Star-shaped conjugated oligoelectrolyte for bioimaging in living cells

Star-shaped conjugated oligoelectrolyte for bioimaging in living cells
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用于活细胞生物成像的星形共轭寡电解质

DOI:
10.1007/s11434-013-5796-0
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发表时间:
2013-05
影响因子:
--
通讯作者:
Huang Wei
Huang Wei
中科院分区:
--
文献类型:
--
作者:
Song WenLi;Jiang RongCui;Yuan Yan;Lu XiaoMei;Hu WenBo;Fan QuLi;Huang Wei

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合成了一种以三苯胺为核、乙炔为键、阴离子芴为臂的新型星形寡聚电解质(TEFCOONa),并将其用于PANC-1细胞的直接成像。由于低聚电解质的疏水共轭基团,TEFCOONa在10 mmol/L PBS中可形成平均粒径约为75 nm的纳米球。这些纳米球具有相对高的绝对量子产率(在PBS中为16.5%)、低细胞毒性,并且可以通过细胞质渗透到细胞核中,这对于活细胞成像是必不可少的。总的来说,这些结果验证了我们的合理设计的共轭低聚电解质,甚至超支化聚合物-共聚电解质作为有效的纳米载体的生物成像和其他临床应用。
A new star-shaped oligoelectrolyte (TEFCOONa) with triphenylamine as the core, acetylene as linkage and anionic fluorenes as arms was obtained and used for direct imaging in living PANC-1 cells. Because of the hydrophobic conjugated groups of the oligoelectrolyte, TEFCOONa can form nanospheres with an average diameter of ∼75 nm in 10 mmol/L PBS. These nanospheres possess a relatively high absolute quantum yield (16.5% in PBS), low cytotoxicity and can penetrate into the nucleus through the cytoplasm, which is essential for living cellular imaging. Collectively, these results validate our rational design of conjugated oligoelectrolyte and even hyper branched polymers-copolyelectrolyte as effective nanovectors for bioimaging and other clinical applications.
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