TGF-β signaling in the kidney: profibrotic and protective effects

Area of Science:

• Nephrology
• Fibrosis Research
• Molecular Biology

Background:

• Transforming growth factor-β (TGF-β) is a key mediator in fibrotic diseases.
• Inhibiting TGF-β is a focus for antifibrotic therapies, but clinical success is limited.
• The protective roles of TGF-β signaling in kidney injury are underexplored.

Purpose of the Study:

• To review recent advances on the diverse roles of TGF-β in renal fibrosis.
• To highlight the protective mechanisms of TGF-β signaling in kidney injury.
• To discuss the potential for developing effective antifibrotic therapies based on TGF-β's multifaceted actions.

Main Methods:

• Literature review of experimental kidney disease models.
• Analysis of studies investigating TGF-β signaling pathways.
• Synthesis of evidence on TGF-β's profibrotic and protective effects.

Main Results:

• TGF-β exhibits multifunctional roles, capable of inducing both fibrosis and protective responses in the kidney.
• Protective effects of TGF-β signaling include inhibition of inflammation and induction of autophagy.
• Experimental models show TGF-β's complex involvement in renal injury.

Conclusions:

• TGF-β signaling has both detrimental (profibrotic) and beneficial (protective) effects in kidney disease.
• Understanding these diverse mechanisms is crucial for designing targeted antifibrotic therapies.
• Further research is required to fully elucidate TGF-β's actions in renal fibrosis and inflammation.