[Anti-SARS virus activities of different recombinant human interferons in cell culture system].

BACKGROUND:To study the anti-SARS virus activities of different recombinant human interferons on the cell culture system. METHODS:Anti-SARS virus activities of interferons were determined by using CPE inhibition test in human skeletal muscle sarcoma (Rda) cell culture. RESULTS:The average minimum amount of interferon alpha 2b, alpha 1b, beta 1b or omega 1b to inhibit 50% CPE in Rda cell culture was (160.5+/-129.5) IU/ml, (149.0+/-71.7) IU/ml, (69.5+/-61.5) IU/ml, (87.3+/-47.1) IU/ml, respectively or (0.6+/-0.5) ng/ml, (10.6+/-5.1) ng/ml, (3.5+/-3.1) ng/ml, (0.9+/-0.5) ng/ml, respectively. CONCLUSION:All the tested recombinant interferons showed anti-SARS virus activities on the Rda cell culture with different sensitivities.