Biodegradable DNA Nanoparticles that Provide Widespread Gene Delivery in the Brain. Issue 5 (17th December 2015)

• Record Type: Journal Article
• Authors: Mastorakos, Panagiotis; Song, Eric; Zhang, Clark; Berry, Sneha; Park, Hee Won; Kim, Young Eun; Park, Jong Sung; Lee, Seulki; Suk, Jung Soo; Hanes, Justin
• Is Part Of: Small. Volume 12:Issue 5(2016)
• Page Start: 678
• Page End: 685
• Publication Date: 2015-12-17
• Subjects: brain gene therapy -- convection‐enhanced delivery -- extracellular matrices -- nonviral gene delivery -- poly(β‐amino esters); Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201502554
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract : 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. Abstract : Nonviral brain penetrating gene vectors derived from a biodegradable polymer, poly(β‐amino ester), achieve improved distribution throughout the brain when administered intracranially using convection enhanced delivery. This leads to high and widespread transgene expression, thereby serving as a promising platform for delivery of therapeutic genes for treatment of neurological diseases.