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자료유형
학술저널
저자정보
서행란 (Institut Pasteur Korea) 송연화 (재단법인한국파스퇴르연구소) 최인희 (재단법인한국파스퇴르연구소) 이수연 (재단법인한국파스퇴르연구소) 김상화 (Institut Pasteur Korea) Se-Hyuk Kim (Institut Pasteur Korea) 김지호 (Institut Pasteur Korea) 이민지 (Institut Pasteur Korea)
저널정보
한국분자세포생물학회 Molecules and Cells Molecules and Cells 제44권 제1호
발행연도
2021.1
수록면
50 - 62 (13page)

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Among all cancer types, lung cancer ranks highest worldwide in terms of both incidence and mortality. The crosstalk between lung cancer cells and their tumor microenvironment (TME) has begun to emerge as the “Achilles heel” of the disease and thus constitutes an attractive target for anticancer therapy. We previously revealed that crosstalk between lung cancer cells and endothelial cells (ECs) induces chemoresistance in multicellular tumor spheroids (MCTSs). In this study, we demonstrated that factors secreted in response to crosstalk between ECs and lung cancer cells play pivotal roles in the development of chemoresistance in lung cancer spheroids. We subsequently determined that the expression of hypoxia up-regulated protein 1 (HYOU1) in lung cancer spheroids was increased by factors secreted in response to crosstalk between ECs and lung cancer cells. Direct interaction between lung cancer cells and ECs also caused an elevation in the expression of HYOU1 in MCTSs. Inhibition of HYOU1 expression not only suppressed stemness and malignancy, but also facilitated apoptosis and chemosensitivity in lung cancer MCTSs. Inhibition of HYOU1 expression also significantly increased the expression of interferon signaling components in lung cancer cells. Moreover, the activation of the PI3K/AKT/mTOR pathway was involved in the HYOU1-induced aggression of lung cancer cells. Taken together, our results identify HYOU1, which is induced in response to crosstalk between ECs and lung cancer cells within the TME, as a potential therapeutic target for combating the aggressive behavior of cancer cells.

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