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Published on: May 26, 2022
Ion channels as a therapeutic target for renal fibrosis
Peng Yan1, Ben Ke1, Xiangdong Fang1
1Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.
Abstract:
Renal ion channel transport and electrolyte disturbances play an important role in the process of functional impairment and fibrosis in the kidney. It is well known that there are limited effective drugs for the treatment of renal fibrosis, and since a large number of ion channels are involved in the renal fibrosis process, understanding the mechanisms of ion channel transport and the complex network of signaling cascades between them is essential to identify potential therapeutic approaches to slow down renal fibrosis. This review summarizes the current work of ion channels in renal fibrosis. We pay close attention to the effect of cystic fibrosis transmembrane conductance regulator (CFTR), transmembrane Member 16A (TMEM16A) and other Cl- channel mediated signaling pathways and ion concentrations on fibrosis, as well as the various complex mechanisms for the action of Ca2+ handling channels including Ca2+-release-activated Ca2+ channel (CRAC), purinergic receptor, and transient receptor potential (TRP) channels. Furthermore, we also focus on the contribution of Na+ transport such as epithelial sodium channel (ENaC), Na+, K+-ATPase, Na+-H+ exchangers, and K+ channels like Ca2+-activated K+ channels, voltage-dependent K+ channel, ATP-sensitive K+ channels on renal fibrosis. Proposed potential therapeutic approaches through further dissection of these mechanisms may provide new therapeutic opportunities to reduce the burden of chronic kidney disease.
Insights
Renal ion channels are crucial in kidney fibrosis. Understanding their transport and signaling pathways offers new therapeutic targets for chronic kidney disease.
Area of Science:
- Nephrology
- Molecular Biology
- Physiology
Background:
- Renal ion channel dysfunction contributes to kidney disease progression and fibrosis.
- Effective treatments for renal fibrosis are limited, necessitating novel therapeutic strategies.
- Ion channels are integral to renal electrolyte balance and cellular signaling.
Purpose of the Study:
- To review the role of various ion channels in renal fibrosis.
- To elucidate the signaling pathways and mechanisms involving ion channels in kidney fibrosis.
- To identify potential therapeutic targets for mitigating renal fibrosis.
Main Methods:
- Literature review of studies on ion channels and renal fibrosis.
- Analysis of signaling pathways mediated by chloride, calcium, and sodium channels.
- Examination of the contribution of potassium channels to renal fibrosis.
Main Results:
- Cystic fibrosis transmembrane conductance regulator (CFTR) and transmembrane Member 16A (TMEM16A) chloride channels influence renal fibrosis.
- Calcium (Ca2+) handling channels, including CRAC, purinergic receptors, and TRP channels, are implicated in fibrosis.
- Sodium (Na+) transport channels (ENaC, Na+, K+-ATPase, Na+-H+ exchangers) and potassium (K+) channels also play significant roles.
Conclusions:
- Dissecting ion channel mechanisms in renal fibrosis can reveal new therapeutic avenues.
- Targeting specific ion channels may offer strategies to slow renal fibrosis progression.
- Further research into these channels could lead to novel treatments for chronic kidney disease.
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