title: Poly(epsilon-caprolactone)/poly(ethylene glycol)/poly(epsilon-caprolactone) nanoparticles: preparation, characterization, and application in doxorubicin delivery.
abstract: Biodegradable poly(epsilon-caprolactone)/poly(ethylene glycol) (PCL/PEG) copolymer nanoparticles showed potential application in drug delivery systems. In this article, monodisperse poly(epsilon-caprolactone)/poly(ethylene glycol)/poly(epsilon-caprolactone) (PCL/PEG/PCL, PCEC) nanoparticles, approximately 40 nm, were prepared by solvent extraction method using acetone as the organic solvent. These PCL/PEG/PCL nanoparticles did not induce hemolysis in vitro and did not show toxicity in vitro or in vivo. The prepared PCL/PEG/PCL nanoparticles were employed to load doxorubicin by a pH-induced self-assembly method. In vitro release study indicated that doxorubicin release from nanoparticles at pH 5.5 was faster than that at pH 7.0. The encapsulation of doxorubicin in PCL/PEG/PCL nanoparticles enhanced the cytotoxicity of doxorubicin on a C-26 cell line in vitro. Meanwhile, compared with free doxorubicin, doxorubicin in nanoparticles could more efficiently treat mice bearing subcutaneous C-26 tumors. The doxorubicin-loaded PCL/PEG/PCL nanoparticles might be a novel doxorubicin formulation for cancer therapy.
authors.affiliation: State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, 610041, PR China.
authors.forename: MaLing
authors.initials: M
authors.lastname: Gou
authors.forename: XiuLing
authors.initials: X
authors.lastname: Zheng
authors.forename: Ke
authors.initials: K
authors.lastname: Men
authors.forename: Juan
authors.initials: J
authors.lastname: Zhang
authors.forename: Lan
authors.initials: L
authors.lastname: Zheng
authors.forename: XiuHong
authors.initials: X
authors.lastname: Wang
authors.forename: Feng
authors.initials: F
authors.lastname: Luo
authors.forename: YinLan
authors.initials: Y
authors.lastname: Zhao
authors.forename: Xia
authors.initials: X
authors.lastname: Zhao
authors.forename: YuQuan
authors.initials: Y
authors.lastname: Wei
authors.forename: ZhiYong
authors.initials: Z
authors.lastname: Qian
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000737:chemistry* / Q000633:toxicity; D002460:Cell Line; D004317:Doxorubicin / Q000737:chemistry* / Q000633:toxicity; D004337:Drug Carriers; D005260:Female; D006801:Humans; D006863:Hydrogen-Ion Concentration; D051379:Mice; D008807:Mice, Inbred BALB C; D053758:Nanoparticles / Q000737:chemistry* / Q000633:toxicity; D009369:Neoplasms / Q000188:drug therapy; D011091:Polyesters / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D051381:Rats
chemical_list: D000903:Antibiotics, Antineoplastic; D004337:Drug Carriers; D011091:Polyesters; C016240:polycaprolactone; D011092:Polyethylene Glycols; D004317:Doxorubicin