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

• Wang, Rong

• Yamada, Tadaaki

• Kita, Kenji

• Taniguchi, Hirokazu

• Arai, Sachiko

• Fukuda, Koji

• Terashima, Minoru

• Ishimura, Akihiko

• Nishiyama, Akihiro

• Tanimoto, Azusa

• Takeuchi, Shinji

• Ohtsubo, Koshiro

• Yamashita, Kaname

• Yamano, Tomoyoshi

• Yoshimura, Akihiro

• Takayama, Koichi

• Kaira, Kyoichi

• Taniguchi, Yoshihiko

• Atagi, Shinji

• Uehara, Hisanori

• Hanayama, Rikinari

• Matsumoto, Isao

• Han, Xujun

• Matsumoto, Kunio

• Wang, Wei

• Suzuki, Takeshi

• Yano, Seiji

抄録

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.

収録刊行物

• Nature Communications

  Nature Communications 11 4607-, 2020-09-14

  Springer Nature

キーワード

• General Physics and Astronomy
• General Biochemistry, Genetics and Molecular Biology
• General Chemistry
• Multidisciplinary

詳細情報

• CRID: 1050009457584281088
• NII論文ID: 120007186801
• NII書誌ID: AA12645905
• ISSN: 20411723
• DOI: 10.1038/s41467-020-18442-4
• Web Site: http://repo.lib.tokushima-u.ac.jp/116609
• Web Site: https://www.nature.com/articles/s41467-020-18442-4.pdf
• Web Site: https://www.nature.com/articles/s41467-020-18442-4
• 本文言語コード: en
• 資料種別: journal article
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