Photothermal Intracellular Delivery Using Gold Nanodisk Arrays.

Photothermal Intracellular Delivery Using Gold Nanodisk Arrays.
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DOI:
10.1021/acsmaterialslett.0c00428
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发表时间:
2020-11-02
影响因子:
11.4
通讯作者:
Weiss PS
Weiss PS
中科院分区:
化学1区
文献类型:
--
作者:
Zhao C;Man T;Xu X;Yang Q;Liu W;Jonas SJ;Teitell MA;Chiou PY;Weiss PS

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Local heating using pulsed laser-induced photothermal effects on plasmonic nanostructured substrates can be used for intracellular delivery applications. However, the fabrication of plasmonic nanostructured interfaces is hampered by complex nanomanufacturing schemes. Here, we demonstrate the fabrication of large-area plasmonic gold (Au) nanodisk arrays that enable photothermal intracellular delivery of biomolecular cargo at high efficiency. The Au nanodisks (350 nm in diameter) were fabricated using chemical lift-off lithography (CLL). Nanosecond laser pulses were used to excite the plasmonic nanostructures, thereby generating transient pores at the outer membranes of targeted cells that enable the delivery of biomolecules via diffusion. Delivery efficiencies of >98% were achieved using the cell impermeable dye calcein (0.6 kDa) as a model payload, while maintaining cell viabilities at >98%. The highly efficient intracellular delivery approach demonstrated in this work will facilitate translational studies targeting molecular screening and drug testing that bridge laboratory and clinical investigations.
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