Fuscin is a fungal polyketide that antagonizes CCR5 and inhibits MRSA growth and biofilm formation.
Details
Fuscin is a polyketide metabolite isolated from Oidiodendron griseum. It competes with macrophage inflammatory protein-1β for binding to the human CCR5 receptor, a key co-receptor involved in HIV-1 entry, thereby functioning as a CCR5 antagonist. Fuscin and related derivatives also display antibacterial and antibiofilm activity against methicillin-resistant Staphylococcus aureus (MRSA), with docking studies suggesting interaction with biofilm regulatory proteins such as SarA and AgrA. These properties position fuscin as a dual-function research tool for studying viral entry mechanisms and bacterial virulence regulation.