期刊
ADVANCED MATERIALS
卷 30, 期 22, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201707459
关键词
cell membrane envelope; gene transfection; host-specific targeting; MR imaging; virus-mimetic biocarriage
类别
资金
- National Natural Science Foundation of China [51533006, 21374085]
- National Key Research and Development Program of China [2016YFC1100703]
Many viruses have a lipid envelope derived from the host cell membrane that contributes much to the host specificity and the cellular invasion. This study puts forward a virus-inspired technology that allows targeted genetic delivery free from man-made materials. Genetic therapeutics, metal ions, and biologically derived cell membranes are nanointegrated. Vulnerable genetic therapeutics contained in the formed nanogene can be well protected from unwanted attacks by blood components and enzymes. The surface envelope composed of cancer cell membrane fragments enables host-specific targeting of the nanogene to the source cancer cells and homologous tumors while effectively inhibiting recognition by macrophages. High transfection efficiency highlights the potential of this technology for practical applications. Another unique merit of this technology arises from the facile combination of special biofunction of metal ions with genetic therapy. Typically, Gd(III)-involved nanogene generates a much higher T-1 relaxation rate than the clinically used Gd magnetic resonance imaging agent and harvests the enhanced MRI contrast at tumors. This virus-inspired technology points out a distinctive new avenue for the disease-specific transport of genetic therapeutics and other biomacromolecules.
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