内质网
荧光
内生
费斯特共振能量转移
未折叠蛋白反应
香豆素
生物物理学
分布(数学)
跟踪(教育)
化学
材料科学
生物
生物化学
物理
光学
有机化学
数学分析
数学
教育学
心理学
作者
Guo Jun-gu,Hao Yuan,Yuncong Chen,Zhongyan Chen,Menglong Zhao,Liang Zou,Yi Liu,Zhipeng Liu,Qiang Zhao,Zijian Guo,Weijiang He
标识
DOI:10.1007/s11426-018-9424-8
摘要
A two-photon ratiometric fluorescent sensor for Cu+ in endoplasmic reticulum (ER), CNSB , was developed via coumarin/ASBD integration based on FRET mechanism. In solution, CNSB shows reversible, highly-specific ratiometric response to Cu+. Moreover, CNSB exhibits suitable K d value, suggesting the possibility of detecting Cu+ in the living cells. The probe can enter the MCF-7 cells easily and specifically locates in the ER. The highly specific ratiometric response of CNSB toward Cu+ in MCF-7 cells provides the sensor the capacity to visualize both exogenous and endogenous Cu+ in the ER via fluorescence imaging. Next, CNSB was utilized to detect the fluctuation and distribution of Cu+ under ER stress in MCF-7 cells, which confirmed directly the relationship between Cu+ enhancement and ER stress. Meanwhile, the two-photon ability of coumarin facilitated the sensor to visualize Cu+ fluctuation via two-photon fluorescence imaging. In addition, the spatial distribution of Cu+ in the heart slice of the 14-day-old rat was demonstrated using CNSB . This study demonstrates the promising potential of CNSB in clarifying the Cu+-dependent signaling in the ER stress-related diseases.
科研通智能强力驱动
Strongly Powered by AbleSci AI