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Breakthrough: Malaria Parasite Turned Into Vaccine
13 Aug
Summary
- New experimental vaccine targets malaria's liver stage before symptoms appear.
- It uses a drug to transform mosquito bites into immunization events.
- Mice retained immunity almost two years after receiving the vaccine.
Australian scientists have pioneered an innovative vaccination strategy for malaria, a disease that claims over 610,000 lives annually. This experimental method, successfully tested on mice, targets the parasite during its late liver stage, just before it causes illness.
The unique approach utilizes a drug to permit parasite development within the body before neutralizing it. This process enables the body to generate robust antibodies and immune cells, effectively turning mosquito bites into opportunities for immunization.
Researchers observed that mice vaccinated with this method and later exposed to malaria parasites remained healthy. Notably, they maintained immunity for almost two years. The treatment also proved effective against the human strain of malaria in bioengineered mice, paving the way for imminent human clinical trials.
This breakthrough stems from the discovery that a specific drug disrupts essential proteins, plasmepsin IX and X, which are crucial for the parasite's escape from liver cells. This disruption transforms liver cells into a trap for the parasite.
