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Directing cancer cells to self-destruct with pro-apoptotic receptor agonists

Avi Ashkenazi1

  • 1Department of Molecular Oncology, Genentech Inc., 1 DNA Way, South San Francisco, California 94080-4918, USA. aa@gene.com.

Nature Reviews. Drug Discovery
|November 8, 2008
PubMed

Insights

The human body eliminates billions of cells daily through apoptosis, a process crucial for cancer prevention. Novel pro-apoptotic receptor agonists (PARAs) show promise in directing cancer cells to self-destruct by overcoming resistance mechanisms.

Area of Science:

  • Cell biology
  • Molecular oncology
  • Immunology

Background:

  • Apoptosis, or programmed cell death, is a vital mechanism for eliminating unwanted cells and preventing cancer.
  • Tumor cells can evade apoptosis through specific mutations, leading to increased malignancy.
  • Two primary apoptotic pathways exist: one involving intracellular Bcl-2 proteins and another utilizing cell-surface pro-apoptotic receptors.

Purpose of the Study:

  • To explore the therapeutic potential of targeting apoptosis in cancer treatment.
  • To introduce and discuss the development of pro-apoptotic receptor agonists (PARAs).
  • To highlight how PARAs can overcome apoptosis resistance in cancer cells.

Main Methods:

  • Review of molecular insights into apoptosis signaling pathways.
  • Development of pro-apoptotic receptor agonists (PARAs), such as Apo2L/TRAIL and agonistic monoclonal antibodies.
  • Investigation of PARAs' mechanism of action in inducing cancer cell death.

Main Results:

  • PARAs, including Apo2L/TRAIL and specific antibodies, have been developed based on new molecular understanding.
  • These agents can target cell-surface pro-apoptotic receptors to initiate cell death.
  • PARAs demonstrate potential in overcoming apoptosis blocks that enable tumor cell survival.

Conclusions:

  • Pro-apoptotic receptor agonists (PARAs) represent a promising strategy for cancer therapy.
  • PARAs can induce cancer cell self-destruction by reactivating apoptotic pathways.
  • Targeting apoptosis offers a novel approach to combatting malignant tumors resistant to cell death.

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