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Studying Pancreatic Cancer Stem Cell Characteristics for Developing New Treatment Strategies
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Cancer cells employ an evolutionarily conserved polyploidization program to resist therapy.

K J Pienta1, E U Hammarlund2, R H Austin3

  • 1The Brady Urological Institute and the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Johns Hopkins School of Medicine, Baltimore, MD 21287, United States.

Seminars in Cancer Biology
|December 4, 2020
PubMed
Summary
This summary is machine-generated.

Large cancer cells, previously ignored, utilize whole genome doubling for survival under stress. These polyaneuploid cancer cells (PACCs) drive therapeutic resistance, cancer recurrence, and lethality.

Keywords:
Convergent evolutionLethal cancerPolyploid giant cancer cellsTherapeutic resistanceWhole genome doubling

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Area of Science:

  • Oncology
  • Cell Biology
  • Genetics

Background:

  • Unusually large cancer cells with abnormal nuclei have been observed for over 150 years.
  • These cells were historically dismissed as non-functional, senescent, or dying.
  • Cell enlargement and genome doubling are conserved mechanisms across organisms for stress adaptation.

Purpose of the Study:

  • To investigate the role of large, polyploid cancer cells in cancer progression.
  • To understand the mechanisms of polyploidization in cancer.
  • To identify the source of therapeutic resistance and cancer lethality.

Main Methods:

  • Comparative analysis of polyploidization mechanisms in various organisms and non-transformed tissues.
  • Examination of conserved survival programs utilized by cancer cells.

Main Results:

  • Cancer cells employ whole genome doubling and proliferation pausing as a survival strategy under stress.
  • These polyaneuploid cancer cells (PACCs) are linked to therapeutic resistance.
  • PACCs are identified as the cause of cancer recurrence and lethality.

Conclusions:

  • Polyaneuploid cancer cells (PACCs) are not merely non-functional but represent a critical survival mechanism.
  • Understanding PACCs is crucial for developing strategies to overcome therapeutic resistance.
  • PACCs are a key driver of cancer recurrence and fatal outcomes.