Chitosan conjugates for DNA delivery

Literature Information

Publication Date 2013-06-13
DOI 10.1039/C3CP51215K
Impact Factor 3.676
Authors

Diana Paiva, Galya Ivanova, Maria do Carmo Pereira, Sandra Rocha


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Abstract

Graft copolymers of chitosan and maltodextrin were synthesized by reductive amination of a low molecular weight chitosan. The degree of substitution is 70% or above, as quantified by nuclear magnetic resonance spectroscopy, at molar ratios of chitosan glucosamine units and maltodextrin of 1 : 1 and 1 : 5. The high substitution degree generates a water-soluble compound at pH 7.4 by reducing the amino groups of chitosan. In addition, the copolymer self-assembles into spherical nanoparticles with diameters of about 300 nm. The mass polymer/DNA ratios at the isoelectric point are within the range of 3–3.5 for chitosan–maltodextrin nanoparticles as determined by electrophoretic mobility measurements. These results confirm that DNA interacts efficiently with the copolymer nanoparticles indicating a potential application of the system for DNA delivery.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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