title: Preclinical and clinical studies of anticancer  agent-incorporating polymer micelles.
abstract: The size of anticancer agent-incorporating micelles can be controlled within the diameter range of 20-100 nm to ensure that they do not penetrate normal vessel walls. With this development, it is expected that the incidence of drug-induced side-effects may be decreased owing to the reduced drug distribution in normal tissue. Micelle systems can also evade non-specific capture by the reticuloendothelial system because the outer shell of a micelle is covered with polyethylene glycol. Consequently, a polymer micelle carrier can be delivered selectively to a tumor by utilizing the enhanced permeability and retention effect. Moreover, a water-insoluble drug can be incorporated into polymer micelles. Presently, several anticancer agent-incorporating micelle carrier systems are under preclinical and clinical evaluation. Furthermore, nucleic acid-incorporating micelle carrier systems are also being developed.
authors.affiliation: Investigative Treatment Division, Research Center for Innovative Oncology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa 277-8577, Japan. yhmatsum@east.ncc.go.jp
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Matsumura
authors.forename: Kazunori
authors.initials: K
authors.lastname: Kataoka
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000008:administration & dosage / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000008:administration & dosage* / Q000494:pharmacology; D000972:Antineoplastic Agents, Phytogenic / Q000008:administration & dosage / Q000494:pharmacology; D002986:Clinical Trials as Topic; D004317:Doxorubicin / Q000008:administration & dosage / Q000494:pharmacology; D004337:Drug Carriers / Q000737:chemistry; D016503:Drug Delivery Systems; D004353:Drug Evaluation, Preclinical; D006801:Humans; D008823:Micelles; D053758:Nanoparticles / Q000737:chemistry; D017239:Paclitaxel / Q000008:administration & dosage / Q000031:analogs & derivatives / Q000494:pharmacology; D010316:Particle Size; D011092:Polyethylene Glycols / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D009353:Zinostatin / Q000008:administration & dosage / Q000494:pharmacology
chemical_list: D000903:Antibiotics, Antineoplastic; D000970:Antineoplastic Agents; D000972:Antineoplastic Agents, Phytogenic; D004337:Drug Carriers; D008823:Micelles; C500671:NK105; D011108:Polymers; D011092:Polyethylene Glycols; D004317:Doxorubicin; D009353:Zinostatin; D017239:Paclitaxel