Syntheses of bifunctional molecules containing [12]aneN3 and carbazol moieties as effective DNA condensation agents
作者:Hao Yan、Pan Yue、ZhiFen Li、ZhiFo Guo、ZhongLin Lu
DOI:10.1007/s11426-013-5031-5
日期:2014.2
Bifunctional molecules containing macrocyclic polyamine [12]aneN3 and carbazol units, 1–4, have been efficiently synthesized and fully characterized. Through gel electrophoresis, atomic force microscopy, and dynamic light scattering experiments, compounds 3 and 4b bearing both [12]aneN3 and carbazol moieties showed effective DNA condensation ability at the concentration of 80 μM. Investigations from EB displacement fluorescence spectra, viscosity titration, and ionic strength effects revealed that the effective DNA condensation comes from the appropriate combination of carbazol and [12]aneN3 units in the bifunctional molecules, and the DNA condensation process is reversible. The incorporation of triazole units in the molecules clearly reduced the cytotoxicity.
含有大环多胺[12]aneN3和咔唑单元的双功能分子1-4已被高效合成并充分表征。通过凝胶电泳、原子力显微镜和动态光散射实验,同时含有[12]aneN3 和咔唑单元的化合物 3 和 4b 在 80 μM 浓度下显示出有效的 DNA 缩合能力。对 EB 置换荧光光谱、粘度滴定和离子强度效应的研究表明,DNA 的有效缩合来自于双官能团分子中咔唑和 [12]aneN3 单元的适当组合,而且 DNA 的缩合过程是可逆的。在分子中加入三唑单元明显降低了细胞毒性。