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In relation to this article, we declare that there is no conflict of interest.
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Received May 19, 2022
Accepted September 15, 2022
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Synthesis and characterization of oligo aminoglycosides and polyethylenimine conjugates as polymeric gene carriers

Department of Biochemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Korea 1Department of Mechanical Engineering, University of Delaware, Newark, Delaware, United States, 19716, USA
joonsig@cnu.ac.kr
Korean Journal of Chemical Engineering, February 2023, 40(2), 325-336(12), 10.1007/s11814-022-1296-8
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Abstract

In this study, a new kind of antibiotic drug-polymer conjugate, the kanamycin-methyl acrylate-polyethylenimine (KMP) polymer, was synthesized and characterized as gene carrier. Previous reports have shown that the modification of low molecular weight polyethylenimine (LMW-PEI) improves the transfection efficiency and decreases the toxicity. Kanamycin can be hydrolyzed under an acidic environment owing to the glycosidic bond. In this physicochemical study, the properties of the kanamycin-based hybrid polymers conjugated with various LMW-PEIs, such as 0.6, 1.2, and 2 kDa polyethylenimine (PEI), were investigated by 1H NMR, FT-IR, and their buffering capacity was assayed by acid-base titration method. Gel electrophoresis and picogreen assay were performed to evaluate the ability to bind with plasmid DNA. The polyplexes were nanosized with a net positive charge. The cytotoxicity and transfection efficiency were evaluated using human cervical carcinoma (HeLa) cells. KMPs exhibited lower toxicity than PEI 25 kDa, and higher transfection efficiency compared to the native LMW-PEIs.

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