作者:Wenzhong Gao、Bengang Xing、Roger Y. Tsien、Jianghong Rao
DOI:10.1021/ja036126o
日期:2003.9.1
of small nonfluorescent fluorogenic substrates becomes brightly fluorescent after β-lactamase hydrolysis with up to 153-fold enhancement in the fluorescence intensity. Less than 500 fM of β-lactamase in cell lysates can be readily detected, and β-lactamase expression in living cells can be imaged with a red fluorescence derivative. These new fluorogenic substrates should find uses in clinical diagnostics
一类新的小型无荧光荧光底物在 β-内酰胺酶水解后发出明亮的荧光,荧光强度提高了 153 倍。细胞裂解物中低于 500 fM 的 β-内酰胺酶可以很容易地检测到,并且活细胞中的 β-内酰胺酶表达可以用红色荧光衍生物成像。这些新的荧光底物应可用于临床诊断并促进 β-内酰胺酶作为生物传感器的应用。