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Updated: Sep 9, 2025

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage
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DNA Damage, Telomere and Centromere Dysfunction in Chromothripsis Rearrangements.

Radhia M'kacher1, Bruno Colicchio2, Steffen Junker3

  • 1Cell Environment, Evry, France. radhia.mkacher@cell-environment.com.

Methods in Molecular Biology (Clifton, N.J.)
|August 30, 2025
PubMed
Summary
This summary is machine-generated.

Chromothripsis, catastrophic chromosomal rearrangements, involves micronuclei and telomere crisis. Our study reveals telomere and centromere dysfunction impact these events, offering new biomarkers for cancer patient management.

Keywords:
Anaphase bridgeCentromereChromosomal instabilityChromothripsisMicronucleiTelomere

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Area of Science:

  • Genetics and Molecular Biology
  • Cancer Research
  • Genomic Instability

Background:

  • Chromothripsis, characterized by catastrophic chromosomal rearrangements, offers insights into tumor progression and genetic disorders.
  • Established mechanisms include micronuclei incorporation and telomere crisis via dicentric chromosomes.
  • Understanding chromothripsis origins is crucial for advancing cancer research and genetic disorder studies.

Purpose of the Study:

  • To reevaluate the impact of telomere and centromere sequences on micronuclei and anaphase bridge formation in cancer patients.
  • To explore the potential of telomere and centromere dysfunction as prognostic biomarkers.
  • To investigate the utility of combined telomere/centromere dysfunction and DNA damage for personalized patient management.

Main Methods:

  • Utilized a high-throughput technique for detecting telomere and centromere dysfunction.
  • Employed biomarkers for chromosomal instability.
  • Analyzed data from cancer patients.

Main Results:

  • Demonstrated the significant impact of telomere and centromere sequences in the formation of micronuclei and anaphase bridges.
  • Identified specific patterns of telomere and centromere dysfunction associated with chromothripsis.
  • Validated the high-throughput technique for detecting these genomic alterations.

Conclusions:

  • Telomere and centromere dysfunction play a critical role in chromothripsis.
  • Telomere and centromere dysfunction, combined with DNA damage, show promise as prognostic biomarkers.
  • These findings support the development of personalized patient management strategies in oncology.