Preparation of folate-targeted anti-miR- 221 anionic liposome and its in vitro anti-hepatocellular carcinoma effect / 中国药房

ABSTRACT

OBJECTIVE To prep are folate-targeted miR- 221 antisense oligonucleotide （anti-miR-221）delivery system ，and to preliminarily evaluate its in vitro anti-cancer effect on hepatocellular carcinoma. METHODS Folate-targeted anti-miR- 221 liposomes（FRL）were prepared by thin-film dispersion method ；the particle size ，Zeta potential and encapsulation efficiency were determined. The delivery efficiency of folate-targeted anionic liposome in human hepatoma HepG 2 cells was determined by in vitro cellular uptake experiment using calcein as the model drug. Flow cytometry was used to detect the effects of FRL on the apoptosis and cell cycle of HepG 2 cells. RESULTS The particle size of prepared FRL was （172.70±3.76）nm，Zeta potential was （－1.16± 0.15）mV and encapsulation efficiency was （83.53±1.85）％. In vitro cellular uptake experiments showed that folate-targeted anionic liposome successfully delivered calcein to HepG 2 cells，and the delivery efficiency in targeted group was higher than that of non-targeted liposome group （P＜0.01）. Apoptosis experiment results showed that the apoptotic rate of HepG 2 cells treated with FRL was significantly higher than that of non-targeted liposome （P＜0.01）. In cell cycle experiment ，FRL could shorten the S phase fraction of HepG 2 cells and induced arrest in the G 0/G1 and G 2/M phases. CONCLUSIONS FRL can encapsulate anti-miR-221 well and deliver it to hepatocellular carcinoma HepG 2 cells successfully ，and has a good in vitro anti-hepatoma effect in inducing apoptosis and cell cycle regulation.