Aliphatic Quaternary Ammonium Functionalized Nanogels for Gene Delivery

Gene therapy is a promising treatment for hereditary diseases, as well as acquired genetic diseases, including cancer. Facing the complicated physiological and pathological environment in vivo, developing efficient non-viral gene vectors is needed for their clinical application. Here, poly(<i>...

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Autores principales: Huaiying Zhang, Damla Keskin, Willy H. de Haan-Visser, Guangyue Zu, Patrick van Rijn, Inge S. Zuhorn
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:d7ab6458ceae48b59d21b301d3a768ab2021-11-25T18:42:26ZAliphatic Quaternary Ammonium Functionalized Nanogels for Gene Delivery10.3390/pharmaceutics131119641999-4923https://doaj.org/article/d7ab6458ceae48b59d21b301d3a768ab2021-11-01T00:00:00Zhttps://www.mdpi.com/1999-4923/13/11/1964https://doaj.org/toc/1999-4923Gene therapy is a promising treatment for hereditary diseases, as well as acquired genetic diseases, including cancer. Facing the complicated physiological and pathological environment in vivo, developing efficient non-viral gene vectors is needed for their clinical application. Here, poly(<i>N</i>-isopropylacrylamide) (p(NIPAM)) nanogels are presented with either protonatable tertiary amine groups or permanently charged quaternized ammonium groups to achieve DNA complexation ability. In addition, a quaternary ammonium-functionalized nanogel was further provided with an aliphatic moiety using 1-bromododecane to add a membrane-interacting structure to ultimately facilitate intracellular release of the genetic material. The ability of the tertiary amine-, quaternized ammonium-, and aliphatic quaternized ammonium-functionalized p(NIPAM) nanogels (i.e., NGs, NGs-MI, and NGs-BDD, respectively) to mediate gene transfection was evaluated by fluorescence microscopy and flow cytometry. It is observed that NGs-BDD/pDNA complexes exhibit efficient gene loading, gene protection ability, and intracellular uptake similar to that of NGs-MI/pDNA complexes. However, only the NGs-BDD/pDNA complexes show a notable gene transfer efficiency, which can be ascribed to their ability to mediate DNA escape from endosomes. We conclude that NGs-BDD displays a cationic lipid-like behavior that facilitates endosomal escape by perturbing the endosomal/lysosomal membrane. These findings demonstrate that the presence of aliphatic chains within the nanogel is instrumental in accomplishing gene delivery, which provides a rationale for the further development of nanogel-based gene delivery systems.Huaiying ZhangDamla KeskinWilly H. de Haan-VisserGuangyue ZuPatrick van RijnInge S. ZuhornMDPI AGarticlenanogelsgene deliveryendosomal escapequaternizationaliphatic chainsPharmacy and materia medicaRS1-441ENPharmaceutics, Vol 13, Iss 1964, p 1964 (2021)
institution DOAJ
collection DOAJ
language EN
topic nanogels
gene delivery
endosomal escape
quaternization
aliphatic chains
Pharmacy and materia medica
RS1-441
spellingShingle nanogels
gene delivery
endosomal escape
quaternization
aliphatic chains
Pharmacy and materia medica
RS1-441
Huaiying Zhang
Damla Keskin
Willy H. de Haan-Visser
Guangyue Zu
Patrick van Rijn
Inge S. Zuhorn
Aliphatic Quaternary Ammonium Functionalized Nanogels for Gene Delivery
description Gene therapy is a promising treatment for hereditary diseases, as well as acquired genetic diseases, including cancer. Facing the complicated physiological and pathological environment in vivo, developing efficient non-viral gene vectors is needed for their clinical application. Here, poly(<i>N</i>-isopropylacrylamide) (p(NIPAM)) nanogels are presented with either protonatable tertiary amine groups or permanently charged quaternized ammonium groups to achieve DNA complexation ability. In addition, a quaternary ammonium-functionalized nanogel was further provided with an aliphatic moiety using 1-bromododecane to add a membrane-interacting structure to ultimately facilitate intracellular release of the genetic material. The ability of the tertiary amine-, quaternized ammonium-, and aliphatic quaternized ammonium-functionalized p(NIPAM) nanogels (i.e., NGs, NGs-MI, and NGs-BDD, respectively) to mediate gene transfection was evaluated by fluorescence microscopy and flow cytometry. It is observed that NGs-BDD/pDNA complexes exhibit efficient gene loading, gene protection ability, and intracellular uptake similar to that of NGs-MI/pDNA complexes. However, only the NGs-BDD/pDNA complexes show a notable gene transfer efficiency, which can be ascribed to their ability to mediate DNA escape from endosomes. We conclude that NGs-BDD displays a cationic lipid-like behavior that facilitates endosomal escape by perturbing the endosomal/lysosomal membrane. These findings demonstrate that the presence of aliphatic chains within the nanogel is instrumental in accomplishing gene delivery, which provides a rationale for the further development of nanogel-based gene delivery systems.
format article
author Huaiying Zhang
Damla Keskin
Willy H. de Haan-Visser
Guangyue Zu
Patrick van Rijn
Inge S. Zuhorn
author_facet Huaiying Zhang
Damla Keskin
Willy H. de Haan-Visser
Guangyue Zu
Patrick van Rijn
Inge S. Zuhorn
author_sort Huaiying Zhang
title Aliphatic Quaternary Ammonium Functionalized Nanogels for Gene Delivery
title_short Aliphatic Quaternary Ammonium Functionalized Nanogels for Gene Delivery
title_full Aliphatic Quaternary Ammonium Functionalized Nanogels for Gene Delivery
title_fullStr Aliphatic Quaternary Ammonium Functionalized Nanogels for Gene Delivery
title_full_unstemmed Aliphatic Quaternary Ammonium Functionalized Nanogels for Gene Delivery
title_sort aliphatic quaternary ammonium functionalized nanogels for gene delivery
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/d7ab6458ceae48b59d21b301d3a768ab
work_keys_str_mv AT huaiyingzhang aliphaticquaternaryammoniumfunctionalizednanogelsforgenedelivery
AT damlakeskin aliphaticquaternaryammoniumfunctionalizednanogelsforgenedelivery
AT willyhdehaanvisser aliphaticquaternaryammoniumfunctionalizednanogelsforgenedelivery
AT guangyuezu aliphaticquaternaryammoniumfunctionalizednanogelsforgenedelivery
AT patrickvanrijn aliphaticquaternaryammoniumfunctionalizednanogelsforgenedelivery
AT ingeszuhorn aliphaticquaternaryammoniumfunctionalizednanogelsforgenedelivery
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