期刊
ACS CHEMICAL BIOLOGY
卷 10, 期 7, 页码 1676-1683出版社
AMER CHEMICAL SOC
DOI: 10.1021/acschembio.5b00193
关键词
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资金
- National High Technology Projects 973 [2015CB856200, 2012CB837400]
- NNSFC [21222209, 91313303, 21472010]
Bioorthogonal ligations play a crucial role in labeling diverse types of biomolecules in living systems. Herein, we describe a novel class of ortho-quinolinone quinone methide (oQQM) precursors that show a faster kinetic rate in the click cycloaddition with thio-vinyl ether (TV) than the first generation TQ-ligation in both chemical and biological settings. We further demonstrate that the second generation TQ-ligation is also orthogonal to the widely used strain-promoted azide-alkyne cycloaddition (SPAAC) both in vitro and in vivo, revealing that these two types of bioorthogonal ligations could be used as an ideal reaction pair for the simultaneous tracking of multiple elements within a single system. Remarkably, the second generation TQ-ligation and SPAAC are effective for selective and simultaneous imaging of two different cell organelles in live cells.
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