Transfection of living HeLa cells with fluorescent poly-cytosine encapsulated Ag nanoclusters.

Transfection of living HeLa cells with fluorescent poly-cytosine encapsulated Ag nanoclusters.
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DOI:
10.1039/c0pp00015a
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发表时间:
2010-05
期刊:
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology
影响因子:
--
通讯作者:
Vosch T
Vosch T
中科院分区:
其他
文献类型:
--
作者:
Antoku Y;Hotta J;Mizuno H;Dickson RM;Hofkens J;Vosch T

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单链寡聚 DNA(24 个胞嘧啶碱基对,C24:Agn)封装的银簇的荧光用于监测活 HeLa 细胞内这种新型银/DNA 荧光团的转染。为此,C24:Agn 分子与市售转染试剂 Lipofectamine 复合,并通过共焦荧光显微镜观察 C24:Agn 的内化。当用 633 nm 激发时,从转染的 HeLa 细胞内部观察到明亮的近红外荧光,这为使用这些 C24:Agn 簇进行活细胞的生物标记和成像以及监测转染过程而对活细胞的伤害有限提供了可能性。
The fluorescence of silver clusters encapsulated by single stranded oligo-DNA (24 cytosine base pairs, C24:Agn) was used to monitor the transfection of this new silver/DNA fluorophore inside living HeLa cells. For this, the C24:Agn molecules were complexed with a commercially available transfection reagent Lipofectamine and the internalization of C24:Agn was followed with confocal fluorescence microscopy. Bright near-infrared fluorescence was observed from inside the transfected HeLa cells, when exciting with 633 nm excitation, opening up the possibility for the use of these C24:Agn clusters for biological labelling and imaging of living cells and for monitoring the transfection process with limited harm to the living cells.
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