脂蟾毒配基PLGA-TPGS纳米粒的体外细胞摄取及毒性研究
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篇名: 脂蟾毒配基PLGA-TPGS纳米粒的体外细胞摄取及毒性研究
TITLE:
摘要: 目的:研究脂蟾毒配基(RBG)乳酸羟基乙酸共聚物-水溶性维生素E(PLGA-TPGS)纳米粒(RPTN)体外被人肝癌HepG2细胞、小鼠腹水型高淋巴道转移肿瘤HCa-F细胞的摄取情况和对HepG2细胞的毒性。方法:制备包载RBG和荧光标记物香豆素6的PLGA-TPGS纳米粒(RCPTN),荧光倒置显微镜观察HepG2、HCa-F细胞对RCPTN的体外摄取情况。将试验分为阴性对照组、空白PLGA-TPGS纳米粒(EPTN)组、5-氟尿嘧啶溶液(FS)组、RBG溶液(RS)组、RBG/PLGA纳米粒(RPN)组、RPTN组,采用水溶性四氮唑(WST-1)法考察不同终质量浓度(1.25、2.5、5、10、20 μg/mL)的FS、RS、RPN和RPTN作用24、48、72 h后HepG2细胞在450 nm波长下的光密度,计算细胞存活率(CV)和半数抑制浓度(IC50)。 结果:RCPTN分布在HepG2、HCa-F细胞的细胞核周围。RPN组和RPTN组细胞的CV随RBG浓度增加而减小,随作用时间延长而减小;与FS组比较,RPTN组细胞的CV均减小(P<0.05或P<0.01)。FS、RS、RPN和RPTN作用于HepG2细胞的IC50随时间的延长而减小,且IC50的大小依次为RS> FS>RPN>RPTN;RPN和RPTN作用48、72 h的IC50明显小于FS与RS(P<0.05或P<0.01)。结论:RPTN 可将RBG带入HepG2、HCa-F细胞内部,其对HepG2细胞具有抑制作用,且作用强于RPN、RS和FS。
ABSTRACT: OBJECTIVE: To study the in vitro uptake of Resibufogenin (RBG) lactic acid glycolic acid copolymer-water soluble vitamin E (PLGA-TPGS) in human liver cancer HepG2 cells, mouse ascites-type lymphatic metastasis of tumor HCa-F cells, and the toxicity on HepG2 cells. METHODS: RCPTN loading RBG and coumarin-6 (C6) were prepared. Fluorescent inverted microscope was used to observe the in vitro uptake by RCPTN HepG2, HCa-F cells. It was divided into negative control group, blank PLGA-TPGS nanoparticles (EPTN) group, 5-fluorouracil solution (FS) group, RBG solution (RS) group, RBG/PLGA nanoparticles (RPN) group and RPTN group. WST-1 was conducted to investigate the optical density at 450 nm wavelength of HepG2 cells after 24, 48, 72 h incubated by FS, RS, RPN and RPTN with different final concentrations (1.25, 2.5, 5, 10, 20 μg/mL); the cell viability (CV) and half inhibitory concentration (IC50) were calculated. RESULTS: RCPTN distributed around the nucleus of HepG2, HCa-F cells. CV was decreased by RBG concentration increased in RPN group and RPTN group, and decreased by time prolonged; compared with FS group, CV in RPTN group was decreased (P<0.05 or P<0.01). IC50 of HepG2 cells incubated by FS, RS, RPN and RPTN was decreased by time prolonged, ordered by RS>FS>RPN>RPTN; IC50 incubated by RPN and RPTN for 48, 72 h was obviously less than that of FS and RS (P<0.05 or P<0.01). CONCLUSIONS: RPTN can deliver RBG into HepG2, HCa-F cells, showing inhibition effect on HepG2 cells which is stronger than RPN, RS and FS.
期刊: 2017年第28卷第16期
作者: 徐红,高萌,褚秋辰,董浩,陈雨,徐荣谦,张成鸿,田燕
AUTHORS: XU Hong,GAO Meng,CHU Qiuchen,DONG Hao,CHEN Yu,XU Rongqian,ZHANG Chenghong,TIAN Yan
关键字: 脂蟾毒配基;乳酸羟基乙酸共聚物-水溶性维生素E;纳米粒;肝癌HepG2细胞;腹水型高淋巴道转移肿瘤HCa-F细胞;细胞摄取;体外细胞毒性
KEYWORDS: Resibufogenin; Lactic acid glycolic acid copolymer-water soluble vitamin E; Nanoparticles; Liver cancer HepG2 cells; Ascites-type lymphatic metastasis of tumor HCa-F cells; Cell uptake; in vitro cytotoxicity
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