Effect of Leflunomide, Cidofovir and Ciprofloxacin on replication of BKPyV in a salivary gland in vitro culture system

Antiviral Research
Liesl K Jeffers-FrancisJ Y Webster-Cyriaque

Abstract

BK polyomavirus (BKPyV) is a known kidney tropic virus that has been detected at high levels in HIV-associated salivary gland disease (HIV-SGD), one of the most important AIDS associated oral lesions. BKPyV has been detected in HIV-SGD patient saliva and replicates in salivary gland cells in vitro. BKPyV antivirals are currently in wide use to guard against BKPyV mediated organ rejection in kidney transplant recipients. The goal of this study was to investigate the inhibitory effects of three such antiviral agents, Ciprofloxacin, Cidofovir, and Leflunomide in BKPyV infected salivary gland cells. Human salivary gland cells, and Vero cells, were infected with BKPyV, treated with antiviral drugs and assessed for BKPyV gene expression and viral replication for up to 5 days post infection. The kinetics of BKPyV replication were different in salivary gland cells compared to kidney cells. Ciprofloxacin and Cidofovir had minimal effect on metabolic activity and host cell DNA replication, however, cell toxicity was detected at the protein level with Leflunomide treatment. Ciprofloxacin decreased BKV T Ag and VP1 mRNA expression by at least 50% in both cell types, and decreased T Ag protein expression at days 3 and 4 post infection. A 2....Continue Reading

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