碱性成纤维细胞生长因子和血管内皮生长因子对人牙周膜干细胞体外增殖、迁移和黏附的影响

被引:9
作者
张戎
张勉
李成华
王鹏程
陈芳
王勤涛
机构
[1] 第四军医大学口腔医学院牙周科
关键词
碱性成纤维细胞生长因子2; 血管内皮生长因子类; 牙周再生; 牙周膜干细胞;
D O I
暂无
中图分类号
R78 [口腔科学];
学科分类号
100302 [口腔临床医学];
摘要
目的研究碱性成纤维细胞生长因子(basic fibroblast growth factor,FGF-2)和血管内皮生长因子(vascular endothelial growth factor,VEGF)对体外培养的人牙周膜干细胞(periodontal ligamentstem cells,PDLSC)增殖、迁移和黏附能力的影响,探讨两种生长因子促牙周再生的相关机制。方法体外培养人PDLSC,分为A组:2%胎牛血清+α-最低必需培养基(α-minimum essential medium,α-MEM)(对照1组);B组:20μg/L FGF-2+A组;C组:10μg/L VEGF+A组;D组:20μg/L FGF-2+10μg/L VEGF+A组;E组:10%胎牛血清+α-MEM(对照2组);F组:20μg/L FGF-2+E组;G组:10μg/L VEGF+E组;H组:20μg/L FGF-2+10μg/L VEGF+E组,按分组要求施加刺激,第1、3、5、7天用可溶性噻唑盐法观察两种生长因子在不同体积分数的胎牛血清中对PDLSC增殖能力的影响;根据增殖实验结果重新分组:对照组:10%胎牛血清+α-MEM;FGF-2组:20μg/L FGF-2+对照组;VEGF组:10μg/L VEGF+对照组;FGF-2+VEGF组:20μg/L FGF-2+10μg/L VEGF+对照组,流式细胞仪、细胞黏附实验、划痕损伤愈合迁移实验观察细胞周期、迁移、黏附能力的变化。结果在2%胎牛血清中,FGF-2和VEGF促增殖效果均不明显;在10%胎牛血清中,刺激第3、5、7天FGF-2组A值(分别为1.22±0.17、2.15±0.19、2.72±0.11)均显著高于对照组(分别为0.76±0.16、1.25±0.06、1.64±0.09)(P<0.01),但第5、7天A值均显著低于FGF-2+VEGF组(分别为2.46±0.17、3.18±0.27)(P<0.05),第5、7天VEGF组A值(分别为1.66±0.05、2.13±0.13)显著高于对照组,但显著低于FGF-2组(P<0.05);流式细胞仪结果示VEGF组增殖指数[(34.3±2.0)%]显著低于FGF-2[(46.8±3.2)%]和FGF-2+VEGF组[(45.0±4.0)%],但显著高于对照组[(14.5±1.7)%](P<0.01)。细胞迁移实验结果示FGF-2组与对照组迁移至创伤区的细胞数比值差异无统计学意义(P>0.05);细胞黏附实验结果示FGF-2组黏附细胞数比值(79±4)显著高于VEGF组(62±4)(P<0.05)。光镜下观察示FGF-2组细胞在材料表面形态好于未加FGF-2组。结论 FGF-2和VEGF均可呈时间依赖性促进PDLSC增殖,二者联合应用有一定协同作用;FGF-2促PDLSC黏附能力较VEGF强;VEGF可促进细胞向创伤部位迁移。
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