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Role of mTOR Signaling for Tubular Function and Disease

Florian Grahammer1, Tobias B Huber1, Ferruh Artunc2,3,4

  • 1Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.

Physiology (Bethesda, Md.)
|September 13, 2021
PubMed

Insights

The mechanistic target of rapamycin (mTOR) pathway regulates kidney cell functions. Altered mTOR signaling is linked to kidney diseases like diabetic nephropathy and acute kidney injury.

Area of Science:

  • Nephrology
  • Molecular Biology
  • Cellular Metabolism

Background:

  • The mechanistic target of rapamycin (mTOR) pathway involves two distinct multiprotein complexes.
  • These complexes regulate crucial cellular processes including metabolism, proliferation, and survival.
  • Recent research highlights mTOR's role in regulating ion and nutrient transport within the nephron.

Purpose of the Study:

  • To investigate the role of mTOR complexes in kidney function.
  • To explore the connection between altered mTOR activity and kidney diseases.

Main Methods:

  • Analysis of mTOR complex formation and activity.
  • Investigating mTOR's impact on nephron transport mechanisms.
  • Correlating mTOR pathway alterations with specific kidney disease pathologies.

Main Results:

  • mTOR complexes are critical for regulating ion and nutrient transport across the nephron.
  • Dysregulation of mTOR signaling is associated with conditions such as diabetic nephropathy, acute kidney injury, and hyperkalemia.

Conclusions:

  • The mechanistic target of rapamycin pathway is a key regulator of kidney function.
  • Targeting mTOR signaling may offer therapeutic potential for various kidney diseases.
Keywords:
ENaCROMKendocytosismTORproximal tubule

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