A groundbreaking study has revealed that a single-cell parasite, Toxoplasma gondii, may be used to deliver therapeutic proteins into brain cells. This breakthrough could potentially treat neurological conditions such as Rett syndrome and other diseases that affect the brain. The parasites' ability to cross the blood-brain barrier and invade brain cells makes them an attractive option for delivering medicine to neurons. While there are challenges to overcome, researchers believe that engineering benign forms of Toxoplasma could provide a new treatment option.

Source: https://www.wired.com/story/parasite-drug-delivery/