Chimeric adenoviral vector Ad5F35L containing the Ad5 natural long-shaft exhibits efficient gene transfer into human T lymphocytes.
Adoptive therapy using T cells modified with tumour antigen-specific T cell receptor (TCR) genes has become a popular area of research in tumour biotherapy research. However, the efficiency of this treatment is low. To increase the efficiency of this therapy, the antigen specific TCR expression in the T cells needs to be improved. Adenoviral vector-mediated gene expression is an attractive approach to bypass the issue of TCR gene modification. The efficiency of adenovirus vector serotype 5 (Ad5) infection is low due to the absence of coxsackievirus B-adenovirus receptor (CAR) expression in T cells. In the present study, a chimeric adenoviral vector (Ad5F35L) was generated; this construct contained both the natural long-shaft of Ad5 and the Ad35 knob. A transduction study showed that the Ad5F35L vector exhibited a higher transduction efficiency in human primary T lymphocytes than the Ad5 vector and the Ad5F35S vector, which contained the Ad35 natural short-shaft and the Ad35 knob. Similar transduction efficiencies were observed for both CD4(+) T lymphocytes and CD8(+) T lymphocytes and the transfection was independent of the expression of cell surface receptors. The activation of T lymphocytes resulted in an improvement of the Ad5F35L transduction efficiency in CD4(+) T cells and a decrease in Ad5F35L transduction efficiency in CD8(+) T cells. The results demonstrate that Ad5F35L is a promising viral vector and will facilitate the clinical application of tumour antigen-specific TCR gene therapy.
Guang dong Provincial Key Laboratory of Biotechnology Candidate Drug Research, Guangdong Pharmaceutical University, Guang zhou, China; Institute of Genetic Engineering, Southern Medical University, Guang zhou, China; School of Life Science and Biopharmaceutics, Guangdong Pharmaceutical University, Guang zhou, China.
Wen-feng
WF
Zhang
Feng-lin
FL
Wu
Hong-wei
HW
Shao
Teng
T
Wang
Xiao-tong
XT
Huang
Wen-li
WL
Li
Han
H
Shen
Shu-lin
SL
Huang
D000260:Adenoviruses, Human / Q000235:genetics*; D002478:Cells, Cultured; D018014:Gene Transfer Techniques; D005822:Genetic Vectors; D006801:Humans; D013601:T-Lymphocytes / Q000821:virology*; D014161:Transduction, Genetic / Q000379:methods*
Chimeric adenoviral vector; T cell receptor; Transduction efficiency