Journal Article

Transient IGF-1R inhibition combined with osimertinib eradicates AXL-low expressing EGFR mutated lung cancer

Taniguchi, Hirokazu, Wang, Wei, Kita, Kenji, Matsumoto, Kunio, Yamashita, Kaname, Uehara, Hisanori, Ishimura, Akihiko, Atagi, Shinji, Ohtsubo, Koshiro, Yamano, Tomoyoshi, Arai, Sachiko, Yamada, Tadaaki, Terashima, Minoru, Tanimoto, Azusa, Suzuki, Takeshi, Taniguchi, Yoshihiko, Yoshimura, Akihiro, Wang, Rong, Matsumoto, Isao, Nishiyama, Akihiro, Kaira, Kyoichi, Han, Xujun, Fukuda, Koji, Takeuchi, Shinji, Yano, Seiji, Takayama, Koichi, Hanayama, Rikinari

2020

Overview

Drug tolerance is the basis for acquired resistance to epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) including osimertinib, through mechanisms that still remain unclear. Here, we show that while AXL-low expressing EGFR mutated lung cancer (EGFRmut-LC) cells are more sensitive to osimertinib than AXL-high expressing EGFRmut-LC cells, a small population emerge osimertinib tolerance. The tolerance is mediated by the increased expression and phosphorylation of insulin-like growth factor-1 receptor (IGF-1R), caused by the induction of its transcription factor FOXA1. IGF-1R maintains association with EGFR and adaptor proteins, including Gab1 and IRS1, in the presence of osimertinib and restores the survival signal. In AXL-low-expressing EGFRmut-LC cell-derived xenograft and patient-derived xenograft models, transient IGF-1R inhibition combined with continuous osimertinib treatment could eradicate tumors and prevent regrowth even after the cessation of osimertinib. These results indicate that optimal inhibition of tolerant signals combined with osimertinib may dramatically improve the outcome of EGFRmut-LC.

• Publisher: Nature Publishing Group,Nature Publishing Group UK,Nature Portfolio
• Subject: Acrylamides - pharmacology / Acrylamides - therapeutic use / Activation / Adaptor proteins / Aged, 80 and over / Aniline Compounds - pharmacology / Aniline Compounds - therapeutic use / Animals / Axl protein / Carcinoma, Non-Small-Cell Lung - drug therapy / Carcinoma, Non-Small-Cell Lung - genetics / Carcinoma, Non-Small-Cell Lung - pathology / Cell Line, Tumor / Cell Survival - drug effects / Drug tolerance / Epidermal growth factor / Epidermal growth factor receptors / ErbB Receptors - genetics / Gene Expression Regulation, Neoplastic - drug effects / Growth factors / Hepatocyte Nuclear Factor 3-alpha - metabolism / Humans / Imidazoles - pharmacology / Immunological tolerance / Inhibitors / Insulin / Insulin-like growth factor I / Insulin-like growth factors / Kinases / Lung cancer / Lung Neoplasms - drug therapy / Lung Neoplasms - genetics / Lung Neoplasms - pathology / Male / Mice / Models, Biological / Mutation - genetics / Phosphorylation / Phosphorylation - drug effects / Protein-tyrosine kinase / Proto-Oncogene Proteins - metabolism / Pyrazines - pharmacology / Receptor Protein-Tyrosine Kinases - metabolism / Receptor, IGF Type 1 - antagonists & inhibitors / Receptor, IGF Type 1 - genetics / Receptor, IGF Type 1 - metabolism / Receptors / Regrowth / Resistance factors / RNA, Messenger - genetics / RNA, Messenger - metabolism / Signal transduction / Targeted cancer therapy / Tumors / Tyrosine / Up-Regulation - drug effects / Xenografts / Xenotransplantation