Journal
CELLULAR PHYSIOLOGY AND BIOCHEMISTRY
Volume 51, Issue 4, Pages 1839-1851Publisher
Cell Physiol Biochem Press GmbH & Co
DOI: 10.1159/000495706
Keywords
Il-35; Non-small Cell Lung Cancer; NSCLC; Interleukin-35
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Funding
- Key Scientific and Technological Research Project of Henan provincial education department [13A320061]
- Kaifeng innovation and technology team Project
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Background/Aims: Lung cancer continues to be the leading cause of cancer related deaths worldwide due to its high incidence, malignant behavior and lack of major advancements in treatment strategy. The occurrence and development of lung cancer is closely related to inflammation. Thus, we conducted the present study to investigate the effects of IL-35 (Interleukin 35), a newly identified anti-inflammatory factor, on non-small cell lung cancer (NSCLC), which accounts for about 85% of all lung cancers. Methods: We first evaluated the IL-35 expression in 384 pairs of NSCLC samples and their adjacent normal mucosa by real-time PCR, ELISA (Enzyme-linked immunoassay) and tissue microarrays. Then the role of IL-35 on patient survival rates, cancer progression and their sensitivity to chemotherapy drugs were assessed. Results: IL-35 was barely expressed in the NSCLC tissues but highly expressed in the adjacent normal tissues. The down-regulation of IL-35 was significantly correlated with the results of American Joint Committee on Cancer stage, differentiation and it was also shown to be an independent prognostic indicator of disease-free survival and overall survival for patients with NSCLC. Overexpression of IL-35 in NSCLC cells suppressed cell migration, invasion, proliferation, colony formation through suppressing beta-catenin. IL-35 inhibited NSCLC formation in the mice model and sensitize the cancer cells to chemotherapy drugs. Conclusion: Our results showed that IL-35 plays an inhibitory role in NSCLC development and function as a novel prognostic indicator and a potential therapeutic target. (C) 2018 The Author(s) Published by S. Karger AG, Basel.
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