| | | 1,25羟化维生素D3对人高转移巨细胞肺癌PGCL3细胞侵袭、迁移和粘附能力的影响
| | 免费医学论文【摘要】 目的免费医学论文 探讨1,25羟化维生素D3(骨化三醇)对人高转移巨细胞肺癌PGCL3细胞粘附、侵袭和迁移能力的免费医学论文影响。方法 MTT法检测其对PGCL3细胞生长的影响;分别用粘附相关基底膜成分分析实验、重组基底膜侵袭实验、Transwell室趋化运动模型研究骨化三醇对PGCL3细胞的粘附、侵袭和运动能力的影响。结果 骨化三醇明显抑制PGCL3细胞的生长。骨化三醇作用PGCL3细胞24h的IC50值为0.158 μmol/L。骨化三醇0.025、0.05、0.075μmol/L 处理PGCL3细胞24h,对PGCL3细胞侵袭能力的抑制率分别为12.94%、27.33%、38.22%,对PGCL3细胞运动能力的抑制率分别为8.70%、29.83%、43.62%。降低PGCL3细胞对层粘连蛋白、纤维粘连蛋白的粘附率,且其效果呈一定的剂量依赖关系。结论 骨化三醇抑制人高转移巨细胞肺癌PGCL3细胞的粘附、侵袭和迁移能力;骨化三醇对PGCL3细胞粘附和侵袭的影响与其降低PGCL3细胞对层粘连蛋白、纤维粘连蛋白的粘附率有关。 【关键词】 1,25羟化维生素D3;粘附;侵袭;迁移;人高转移巨细胞肺癌PGCL3细胞 【Abstract】 Objective This study was designed to investigate the effects of 1,25-dihydroxyvitamin D3 on adhesion,invasion and migration of PGCL3 cells.Methods Cell grow inhibition was measured by MTT assay . The effects of 1,25(OH)2vit D3 on adhesion、invasion and migration of PGCL3 cells were determined using analysis of adhesion-related basement membrane components fibronectin and laminin,reconstituted basement membrane invasion assay,and Transwell model,respectively.Results 1,25(OH)2vit D3 displayed growth inhibitory activity against PGCL3 cells with IC50 values of 0.158 μmol/L for 24 hours of treatment. 0.025,0.05 and 0.075μmol/L of 1,25-dihydroxyvitamin D3 inhibited PGCL3 cells to invade the reconstituted basement membrane by 12.94%,27.33%,38.22%,and decreased the percentages of locomotion and migration of PGCL3 cells by 8.70%,29.83%,43.62%.In addition,1,25-dihydroxyvitamin D3 inhibited PGCL3 cells to adhere to the basement membrane components fibronectin and laminin.Conclusion 1,25-dihydroxyvitamin D3 can significantly inhibit the adhesion,invasion and migration of PGCL3 cells,and the suppression of adhesion of PGCL3 cells to fibronectin and laminin may be responsible for the inhibition of adhesion and invasion of PGCL3 cells. 【Key words】 1,25-dihydroxyvitamin D3;adhesion;invasion;migration;PGCL3 cells 侵袭和转移是不断改进性肿瘤最重要的恶性行为和治疗的主要障碍,是临床90%以上癌症患者的致死因素,因此,控制侵袭和转移成为恶性肿瘤患者预后的关键因素,研发具有抗肿瘤转移的新药有着十分重要的意义。 1,25羟化维生素D3(1,25-dihydroxyvitamin D3)又名骨化三醇,是维生素D(Vitamin D,VitD)在肝脏和肾脏羟化酶的作用下最终被转化为其活性形式。近几年来其对肿瘤细胞的影响备受关注。骨化三醇对体外培养的几乎所有类型的肿瘤细胞有抑制或促分化作用,并且能够抑制、杀死或预防体内多种肿瘤[1~5]。但其对肿瘤的作用机制尚未完全明确,最近的研究结果表明骨化三醇的抗肿瘤作用与其抑制
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