中文摘要：

目的 P-选凝素糖蛋白配体1(P-selectin glycoprotein ligand 1,PSGL-1)主要特异性表达在白细胞上,我们的研究PSGL-1缺失在小鼠体内脾脏、骨髓中MDSCs的变化。方法利用我们实验室现有的PSGL-1-/-小鼠进行试验,经过鉴定后,PSGL-1-/-后代小鼠;利用流式细胞术检测C57和PSGL-1-/-小鼠脾脏、骨髓中Gr-1和CD11b阳性细胞的变化。结果与对照组C57小鼠相比,PSGL-1-/-基因工程小鼠MDSCs在脾脏、骨髓中显著上调(P<0.001),结论 PSGL-1的缺失导致小鼠脾脏、骨髓中MDSCs升高。

英文摘要：

Objective PSGL-1 is specifically expressed in leucocytes.The aim of this study was to explore the changes of myeloid-derived suppressor cells (MDSCs) in the spleen and bone marrow in PSGL-1-deficient mice.Methods PSGL-1 -/-mice were used in the experiment.After identification of the offsprings, flow cytometry was used to test the expression of CD11b and Gr-1 in C57 and PSGL-1 -/-mice.Results Compared with the C57 mice, the expression of MDSCs was up-regulated in the PSGL-1-deficient mice ( P <0.001).Conclusion The expression of MDSCs is upregulated in PSGl-1-deficient mice.