title: Uptake Pathways of Guandinylated Disulfide Containing Polymers as Nonviral Gene Carrier Delivering DNA to Cells.
abstract: Polymers of guanidinylated disulfide containing poly(amido amine)s (Gua-SS-PAAs), have shown high transfection efficiency and low cytotoxicity. Previously, we synthesized two Gua-SS-PAA polymers, using guanidino containing monomers (i.e., arginine and agmatine, denoted as ARG and AGM, respectively) and N,N'-cystaminebisacrylamide (CBA). In this study, these two polymers, AGM-CBA and ARG-CBA were complexed with plasmid DNA, and their uptake pathway was investigated. Complexes distribution in MCF-7 cells, and changes on cell endosomes/lysosomes and membrane after the cells were exposed to complexes were tested. In addition, how the transfection efficiency changed with the cell cycle status as well as endocytosis inhibitors were studied. The polymers of AGM-CBA and ARG-CBA can avoid endosomal/lysosomal trap, therefore, greatly delivering plasmid DNA (pDNA) to the cell nucleoli. It is the guanidine groups in the polymers that enhanced complexes' permeation through cell membrane with slight membrane damage, and targeting to the nucleoli. J. Cell. Biochem. 118: 903-913, 2017. © 2016 Wiley Periodicals, Inc.
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Jinmin
authors.initials: J
authors.lastname: Zhang
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Jiankun
authors.initials: J
authors.lastname: Yu
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Jingzheng
authors.initials: J
authors.lastname: Jiang
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Chen
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Yanping
authors.initials: Y
authors.lastname: Sun
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Yang
authors.affiliation: Department of Basic Pharmaceutical Sciences, School of Pharmacy, Husson University, Bangor, Maine.
authors.forename: Tianzhi
authors.initials: T
authors.lastname: Yang
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Cuifang
authors.initials: C
authors.lastname: Cai
authors.affiliation: Department of Microbiology and Cell Biology, School of life Science and Biopharmaceutics, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Xiaoyun
authors.initials: X
authors.lastname: Zhao
authors.affiliation: School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
authors.forename: Pingtian
authors.initials: P
authors.lastname: Ding
mesh_terms: D021581:Active Transport, Cell Nucleus; D002453:Cell Cycle; D002466:Cell Nucleolus / Q000378:metabolism; D004247:DNA / Q000008:administration & dosage* / Q000235:genetics; D004220:Disulfides; D016503:Drug Delivery Systems; D004705:Endocytosis; D018014:Gene Transfer Techniques; D019791:Guanidine; D006801:Humans; D061986:MCF-7 Cells; D057786:Peptidomimetics / Q000138:chemical synthesis / Q000737:chemistry / Q000493:pharmacokinetics; D010957:Plasmids / Q000008:administration & dosage / Q000235:genetics; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry / Q000493:pharmacokinetics; D014162:Transfection / Q000379:methods*
chemical_list: D004220:Disulfides; D057786:Peptidomimetics; D011108:Polymers; D004247:DNA; D019791:Guanidine
keywords: CELLULAR UPTAKE; Gua-SS-PAAs; LYSOSOMAL TRAP; NUCLEOLUS LOCALIZATION; TRANSFECTION EFFICIENCY