Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
Extra Chromosomal Dna in Different Cancers: Individual Genome With Important Biological Functions Publisher Pubmed



Karami Fath M1 ; Akbari Oryani M2 ; Ramezani A3 ; Barjoie Mojarad F4 ; Khalesi B5 ; Delazar S6 ; Anjomrooz M7 ; Taghizadeh A8 ; Taghizadeh S9 ; Payandeh Z10 ; Pourzardosht N11
Authors
Show Affiliations
Authors Affiliations
  1. 1. Department of Cellular and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
  2. 2. Department of Pathology, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
  3. 3. Department of Microbiology and Virology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
  4. 4. Department of Radiology, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
  5. 5. Department of Research and Production of Poultry Viral Vaccine, Razi Vaccine and Serum Research Institute, Agricultural Research Education and Extension Organization, Karaj, Iran
  6. 6. Department of Radiology, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. Department of Radiology, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
  8. 8. School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  9. 9. School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  10. 10. Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
  11. 11. Biochemistry Department, Guilan University of Medical Sciences, Rasht, Iran

Source: Critical Reviews in Oncology/Hematology Published:2021


Abstract

Cancer can be caused by various factors, including the malfunction of tumor suppressor genes and the hyper-activation of proto-oncogenes. Tumor-associated extrachromosomal circular DNA (eccDNA) has been shown to adversely affect human health and accelerate malignant actions. Whole-genome sequencing (WGS) on different cancer types suggested that the amplification of ecDNA has increased the oncogene copy number in various cancers. The unique structure and function of ecDNA, its profound significance in cancer, and its help in the comprehension of current cancer genome maps, renders it as a hotspot to explore the tumor pathogenesis and evolution. Illumination of the basic mechanisms of ecDNA may provide more insights into cancer therapeutics. Despite the recent advances, different features of ecDNA require further elucidation. In the present review, we primarily discussed the characteristics, biogenesis, genesis, and origin of ecDNA and later highlighted its functions in both tumorigenesis and therapeutic resistance of different cancers. © 2021