Entrapment in micellar assemblies switches the excimer population of potential therapeutic luminophore azapodophyllotoxin
作者:Soham Mukherjee、Smruti Gupta、Kapil Ganorkar、Ajay Kumar、Sujit Kumar Ghosh
DOI:10.1016/j.saa.2019.117723
日期:2020.3
pre-micellar and post-micellar at physiological and anoxic pH. On photo-excitation, anti-cancer HPFQ exists in monomer-excimer equilibrium with varying ratios in different polarity regions. The marked enhancement in fluorescence intensity of HPFQ in post-micellar region of the surfactant under study probably arises due to regeneration of the monomer from its excimer. This reoccurrence reduces the possibility
Azapodophyllotoxin是一类新型的抗肿瘤药物,具有出色的治疗活性,了解其在仿生微环境中的理化性质可能在其细胞间定位,功效和递送方面具有重要意义。目前的工作概括了一个环境问题的天才,4-(2-羟乙基)-10-苯基-3,4,6,7,8,10-六氢-1H-环戊[g]呋喃[3,4] -b]喹啉-1-一(HPFQ),来自抗癌药物Azapodophyllotoxin,在阳离子CTAB,阴离子SDS和中性Triton X-100的不同电荷模型仿生胶束微环境中,采用紫外线可见吸收,稳定荧光,时间分辨荧光和荧光各向异性研究。作为一种独特的现象,HPFQ抗癌剂在极性不同的溶剂中表现出丰富的荧光,这归因于局部激发,电荷转移和受激准分子发射的混合作用。在两种类型的表面活性剂联合体中,在生理和缺氧pH值下,胶束前和胶束后HPFQ的光物理发生了戏剧性的变化。在光激发下,抗癌HPFQ存在于单体-受体平衡物