期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 56, 期 31, 页码 9155-9159出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201705543
关键词
dendronized semiconducting polymer; gene carriers; light activation; nanoparticles; photothermal effect
资金
- Nanyang Technological University start-up grants [NTU-SUG: M4081627.120, M4081533.080]
- Academic Research Fund Tier 1 from the Singapore Ministry of Education [RG133/15: M4011559.120]
- Academic Research Fund Tier 2 from the Singapore Ministry of Education [MOE2016-T2-1-098, MOE2015-T2-1-112, MOE2016-T2-1-005S]
- Academic Research Fund Tier 3 from the Singapore Ministry of Education [MOE2013-T3-1-004]
Regulation of transgene systems is needed to develop innovative medicines. However, noninvasive remote control of gene expression has been rarely developed and remains challenging. We herein synthesize a near-infrared (NIR) absorbing dendronized semiconducting polymer (DSP) and utilize it as a photothermal nanocarrier not only to efficiently deliver genes but also to spatiotemporally control gene expression in conjunction with heat-inducible promoter. DSP has a high photothermal conversion efficiency (44.2%) at 808 nm, permitting fast transduction of NIR light into thermal signals for intracellular activation of transcription. Such a DSP-mediated remote activation can rapidly and safely result in 25-and 4.5-fold increases in the expression levels of proteins in living cells and mice, respectively. This study thus provides a promising approach to optically regulate transgene systems for on-demand therapeutic transgene dosing.
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