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Evaluation of Caspase Activation to Assess Innate Immune Cell Death
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Evaluation of Caspase Activation to Assess Innate Immune Cell Death

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Caspases Connect Cell-Death Signaling to Organismal Homeostasis

Lorenzo Galluzzi1, Alejandro López-Soto2, Sharad Kumar3

  • 1Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; INSERM, U1138, 75006 Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France; Université Pierre et Marie Curie/Paris VI, 75006 Paris, France; Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France.

Immunity
|February 18, 2016
PubMed

Insights

Mammalian caspases, primarily known for cell death, are increasingly recognized for regulating inflammatory and immune responses. This review explores how caspases link cell-death signals to maintaining the body's balance.

Area of Science:

  • Molecular Biology
  • Immunology
  • Cell Biology

Background:

  • Caspases are cysteine proteases involved in regulated cell death, like apoptosis.
  • Specific caspases (e.g., caspase 8, 9, 3) induce cell death, while others (e.g., caspase 1, 4) have pro-inflammatory roles.
  • Emerging evidence highlights a conserved function of mammalian caspases in regulating inflammatory and immune responses.

Purpose of the Study:

  • To review the molecular and cellular mechanisms of caspase function.
  • To elucidate the role of caspases in connecting cell-death signaling with organismal homeostasis.
  • To emphasize the conserved role of caspases in immune regulation.

Main Methods:

  • Literature review of molecular and cellular mechanisms.
  • Analysis of existing research on caspase activation and function.
  • Synthesis of evidence linking caspases to inflammation and immunity.

Main Results:

  • Caspases play a critical role beyond initiating cell death.
  • Mammalian caspases are key regulators of inflammatory and immune reactions.
  • These proteases connect cell-death pathways to the maintenance of homeostasis.

Conclusions:

  • The primary conserved function of mammalian caspases is regulating inflammatory and immune responses, not solely cell death.
  • Caspases are crucial mediators linking cellular damage signals to systemic balance.
  • Understanding caspase functions is vital for comprehending host defense and maintaining health.
Keywords:
apoptosomedamage-associated molecular patterninflammasomemitochondrial outer-membrane permeabilizationnecroptosispyroptosis

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