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PLoS One. 2015 May 18;10(5):e0125742. doi: 10.1371/journal.pone.0125742. eCollection 2015.

Direct Interaction of CD40 on Tumor Cells with CD40L on T Cells Increases the Proliferation of Tumor Cells by Enhancing TGF-β Production and Th17 Differentiation.

Author information

1
Laboratory of Vitamin C and Antioxidant Immunology, Department of Anatomy, Seoul National University College of Medicine, Seoul, 110-799, Korea; Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul, 110-799, Korea.
2
Laboratory of Vitamin C and Antioxidant Immunology, Department of Anatomy, Seoul National University College of Medicine, Seoul, 110-799, Korea.

Abstract

It has recently been reported that the CD40-CD40 ligand (CD40L) interaction is important in Th17 development. In addition, transforming growth factor-beta (TGF-β) promotes tumorigenesis as an immunosuppressive cytokine and is crucial in the development of Th17 cells. This study investigated the role of CD40 in breast cancer cells and its role in immunosuppressive function and tumor progression. CD40 was highly expressed in the breast cancer cell line MDA-MB231, and its stimulation with CD40 antibodies caused the up-regulation of TGF-β. Direct CD40-CD40L interaction between MDA-MB231 cells and activated T cells also increased TGF-β production and induced the production of IL-17, which accelerated the proliferation of MDA-MB231 cells through the activation of STAT3. Taken together, the direct CD40-CD40L interaction of breast tumor cells and activated T cells increases TGF-β production and the differentiation of Th17 cells, which promotes the proliferation of breast cancer cells.

PMID:
25992978
PMCID:
PMC4436336
DOI:
10.1371/journal.pone.0125742
[Indexed for MEDLINE]
Free PMC Article

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