A hybrid aggregate FRET probe from the mixed assembly of cyanine dyes for highly specific monitoring of mitochondria autophagy.
Analytica chimica acta(2021)
Abstract
Mitochondria autophagy, also known as mitophagy, is a process in which mitochondria are wrapped by autophagosomes and fused with lysosomes for degradation. This process is essential for mitochondrial quality control. Here, we developed a hybrid aggregate FRET probe through mixed assembly of two cyanine dyes FMOTY and AMTC. In live cells, FMOTY and AMTC exist independently in lysosomes and mitochondria and will not produce interfering FRET background signals. The FRET signal is only generated when mitochondria is transported to lysosomes during mitophagy. This allows the hybridized aggregate to be used as a highly specific probe for monitoring mitophagy.
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