29709-35-1Relevant articles and documents
Synthesis of Size-Tunable Hollow Polypyrrole Nanostructures and Their Assembly into Folate-Targeting and pH-Responsive Anticancer Drug-Delivery Agents
Chen, Jian,Li, Xiufang,Sun, Yanhua,Hu, Yuwei,Peng, Yulong,Li, Yimin,Yin, Gang,Liu, Hui,Xu, Jiangfeng,Zhong, Shian
, p. 17279 - 17289 (2017)
Chemotherapeutic drugs currently used in clinical settings have high toxicity, low specificity, and short half-lives. Herein, polypyrrole-based anticancer drug nanocapsules were prepared by tailoring the size of the nanoparticles with a template method, controlling drug release by means of an aromatic imine, increasing nanoparticle stability through PEGylation, and improving tumor-cell selectivity by folate mediation. The nanoparticles were characterized by TEM and dynamic light scattering. α-Folate receptor expression levelsof tumor cells and normal cells were investigated by western blot and quantitative polymerase chain reaction analyses. Flow cytometry and fluorescence imaging were used to verify the cell uptake of the different-sized nanoparticles. From the different-sized polypyrrole nanoparticles, the optimally functionalized nanoparticles of 180 nm hydrodynamic diameter were chosen and further usedfor in vitroandin vivotests. The nanoparticles showed excellent biocompatibility and the drug-loaded nanoparticles exhibited effective inhibition of tumor cell growth in vitro. Moreover, the drug-loaded nanoparticles showed substantially enhanced accumulation in tumor regions and effectively inhibitedin vivotumor growth. Furthermore, the nanoparticles showed reduced doxorubicin-induced toxicity andno significant side effects in normal organs of tumor-bearing mice, as measured by body-weight shifts and evaluationof drug distribution. Overall, the functionalized nanoparticles are promising nanocarriers for tumor-targeting drug delivery.
Compound as potassium channel modulator
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Paragraph 0787; 0789; 0790; 0791, (2018/07/30)
The invention relates to a compound as a potassium channel modulator, which is a compound of a formula (I) or a pharmaceutically acceptable salt thereof. The compound or the pharmaceutically acceptable salt thereof is effective for curing and preventing diseases and symptoms influenced by the activity of potassium ion channels.
EIS INHIBITORS
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Paragraph 0025; 0131; 0132, (2018/06/30)
Compounds and compositions are disclosed, which are useful as inhibitors of acetyltransferase Eis, a mediator of kanamycin resistance in Mycobacterium tuberculosis.