Journal
EBIOMEDICINE
Volume 46, Issue -, Pages 119-132Publisher
ELSEVIER
DOI: 10.1016/j.ebiom.2019.07.058
Keywords
Hepatoccllular carcinoma; Surgical resection; IL-11-STAT3 signaling; Recurrence; Napabucasin
Funding
- theNatural Science Foundation of China [81788101]
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Background: Patients undergoing surgical resection of hepatocellular carcinoma (HCC) are at risk of recurrence; however, the underlying mechanism remains poorly understood. Methods: Through the analysis of gene expression profiles in tumour and matched normal tissues from patients with hepatocellular carcinoma (HCC), we identified differences in interleukin-11 (IL-11) expression. Further, we used genetic mouse, orthotopic tumour, chemically induced, and orthotopic allograft models to study the correlation between IL-11 and postsurgical recurrence. Additionally, we conducted a series of experiments, including histology and immunohistochemistry analysis, three-dimensional culture, immunofluorescence, western blotting, enzyme-linked immunosorbent assay (ELISA) and flow cytometry to investigate the role of IL-11-signal transducer and activator of transcription 3 (STAT3) signaling in HCC recurrence. Findings: We demonstrate that IL-11 levels increase after surgery, triggering HCC outgrowth. Accordingly, pharmacological blocking of IL-11-STAT3 signaling in model systems significantly alleviates tumour cell proliferation and suppresses postsurgical recurrence of HCC tumours. Interpretation: These data demonstrate that IL-11 has a central role in postsurgical HCC recurrence, and that inhibition of IL-11-STAT3 signaling is a potential therapeutic strategy to prevent recurrence. (C) 2019 Published by Elsevier B.V.
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