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Kim, Jun W; Marquez, Cesar P; Kostyrko, Kaja; Koehne, Amanda L; Marini, Kieren; Simpson, David R; Lee, Alex G; Leung, Stanley G; Sayles, Leanne C; Shrager, Joseph; Ferrer, Irene; Paz-Ares, Luis; Gephart, Melanie Hayden; Vicent, Silvestre; Cochran, Jennifer R; Sweet-Cordero, E Alejandro
Nature medicine, 11/2019, Letnik: 25, Številka: 11Journal Article
Proinflammatory cytokines in the tumor microenvironment can promote tumor growth, yet their value as therapeutic targets remains underexploited. We validated the functional significance of the cardiotrophin-like cytokine factor 1 (CLCF1)-ciliary neurotrophic factor receptor (CNTFR) signaling axis in lung adenocarcinoma (LUAD) and generated a high-affinity soluble receptor (eCNTFR-Fc) that sequesters CLCF1, thereby inhibiting its oncogenic effects. eCNTFR-Fc inhibits tumor growth in multiple xenograft models and in an autochthonous, highly aggressive genetically engineered mouse model of LUAD, driven by activation of oncogenic Kras and loss of Trp53. Abrogation of CLCF1 through eCNTFR-Fc appears most effective in tumors driven by oncogenic KRAS. We observed a correlation between the effectiveness of eCNTFR-Fc and the presence of KRAS mutations that retain the intrinsic capacity to hydrolyze guanosine triphosphate, suggesting that the mechanism of action may be related to altered guanosine triphosphate loading. Overall, we nominate blockade of CLCF1-CNTFR signaling as a novel therapeutic opportunity for LUAD and potentially for other tumor types in which CLCF1 is present in the tumor microenvironment.
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