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mTOR in programmed cell death and its therapeutic implications.

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Mechanistic target of rapamycin (mTOR) regulates programmed cell death (PCD) through both autophagy-dependent and -independent pathways. Understanding these complex mTOR-mediated PCD mechanisms offers potential therapeutic targets for various diseases.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Mechanistic target of rapamycin (mTOR) is a key kinase regulating cellular processes like metabolism and protein synthesis.
  • Programmed cell death (PCD) is essential for tissue homeostasis, immunity, and eliminating damaged cells.
  • mTOR signaling is intricately linked to various forms of PCD, influencing cell survival and death.

Purpose of the Study:

  • To review recent advances in understanding mTOR-mediated regulatory mechanisms in programmed cell death (PCD).
  • To elucidate the dual role of mTOR in both autophagy-dependent and -independent PCD pathways.
  • To highlight the potential of targeting mTOR signaling for therapeutic interventions in diseases involving aberrant PCD.

Main Methods:

  • Literature review of current research on mTOR and PCD.
  • Analysis of signaling pathways involved in autophagy-dependent and -independent PCD.
  • Synthesis of findings on mTOR's role in regulating cell death processes, including ferroptosis.

Main Results:

  • mTOR influences PCD by inhibiting autophagy, affecting reactive oxygen species, and regulating protein degradation.
  • mTOR also modulates PCD independently of autophagy by altering gene expression and protein phosphorylation.
  • mTOR exhibits bidirectional regulation of PCD, with complex mechanisms yet to be fully elucidated.

Conclusions:

  • mTOR plays a critical role in regulating programmed cell death through diverse autophagy-dependent and -independent mechanisms.
  • Further investigation into mTOR-mediated PCD pathways is crucial for understanding its bidirectional regulatory roles.
  • Targeting mTOR signaling pathways presents promising therapeutic avenues for diseases characterized by dysregulated cell death.