title: Neutralizing antibody evasion ability of adenovirus vector induced by the bioconjugation of methoxypolyethylene glycol succinimidyl propionate (MPEG-SPA).
abstract: Although adenovirus vectors (Ad) which possesses high transduction efficiency are widely used for gene therapy in animal models, clinical use is very limited. One of the main reason is that nearly 80% of human beings possess anti-Ad antibodies. In this study, we tried to modify Ad with methoxypolyethylene glycol (MPEG) activated by succinimidyl propionate, and, the neutralizing antibody evasion ability of PEGylated Ad was evaluated. The results demonstrated that PEG-Ad showed stronger protection ability against anti-Ad neutralizing antibody compared to that with unmodified-Ad. Considering there are many people carrying neutralizing antibody against Ad and readministration of Ad was necessary for treating chronic diseases, this strategy, which was also applicable to other vectors, can be used for developing improved vectors.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Eto
authors.forename: Jian-Qing
authors.initials: JQ
authors.lastname: Gao
authors.forename: Fumiko
authors.initials: F
authors.lastname: Sekiguchi
authors.forename: Shinnosuke
authors.initials: S
authors.lastname: Kurachi
authors.forename: Kazufumi
authors.initials: K
authors.lastname: Katayama
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Mizuguchi
authors.forename: Takao
authors.initials: T
authors.lastname: Hayakawa
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Tsutsumi
authors.forename: Tadanori
authors.initials: T
authors.lastname: Mayumi
authors.forename: Shinsaku
authors.initials: S
authors.lastname: Nakagawa
mesh_terms: D000260:Adenoviruses, Human / Q000235:genetics / Q000276:immunology*; D000818:Animals; D000914:Antibodies, Viral / Q000235:genetics / Q000494:pharmacology*; D005260:Female; D005822:Genetic Vectors / Q000276:immunology*; D006801:Humans; D051379:Mice; D008813:Mice, Inbred ICR; D011092:Polyethylene Glycols / Q000008:administration & dosage* / Q000737:chemistry; D011422:Propionates / Q000008:administration & dosage* / Q000737:chemistry; D013388:Succinimides / Q000008:administration & dosage* / Q000737:chemistry
chemical_list: D000914:Antibodies, Viral; D011422:Propionates; D013388:Succinimides; D011092:Polyethylene Glycols; C028210:monomethoxypolyethylene glycol