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Detection and Isolation of Apoptotic Bodies to High Purity
12:17

Detection and Isolation of Apoptotic Bodies to High Purity

Published on: August 12, 2018

Role of nuclear bodies in apoptosis signalling

Eva Krieghoff-Henning1, Thomas G Hofmann

  • 1Cellular Senescence Group, German Cancer Research Center (DKFZ), DKFZ-ZMBH Alliance, Im Neuenheimer Feld 242, 69120 Heidelberg, Germany.

Biochimica Et Biophysica Acta
|August 6, 2008
PubMed

Insights

Promyelocytic leukemia nuclear bodies (PML NBs) regulate cell death by recruiting tumor suppressors like p53 and releasing apoptotic factors. These nuclear bodies are key to controlling apoptosis, senescence, and tumor suppression.

Area of Science:

  • Cell Biology
  • Molecular Oncology

Background:

  • Promyelocytic leukemia nuclear bodies (PML NBs) are dynamic protein complexes involved in crucial cellular processes.
  • Components of PML NBs play significant roles in apoptosis, senescence regulation, and tumor suppression.

Purpose of the Study:

  • To elucidate the molecular mechanisms by which PML NBs control cellular responses like apoptosis and senescence.
  • To understand the role of PML NBs in response to genotoxic stress and oncogenic transformation.

Main Methods:

  • The study focuses on the recruitment and release of proteins by PML NBs.
  • It examines the interaction of PML NBs with other cellular components and their role in signaling pathways.

Main Results:

  • PML NBs recruit tumor suppressors such as p53, CBP, and HIPK2, which regulate p53 activity to drive senescence and apoptosis.
  • PML NBs can act as depots releasing apoptotic factors like FLASH to amplify death signals upon death-receptor activation.
  • Crosstalk between PML NBs and other nuclear domains (Cajal bodies, nucleoli) in apoptosis regulation is suggested.

Conclusions:

  • PML NBs are critical regulators of cell death decisions.
  • They employ diverse, pathway-specific molecular mechanisms to control apoptosis and senescence.
  • Further understanding of PML NB function is crucial for cancer research.

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