Transgene complete silencing may associate with rearrangement of retroviral vector.
- Author:
Dan WANG
1
;
Lejia XIAO
;
Qingxin MA
;
Fen ZHAI
;
Sichong REN
;
Changlong LI
Author Information
1. Department of Biochemistry and Molecular Biology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China.
- Publication Type:Journal Article
- MeSH:
Cell Line, Tumor;
Gene Rearrangement;
Gene Silencing;
physiology;
Genetic Engineering;
Genetic Vectors;
genetics;
Humans;
Retroviridae;
genetics;
metabolism;
Transgenes;
genetics
- From:
Journal of Biomedical Engineering
2011;28(2):342-346
- CountryChina
- Language:Chinese
-
Abstract:
Transgene silencing is one of two major obstacles in both basic biomedical research for transgene and clinical practice of gene therapy. Based on the model of HT1080 cell clones, which transduced single copy of retroviral vector MGPN2, the mechanism of transgene silencing was explored in this investigation by a serial molecular techniques. In the HT1080 cell clone that absence of GFP protein synthesized, no significant aberration of epigenetic modification was detected, but the transcript size and the sequence changed that resulted in the reading frame shift. In addition to chromosomal position effect leading to transgene silencing, the transcript reading frame shift associated with retroviral vector rearrangements could induce complete silencing of transgene.
