目的 探索日本血吸虫感染过程中糖酵解途径对小鼠调节性T(Treg)细胞数量和功能的影响.方法 建立日本血吸虫感染小鼠模型,用糖酵解抑制剂2-Deoxy-D-glucose(2DG)或PBS对日本血吸虫感染小鼠进行6次腹腔注射后,分离脾脏细胞和肠系膜淋巴结,采用流式细胞术(FCM)检测分离得到的细胞中Glut1+CD4+T细胞以及Treg细胞比例.结果 未感染组小鼠脾脏(43.58%±2.50% vs.21.15%±0.96%;t=8.834,P<0.01)和肠系膜淋巴结中Glut1+CD4+T细胞比例(38.97%±1.97% vs.28.40%±2.11%;t=3.662,P<0.05)均显著高于感染日本血吸虫8周小鼠,但未感染组小鼠脾脏(6.83%±0.21% vs.13.30%±0.35%;t=15.65,P<0.01)和肠系膜淋巴结中Treg细胞比例(8.26%±0.15% vs.14.37%±0.44%;t=13.14,P<0.01)均显著低于感染组小鼠.感染小鼠给与2DG腹腔注射后,脾脏(15.50%± 0.76% vs.13.07%±0.15%;t=3.130,P<0.05)和肠系膜淋巴结中Treg细胞比例(17.00%±0.41% vs.13.83%±0.18%;t=6.947,P<0.01)显著高于给与PBS注射小鼠.结论 糖酵解途径抑制了日本血吸虫感染小鼠Treg细胞分化.
Objective To assess the influence of glycolytic pathway on the proportion and numbers of regulatory T cells dur-ing Schistosoma japonicum infection. Methods A S. japonicum-infected mouse model was established,and C57/BL6 male mice infected with S.japonicum were subjected to intraperitoneal injections of with the glycolytic inhibitor 2-Deoxy-D-glucose (2DG)or PBS for 6 times,and then the cells from spleen or mesenteric lymph nodes(LNs)were isolated and analyzed by flow cytometry(FCM)to detect the percentage of Glut1+CD4+T cells and Treg cells. Results The proportions of Glut1+CD4+T cells in the spleen(43.58%±2.50% vs.21.15%±0.96%;t=8.834,P<0.01)and mesenteric LNs(38.97%±1.97% vs.28.40%± 2.11%;t=3.662,P<0.05)were higher in the normal mice than those in the infected mice,and the percentages of Treg cells in the spleen(6.83% ± 0.21% vs. 13.30% ± 0.35%;t = 15.65,P < 0.01)and LNs(8.26% ± 0.15% vs. 14.37% ± 0.44%;t =13.14,P<0.01)were lower in the normal mice than those in the infected mice.In addition,the proportions of Treg cells in the spleen(15.50%±0.76% vs.13.07%±0.15%;t=3.130,P<0.05)and LNs(17.00% ± 0.41% vs.13.83% ± 0.18%;t=6.947, P<0.01)were higher in the infected mice injected intraperitoneally with 2DG than those in the infected mice injected intraperi-toneally with PBS. Conclusion Glycolytic pathway inhibits Treg differentiation in the spleen and mesenteric LNs of S.japoni-cum-infected mice.