Qin Hu

Jiangsu University, Chenkiang, Jiangsu Sheng, China

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Publications (2)4.06 Total impact

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    ABSTRACT: Chemokine/chemokine receptor interactions play a critical role in lymphocyte infiltration of tumors. Recent studies suggest that Th17 cells accumulate within many types of tumors, although the mechanisms that control this are unclear. We studied the distribution and phenotypic features of Th17 cells chemokine receptors, as well as the mRNA levels of CCL2, CCL17, CCL20, and CCL22 in tumors of patients with esophageal squamous cell carcinoma. We found that Th17 cells accumulated in tumors, and high expressions of CCR4, CCR6 were detected in Th17 cells. Levels of the chemokines CCL17, CCL20, and CCL22 in tumors were significantly higher than in tumor-free tissues, and were positively correlated with the distribution of Th17 cells in tumors. Furthermore, an in vitro migration assay showed that CCL17, CCL20 and CCL22 had chemotactic effects on tumor-derived Th17 cells. In conclusion, the CCR4-CCL17/22 and CCR6-CCL20 axis might play an important role in Th17 cell infiltration of tumors.
    No preview · Article · Jul 2012 · Human immunology
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    ABSTRACT: Increased interleukin-17 (IL-17)-producing Th (Th17) cells have been described in a variety of human carcinoma cases, however, the mechanism of Th17 cells' accumulation in a tumor microenvironment remains elusive. This study was designed to investigate whether Th17 cells were involved in the development of esophageal cancer. We found that the proportion of Th17 cells increased within the peripheral blood and tumor tissues of esophageal cancer patients. Furthermore, the proportion of circulating Th17 cells was higher in advanced esophageal cancer patients than that in early esophageal cancer patients. In addition, the Th17 cells differentiation-related cytokines (IL-23, IL-1β, and IL-6) and accumulation-related chemokines (CCL22 and CCL20) were present in a tumor microenvironment. Therefore, the findings may partly explain the cause for the increased proportion of Th17 cells and indicate a potential prognostic marker of Th17 cells in esophageal cancer.
    No preview · Article · Oct 2011 · Cellular Immunology