title: Nuclear-targeted drug delivery of TAT peptide-conjugated monodisperse mesoporous silica nanoparticles.
abstract: Most present nanodrug delivery systems have been developed to target cancer cells but rarely nuclei. However, nuclear-targeted drug delivery is expected to kill cancer cells more directly and efficiently. In this work, TAT peptide has been employed to conjugate onto mesoporous silica nanoparticles (MSNs-TAT) with high payload for nuclear-targeted drug delivery for the first time. Monodispersed MSNs-TAT of varied particle sizes have been synthesized to investigate the effects of particle size and TAT conjugation on the nuclear membrane penetrability of MSNs. MSNs-TAT with a diameter of 50 nm or smaller can efficiently target the nucleus and deliver the active anticancer drug doxorubicin (DOX) into the targeted nucleus, killing these cancer cells with much enhanced efficiencies. This study may provide an effective strategy for the design and development of cell-nuclear-targeted drug delivery.
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-Xi Road, Shanghai 200050, China.
authors.forename: Limin
authors.initials: L
authors.lastname: Pan
authors.forename: Qianjun
authors.initials: Q
authors.lastname: He
authors.forename: Jianan
authors.initials: J
authors.lastname: Liu
authors.forename: Yu
authors.initials: Y
authors.lastname: Chen
authors.forename: Ming
authors.initials: M
authors.lastname: Ma
authors.forename: Linlin
authors.initials: L
authors.lastname: Zhang
authors.forename: Jianlin
authors.initials: J
authors.lastname: Shi
mesh_terms: D002467:Cell Nucleus / Q000378:metabolism*; D004317:Doxorubicin / Q000737:chemistry / Q000378:metabolism; D006367:HeLa Cells; D006801:Humans; D058726:Nanoconjugates / Q000737:chemistry*; D010316:Particle Size; D010446:Peptide Fragments / Q000737:chemistry*; D016062:Porosity; D012822:Silicon Dioxide / Q000737:chemistry*; D054322:tat Gene Products, Human Immunodeficiency Virus / Q000737:chemistry*
chemical_list: D058726:Nanoconjugates; D010446:Peptide Fragments; D054322:tat Gene Products, Human Immunodeficiency Virus; D012822:Silicon Dioxide; D004317:Doxorubicin