Using inositol as a biocompatible ligand for efficient transgene expression

Using inositol as a biocompatible ligand for efficient transgene expression

Lei Zhang,1 Susan L Bellis,2 Yiwen Fan,3 Yunkun Wu1 1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, People’s Republic of China; 2Cell, Developmental and Integrative Biology, University of Alabama...

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Autores principales: Zhang L, Bellis SL, Fan YW, Wu YK
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2015
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Medicine (General)
R5-920
Acceso en línea:https://doaj.org/article/f093c9fc5be84c7cb971851eb582d481
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spelling oai:doaj.org-article:f093c9fc5be84c7cb971851eb582d4812021-12-02T07:28:30ZUsing inositol as a biocompatible ligand for efficient transgene expression1178-2013https://doaj.org/article/f093c9fc5be84c7cb971851eb582d4812015-04-01T00:00:00Zhttp://www.dovepress.com/using-inositol-as-a-biocompatible-ligand-fornbspefficient-transgene-ex-peer-reviewed-article-IJNhttps://doaj.org/toc/1178-2013 Lei Zhang,1 Susan L Bellis,2 Yiwen Fan,3 Yunkun Wu1 1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, People’s Republic of China; 2Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA; 3Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People’s Republic of China Abstract: Transgene transfection techniques using cationic polymers such as polyethylenimines (PEIs) and PEI derivatives as gene vectors have shown efficacy, although they also have shortcomings. PEIs have decent DNA-binding capability and good cell internalization performance, but they cannot deliver gene payloads very efficiently to cell nuclei. In this study, three hyperbranched polyglycerol-polyethylenimine (PG6-PEI) polymers conjugated with myo-inositol (INO) molecules were developed. The three resulting PG6-PEI-INO polymers have an increased number of INO ligands per molecule. PG6-PEI-INO 1 had only 14 carboxymethyl INO (CMINO) units per molecule. PG6-PEI-INO 2 had approximately 130 CMINO units per molecule. PG6-PEI-INO 3 had as high as 415 CMINO units approximately. Mixing PG6-PEI-INO polymers with DNA produced compact nanocomposites. We then performed localization studies using fluorescent microscopy. As the number of conjugated inositol ligands increased in PG6-PEI-INO polymers, there was a corresponding increase in accumulation of the polymers within 293T cell nuclei. Transfection performed with spherical 293T cells yielded 82% of EGFP-positive cells when using PG6-PEI-INO 3 as the vehicle. Studies further revealed that extracellular adenosine triphosphate (eATP) can inhibit the transgene efficiency of PG6-PEI-INO polymers, as compared with PEI and PG6-PEI that were not conjugated with inositol. Our work unveiled the possibility of using inositol as an effective ligand for transgene expression. Keywords: myo-inositol, nuclear localization, biocompatibility, polyglycerol-polyethylenimine, hyperbranched polymers, extracellular ATPZhang LBellis SLFan YWWu YKDove Medical PressarticleMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol 2015, Iss default, Pp 2871-2884 (2015)
institution DOAJ
collection DOAJ
language EN
topic Medicine (General)
R5-920
spellingShingle Medicine (General)
R5-920
Zhang L
Bellis SL
Fan YW
Wu YK
Using inositol as a biocompatible ligand for efficient transgene expression
description Lei Zhang,1 Susan L Bellis,2 Yiwen Fan,3 Yunkun Wu1 1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, People’s Republic of China; 2Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL, USA; 3Key Laboratory of Biomedical Polymers of Ministry of Education, Department of Chemistry, Wuhan University, Wuhan, People’s Republic of China Abstract: Transgene transfection techniques using cationic polymers such as polyethylenimines (PEIs) and PEI derivatives as gene vectors have shown efficacy, although they also have shortcomings. PEIs have decent DNA-binding capability and good cell internalization performance, but they cannot deliver gene payloads very efficiently to cell nuclei. In this study, three hyperbranched polyglycerol-polyethylenimine (PG6-PEI) polymers conjugated with myo-inositol (INO) molecules were developed. The three resulting PG6-PEI-INO polymers have an increased number of INO ligands per molecule. PG6-PEI-INO 1 had only 14 carboxymethyl INO (CMINO) units per molecule. PG6-PEI-INO 2 had approximately 130 CMINO units per molecule. PG6-PEI-INO 3 had as high as 415 CMINO units approximately. Mixing PG6-PEI-INO polymers with DNA produced compact nanocomposites. We then performed localization studies using fluorescent microscopy. As the number of conjugated inositol ligands increased in PG6-PEI-INO polymers, there was a corresponding increase in accumulation of the polymers within 293T cell nuclei. Transfection performed with spherical 293T cells yielded 82% of EGFP-positive cells when using PG6-PEI-INO 3 as the vehicle. Studies further revealed that extracellular adenosine triphosphate (eATP) can inhibit the transgene efficiency of PG6-PEI-INO polymers, as compared with PEI and PG6-PEI that were not conjugated with inositol. Our work unveiled the possibility of using inositol as an effective ligand for transgene expression. Keywords: myo-inositol, nuclear localization, biocompatibility, polyglycerol-polyethylenimine, hyperbranched polymers, extracellular ATP
format article
author Zhang L
Bellis SL
Fan YW
Wu YK
author_facet Zhang L
Bellis SL
Fan YW
Wu YK
author_sort Zhang L
title Using inositol as a biocompatible ligand for efficient transgene expression
title_short Using inositol as a biocompatible ligand for efficient transgene expression
title_full Using inositol as a biocompatible ligand for efficient transgene expression
title_fullStr Using inositol as a biocompatible ligand for efficient transgene expression
title_full_unstemmed Using inositol as a biocompatible ligand for efficient transgene expression
title_sort using inositol as a biocompatible ligand for efficient transgene expression
publisher Dove Medical Press
publishDate 2015
url https://doaj.org/article/f093c9fc5be84c7cb971851eb582d481
work_keys_str_mv AT zhangl usinginositolasabiocompatibleligandfornbspefficienttransgeneexpression
AT bellissl usinginositolasabiocompatibleligandfornbspefficienttransgeneexpression
AT fanyw usinginositolasabiocompatibleligandfornbspefficienttransgeneexpression
AT wuyk usinginositolasabiocompatibleligandfornbspefficienttransgeneexpression
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