Simultaneous Gene Delivery and Tracking through Preparation of Photo-Luminescent Nanoparticles Based on Graphene Quantum Dots and Chimeric Peptides.

Simultaneous Gene Delivery and Tracking through Preparation of Photo-Luminescent Nanoparticles Based on Graphene Quantum Dots and Chimeric Peptides.
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通过基于石墨烯量子点和嵌合肽的光亮发光纳米颗粒的制备,同时进行基因传递和跟踪。

DOI:
10.1038/s41598-017-09890-y
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发表时间:
2017-08-25
期刊:
影响因子:
4.6
通讯作者:
Hosseinkhani S
Hosseinkhani S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ghafary SM;Nikkhah M;Hatamie S;Hosseinkhani S

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设计合适的纳米载体实现基因的同步传递和追踪是分子医学的研究重点。采用Hummer法合成了具有绿色和红色两种不同发光颜色的无毒石墨烯量子点(GQDs),并用紫外-可见光谱、光致发光(PL)、傅里叶变换红外(FTIR)、拉曼光谱、原子力显微镜(AFM)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对其进行了表征。GQD通过非共价相互作用与MPG-2 H1嵌合肽和质粒DNA(pDNA)缀合。在缀合之后,所制备的GQD的平均直径在复合物结构中从80 nm增加到280 nm,并且复合物的介电电位增加(从-36.87 mV增加到-2.56 mV)。高转染效率的纳米载体和共聚焦显微镜的结果表明,我们的构建物可以被认为是一个无毒的载体,具有基因传递和核靶向的双重功能。
Designing suitable nano-carriers for simultaneous gene delivery and tracking is in the research priorities of the molecular medicine. Non-toxic graphene quantum dots (GQDs) with two different (green and red) emission colors are synthesized by Hummer’s method and characterized by UV-Vis, Photoluminescence (PL), Fourier Transform Infrared (FTIR) and Raman spectroscopies, Atomic Force Microscopy (AFM), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The GQDs are conjugated with MPG-2H1 chimeric peptide and plasmid DNA (pDNA) by non-covalent interactions. Following conjugation, the average diameter of the prepared GQDs increased from 80 nm to 280 nm in complex structure, and the ζ-potential of the complex increased (from −36.87 to −2.56 mV). High transfection efficiency of the nano-carrier and results of confocal microscopy demonstrated that our construct can be considered as a nontoxic carrier with dual functions for gene delivery and nuclear targeting.
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