Delivery of molecules into cells using carbon nanoparticles activated by femtosecond laser pulses.

Delivery of molecules into cells using carbon nanoparticles activated by femtosecond laser pulses.
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DOI:
10.1038/nnano.2010.126
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发表时间:
2010-08
影响因子:
38.3
通讯作者:
--
中科院分区:
材料科学1区
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--
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药物和基因传递的主要障碍是穿过细胞质膜。通过电穿孔、超声波和激光照射施加到细胞的物理力在质膜上产生纳米级的孔,从而将药物直接输送到细胞质中。之前的研究表明,激光激发碳纳米颗粒可以驱动碳-蒸汽反应,产生高度受控的冲击波,受此启发,我们展示了飞秒激光脉冲激活的炭黑(CB)纳米颗粒可以促进小分子、蛋白质和 DNA 输送到两种类型的细胞中。我们的初步结果表明,激光能量和CB纳米颗粒之间的相互作用可能通过化学反应产生光声力,从而在膜上产生瞬态孔以进行传递。
A major barrier to drug and gene delivery is crossing the cell's plasma membrane. Physical forces applied to cells via electroporation, ultrasound and laser-irradiation generate nanoscale holes in the plasma membrane for direct delivery of drugs into the cytoplasm. Inspired by previous work showing that laser excitation of carbon nanoparticles can drive the carbon-steam reaction to generate highly controlled shock waves, here we show carbon black (CB) nanoparticles activated by femtosecond laser pulses can facilitate the delivery of small molecules, proteins and DNA into two types of cells. Our initial results suggest that interaction between the laser energy and CB nanoparticles may generate photoacoustic forces by chemical reaction to create transient holes in the membrane for delivery.
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