目的探讨维生素C(Vitamin C,Vit C)在TNF-α及血清剥夺诱导人椎间盘髓核细胞凋亡中的作用及机制。方法取脊柱矫形手术患者的髓核组织,消化法获得正常髓核细胞,取第3代细胞按不同处理因素分为Vit C作用组(A组)、TNF-α诱导组(B组)和血清剥夺组(C组),每组再分为以下亚组:A组分为A1组(基础培养液)、A2组(100μg/m L Vit C)、A3组(200μg/m L Vit C);B组分为B0组(对照组)、B1组(100 ng/m L TNF-α)、B2组(100μg/m L Vit C+100 ng/m L TNF-α)、B3组(200μg/m L Vit C+100 ng/m L TNF-α);C组分为C0组(对照组)、C1组(FBS浓度由8%降低为2%)、C2组(2%FBS+100μg/m L Vit C)、C3组(2%FBS+200μg/m L Vit C)。各组作用24 h后,采用流式细胞术检测各组膜联蛋白V、碘化丙啶双染后髓核细胞凋亡率;实时荧光定量PCR检测p53(基因编码相对分子质量为53×103的蛋白质)、脂肪酸合成酶(fatty acid synthase,FAS)、...
【英文摘要】
Objective To explore the effect of Vitamin C(Vit C) on the apoptosis of human nucleus pulposus(NP) cells induced by tumor necrosis factor α(TNF-α) and serum deprivation. Methods The NP cells were isolated from patients undergoing spine corrective operation by collagenase trypsin. The experiment was divided into 3 groups: Vit C group(group A), TNF-α group(group B), and serum deprivation group(group C). Group A was reassigned to A1 subgroup(basic medium), A2 subgroup(100 μg/m L Vit C), and A3 subgroup(200 μg/...