Biology
Prion Diseases: Transmission, Diagnosis, and Therapeutic Challenges
Quick fact
Prions are the only known infectious agents that lack nucleic acids (DNA or RNA). They are just misfolded proteins, yet they can transmit disease between individuals, triggering a cascade of misfolding in the host's normal proteins.
Why this is interesting
You've probably heard of diseases caused by viruses, bacteria, or fungi—but what if a disease could be caused by just a misfolded protein? Imagine an infectious agent with no DNA or RNA, yet capable of spreading and destroying the brain. That's the astonishing reality of prion diseases, a group of rare but invariably fatal disorders that challenge our fundamental understanding of biology and medicine.