purine analogs

Purine analogs are medication compounds that resemble natural purines—building blocks of DNA and RNA. They work by mimicking these bases and interfering with cell processes, particularly in rapidly dividing cells like cancer or infected cells. By incorporating into genetic material or blocking enzymes involved in DNA synthesis, purine analogs can hinder cell growth and replication. They are often used in chemotherapy and antiviral treatments to target abnormal cells while aiming to minimize effects on healthy tissue.