Renoprotection: focus on TRPV1, TRPV4, TRPC6 and TRPM2

Area of Science:

• Nephrology
• Molecular Biology
• Cardiovascular Research

Background:

• Transient receptor potential (TRP) channels are crucial for kidney function, regulating vasodilation and cellular calcium (Ca2+) influx.
• Specific TRP channels, including TRPV1, TRPC6, TRPV4, and TRPM2, have demonstrated roles in kidney injury and disease.
• The renovascular functions of these TRP channels in metabolic diseases like obesity, hypertension, and diabetes remain largely unexplored.

Purpose of the Study:

• To review the current evidence on the roles of TRPV1, TRPV4, TRPC6, and TRPM2 channels in kidney physiology and pathology.
• To explore the potential of these TRP channels as therapeutic targets for renoprotection in the context of chronic vascular and metabolic diseases.

Main Methods:

• Literature review of recent studies on TRP channel function in the kidney.
• Analysis of evidence from rodent models of acute kidney injury and chronic kidney diseases.
• Examination of the involvement of TRP channels in cellular processes like Ca2+ influx and vasodilation.

Main Results:

• Activated TRPV1 channels show renoprotective effects in acute kidney injury models.
• TRPC6 channels are implicated in podocyte dysfunction in chronic proteinuric kidney diseases like FSGS.
• TRPV4 and TRPM2 channels influence Ca2+ influx and cellular processes, with TRPM2 inhibition ameliorating ischemic renal injury.

Conclusions:

• TRPV1, TRPV4, TRPC6, and TRPM2 channels represent promising targets for therapeutic intervention in kidney diseases.
• Further research is needed to elucidate the specific roles of these TRP channels in metabolic and vascular conditions affecting the kidney.
• Targeting these TRP channels could offer novel strategies for acute and chronic renoprotection.