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Zinc(ii)-cyclen coordinative amphiphiles for enhanced gene delivery.
Zhang, Yi-Mei; Zhang, Ji; Liu, Yan-Hong; Guo, Yu; Yu, Xiao-Qi; Huang, Zheng.
Afiliación
  • Zhang YM; National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators As Innovative Medicine, College of Pharmacy & International Academy of Targeted Therapeutics and Innovation, Chongqing University of Arts and Sciences Cho
  • Zhang J; Key Laboratory of Green Chemistry & Technology (Ministry of Education), College of Chemistry, Sichuan University Chengdu 610064 China jzhang@scu.edu.cn xqyu@scu.edu.cn +86-28-8541-5886.
  • Liu YH; Key Laboratory of Green Chemistry & Technology (Ministry of Education), College of Chemistry, Sichuan University Chengdu 610064 China jzhang@scu.edu.cn xqyu@scu.edu.cn +86-28-8541-5886.
  • Guo Y; Key Laboratory of Green Chemistry & Technology (Ministry of Education), College of Chemistry, Sichuan University Chengdu 610064 China jzhang@scu.edu.cn xqyu@scu.edu.cn +86-28-8541-5886.
  • Yu XQ; Key Laboratory of Green Chemistry & Technology (Ministry of Education), College of Chemistry, Sichuan University Chengdu 610064 China jzhang@scu.edu.cn xqyu@scu.edu.cn +86-28-8541-5886.
  • Huang Z; National & Local Joint Engineering Research Center of Targeted and Innovative Therapeutics, Chongqing Key Laboratory of Kinase Modulators As Innovative Medicine, College of Pharmacy & International Academy of Targeted Therapeutics and Innovation, Chongqing University of Arts and Sciences Cho
RSC Adv ; 10(65): 39842-39853, 2020 Oct 27.
Article en En | MEDLINE | ID: mdl-35515358
In this study, we developed coordinative amphiphiles for use as novel non-viral DNA vectors. As a modification of a conventional cationic lipid structure, we replaced the cationic head with a zinc(ii)-1,4,7,10-tetraazacyclododecane (Zn-cyclen) complex as a phosphate-directing group, and used biocompatible skeletons (α-tocopherol or cholesterol) as hydrophobic tails. The structure-activity relationship (SAR) was systematically investigated to study the effect of Zn-coordination on the gene transfection between cyclen-based traditional head-tail lipids and Zn(ii)-cyclen coordinative amphiphiles. The results reveal that both Zn-free lipids and Zn-containing amphiphiles could condense DNA into nano-sized particles with appropriate size and zeta-potentials. Agarose gel retardation assay and MTS-based cell viability assays demonstrated that the Zn(ii)-cyclen complex exhibited slightly lower DNA binding ability and much lower cytotoxicity compared to liposome analogues, respectively. Most importantly, in vitro transfection studies showed that the coordination of zinc(ii) to cyclen may dramatically increase the transfection efficiency of the conventional cationic lipid, and α-tocopherol-containing coordinative amphiphile Zn-Cyc-Toc gives the best transfection efficiency, which was enhanced 24.4 times after coordination and was 6.1 times higher than commercial transfection reagent lipofectamine 2000. Mechanism studies confirmed that the DNA complex formed from Zn-Cyc-Toc might induce higher cellular uptake and better endosomal escape ability than the lipoplexes formed from Zn-free lipid Cyc-Toc. This study not only demonstrates that these coordinative amphiphiles might be promising non-viral gene vectors, but also presents a novel strategy to enhance the gene transfection efficiency and biocompatibility of cyclen-based cationic lipids.

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: RSC Adv Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido