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沉默 Piezo1机械敏感型离子通道对MC3T3-E1成骨细胞迁移的影响
Effect of knocking down Piezo1 mechanically sensitive protein on migration of MC3T3-E1 osteoblast cells

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文摘 目的研究 Piezo1机械敏感型离子蛋白在小鼠MC3T3-E1成骨细胞迁移中的作用。方法取第5~10代小鼠MC3T3-E1成骨细胞,分为Piezo1-小干扰 RNA(small interfering RNA,siRNA)转染组(A组)、阴性对照组(B组)和空白对照组(C组)。A、B组分别采用siRNA转染试剂将Piezo1-siRNA或阴性对照siRNA转染入小鼠MC3T3-E1成骨细胞,C组仅加入siRNA转染试剂,在倒置相差显微镜及荧光显微镜下观察细胞形态并计算转染效率。采用免疫荧光染色和Western blot检测各组Piezo1蛋白表达水平;采用Transwell细胞迁移实验和细胞划痕实验检测 Piezo1-siRNA转染后MC3T3-E1成骨细胞迁移能力的变化。结果转染48 h后,A组可见细胞体积较未转染细胞略有增大,细胞突变长增粗,但细胞集落有所减少,悬浮细胞较未转染增多,细胞碎片增多。荧光显微镜下可见 B组小鼠MC3T3-E1成骨细胞中出现绿色荧光,转染效率为68.56%±4.12%。免疫荧光染色及Western blot检测示,A组细胞内 Piezo1蛋白表达水平均显著低于B、C组,差异有统计学意义(P<0.05); B、C组间差异无统计学意义(P>0.05)。Transwell细胞迁移实验及细胞划痕实验检测示,A组每孔迁移细胞数及培养1~4 d的细胞划痕愈合率均明显低于B、C组,差异有统计学意义(P<0.05);B、C组间差异无统计学意义(P>0.05)。结论沉默 Piezo1基因能显著抑制小鼠MC3T3-E1成骨细胞的迁移能力。
其他语种文摘 Objective To discuss the effect of Piezo1 mechanically sensitive protein in migration process of mouse MC3T3-E1 osteoblast cells. Methods The 5th-10th generation mouse MC3T3-E1 osteoblasts were divided into Piezo1-small interfering RNA (siRNA) transfection group (group A), negative control group (group B), and blank control group (group C). Piezo1-siRNA or negative control siRNA was transfected into mouse MC3T3-E1 osteoblasts by siRNA transfection reagent, respectively; group C was only added with siRNA transfection reagent; and the cell morphology was observed under inverted phase contrast microscope and fluorescence microscope, and the transfection efficiency was calculated. The expression of Piezo1 protein was detected by immunofluorescence staining and Western blot. Transwell cell migration assay and cell scratch assay were used to detect the migration of MC3T3-E1 osteoblasts after Piezo1-siRNA transfection. Results After 48 hours of transfection, group A showed a slight increase in cell volume and mutant growth, but cell colonies decreased, suspension cells increased and cell fragments increased when compared with untransfected cells. Under fluorescence microscope, green fluorescence was observed in MC3T3-E1 osteoblasts of group B, and the transfection efficiency was 68.56%±4.12%. Immunofluorescence staining and Western blot results showed that the expression level of Piezo1 protein in group A was significantly lower than that in groups B and C (P<0.05); there was no significant difference between group B and group C (P>0.05). Transwell cell migration assay and cell scratch assay showed that the number of cells per hole and the scratch healing rate of cells cultured for 1-4 days in group A were significantly lower than those in groups B and C (P<0.05); there was no significant difference between group B and group C (P>0.05). Conclusion Piezo1 knocked down by siRNA can inhibit the migration ability of MC3T3-E1 osteoblast cells.
来源 中国修复重建外科杂志 ,2019,33(1):28-34 【核心库】
DOI 10.7507/1002-1892.201806121
关键词 Piezo1 ; 小干扰 RNA ; MC3T3-E1成骨细胞 ; 细胞迁移
地址

兰州大学第二医院骨科, 甘肃省骨与关节疾病重点实验室, 兰州, 730000

语种 中文
文献类型 研究性论文
ISSN 1002-1892
学科 医药、卫生;外科学
基金 国家自然科学基金资助项目 ;  甘肃省自然科学基金面上项目 ;  甘肃省青年科技研究基金 ;  兰州大学第二医院萃英科技创新计划
文献收藏号 CSCD:6414575

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引证文献 2

1 杨均政 内皮细胞中Piezo1对去势小鼠骨组织的影响 中华骨质疏松和骨矿盐疾病杂志,2021,14(3):276-281
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2 余轶凡 机械应力介导骨组织再生相关信号通路机制的研究进展 中华创伤骨科杂志,2022,24(10):916-920
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