Preparation of cleavable PEG and RGD co-modified liposomes in vitro and evaluate its properties / 中国生化药物杂志

ABSTRACT

Objective To prepare the cleavable PEG and RGD co-modified liposome for tumor targeting.Methods Liposomes were prepared by film-ultrasonic method.The particle size,Zeta potential and stability in FBS were evaluated.Cellular uptake by HepG2 cell was explored.MTT assay was used to evaluate the cytotoxicity of blank liposomes. Results The particle diameter of C/RGD-LP was (104.8 ±5.5 )nm with the Zeta potential of (-4.45 ±1.75 )mV.The cellular uptake of C/RGD-LP increased 2.8 times after Cys was added.The C/RGD-LP showed little cytotoxicity to HepG2 cell.Conclusion Cleavable PEG and RGD co-modified liposomes were easy to prepare and has a special application value for targeting tumor.