Abstract
T-helper 17 (Th17) cells are a subset of CD4+ helper T cells that produce interleukin 17 (IL-17) and play a crucial role in the pathogenesis of inflammatory and autoimmune diseases. Few studies have been conducted to determine the role of Th17 cells in the tumorigenesis and development of pancreatic ductal adenocarcinoma (PDAC); however, its role is still unclear. In this study, the percentage of circulating Th17 cells and serum levels of IL-17A and IL-23 were analyzed using flow cytometry and ELISA, respectively, in 40 PDAC patients, 30 chronic pancreatitis (CP) patients and 30 healthy controls (HC). In addition, the mRNA expression levels of IL-17A, STAT3 and RORγt in tissue samples were quantified by qRT-PCR. The results showed that the percentage of circulating Th17 cells and the concentrations of serum IL-17A and IL-23 were significantly increased in PDAC patients as compared to CP and HC (P < 0.001). In addition, the higher level of IL-17A was significantly correlated with the poor overall survival of the PDAC patients. Furthermore, the frequencies of Th17 cells and IL-17A were significantly higher in stage III+IV PDAC patients versus stage I+II. A significant increase in IL-17A, STAT3 and RORγT mRNA was observed in patients with PDAC. Taken together, these findings suggest that the increased circulating Th17 cells and serum IL-17A may be involved in the development and metastasis of PDAC, and thus represent potential targets for the treatment of PDAC.
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The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.
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The authors appreciate the support provided by the Indian Council of Medical Research (ICMR), New Delhi, India (Sanction Order No.5/13/49/2018/NCD-III).
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I.A.K. was involved in the research design, performed the experiments, analyzed data and wrote the manuscript. N.S. guided some of the experimental designs. D.G. helped in the research design. S.G. and N.R.D. provided clinical specimens. S.G. helped in the research design. A.S. conceived the study, guided the experiments and corrected the manuscript.
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Khan, I.A., Singh, N., Gunjan, D. et al. Increased circulating Th17 cell populations in patients with pancreatic ductal adenocarcinoma. Immunogenetics 75, 433–443 (2023). https://doi.org/10.1007/s00251-023-01318-4
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DOI: https://doi.org/10.1007/s00251-023-01318-4