mTOR coordinates protein synthesis, mitochondrial activity and proliferation.

Area of Science:

• Cellular biology
• Biochemistry
• Molecular biology

Background:

• Protein synthesis is a major cellular energy consumer.
• The mechanistic target of rapamycin (mTOR) pathway regulates cell growth and proliferation.
• mTOR activity is implicated in metabolic syndrome and cancer.

Purpose of the Study:

• To review the role of mTOR in coordinating energy consumption between mRNA translation and mitochondrial function.
• To highlight the link between mTOR, mRNA translation, and mitochondrial dynamics.

Main Methods:

• Literature review of studies investigating mTOR signaling.
• Analysis of research on mTOR's regulation of protein synthesis.
• Examination of studies on mTOR's influence on mitochondrial biogenesis and function.

Main Results:

• mTOR regulates mRNA translation, a key energy-consuming process.
• mTOR stimulates the synthesis of nucleus-encoded mitochondrial proteins, including TFAM, mitochondrial ribosomal proteins, and components of respiratory complexes I and V.
• mTOR activity integrates extracellular signals to balance cellular energy demands with mitochondrial energy production.

Conclusions:

• mTOR plays a critical role in coordinating cellular energy expenditure by linking mRNA translation with mitochondrial energy production.
• Dysregulation of mTOR is associated with metabolic disorders and cancer, partly through its impact on mitochondrial function.
• Further research into the mTOR-mitochondria axis may reveal novel therapeutic strategies for metabolic and oncological diseases.