TY - JOUR
T1 - Paradoxical Activation of Oncogenic Signaling as a Cancer Treatment Strategy
AU - Dias, Matheus Henrique
AU - Friskes, Anoek
AU - Wang, Siying
AU - Fernandes Neto, Joao M
AU - van Gemert, Frank
AU - Mourragui, Soufiane
AU - Papagianni, Chrysa
AU - Kuiken, Hendrik J
AU - Mainardi, Sara
AU - Alvarez-Villanueva, Daniel
AU - Lieftink, Cor
AU - Morris, Ben
AU - Dekker, Anna
AU - van Dijk, Emma
AU - Wilms, Lieke H S
AU - da Silva, Marcelo S
AU - Jansen, Robin A
AU - Mulero-Sánchez, Antonio
AU - Malzer, Elke
AU - Vidal, August
AU - Santos, Cristina
AU - Salazar, Ramón
AU - Wailemann, Rosangela A M
AU - Torres, Thompson E P
AU - De Conti, Giulia
AU - Raaijmakers, Jonne A
AU - Snaebjornsson, Petur
AU - Yuan, Shengxian
AU - Qin, Wenxin
AU - Kovach, John S
AU - Armelin, Hugo A
AU - Te Riele, Hein
AU - van Oudenaarden, Alexander
AU - Jin, Haojie
AU - Beijersbergen, Roderick L
AU - Villanueva, Alberto
AU - Medema, Rene H
AU - Bernards, Rene
N1 - ©2024 The Authors; Published by the American Association for Cancer Research.
PY - 2024/7/1
Y1 - 2024/7/1
N2 - Cancer homeostasis depends on a balance between activated oncogenic pathways driving tumorigenesis and engagement of stress response programs that counteract the inherent toxicity of such aberrant signaling. Although inhibition of oncogenic signaling pathways has been explored extensively, there is increasing evidence that overactivation of the same pathways can also disrupt cancer homeostasis and cause lethality. We show here that inhibition of protein phosphatase 2A (PP2A) hyperactivates multiple oncogenic pathways and engages stress responses in colon cancer cells. Genetic and compound screens identify combined inhibition of PP2A and WEE1 as synergistic in multiple cancer models by collapsing DNA replication and triggering premature mitosis followed by cell death. This combination also suppressed the growth of patient-derived tumors in vivo. Remarkably, acquired resistance to this drug combination suppressed the ability of colon cancer cells to form tumors in vivo. Our data suggest that paradoxical activation of oncogenic signaling can result in tumor-suppressive resistance. Significance: A therapy consisting of deliberate hyperactivation of oncogenic signaling combined with perturbation of the stress responses that result from this is very effective in animal models of colon cancer. Resistance to this therapy is associated with loss of oncogenic signaling and reduced oncogenic capacity, indicative of tumor-suppressive drug resistance.
AB - Cancer homeostasis depends on a balance between activated oncogenic pathways driving tumorigenesis and engagement of stress response programs that counteract the inherent toxicity of such aberrant signaling. Although inhibition of oncogenic signaling pathways has been explored extensively, there is increasing evidence that overactivation of the same pathways can also disrupt cancer homeostasis and cause lethality. We show here that inhibition of protein phosphatase 2A (PP2A) hyperactivates multiple oncogenic pathways and engages stress responses in colon cancer cells. Genetic and compound screens identify combined inhibition of PP2A and WEE1 as synergistic in multiple cancer models by collapsing DNA replication and triggering premature mitosis followed by cell death. This combination also suppressed the growth of patient-derived tumors in vivo. Remarkably, acquired resistance to this drug combination suppressed the ability of colon cancer cells to form tumors in vivo. Our data suggest that paradoxical activation of oncogenic signaling can result in tumor-suppressive resistance. Significance: A therapy consisting of deliberate hyperactivation of oncogenic signaling combined with perturbation of the stress responses that result from this is very effective in animal models of colon cancer. Resistance to this therapy is associated with loss of oncogenic signaling and reduced oncogenic capacity, indicative of tumor-suppressive drug resistance.
KW - Humans
KW - Signal Transduction
KW - Animals
KW - Protein Phosphatase 2/metabolism
KW - Mice
KW - Cell Line, Tumor
KW - Colonic Neoplasms/drug therapy
KW - Xenograft Model Antitumor Assays
KW - Cell Cycle Proteins/metabolism
KW - Protein-Tyrosine Kinases/antagonists & inhibitors
KW - Drug Resistance, Neoplasm
KW - Nuclear Proteins/metabolism
KW - DNA Replication
U2 - 10.1158/2159-8290.CD-23-0216
DO - 10.1158/2159-8290.CD-23-0216
M3 - Article
C2 - 38533987
SN - 2159-8274
VL - 14
SP - 1276
EP - 1301
JO - Cancer Discovery
JF - Cancer Discovery
IS - 7
ER -