Chemotherapy induces a YAP1-dependent fetal conversion to human Colorectal Cancer cells that is predictive of poor patient outcome
Sole, L.; Lobo-Jarne, T.; Villanueva, A.; Vert, A.; Guillen, Y.; Sangrador, I.; Barbachano, A.; Lop, J.; Guix, M.; Salido, M.; Bellosillo, B.; Garcia-Romero, R.; Garrido, M.; Gonzalez, J.; Martinez-Iniesta, M.; Lopez-Arribillaga, E.; Salazar, R.; Montagut, C.; Torres, F.; Iglesias, M.; Celia-Terrassa, T.; Munoz, A.; Bigas, A.; Espinosa, L.
Show abstract
Current therapy against colorectal cancer is based on DNA-damaging agents that eradicate highly proliferative malignant cells. Whether sublethal chemotherapy affects tumor cell behavior and impacts on patient outcome is primarily unstudied. We now show that sublethal chemotherapy imposes a quiescent-like state to p53 wildtype human colorectal cancer (CRC) cells that is linked to the acquisition of a fetal phenotype downstream of YAP1, similar to that observed after intestinal damage. CRC cells displaying this fetal phenotype exhibit tumor- initiating activity comparable to untreated cells but superior metastatic capacity. Notably, nuclear YAP1 accumulation, or detection of the fetal signature in tumors predict poor prognosis in CRC patients carrying p53 wildtype tumors. Collectively, our results uncover a potential adverse response of tumor cells to suboptimal chemotherapy, and identify nuclear YAP1 and fetal conversion of colorectal tumors as biomarkers for prognosis and therapy prescription. Statement of significanceChemotherapy induces a quiescent-like phenotype to colorectal cancer cells that is linked to the acquisition of a YAP1-dependent fetal signature. Notably, this signature is predictive of patient outcome in different cohorts of human colorectal cancer.
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