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Dual Role of Doxorubicin for Photopolymerization and Therapy.
Biomacromolecules ( IF 5.5 ) Pub Date : 2020-07-29 , DOI: 10.1021/acs.biomac.0c01025
Liwen Zhang 1 , Lisi Xie 2, 3 , Sihao Xu 1 , Rhiannon P Kuchel 4 , Yunlu Dai 2, 3 , Kenward Jung 1 , Cyrille Boyer 1
Affiliation  

In this study, we report dual roles for doxorubicin (DOX), which can serve as an antitumor drug as well as a cocatalyst for a photoliving radical polymerization. DOX enhances the polymerization rates of a broad range of monomers, including acrylamide, acrylate, and methacrylates, allowing for high monomer conversion and well-defined molecular weights under irradiation with a blue light-emitting diode light (λmax = 485 nm, 2.2 mW/cm2). Utilizing this property, the photopolymerization of N,N-diethylacrylamide was performed in the presence of a poly(oligo(ethylene glycol) methyl ether acrylate) macroreversible addition–fragmentation chain transfer (macroRAFT) agent to prepare polymeric nanoparticles via aqueous polymerization-induced self-assembly (PISA). By varying the monomer:macroRAFT ratio, spherical polymeric nanoparticles of various diameters could be produced. Most notably, DOX was successfully encapsulated into the hydrophobic core of nanoparticles during the PISA process. The DOX-loaded nanoparticles were effectively uptaken into tumor cells and significantly inhibited the proliferation of tumor cells, demonstrating that the DOX bioactivity was not affected by the polymerization reaction.

中文翻译:

阿霉素在光聚合和治疗中的双重作用。

在这项研究中,我们报告了阿霉素(DOX)的双重作用,阿霉素既可以用作抗肿瘤药物,也可以用作光活自由基聚合的助催化剂。DOX可提高各种单体(包括丙烯酰胺,丙烯酸酯和甲基丙烯酸酯)的聚合速率,从而在蓝色发光二极管光(λmax = 485 nm,2.2 mW)照射下实现高单体转化率和明确定义的分子量/ cm 2)。利用这一特性,在聚(低聚乙二醇乙二醇甲醚丙烯酸酯)大分子可逆加成-断裂链转移(macroRAFT)剂的存在下,进行了NN-二乙基丙烯酰胺的光聚合,从而通过水性聚合诱导的自组装(PISA)。通过改变单体:macroRAFT的比率,可以产生各种直径的球形聚合物纳米颗粒。最值得注意的是,在PISA过程中,DOX已成功封装到纳米颗粒的疏水核中。载有DOX的纳米颗粒可有效地摄取到肿瘤细胞中,并显着抑制肿瘤细胞的增殖,表明DOX的生物活性不受聚合反应的影响。
更新日期:2020-09-14
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