title: Anti-tumor and anti-metastatic effects of gelatin-doxorubicin and PEGylated gelatin-doxorubicin nanoparticles in SCC7 bearing mice.
abstract: The goal of this study was to develop a systemically non-toxic and stable circulation based passive targeting system for efficient anticancer treatment. Gelatin-doxorubicin (GD) and PEGylated gelatin-doxorubicin (PGD) nanoparticles were designed and their feasibilities as an anti-cancer drug were evaluated. The sizes of GD and PGD nanoparticles were about 135 and 250 nm, respectively, and they retained their structures for 2 days in PBS. Both GD and PGD had much lower cytotoxicity in vitro and in vivo than doxorubicin (DOX) at equivalent concentrations. However, PGD significantly inhibited tumor growth compared to the control and DOX treated group, and GD moderately suppressed tumor growth compared with the control but the suppressing effect of GD did not exceed that of DOX. And GD and PGD both remarkably suppressed pulmonary metastasis. We conclude that PGD is a potential cancer therapeutic, due to its excellent anti-tumor and anti-metastatic effects and low systemic toxicity.
authors.affiliation: Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju 500-712, South Korea.
authors.forename: Gee Young
authors.initials: GY
authors.lastname: Lee
authors.forename: Kyeongsoon
authors.initials: K
authors.lastname: Park
authors.forename: Jong Hee
authors.initials: JH
authors.lastname: Nam
authors.forename: Sang Yoon
authors.initials: SY
authors.lastname: Kim
authors.forename: Youngro
authors.initials: Y
authors.lastname: Byun
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000008:administration & dosage / Q000494:pharmacology*; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000494:pharmacology* / Q000633:toxicity; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D004317:Doxorubicin / Q000008:administration & dosage / Q000494:pharmacology*; D005079:Excipients; D005780:Gelatin; D008175:Lung Neoplasms / Q000517:prevention & control / Q000556:secondary; D008297:Male; D051379:Mice; D008809:Mice, Inbred C3H; D053758:Nanoparticles; D009362:Neoplasm Metastasis / Q000473:pathology / Q000517:prevention & control*; D011092:Polyethylene Glycols / Q000737:chemistry*
chemical_list: D000596:Amino Acids; D000903:Antibiotics, Antineoplastic; D000970:Antineoplastic Agents; D005079:Excipients; D011092:Polyethylene Glycols; D004317:Doxorubicin; D005780:Gelatin