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- W4302290772 abstract "Carboxylesterase (CEs), mainly localized in endoplasmic reticulum (ER), are responsible for hydrolyzing compounds containing various ester bonds. They have been closely associated with drug metabolism and cellular homeostasis. Although some CE fluorescent probes have been developed, there are still a lack of probes that could target to the ER. Here, we developed a novel fluorescent probe CR with a specific ER anchor for monitoring CEs. In CR, p-toluenesulfonamide was chosen for precise ER targeting. A simple acetyl moiety was used as the CE response site and fluorescence modulation unit. During the spectral tests, CR displayed a fast response speed (within 10 s) towards CEs. In addition, it showed high sensitivity [limit of detection (LOD) = 5.1 × 10-3 U/ml] and high selectivity with CEs. In biological imaging, probe CR could especially locate in the ER in HepG2 cells. After cells were treated with orilistat, CR succeeded in monitoring the changes in the CEs. Importantly, CR also had the ability to trace the changes in CEs in a tunicamycin-induced ER stress model. Therefore, probe CR could be a powerful molecular tool for further investigating the functions of CEs in the ER." @default.
- W4302290772 created "2022-10-06" @default.
- W4302290772 creator A5030267901 @default.
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- W4302290772 creator A5041159076 @default.
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- W4302290772 date "2022-10-19" @default.
- W4302290772 modified "2023-10-17" @default.
- W4302290772 title "A fast fluorescent probe for tracing endoplasmic reticulum‐located carboxylesterase in living cells" @default.
- W4302290772 cites W1482156052 @default.
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- W4302290772 doi "https://doi.org/10.1002/bio.4392" @default.
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