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Nutrient sensing.

Anand Venugopal1, Shrinivas Bishu

  • 1Division of Gastroenterology, Department of Medicine, University of Michigan, Ann Arbor, USA.

Current Opinion in Gastroenterology
|January 28, 2021
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Summary
This summary is machine-generated.

Cellular nutrient sensing is vital for adapting to environmental stress. Recent findings highlight the interconnectedness of energy and amino acid sensing pathways, particularly the mammalian target of rapamycin (mTOR) pathway, which is regulated by amino acids.

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Area of Science:

  • Cellular Biology
  • Metabolism
  • Molecular Biology

Background:

  • Nutrient sensing is fundamental for cellular survival and adaptation to environmental changes.
  • Key pathways involved include adenosine monophosphate-activated protein kinase (AMPK) for energy sensing, general amino acid control nonderepresible 2 (GCN2) for amino acid sensing, and mammalian target of rapamycin (mTOR) for metabolic regulation.

Purpose of the Study:

  • To provide a foundational overview of cellular nutrient sensing.
  • To summarize recent advancements in understanding nutrient-sensing pathways.

Main Methods:

  • Review of recent scientific literature.
  • Focus on established and emerging data regarding AMPK, GCN2, and mTOR pathways.

Main Results:

  • Recent data reveals intricate interconnections between energy and amino acid sensing pathways.
  • Amino acids play a crucial role in regulating cellular metabolism, especially through the mTOR pathway.
  • The regulation of these pathways is complex and orchestrated to ensure cellular adaptation.

Conclusions:

  • Cellular nutrient sensing pathways are highly interconnected and responsive to environmental cues.
  • Amino acids are critical regulators of cellular metabolism and adaptation, particularly via the mTOR pathway.