Related Experiment Video

Updated: Aug 25, 2026

Genome-wide Purification of Extrachromosomal Circular DNA from Eukaryotic Cells
14:26

Genome-wide Purification of Extrachromosomal Circular DNA from Eukaryotic Cells

Published on: April 4, 2016

Extrachromosomal DNA in Oncology: History of Discovery, Research Methods, and Current Perspectives

Vera S Mukhina1, Alexander V Favorov2,3

  • 1Vavilov Institute of General Genetics, Russian Academy of Sciences, Moscow, 119991, Russia. atgc@vigg.ru.

Biochemistry. Biokhimiia
|August 23, 2026
PubMed

Insights

Extrachromosomal DNA (ecDNA) in cancer cells drives drug resistance and poor prognosis. Recent advances illuminate ecDNA

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Extrachromosomal DNA (ecDNA) comprises circular DNA molecules lacking centromeres, frequently observed in cancer cell nuclei.
  • The presence of ecDNA correlates with acquired drug resistance and diminished patient survival.
  • Despite its discovery decades ago, recent technological progress has significantly enhanced our understanding of ecDNA's role in cancer.

Purpose of the Study:

  • To review the historical milestones in extrachromosomal DNA research.
  • To summarize the current state of knowledge regarding ecDNA biology and its clinical implications as of 2025.
  • To provide a comprehensive overview of ecDNA formation, organization, function, detection, and future research avenues.

Main Methods:

  • Literature review of historical and recent publications on ecDNA.
  • Synthesis of current research findings on ecDNA mechanisms, detection, and clinical relevance.
  • Analysis of technological advancements impacting ecDNA studies.

Main Results:

  • EcDNA plays a significant role in cancer development and progression, more than previously understood.
  • Key mechanisms of ecDNA formation, structure, and function are increasingly elucidated.
  • Advanced methods for ecDNA detection and analysis are becoming available, aiding clinical applications.

Conclusions:

  • Extrachromosomal DNA is a critical factor in cancer pathogenesis, drug resistance, and prognosis.
  • Continued research into ecDNA biology and detection holds promise for novel cancer therapies.
  • Understanding ecDNA is essential for advancing cancer treatment strategies.
Keywords:
ecDNAepigeneticsextrachromosomal DNAgenomic rearrangementshistory of scienceoncology

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