Cytoplasmic Reactive Cationic Amphiphiles for Efficient Intracellular Delivery and Self-Reporting Smart Release

Cytoplasmic Reactive Cationic Amphiphiles for Efficient Intracellular Delivery and Self-Reporting Smart Release
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用于高效细胞内递送和自我报告智能释放的细胞质反应性阳离子两亲物

DOI:
10.1021/acs.macromol.5b01110
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发表时间:
2015-08
期刊:
影响因子:
5.5
通讯作者:
Shiyong Liu
Shiyong Liu
中科院分区:
化学1区
文献类型:
--
作者:
Yongqiang Yu;Yanyan Jiang;Guoying Zhang;Shiyong Liu

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在释放具有转录活性的质粒DNA之前,非病毒基因传递载体需要克服细胞外和细胞内的障碍。然而,阳离子聚合物/pDNA复合物所需的血清和运输稳定性与最终的质粒释放要求相矛盾;阳离子聚合物载体的链长度在细胞毒性和转染效率之间做出了额外的妥协。虽然引入刺激触发的可降解阳离子聚合物可以部分解决这些问题,但寻求新的设计标准和阐明基本的细胞运输途径是非常可取的。在这里,我们报告了一种超分子方法,通过细胞内环境反应性阳离子两亲体的自组装来构建荧光基因传递载体。这种新型胶束纳米载体由于胶束冠上的多价阳离子片段,可以有效地与pDNA结合形成多聚物。在细胞摄取和内体逃逸后,疏水性胶束…
Nonviral gene delivery vectors need to overcome both extracellular and intracellular obstacles before releasing plasmid DNA in the transcriptionally active form. However, serum and transport stability desired for cationic polymer/pDNA polyplexes contradicts with the eventual plasmid release requirement; chain lengths of cationic polymer vectors render additional compromise between cytotoxicity and transfection efficiency. Although the introduction of stimuli-triggered degradable cationic polymers can partially solve these issues, the quest for novel design criteria and elucidation of elementary cellular transport pathways are highly desirable. Herein we report a supramolecular approach to construct fluorogenic gene delivery vectors via self-assembly of intracellular milieu-reactive cationic amphiphiles. This new type of micellar nanocarriers can effectively bind pDNA to form polyplexes due to multivalent cationic segments at micellar coronas. Upon cellular uptake and endosomal escape, hydrophobic micellar...
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