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Updated: Oct 19, 2025
14:26
Genome-wide Purification of Extrachromosomal Circular DNA from Eukaryotic Cells
Published on: April 4, 2016
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Extrachromosomal Circular DNA: Category, Biogenesis, Recognition, and Functions.
Xiukai Cao1, Shan Wang2, Ling Ge2
1Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, China.
Frontiers in Veterinary Science
|September 27, 2021
Summary
Extrachromosomal circular DNA (eccDNA) are small DNA circles found in eukaryotes. This review explores eccDNA
Area of Science:
- Molecular Biology
- Genetics
- Cell Biology
Background:
- Extrachromosomal circular DNA (eccDNA) are double-stranded DNA molecules separate from chromosomes.
- eccDNA exhibit significant heterogeneity in copy number, size, and genomic origin.
- These circular DNA elements are prevalent across eukaryotic organisms.
Purpose of the Study:
- To review current knowledge on the classification, formation, detection, and roles of eccDNA.
- To discuss the implications of eccDNA in various biological processes.
- To provide future perspectives on eccDNA research in life sciences.
Main Methods:
- Literature review of existing studies on eccDNA.
- Synthesis of information regarding eccDNA biogenesis and functions.
- Analysis of eccDNA's role in biological phenomena.
Main Results:
- eccDNA are implicated in critical cellular processes including telomere and rDNA maintenance.
- They play roles in aging, drug resistance, and tumorigenesis.
- eccDNA contribute to phenotypic variation in plants and animals.
Conclusions:
- eccDNA are versatile genetic elements with diverse biological functions.
- Understanding eccDNA is crucial for advancing fields like cancer research and aging.
- Further research into eccDNA holds significant potential for life science innovation.
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