• 1. Department of Colorectal Surgery, The Affiliated Hospital of Guizhou Medical University, Guiyang 550004, P. R. China;
  • 2. Department of General Surgery, Dazhou Central Hospital, Dazhou, Sichuan 635000, P. R. China;
  • 3. Department of General Surgery, Liangping District People’s Hospital, Chongqing 405200, P. R. China;
  • 4. Department of Surgery, Longnan People’s Hospital, Longnan, Jiangxi 341700, P. R. China;
YAN Dengguo, Email: dengguoy@163.com
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Objective To explore the changes of cytokines in the tumor microenvironment of colorectal cancer and the relationship between the expression of CD16a mRNA and cytokines in the microenvironment.Methods RT-PCR and flow cytometry microsphere array (CBA) were used to detect the expressions of CD16a mRNA, as well as cytokines of Th1 [interleukin (IL)-2, IL-12, and interferone-γ (IFN-γ)], Th2 (IL-4, IL-6, and IL-10), tumor necrosis factor-α (TNF-α), and vascular endothelial growth factor (VEGF) in the tumor and the adjacent tissues of 42 patients with colorectal cancer, respectively, and the correlation between the expression of CD16a mRNA and cytokines in the microenvironment was analyzed.Results The expressions of IL-6, TNF-α, and VEGF in colorectal cancer tissues were significantly higher than those in the adjacent tissues (P<0.05). There was no significant difference in the expression of IL-2,IL-4, IL-10, IL-12, and IFN-γ between the two kinds of tissues (P>0.05). Clinicopathological factor analysis showed that, the levels of IL-6 and VEGF in the colorectal cancer patients with preoperative normal CEA were significantly higher than those with elevated CEA (P<0.05). Correlation analysis showed that the expression of IL-6 was negatively correlated with expression of CD16a mRNA (P<0.05).Conclusions The expressions of IL-6, TNF-α, and VEGF in tumor tissues were significantly higher than adjacent tissues, and the effect of angiogenic and immunosuppression were enhanced. The expression of CD16a mRNA in the microenvironment of colorectal cancer tumor is negatively correlated with the expression of IL-6.

Citation: WANG Lei, CHEN Xi, YAN Dengguo, LIANG Zhengzi, CAO Feilong, ZHEN Yunhuan, LI Guosheng, CHENG Haiyu. Expression change of cytokine and its correlation with expression of CD16a mRNA in tumor microenvironment of colorectal cancer. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2020, 27(3): 291-297. doi: 10.7507/1007-9424.201907092 Copy

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