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A novel medium-throughput biological assay system for HTLV-1 infectivity and drug discovery
Mojtaba Fattahi Abdizadeh1,2,3, Manoochehr Makvandi4, Alireza Samarbafzadeh2
1Department of Microbiology, Faculty of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran.
Objectives:
Here, a reporter cell line containing two reporter vectors were developed, in order to monitor the Human T-Lymphotropic Virus type1(HTLV-1) infectivity and the cell viability simultaneously.
Materials And Methods:
The reporter cell line was constructed by stably transfected baby hamster's kidney cell line (BHK-21), with the genomes expressing two different reporters in separate plasmids. The first reporter gene is transactivated by the HTLV-1 tax protein, while the second reporter is continuously expressed when introduced into a mammalian cell. In order to show its functionality, the effect of the drug mix on HTLV-1 was assayed by this system and was compared to the results obtained by other methods.
Results:
HTLV-1 reporter cell line was found to produce high level of luciferase when co-cultured with MT-2 and Hut-102 cells but not with Jurkat cell. Moreover, the combination therapy against HTLV-1 can reduce luciferase expression of the cell when co-cultured with MT-2 and Hut-102 comparable to the ELISA (R=0.932, P-value =0.002). In addition, the results revealed the superiority of the present system over the molecular methods.
Conclusion:
The results demonstrated that the biological assay system is a beneficial tool for the medium-throughput anti-HTLV-1 drug screening and inhibitory effect.
