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模拟微重力下柚皮苷对T细胞共育的成骨细胞增殖分化的影响
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| 篇名： | 模拟微重力下柚皮苷对T细胞共育的成骨细胞增殖分化的影响 |
| TITLE： | Effects of naringin on the proliferation and differentiation of osteoblasts co -cultured with T cells under simulated microgravity |
| 摘要： | 目的 在模拟微重力情况下，探索柚皮苷作用于T细胞-成骨细胞共育体系后，对成骨细胞增殖分化的影响。方法本实验设正常重力对照组、正常重力柚皮苷组、模拟微重力对照组、模拟微重力柚皮苷组，其中对照组分别在正常重力或模拟微重力条件下将T细胞与成骨细胞共育，柚皮苷组分别在对照组基础上加入1×10－5mol/L柚皮苷溶液。显微镜下观察成骨细胞形态学，CCK-8法检测成骨细胞增殖率，碱性磷酸酶（ALP）试剂盒检测ALP活性，实时荧光定量聚合酶链式反应检测Runt相关转录因子2（Runx2）、白细胞介素6（IL-6）mRNA相对表达水平，Westernblot法检测Runx2和IL-6蛋白相对表达水平。结果与正常重力对照组比较，模拟微重力对照组成骨细胞密度降低，仅有少量聚集，细胞形态以圆形居多；与模拟微重力对照组比较，模拟微重力柚皮苷组成骨细胞成梭形或多角形，形态饱满，成鱼群状聚集。与正常重力对照组比较，正常重力柚皮苷组成骨细胞增殖率、ALP活性、Runx2mRNA和蛋白相对表达水平显著升高，IL-6mRNA和蛋白相对表达水平显著降低（P＜0.05）；模拟微重力对照组成骨细胞增殖率、ALP活性、Runx2mRNA和蛋白相对表达水平显著降低，IL-6mRNA和蛋白相对表达水平显著升高（P＜0.05）。与模拟微重力对照组比较，模拟微重力柚皮苷组成骨细胞增殖率、ALP活性、Runx2mRNA和蛋白相对表达水平显著升高，IL-6mRNA和蛋白相对表达水平显著降低（P＜0.05）。结论在T细胞-成骨细胞共育体系中，模拟微重力可以抑制成骨细胞的增殖分化能力；该条件下柚皮苷可以改善成骨细胞的增殖分化能力，其作用机制与IL-6水平的降低及Runx2水平的升高有关。 |
| ABSTRACT： | OBJECTIVE To explore the effects of naringin on the proliferation and differentiation of osteoblasts in T cell - osteoblast co -culture system under simulated microgravity . METHODS This experiment was setting normal gravity control group ， normal gravity naringin group ，simulated microgravity control group and simulated microgravity naringin group .In the control group，T cells were co -cultured with osteoblasts under normal gravity or simulated microgravity conditions . In the naringin group ， 1×10－5 mol/L naringin solution was added additionally on the basis of control group .The morphology of osteoblasts was observed under the microscope . The proliferation rate of osteoblasts was detected by CCK -8 method. The alkaline phosphatase （ALP）activity was detected by ALP kit . mRNA relative expressions of Runt related transcription factor 2（Runx2）and interleukin -6（IL-6）were detected by real -time fluorescence quantitative polymerase chain reaction . The relative expression of Runx 2 and IL -6 protein were detected by Western blot . RESULTS Compared with normal gravity control group ，the density of osteoblasts in the simulated microgravity control group decreased ，only a small number of cells were aggregated ，and the cell morphology was mostly round ； compared with the simulated microgravity control group ，the osteoblasts in the simulated microgravity naringin group formed spindle or polygonal ，plump in shape ，and clustered in groups of fish . Compared with normal gravity control group ，the proliferation rate of osteoblasts ，ALP activity ，relative expressions of Runx 2 mRNA and protein in the normal gravity naringin group were significantly increased ，while the relative expressions of IL -6 mRNA and protein were significantly decreased （P＜ 0.05）；the proliferation rate of osteoblasts ，ALP activity ，relative expressions of Runx 2 mRNA and protein in the simulated microgravity control group were significantly decreased ，while relative expressions of IL -6 mRNA and protein were significantly increased（P＜0.05）. Compared with the simulated microgravity control group ，the proliferation rate of osteoblasts ，ALP activity ， relative expressions of Runx 2 mRNA and protein in the simulated microgravity naringin group were significantly increased ，while relative expressions of IL -6 mRNA and protein were significantly decreased （P＜0.05）. CONCLUSIONS In the T cell -osteoblast co-culture system ，simulated microgravity can inhibit the proliferation and differentiation of osteoblasts ；naringin can improve the proliferation and differentiation ability of osteoblasts under this condition， and its mechanism of action is related to the decrease of IL -6 level and the increase of Runx 2 level. |
| 期刊： | 2022年第33卷第19期 |
| 作者： | 陈建兴，尹文哲，孙奇峰，周森，张亚龙，王翌 |
| AUTHORS： | |
| 关键字： | 柚皮苷；成骨细胞；模拟微重力；增殖分化；T细胞 |
| KEYWORDS： | naringin；osteoblasts；simulated microgravity ； |
| 阅读数： | 143 次 |
| 本月下载数： | 2 次 |
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