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, 65 (1), 24-32

Interleukin-32 Contributes to Invasion and Metastasis of Primary Lung Adenocarcinoma via NF-kappaB Induced Matrix Metalloproteinases 2 and 9 Expression

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Interleukin-32 Contributes to Invasion and Metastasis of Primary Lung Adenocarcinoma via NF-kappaB Induced Matrix Metalloproteinases 2 and 9 Expression

Qingli Zeng et al. Cytokine.

Abstract

Interleukin (IL)-32 is a novel proinflammatory cytokine, which has been shown to play an important role in tumor growth and metastasis. Here, we discovered that IL-32 was aberrantly over-expressed in lung adenocarcinoma tissues and cell lines. Positive expression of IL-32 significantly correlated with the clinical staging, and lymph node and distant metastases. High expression of IL-32 was an independent indicator of poor prognosis in lung adenocarcinoma patients. Moreover, IL-32-facilitated cell migration and invasion in vitro was mediated through transactivation of the nuclear transcription factor (NF)-κB signaling pathway and subsequent upregulation of matrix metalloproteinase (MMP)-2 and MMP9 expression. These studies demonstrate that IL-32 plays a role in the tumor-associated inflammatory microenvironment and that overexpression of IL-32 contributes to invasion and metastasis in primary lung adenocarcinoma, suggesting that it may have clinical utility as a prognostic biomarker and potential target for immunotherapy in lung adenocarcinoma.

Keywords: IL-32; Lung adenocarcinoma; MMP2 and MMP9; Matrix metalloproteinase; Metastasis; NF-kappaB; NF-κB; NSCLC; interleukin-32; matrix metalloproteinase 2 and 9; non-small cell lung carcinoma.

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