title: Single-phased luminescent mesoporous nanoparticles for simultaneous cell imaging and anticancer drug delivery.
abstract: Multifunctional materials for biological use have mostly been designed with composite or hybrid nanostructures in which two or more components are incorporated. The present work reports on a multifunctional biomaterial based on single-phased luminescent mesoporous lanthanide oxide nanoparticles that combine simultaneous drug delivery and cell imaging. A simple strategy based on solid-state-chemistry thermal decomposition process was employed to fabricate the spherical mesoporous Gd(2)O(3):Eu nanoparticles with homogeneous size distribution. The porous nanoparticles developed by this strategy possess well-defined mesopores, large pore size and volume, and high specific surface area. The mesoporous features of nanoparticles impart the material with capabilities of loading and releasing the drug with a relatively high loading efficiency and a sustained release behavior of drugs. The DOX-loaded porous Gd(2)O(3) nanoparticles are able to kill the cancer cells efficiently upon incubation with the human cervical carcinoma (HeLa) cells, indicating the potential for treatment of cancer cells. Meanwhile, the intrinsic luminescence of Gd(2)O(3):Eu nanoparticles gives the function of optical imaging. Therefore, the drug release activity and effect of drugs on the cells can be effectively monitored via luminescence of nanoparticles themselves, realizing multifunctionality of simultaneous cell imaging and anticancer drug delivery in a single-phased nanoparticle.
authors: State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, PR China. weihdi@yahoo.com.cn
authors: Weihua
authors: W
authors: Di
authors: Xinguang
authors: X
authors: Ren
authors: Haifeng
authors: H
authors: Zhao
authors: Naoto
authors: N
authors: Shirahata
authors: Yoshio
authors: Y
authors: Sakka
authors: Weiping
authors: W
authors: Qin
mesh_terms: D000903:Antibiotics, Antineoplastic / Q000737:chemistry* / Q000627:therapeutic use; D001672:Biocompatible Materials / Q000737:chemistry; D004317:Doxorubicin / Q000737:chemistry* / Q000627:therapeutic use; D004337:Drug Carriers / Q000737:chemistry*; D016503:Drug Delivery Systems / Q000379:methods*; D005063:Europium / Q000737:chemistry; D005682:Gadolinium / Q000737:chemistry; D006367:HeLa Cells; D006801:Humans; D049449:Luminescence; D008422:Materials Testing; D018613:Microscopy, Confocal / Q000379:methods*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D016062:Porosity
chemical_list: D000903:Antibiotics, Antineoplastic; D001672:Biocompatible Materials; D004337:Drug Carriers; D005063:Europium; C030581:gadolinium oxide; D004317:Doxorubicin; D005682:Gadolinium