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mTORC1 signaling and the metabolic control of cell growth

Issam Ben-Sahra1, Brendan D Manning1

  • 1Department of Genetics and Complex Diseases, Harvard T.H. Chan School of Public Health, Boston, MA, USA.

Current Opinion in Cell Biology
|April 16, 2017
PubMed

Insights

The mechanistic target of rapamycin complex 1 (mTORC1) links nutrient signals to cell growth by activating anabolic processes. Understanding mTORC1

Area of Science:

  • Cellular biology
  • Metabolism
  • Biochemistry

Background:

  • The mechanistic target of rapamycin (mTOR) is a key kinase regulating cell growth.
  • mTOR functions within mTOR complex 1 (mTORC1) to integrate nutrient signals with metabolic pathways.
  • While upstream regulators of mTORC1 are well-studied, downstream targets controlling cell growth are emerging.

Purpose of the Study:

  • To elucidate the downstream metabolic functions of mTORC1 in controlling cell growth.
  • To highlight the diverse molecular targets through which mTORC1 promotes biosynthesis.
  • To connect mTORC1's metabolic role to human diseases.

Main Methods:

  • Review of current literature on mTORC1 signaling pathways.
  • Analysis of molecular mechanisms linking mTORC1 to anabolic processes.
  • Focus on the biosynthesis of proteins, lipids, and nucleotides.

Main Results:

  • mTORC1 activates key anabolic processes essential for cell growth.
  • mTORC1 promotes the biosynthesis of macromolecules (proteins, lipids, nucleotides).
  • Dysregulated mTORC1 is implicated in diseases like cancer and diabetes.

Conclusions:

  • mTORC1 is a central regulator of cell growth through metabolic control.
  • Understanding mTORC1's downstream targets is crucial for disease insights.
  • Targeting mTORC1 metabolism may offer therapeutic strategies for various pathologies.

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