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Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death
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The role of cell signalling in the crosstalk between autophagy and apoptosis

Laurence A Booth1, Seyedmehrad Tavallai1, Hossein A Hamed1

  • 1Department of Neurosurgery, Virginia Commonwealth University, 401 College St, Richmond, VA 23298, United States.

Cellular Signalling
|December 7, 2013
PubMed

Insights

Cell death involves complex processes like apoptosis (Type I) and autophagy (Type II). These programmed cell death pathways are interconnected, blurring the lines between them and influencing disease pathogenesis.

Area of Science:

  • Cellular Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Apoptosis (Type I cell death) has been the primary focus of programmed cell death research for decades.
  • Autophagy, a cellular degradation process, is increasingly recognized for its role in cell fate determination.
  • The interplay between apoptosis and autophagy complicates the classification of cell death mechanisms.

Purpose of the Study:

  • To review the complex relationship between apoptosis and autophagy in programmed cell death.
  • To explore the potential overlap and distinct features of Type I and Type II cell death.
  • To discuss the implications of this interplay in cellular processes and disease.

Main Methods:

  • Literature review of studies on apoptosis and autophagy.
  • Analysis of molecular mechanisms governing cell death pathways.
  • Comparison of Type I (apoptosis) and Type II (autophagic) cell death.

Main Results:

  • Apoptosis and autophagy are not mutually exclusive and exhibit significant crosstalk.
  • The distinction between Type I and Type II cell death can be ambiguous due to cell-type specific factors and organelle interactions.
  • Autophagy can initiate or precede apoptosis, and caspase inhibition can shift cells towards autophagic cell death.

Conclusions:

  • Programmed cell death is a nuanced process involving intricate interactions between apoptosis and autophagy.
  • Understanding the crosstalk between these pathways is crucial for deciphering cell fate and disease mechanisms.
  • Further research is needed to fully elucidate the boundaries and continuum of Type I and Type II cell death.
Keywords:
ApoptosisAutophagosomeAutophagyCaspaseSorafenib

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