title: [Transgene complete silencing may associate with rearrangement of retroviral vector].
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.
authors: Department of Biochemistry and Molecular Biology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu 610041, China.
authors: Dan
authors: D
authors: Wang
authors: Lejia
authors: L
authors: Xiao
authors: Qingxin
authors: Q
authors: Ma
authors: Fen
authors: F
authors: Zhai
authors: Sichong
authors: S
authors: Ren
authors: Changlong
authors: C
authors: Li