[an error occurred while processing this directive]

Hereditas(Beijing) ›› 2021, Vol. 43 ›› Issue (6): 571-579.doi: 10.16288/j.yczz.21-062

• Review • Previous Articles     Next Articles

Research and application on LINE-1 in diagnosis and treatment of tumorigenesis

Yanni Kou, Shan Cen(), Xiaoyu Li()   

  1. Department of Immunology, Institute of Medicinal Biotechnology, Chinese academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
  • Received:2021-02-10 Revised:2021-05-07 Online:2021-06-20 Published:2021-05-28
  • Contact: Cen Shan,Li Xiaoyu E-mail:shancen@imb.pumc.edu.cn;xiaoyulik@hotmail.com
  • Supported by:
    Supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China No(2018ZX10301408-004);the National Natural Science Foundation of China No(31870164)

Abstract:

Long interspersed element-1 (LINE-1), which is the only autonomous retrotransposon in human genome, makes up about 17% of the human genome. For LINE-1 retrotransposition may result in genome instability, it was strictly restricted by organisms, and its expression was therefore barely detected in normal somatic cells. However, the expression of LINE-1 is a common phenomenon in most tumor or cancer tissues, suggesting a close relationship between LINE-1 expression and cancer development. Differentially expressed LINE-1 in cancer tissues can be used as a biomarker for tumor diagnosis and an important indicator of prognosis after cancer therapeutics. Meanwhile, the feasibility of LINE-1 as a potential drug target for tumor treatment has also been evaluating and verifying in clinicals. In this review, we introduce the application of LINE-1 as a biomarker in tumor diagnosis and prognostic, as well as the research progress in LINE-1 as potential drug target for tumor treatment, in order to provide some references for clinical application in cancer treatment.

Key words: long interspersed element-1, tumor, diagnosis, treatment, prognosis