title: 10-Hydroxycamptothecin loaded nanoparticles: preparation and antitumor activity in mice.
abstract: 10-Hydroxycamptothecin (HCPT) loaded nanoparticles made from poly(caprolactone-co-lactide)-b-PEG-b-poly(caprolactone-co-lactide) (PCLLA-PEG-PCLLA) block copolymer, were prepared by a novel two-step nanoprecipitation method using an interior-chemistry strategy. The satisfactory drug loading content (>13%) as well as high encapsulation efficiency (>85%) was achieved. Cytotoxicity test indicated that the HCPT-loaded nanoparticles had enhanced in vitro cytotoxicity compared to free drug. Progressively, in vivo antitumor activity and HCPT biodistribution in sarcoma-180 (S-180) bearing mice after intravenous injection of the HCPT-loaded nanoparticles show that HCPT-loaded nanoparticles exhibited superior in vivo antitumor effect and remarkably different biodistribution than the commercially available HCPT injection.
authors.affiliation: Laboratory of Mesoscopic Chemistry and Department of Polymer Science and Engineering, College of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, PR China.
authors.forename: Leyang
authors.initials: L
authors.lastname: Zhang
authors.forename: Mi
authors.initials: M
authors.lastname: Yang
authors.forename: Qin
authors.initials: Q
authors.lastname: Wang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Li
authors.forename: Rui
authors.initials: R
authors.lastname: Guo
authors.forename: Xiqun
authors.initials: X
authors.lastname: Jiang
authors.forename: Changzheng
authors.initials: C
authors.lastname: Yang
authors.forename: Baorui
authors.initials: B
authors.lastname: Liu
mesh_terms: D000818:Animals; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000138:chemical synthesis*; D002166:Camptothecin / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D045744:Cell Line, Tumor; D006801:Humans; D051379:Mice; D008813:Mice, Inbred ICR; D053758:Nanoparticles / Q000008:administration & dosage / Q000737:chemistry*; D009369:Neoplasms / Q000188:drug therapy / Q000378:metabolism; D023041:Xenograft Model Antitumor Assays / Q000379:methods
chemical_list: D000972:Antineoplastic Agents, Phytogenic; C028098:10-hydroxycamptothecin; D002166:Camptothecin