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    					A highly selective fluorescent probe for real-time imaging of UDP-glucuronosyltransferase 1A8 in living cells and tissues  | 
  					 
  					  										
						Mingyue Zhu1,2, Zhenhao Tian3, Lingling Jin2, Xiaokui Huo2, Chao Wang2, Jingnan Cui4, Yan Tian2( ), Xiangge Tian2( ), Lei Feng1,2( ) | 
					 
															
						1. College of Pharmacy, School of Medicine, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Hangzhou Normal University, Hangzhou 311121, China 2. Dalian Key Laboratory of Metabolic Target Characterization and Traditional Chinese Medicine Intervention, College of Pharmacy, College of Integrative Medicine, Dalian Medical University, Dalian 116044, China 3. School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, China 4. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China | 
					 
										
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													     		                            						                            																	    Abstract  Uridine diphosphate (UDP)-glucuronosyltransferases (UGTs) are enzymes involved in the biotransformation of important endogenous compounds such as steroids, bile acids, and hormones as well as exogenous substances including drugs, environmental toxicants, and carcinogens. Here, a novel fluorescent probe BDMP was developed based on boron-dipyrromethene (BODIPY) with high sensitivity for the detection of UGT1A8. The glucuronidation of BDMP not only exhibited a red-emission wavelength (λex/λem = 500/580 nm), but also displayed an excellent UGT1A8-dependent fluorescence signal with a good linear relationship with UGT1A8 concentration. Based on this perfect biocompatibility and cell permeability, BDMP was successfully used to image endogenous UGT1A8 in human cancer cell lines (LoVo and HCT15) in real time. In addition, BDMP could also be used to visualize UGT1A8 in tumor tissues. These results suggested that BDMP is a promising molecular tool for the investigation of UGT1A8-mediated physiological function in humans. 
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															| Keywords 
																																																				UDP-glucuronosyltransferase 1A8  
																		  																																				fluorescent probe  
																		  																																				subtype selectivity  
																		  																																				fluorescence imaging  
																																			  
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																																Corresponding Author(s):
																Yan Tian,Xiangge Tian,Lei Feng   
																													     		
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																																														Online First Date: 13 July 2021   
																																														Issue Date: 27 December 2021
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