JIANG Dai-feng, et al. The study of human leukemia cell K562 transfected with B7 gene[J]. Journal of Chongqing Medical University, 2001,(3):228-230. DOI: 10.13406/j.cnki.cyxb.2001.03.002.
Objective: To assess the potential of costimul atory signal molecule B7 in inducing immune effect and the biological alternatio n of K562-B7.Methods: First
insert B7 gene into eukaryotic expressionplasmid pcDNA3.1B7
then transfect K562 with plasmid pcDNA3.1B7 and select positi ve clone(K562-B7) by G418(600μg/ml).Finaly
analyse the ability of growth and pr oliferation of K562-B7
The secretion of IL-2 was also observed in vitro.Re sults: pcDNA3.1B7 can be stably expressed in K562
and K562-B7 grow more slo wly than wild K562.In addition
IL-2 production per 24 hours in the supernatant stimulated by K562-B7 was about twice as much as that by B7 negative K562. Conclusio n: K562 transfected with B7 gene grow more slowly than K562 and K562-B7 can activate T cell to produce IL-2