• Department of Gastrointestinal Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, P. R. China;
XIA Dong, Email: juliahhy@aliyun.com
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Objectives  To investigate contents and clinical significances of CD19+IL-10+ B cell and its subsets in peripheral blood monouclear cell (PBMC) and cancer tissue of patient with colorectal cancer (CRC). Methods  Thirty-eight patients with CRC underwent surgery from November 2017 to November 2018 in this hospital were enrolled as a trail group. The proportions of CD19+IL-10+ B cell, CD19+IL-10+CD24hiCD38hi B cell, CD19+IL-10+CD24intCD38int B cell, and CD19+IL-10+CD24hiCD38 B cell in the CD19+ B cells in the PBMC, cancer tissue and paracancer tissue of these patients were detected by the flow cytometry. Thirty-seven healthy volunteers were selected as a control group and the same cell types same as the trail group were detected by the same method in the PBMC only. Results  ① The contents of CD19+IL-10+ B cell and CD19+IL-10+CD24hiCD38hi B cell of the PBMC in the trail group were significantly higher than those in the control group (t=9.09, P<0.01; t=9.36, P<0.01, respectively), which of the cancer tissues in the trail group were significantly higher than those in the corresponding paracancer tissues (t=11.67, P<0.01; t=19.64, P<0.01, respectively), while the content of CD19+IL-10+CD24hiCD38 B cell of the PBMC in the trail group was significantly lower than that in the control group (t=6.15, P<0.01). But the CD19+IL-10+CD24intCD38int B cell had no significant difference of the PBMC between these two groups (t=1.78, P=0.08). ② The contents of CD19+IL-10+ B cell and CD19+IL-10+CD24hiCD38hi B cell of the PBMC in the CRC patients with stage Ⅲ+Ⅳ were significantly higher than those in the CRC patients with stage Ⅰ+Ⅱ (t=5.39, P<0.01; t=3.13, P<0.01, respectively). The others all had no significant differences (P>0.05). Conclusion  CD19+IL-10+ B cells are significantly increased in PBMC and cancer tissue of patient with CRC and with advanced CRC (TNM stage Ⅲ+Ⅳ), further more, main increasing subgroup of CD19+IL-10+ B cell is CD19+IL-10+CD24hiCD38hi B cell, which indicates that CD19+IL-10+ B cell and CD19+IL-10+CD24hiCD38hi B cell might participate in tumorigenesis and tumor progress of CRC.

Citation: XU Jie, CHEN Xiaolong, HU Xinyu, ZUO Zonglin, CHEN Peng, FENG Libo, ZOU Qingwei, XIA Dong. Differences of CD19+IL-10+ B cell and its subsets contents in peripheral blood and cancer tissues of patients with colorectal cancer and its clinical significances. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2019, 26(7): 808-813. doi: 10.7507/1007-9424.201903070 Copy

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