4.2 Article

Hepatocellular Carcinoma Cells Induce Regulatory T Cells and Lead to Poor Prognosis via Production of Transforming Growth Factor-beta 1

期刊

CELLULAR PHYSIOLOGY AND BIOCHEMISTRY
卷 38, 期 1, 页码 306-318

出版社

KARGER
DOI: 10.1159/000438631

关键词

Hepatocellular carcinoma; Foxp3; Transforming growth factor-beta 1; Regulatory T cell; Prognosis

资金

  1. Shanghai Science and Technology Commission [10410709400]
  2. National Nature Science Foundation of China [81272388]

向作者/读者索取更多资源

Background/Aims: Regulatory T cells (Tregs) are associated with a poor prognosis in hepatocellular carcinoma (HCC). The purpose of the study was to explore the mechanisms of Tregs accumulation in HCC. Methods: We analyzed the frequency of Tregs in HCC by flow cytometry and immunohistochemistry. We also established a transforming growth factor (TGF)-beta 1-knockdown cell line by lentivirus-mediated RNA interference. Mouse CD4(+)CD25(-) T cells were cultured in supernatants from various cell lines. Results: HCC patients had a high frequency of Tregs, and high numbers of Tregs correlated with a poor prognosis. Liver cancer cells induced Treg production by secreting TGF-beta 1. In vivo experiments indicated that knockdown of TGF-beta 1 reduced the numbers of Tregs and metastatic nodules in mice. Conclusions: These results indicate that cancer-secreted TGF-beta 1 may increase Tregs, and TGF-beta 1 knockdown might impair immunosuppression in the tumor microenvironment by decrease Tregs. (C) 2016 The Author(s) Published by S. Karger AG, Basel

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