Evaluation of multi-target and single-target liposomal drugs for the treatment of gastric cancer.
We studied the effects of multi- and single-target liposomal drugs on human gastric cancer cell AGS both in vitro and in vivo. The cytotoxic effect of dihydrotanshinone I was significantly enhanced by treatment with octreotide-polyethylene glycol(PEG)-liposome, Arg-Gly-Asp(RGD)-PEG-liposome, and RGD/octreotide-PEG-liposome encapsulated with 0.5 mug/ml of dihydrotanshinone I to AGS cell for 24 h, compared to control. Furthermore, the AGS cell survival rate for multi-target versus single target liposomal drugs was significantly suppressed. Microscopic examination revealed that significant cell death occurred in the multi- and single-target liposomal encapsulated drug groups. Significant suppression of tumor growth in AGS cell xenograft nude mice given octreotide-PEG-liposome, RGD/octreotide-PEG-liposome encapsulated drug, versus those given a free drug was noted after 13 d of experimentation with the multi-targeted liposome: up to 60.75% and 41.2% reduction of tumor volume as compared to dimethylsulfoxide (DMSO) control and the free drug groups respectively. The treated animals showed no gross signs of toxicity. The results have potential clinical application.
School of Medical Laboratory Science and Biotechnology, Taipei Medical University, Taiwan.
Chien-Ho
CH
Chen
Der-Zen
DZ
Liu
Hsu-Wei
HW
Fang
Hong-Jen
HJ
Liang
Tzu-Sheng
TS
Yang
Shyr-Yi
SY
Lin
D000818:Animals; D000970:Antineoplastic Agents / Q000494:pharmacology / Q000627:therapeutic use*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D013196:Dihydrotestosterone / Q000494:pharmacology / Q000627:therapeutic use*; D006801:Humans; D008081:Liposomes; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D013274:Stomach Neoplasms / Q000188:drug therapy* / Q000473:pathology; D023041:Xenograft Model Antitumor Assays
D000970:Antineoplastic Agents; D008081:Liposomes; D013196:Dihydrotestosterone