Journal
CLINICAL AND EXPERIMENTAL IMMUNOLOGY
Volume 188, Issue 1, Pages 96-108Publisher
WILEY
DOI: 10.1111/cei.12917
Keywords
hepatic microenvironment; hepatocellular carcinoma; liver stroma; myeloid-derived suppressor cells
Categories
Funding
- National Natural Science Foundation of China [91029741, 81171550, 81001072]
- National Key Sci-Tech Special Project of China [2012ZX10002011-006]
- Natural Science Foundation of Beijing Municipality [7152151]
Ask authors/readers for more resources
Regulating mechanisms underlying hepatic myeloid-derived suppressor cell (MDSC) accumulation remain to be described. Here, we provide evidence for the involvement of tumour-activated liver stromal cells in the process of hepatic MDSCs migration and accumulation. Our data showed an elevated frequency of MDSCs in the liver of tumour-bearing mice. Moreover, tumour-activated liver stromal cells promote MDSC migration into the liver site. Further investigation indicated higher levels of cytokine and chemokine expression in liver stromal cells after exposure to the tumour-conditioned supernatant. Notably, the expression levels of proinflammatory factors, mainly including macrophage colony stimulating factor (M-CSF), transforming growth factor- (TGF-), monocyte chemotactic protein-1 (MCP-1) and stromal-derived factor-1 (SDF-1), increased after treatment with tumour-conditioned supernatant, and blockade of MCP-1 or SDF-1 decreased the proportion of tumour infiltrated MDSCs in mice co-transplanted with liver stromal cells and tumour cells, but not in mice with only tumour cells injection. These findings demonstrate that tumour-activated liver stromal cells produce higher levels of chemokines and cytokines, which may contribute to MDSC accumulation into the liver site in patients with liver cancer.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available