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In Vitro Studies with Modoc Virus in Vero Cells: Plaque Assay and Kinetics of Growth, Neutralization, and Thermal Inactivation

机译:Modoc病毒在Vero细胞中的体外研究:斑块测定以及生长,中和和热失活的动力学

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A sensitive and quantitative assay system is described for plaquing Modoc virus in Vero cells. Neutralizing antibodies to Modoc virus could be detected by using this in vitro system by their interference with viral plaque formation. Virus was readily neutralized within 30 min at 37 C by a 1:10 dilution of hyperimmune hamster serum. The rate of neutralization and the total amount of virus neutralized was not altered significantly by the addition of 20 U of guinea pig complement to the hyperimmune hamster serum. A study of the growth of Modoc virus in Vero cells is also presented. After an initial latent period of 20 h, viral titer increased exponentially for 20 h. By 83 h after infection, 8,000 plaque-forming units of virus were detected per cell. The stability of viral infectivity in phosphate-buffered saline at pH 7.4 was evaluated. No reduction in viral titer was detected after 3 days at 7 or 22 C. A continuous decrease in infectivity at 37 C was observed, however, throughout the observation period.
机译:描述了一种灵敏的定量测定系统,用于在Moo细胞中噬菌Modoc病毒。通过使用该体外系统,可以通过干扰病毒斑形成来检测针对Modoc病毒的中和抗体。病毒很容易在30分钟内于37°C通过1:10稀释的超免疫仓鼠血清中和。通过向超免疫仓鼠血清中添加20 U豚鼠补体,中和率和中和病毒的总量没有明显改变。还提出了Modoc病毒在Vero细胞中生长的研究。在初始潜伏期20小时后,病毒滴度在20小时内呈指数增长。感染后83小时,每个细胞检测到8,000个噬菌斑形成单位。评估了在pH 7.4的磷酸盐缓冲盐水中病毒感染力的稳定性。在7或22 C下3天后未检测到病毒滴度降低。然而,在整个观察期内,在37 C下观察到感染力连续下降。

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