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Biodegradable DNA Nanoparticles that Provide Widespread Gene Delivery in the Brain
Author(s) -
Mastorakos Panagiotis,
Song Eric,
Zhang Clark,
Berry Sneha,
Park Hee Won,
Kim Young Eun,
Park Jong Sung,
Lee Seulki,
Suk Jung Soo,
Hanes Justin
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201502554
Subject(s) - gene delivery , transgene , genetic enhancement , nanotechnology , nanoparticle , materials science , biophysics , in vivo , dna , chemistry , gene , biology , biochemistry , microbiology and biotechnology
Successful gene therapy of neurological disorders is predicated on achieving widespread and uniform transgene expression throughout the affected disease area in the brain. However, conventional gene vectors preferentially travel through low‐resistance perivascular spaces and/or are confined to the administration site even with the aid of a pressure‐driven flow provided by convection‐enhanced delivery. Biodegradable DNA nanoparticles offer a safe gene delivery platform devoid of adverse effects associated with virus‐based or synthetic nonbiodegradable systems. Using a state‐of‐the‐art biodegradable polymer, poly(β‐amino ester), colloidally stable sub‐100 nm DNA nanoparticles are engineered with a nonadhesive polyethylene glycol corona that are able to avoid the adhesive and steric hindrances imposed by the extracellular matrix. Following convection enhanced delivery, these brain‐penetrating nanoparticles are able to homogeneously distribute throughout the rodent striatum and mediate widespread and high‐level transgene expression. These nanoparticles provide a biodegradable DNA nanoparticle platform enabling uniform transgene expression patterns in vivo and hold promise for the treatment of neurological diseases.