Molecular Musical Chairs

The human papillomavirus (HPV) vaccine is safe and effective – but it’s not for everyone. Michelle Ozbun, PhD, and her team at UNM Cancer Center published a research article earlier this year in Antimicrobial Agents and Chemotherapy in which they describe how a drug called protamine sulfate blocks HPV infection. Like a game of musical chairs among molecules, the drug molecules bind to heparan sulfate cell receptors, preventing HPV virus particles from doing so.