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Proton-Activated Chloride Channel: Physiology and Disease
Fanglin Peng1,2, Yi Wu3,4, Xianping Dong5
1School of Health Science and Engineering, University of Shanghai for Science and Technology, 200093 Shanghai, China.
Frontiers in Bioscience (Landmark Edition)
|February 1, 2023
Summary
Proton-activated chloride channels (PAC) regulate pH balance, impacting conditions like cancer and stroke. Understanding PAC
Area of Science:
- Physiology
- Molecular Biology
- Cell Biology
Background:
- Intracellular and extracellular pH balance is crucial and maintained by ion transporters.
- Proton-activated chloride channels (PAC) are key regulators of pH, particularly in endosomes.
- PAC is implicated in pH dysregulation under hypoxic conditions, relevant to cancer and ischemia.
Purpose of the Study:
- To discuss the phenotypic characteristics, molecular mechanisms, and physiology of PAC.
- To elucidate the role of PAC in cancer, ischemic stroke, and hypoxia.
- To provide insights for developing novel therapeutic strategies targeting PAC.
Main Methods:
- Literature review and synthesis of existing research on PAC.
- Analysis of phenotypic characteristics and molecular mechanisms of PAC.
- Examination of PAC's physiological roles in various disease contexts.
Main Results:
- PAC plays a critical role in regulating cellular pH homeostasis.
- PAC involvement in acidic microenvironments of cancer and ischemic tissues is highlighted.
- PAC's function is linked to cellular responses under hypoxic stress.
Conclusions:
- PAC is a significant factor in the pathophysiology of cancer, ischemic stroke, and hypoxia.
- Further research into PAC mechanisms can inform the development of targeted therapies.
- Modulating PAC activity may offer a therapeutic avenue for pH-related diseases.
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