Potassium influx pathway (ICVT target)

The potassium influx pathway is a host cellular process that many DNA viruses, such as human papillomavirus (HPV), herpes simplex virus (HSV), and vaccinia virus, depend on for successful replication. These viruses require a specific intracellular ionic environment, particularly high potassium levels, to facilitate critical stages of their life cycle, including viral genome uncoating and the transition between early and late gene expression. Therapeutic strategies targeting this pathway, often referred to as Ionic Contra-Viral Therapy (ICVT), employ inhibitors of key potassium transporters like the sodium/potassium-transporting ATPase (inhibited by digoxin) and the Na+-K+-2Cl- co-transporter-1 (NKCC1, inhibited by furosemide). By lowering intracellular potassium concentrations, these treatments effectively stall viral replication. This host-targeted approach is primarily being developed for topical treatment of viral skin lesions, such as cutaneous warts, and offers the advantage of a high barrier to viral resistance compared to traditional direct-acting antivirals.

Other names

Potassium influx pathway required for DNA virus replicationIonic Contra-Viral Therapy (ICVT) targetK+ influx pathwayNKCC1/Na-K-ATPase systemCellular potassium transport system

Inhibition of host cell potassium influx via the Na+/K+-ATPase and NKCC1 transporters to disrupt the intracellular ionic environment required for DNA virus replication processes such as genome uncoating and gene expression.