1 research outputs found
A Selective Imidazoline-2-thione-Bearing Two-Photon Fluorescent Probe for Hypochlorous Acid in Mitochondria
Hypochlorite
(OCl<sup>β</sup>) plays a key role in the immune
system and is involved in various diseases. Accordingly, direct detection
of endogenous OCl<sup>β</sup> at the subcellular level is important
for understanding inflammation and cellular apoptosis. In the current
study, a two-photon fluorescent off/on probe (<b>PNIS)</b> bearing
imidazoline-2-thione as an OCl<sup>β</sup> recognition unit
and triphenylphosphine (TPP) as a mitochondrial-targeting group was
synthesized and examined for its ability to image mitochondrial OCl<sup>β</sup> in situ. This probe, based on the specific reaction
between imidazoline-2-thione and OCl<sup>β</sup>, displayed
a selective fluorescent off/on response to OCl<sup>β</sup> with
the various reactive oxygen species in a physiological medium. <b>PNIS</b> was successfully applied to image of endogenously produced
mitochondrial OCl<sup>β</sup> in live RAW 264.7 cells via two-photon
microscopy