Article Myosin II Reactivation and Cytoskeletal Remodeling as a Hallmark and a Vulnerability in Melanoma Therapy Resistance Graphical Abstract Authors Jose L. Orgaz, Eva Crosas-Molist, Amine Sadok, ..., actin-Myosin dynamics Sophia N. Karagiannis, Ilaria Malanchi, Victoria Sanz-Moreno transcriptional re-wiring cytoskeleton ROCK-Myosin II- Correspondence remodeling addicted tumor
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[email protected] (V.S.-M.) MAPKi anti-PD-1 MAPK Myosin II Cross-resistant ROCK/Myosin II In Brief phenotype inhibition Orgaz et al. show that myosin II activity ROCK/Myosin II ROCK/Myosin II increases during melanoma adaptation to PD-L1 ROS PD-L1 ROS MAPK pathway inhibition. ROCK-myosin II signaling supports survival of resistant p-H2A.X melanoma cells and promotes immunosuppression. ROCK inhibitors FOXP3+ + Treg CD206+ CD206 improve the efficacy of MAPK inhibitors CD206+ φ FOXP3+ Mφ M Mφ Treg and immunotherapies in melanoma FOXP3+ FOXP3+ + + CD206 Treg Treg CD206 φ + M + CD206 Mφ models. + CD206 φ FOXP3 φ M Treg M Highlights d Therapy-resistant melanoma cells restore myosin II activity to increase survival d High myosin II activity identifies targeted and immunotherapy-resistant melanomas d ROCK-myosin II inhibition increases ROS-DNA damage and decreases PD-L1 and Tregs d ROCK inhibition enhances efficacy of MAPK inhibitors and immunotherapies Orgaz et al., 2020, Cancer Cell 37, 85–103 January 13, 2020 ª 2019 The Authors. Published by Elsevier Inc. https://doi.org/10.1016/j.ccell.2019.12.003 Cancer Cell Article Myosin II Reactivation and Cytoskeletal Remodeling as a Hallmark and a Vulnerability in Melanoma Therapy Resistance Jose L.