIOSS, ALU, Germany - Freiburg Institute for Advanced Studies (FRIAS), ALU, Freiburg, Germany - Department of Dermatology, University Medical Center - ALU, Freiburg, Germany - Department of Biology, University of Fribourg, Fribourg, Switzerland
Zeiser, RobertBIOSS Centre for Biological Signalling Studies, BIOSS, ALU, Germany - Department of Hematology and Oncology, University Medical Center, ALU, Freiburg, Germany
Brummer, TilmanInstitute of Molecular Medicine and Cell Research (IMMZ), Faculty of Medicine, Albert-Ludwigs-University (ALU), Freiburg, Germany - Faculty of Biology, ALU, Freiburg, Germany - BIOSS Centre for Biological Signalling Studies, BIOSS, ALU, Germany
English
Despite being overexpressed in different tumor entities, RIO kinases are hardly characterized in mammalian cells. We investigated the role of these atypical kinases in different cancer cells. Using isogenic colon-, breast- and lung cancer cell lines, we demonstrate that knockdown of RIOK1, but not of RIOK2 or RIOK3, strongly impairs proliferation and invasiveness in conventional and 3D culture systems. Interestingly, these effects were mainly observed in RAS mutant cancer cells. In contrast, growth of RAS wildtype Caco-2 and Bcr-Abl-driven K562 cells is not affected by RIOK1 knockdown, suggesting a specific requirement for RIOK1 in the context of oncogenic RAS signaling. Furthermore, we show that RIOK1 activates NF-κB signaling and promotes cell cycle progression. Using proteomics, we identified the pro-invasive proteins Metadherin and Stathmin1 to be regulated by RIOK1. Additionally, we demonstrate that RIOK1 promotes lung colonization in vivo and that RIOK1 is overexpressed in different subtypes of human lung- and breast cancer. Altogether, our data suggest RIOK1 as a potential therapeutic target, especially in RAS-driven cancers.