Abstract
Background: Antiviral drugs that target viral proteins are very successful but have certain limitations. Consequently, cellular proteins have begun to be considered as potential targets for novel antivirals. Cyclin-dependent kinases (CDKs) are arguably the cellular proteins best studied as potential targets. Several pharmacological CDK inhibitors (PCIs) have antiviral activity against wild-type or drug-resistant strains of HIV, human cytomegalovirus, herpes simplex virus (HSV), Epstein–Barr virus, varicella-zoster virus, Kaposi’s sarcoma herpesvirus, and human T-cell leukemia virus. Some PCIs such as roscovitine are apparently well tolerated and are scheduled to enter clinical trials as antivirals in 2005. However, the antiviral mechanisms of PCIs remain incompletely characterized, and PCIs with different molecular specificities may inhibit different viral functions. Objective: To evaluate whether PCIs with different molecular specificities target common viral functions. Methods: We evaluated the activiti...
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