Quantum-dot-decorated robust transductable bioluminescent nanocapsules.

Quantum-dot-decorated robust transductable bioluminescent nanocapsules.
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DOI:
10.1021/ja104299t
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发表时间:
2010-09-22
影响因子:
15
通讯作者:
Lu, Yunfeng
Lu, Yunfeng
中科院分区:
化学1区
文献类型:
--
作者:
Du, Juanjuan;Yu, Changming;Pan, Daocheng;Li, Jianmin;Chen, Wei;Yan, Ming;Segura, Tatiana;Lu, Yunfeng

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Bioluminescence, due to its high sensitivity, has been exploited in various analytical and imaging applications. In this work, we report a highly stable, cell-transductable and wavelength-tunable bioluminescence system achieved with an elegant and simple design. Using aqueous in-situ polymerization on bioluminescent enzyme anchored with polymerizable vinyl groups, we obtained nano-sized core-shell nanocapsules with enzyme as the core and crosslinked thin polymer net as the shell. These nanocapusles possess greatly enhanced stability, retained bioactivity, and readily engineered surface. In particular, by incorporating polymerizable amines in the polymerization, we endowed the nanocapsules with efficient cell-transduction and sufficient conjugation sites for follow-up modification. Following in-situ polymerization, decorating the polymer shell with fluorescent quantum dots allowed us to access continuous tunable wavelength, which extends the application of such bioluminescent nanocapsules, especially in deep tissue. In addition, the unique core-shell structure and adequate conjugation sites on surface enabled us to maximize the BRET efficiency by adjusting the QD/enzyme conjugation ratio.
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