ZHUANG Yao-xue,LIU Dian-na,GAO Lei,et al.Effects of different ranges of cold ablation on Lewis lung cancer mouse Tregs cells[J]. Beijing Journal of Traditional Chinese Medicine,2023,42(03):275-280.
ZHUANG Yao-xue,LIU Dian-na,GAO Lei,et al.Effects of different ranges of cold ablation on Lewis lung cancer mouse Tregs cells[J]. Beijing Journal of Traditional Chinese Medicine,2023,42(03):275-280. DOI: 10.16025/j.1674-1307.2023.03.011.
Effects of different ranges of cold ablation on Lewis lung cancer mouse Tregs cells
Objective,2,To investigate the effects of cold ablation of different ranges on the Tregs cells of Lewis lung cancer mice.,Methods,2,The subcutaneous transplantation tumor model of C57BL/6 mice was developed using Lewis mouse lung adenocarcinoma cell lines. Five mice were randomly assigned to four groups,including control group, low-range cryoablation group, medium-range cryoablation group, and full-range cryoablation group. The cold ablation group was given cold ablation with different freezing ranges,the ablation area of the low-range group was 50%~60% of the tumor, the middle-range group was 60%~90%, and the full-range group was 100%, whereas the control group underwent sham surgery. Periperalblood, spleen, and tumor tissue were collected 14 days after surgery. The number of CD4,+,CD25,+,FoxP3,+ ,T cells in tumor tissue and spleen was determined using flow cytometry. Western blot was used to detect the expression of Foxp3 protein in tumor tissues, qRT-PCR to detect the expresssion of Foxp3 mRNA in tumor tissues. In addition, the expression of cytokines IL-2 and TGF-β in peripheral blood was detected using ELISA.,Results,2,Compared with the control group, the proportion of CD4,+,CD25,+,FoxP3,+, T cells in the spleen tissue of the middle-range of cold ablation group was decreased with difference of three cold ablation groups statistically significant(,P,<,0.05 ). Compared with the control group,the proportion of CD4,+,CD25,+,FoxP3,+,T cells in the whole range of cold ablation group was decreased with the difference of three cold ablation groups not statistically significant(,P,>,0.05 ). Compared with the control group,the expressions of Foxp3 protein and mRNA in cold ablation groups were lower(,P,<,0.05),and those in the middle and full range groups were lower than those in the low range group(,P,<,0. 05). There was no statistical difference between the middle range group and the full range group (,P,>,0.05). Compared with the control group,the level of IL-2 in peripheral blood of each cold ablation group was higher(,P,<,0.05),the middle range group and the full range group were higher than the low range group (,P,<,0.05), and the full range group was lower than the middle range group(,P,<,0.05). Compared with the control group, the level of TGF-β in the low range group, the middle range group and the full range group was lower(,P,<,0.05). The low range group and the full range group were higher than the middle range group (,P,<,0.05),and the full range group was higher than the low range group and the middle range group(,P,<,0.05).,Conclusion,2,In addition to directly causing mechanical damage to tumor tissue, cold ablation can also inhibit the growth of the residual tumor by inhibiting the expression of Tregs cells. The efficacy of cold ablation groups in the range of 60%~100% was superior to that of low range. The effect of cold ablation in the range of 60%~100% is better than that in the low range of 50%~60%.
关键词
肺癌冷消融叉头翼状螺旋转录因子白介素-2转化生长因子-β小鼠
Keywords
lung cancercold ablationFoxp3IL-2TGF-βmice
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Related Institution
The Second Clinical Medical College of Beijing University of Chinese Medicine
Department of Endocrinology, Dongfang Hospital, Beijing University of Chinese Medicine
Department of Spleen and Stomach Diseases, Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing Key Laboratory of TCM Diagnosis and Treatment of Functional Gastrointestinal Diseases
Institute of Clinical Basic Medicine of Traditional Chinese Medicine, China Academy of Chinese Medical Sciences
Guang'anmen Hospital, China Academy of Chinese Medical Sciences