Abstract：
:Cancer cell-derived secretomes have been documented to play critical roles in cancer progression. Intriguingly, alternative extracellular roles of intracellular proteins are involved in various steps of tumor progression, which can offer strategies to fight cancer. Herein, we identify lung cancer progression-associated secretome signatures using mass spectrometry analysis. Among them, PKM2 is verified to be highly expressed and secreted in lung cancer cells and clinical samples. Functional analyses demonstrates that secreted PKM2 facilitates tumor metastasis. Furthermore, mass spectrometry analysis and functional validation identify integrin β1 as a receptor of secreted PKM2. Mechanistically, secreted PKM2 directly bound to integrin β1 and subsequently activated the FAK/SRC/ERK axis to promote tumor metastasis. Collectively, our findings suggest that PKM2 is a potential serum biomarker for diagnosing lung cancer and that targeting the secreted PKM2-integrin β1 axis can inhibit lung cancer development, which provides evidence of a potential therapeutic strategy in lung cancer.
journal_name
Cell Repjournal_title
Cell reportsauthors
Wang C,Zhang S,Liu J,Tian Y,Ma B,Xu S,Fu Y,Luo Ydoi
10.1016/j.celrep.2020.01.037subject
Has Abstractpub_date
2020-02-11 00:00:00pages
1780-1797.e6issue
6issn
2211-1247pii
S2211-1247(20)30052-8journal_volume
30pub_type
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