Tuning cell autophagy by diversifying carbon nanotube surface chemistry.
Tuning cell autophagy by diversifying carbon nanotube surface chemistry.
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DOI:
10.1021/nn500376w
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发表时间:
2014-03-25
期刊:
影响因子:
17.1
通讯作者:
Yan B
中科院分区:
文献类型:
--
作者:
Wu L;Zhang Y;Zhang C;Cui X;Zhai S;Liu Y;Li C;Zhu H;Qu G;Jiang G;Yan B
The induction of autophagy by nanoparticles causes nanotoxicity, but appropriate modulation of autophagy by nanoparticles may have therapeutic potential. Multiwalled carbon nanotubes (MWCNTs) interact with cell membranes and membrane-associated molecules before and after internalization. These interactions alter cellular signaling and impact major cell functions such as cell cycle, apoptosis, and autophagy. In this work, we demonstrated that MWCNT-cell interactions can be modulated by varying densely distributed surface ligands on MWCNTs. Using a fluorescent autophagy-reporting cell line, we evaluated the autophagy induction capability of 81 surface-modified MWCNTs. We identified strong and moderate autophagy-inducing MWCNTs as well as those that did not induce autophagy. Variation of the surface ligand structure of strong autophagy nanoinducers led to the induction of different autophagy-activating signaling pathways, presumably through their different interactions with cell surface receptors.
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影响因子:
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作者:
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