title: New strategy of photodynamic treatment of TiO2 nanofibers combined with celastrol for HepG2 proliferation in vitro.
abstract: As one of the best biocompatible semiconductor nanomaterials, TiO(2) nanofibers can act as a good photosensitizer material and show potential application in the field of drug carriers and photodynamic therapy to cure diseases. Celastrol, one of the active components extracted from T. wilfordii Hook F., was widely used in traditional Chinese medicine for many diseases. In this study, the cytotoxicity of celastrol for HepG2 cancer cells was firstly explored. The results showed that celastrol could inhibit cancer cell proliferation in a time-dependent and dose-dependent manner, inducing apoptosis and cell cycle arrest at G2/M phase in HepG2 cells. After the TiO(2) nanofibers were introduced into the system of celastrol, the cooperation effect showed that the nanocomposites between TiO(2) nanofibers and celastrol could enhance the cytotoxicity of celastrol for HepG2 cells and cut down the drug consumption so as to reduce the side-effect of the related drug. Associated with the photodynamic effect, it is evident that TiO(2) nanofibers could readily facilitate the potential application of the active compounds from natural products like celastrol. Turning to the advantages of nanotechnology, the combination of nanomaterials with the related monomer active compounds of promising Chinese medicine could play an important role to explore the relevant mechanism of the drug cellular interaction and promote the potential application of TiO(2) nanofibers in the clinical treatment.
authors.affiliation: State Key Lab of Bioelectronics (Chien-Shiung WU Laboratory), Southeast University, Nanjing, 210096, PR China.
authors.forename: Jingyuan
authors.initials: J
authors.lastname: Li
authors.forename: Xuemei
authors.initials: X
authors.lastname: Wang
authors.forename: Hui
authors.initials: H
authors.lastname: Jiang
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Lu
authors.forename: Yudan
authors.initials: Y
authors.lastname: Zhu
authors.forename: Baoan
authors.initials: B
authors.lastname: Chen
mesh_terms: D000970:Antineoplastic Agents / Q000493:pharmacokinetics / Q000494:pharmacology; D017209:Apoptosis / Q000187:drug effects; D059447:Cell Cycle Checkpoints / Q000187:drug effects; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects*; D004337:Drug Carriers; D004357:Drug Synergism; D005434:Flow Cytometry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008853:Microscopy; D053761:Nanocomposites; D057139:Nanofibers / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure; D053978:Pentacyclic Triterpenes; D010778:Photochemotherapy; D017319:Photosensitizing Agents / Q000737:chemistry / Q000494:pharmacology* / Q000528:radiation effects; D014025:Titanium / Q000737:chemistry / Q000494:pharmacology* / Q000528:radiation effects; D014315:Triterpenes / Q000493:pharmacokinetics / Q000494:pharmacology*
chemical_list: D000970:Antineoplastic Agents; D004337:Drug Carriers; D053978:Pentacyclic Triterpenes; D017319:Photosensitizing Agents; D014315:Triterpenes; C009495:titanium dioxide; D014025:Titanium; C050414:celastrol