Yurui Liu, Duoteng Zhang, Yunwei Qu, Fang Tang, Hui Wang, Aixiang Ding* and Lin Li*,
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Advances in Small-Molecule Fluorescent pH Probes for Monitoring Mitophagy
Mitochondria play a crucial role in regulating cellular energy homeostasis and cell death, making them essential organelles. Maintaining proper cellular functions relies on the removal of damaged mitochondria through a process called mitophagy. Mitophagy is associated with changes in the pH value and has implications for numerous diseases. To effectively monitor mitophagy, fluorescent probes that exhibit high selectivity and sensitivity based on pH detection have emerged as powerful tools. In this review, we present recent advancements in the monitoring of mitophagy using small-molecule fluorescence pH probes. We focus on various sensing mechanisms employed by these probes, including intramolecular charge transfer (ICT), fluorescence resonance energy transfer (FRET), through bond energy transfer (TBET), and photoelectron transfer (PET). Additionally, we discuss disease models used for studying mitophagy and summarize the design requirements for small-molecule fluorescent pH probes suitable for monitoring the mitophagy process. Lastly, we highlight the remaining challenges in this field and propose potential directions for the future development of mitophagy probes.
期刊介绍:
Chemical & Biomedical Imaging is a peer-reviewed open access journal devoted to the publication of cutting-edge research papers on all aspects of chemical and biomedical imaging. This interdisciplinary field sits at the intersection of chemistry physics biology materials engineering and medicine. The journal aims to bring together researchers from across these disciplines to address cutting-edge challenges of fundamental research and applications.Topics of particular interest include but are not limited to:Imaging of processes and reactionsImaging of nanoscale microscale and mesoscale materialsImaging of biological interactions and interfacesSingle-molecule and cellular imagingWhole-organ and whole-body imagingMolecular imaging probes and contrast agentsBioluminescence chemiluminescence and electrochemiluminescence imagingNanophotonics and imagingChemical tools for new imaging modalitiesChemical and imaging techniques in diagnosis and therapyImaging-guided drug deliveryAI and machine learning assisted imaging