title: Co-delivery of doxorubicin and plasmid by a novel FGFR-mediated cationic liposome.
abstract: In our previous study, we developed a novel cationic liposome, which was modified with truncated human basic fibroblast growth factor (tbFGF) peptide. This tbFGF-mediated cationic liposome could deliver chemotherapeutic agents or gene specifically to FGFRs on tumors and obtained higher transfection efficiency than plain cationic liposomes. In order to investigate whether this novel cationic liposome could achieve a synergistic/combined anti-tumor effect as a co-delivery system, we simultaneously delivered doxorubicin (DOX) and the plasmid encoding the phosphorylation-defective mouse survivin threonine 34-->alanine mutant (Msurvivin T34A plasmid) to the same cells through this cationic liposome. As a result, an enhanced antiproliferative activity in vitro has been achieved by delivering DOX and DNA simultaneously to the Lewis lung carcinoma cells (LLC) using this liposome. The concentration of DOX in the co-delivery system which caused 50% killing was nearly 3-fold lower than that of the free DOX. Furthermore, the co-delivery system suppressed tumor growth more efficiently than either DOX or the Msurvivin T34A plasmid alone in the Lewis lung carcinoma-bearing C57BL/6 mice. After 18 days of treatment with the co-delivery system, the average tumor volume in mice was decreased by 80%, which was higher than liposomal DOX (70%, P<0.05) and Msurvivin T34A plasmid (41%, P<0.01). The co-delivery system also caused 15 days delay of tumor growth, which was longer than the other treatment groups. In conclusion, this novel cationic liposome is an efficient vector to simultaneously deliver drugs and DNA to the same cells in vitro and in vivo.
authors.affiliation: State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, China.
authors.forename: Wenjing
authors.initials: W
authors.lastname: Xiao
authors.forename: Xiang
authors.initials: X
authors.lastname: Chen
authors.forename: Li
authors.initials: L
authors.lastname: Yang
authors.forename: Yongqiu
authors.initials: Y
authors.lastname: Mao
authors.forename: Yuquan
authors.initials: Y
authors.lastname: Wei
authors.forename: Lijuan
authors.initials: L
authors.lastname: Chen
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000008:administration & dosage* / Q000737:chemistry; D017209:Apoptosis / Q000187:drug effects; D018827:Carcinoma, Lewis Lung / Q000235:genetics / Q000378:metabolism / Q000473:pathology / Q000628:therapy*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D002626:Chemistry, Pharmaceutical; D004305:Dose-Response Relationship, Drug; D004317:Doxorubicin / Q000008:administration & dosage* / Q000737:chemistry; D004339:Drug Compounding; D016222:Fibroblast Growth Factor 2 / Q000235:genetics / Q000378:metabolism*; D018014:Gene Transfer Techniques; D015316:Genetic Therapy / Q000379:methods*; D006801:Humans; D051034:Inhibitor of Apoptosis Proteins / Q000235:genetics / Q000378:metabolism*; D020128:Inhibitory Concentration 50; D008081:Liposomes; D051379:Mice; D008810:Mice, Inbred C57BL; D009154:Mutation; D010957:Plasmids; D017468:Receptors, Fibroblast Growth Factor / Q000378:metabolism*; D012097:Repressor Proteins / Q000235:genetics / Q000378:metabolism*; D000077022:Survivin; D013997:Time Factors; D014162:Transfection; D047368:Tumor Burden / Q000187:drug effects
chemical_list: D000903:Antibiotics, Antineoplastic; C117749:Birc5 protein, mouse; D051034:Inhibitor of Apoptosis Proteins; D008081:Liposomes; D017468:Receptors, Fibroblast Growth Factor; D012097:Repressor Proteins; D000077022:Survivin; D016222:Fibroblast Growth Factor 2; D004317:Doxorubicin