A controversial startup in Connecticut is conducting experiments that blur the boundaries between life and death, keeping human brains from recently deceased individuals alive in whirring tanks of pumping fluids. These brains are maintained on the edge of death for hours, with electrical activity muted by anaesthetics, to test experimental drugs for diseases like Parkinson's and Alzheimer's.
The Technology Behind BrainEx
Bexorg, the startup behind this research, uses a machine called BrainEx to keep brains functional for up to 24 hours. The system pumps a synthetic blood through the brain's vessels, delivering oxygen and nutrients while regulating temperature and conditions. Once connected, scientists administer experimental drugs and monitor real-time reactions, gathering data on cellular and protein responses. After the testing period, the brain is sliced into hundreds of pieces for further analysis.
Ethical and Scientific Implications
The approach aims to replace animal testing, which is often criticized for cruelty and inaccuracy. Human brains, with decades of exposure to various factors, offer a more realistic model than lab-grown tissues or organoids. Bexorg has already tested over 700 brains, and pharmaceutical company Biohaven is preparing a clinical trial based on data from these tests. However, concerns persist about potential consciousness in the reanimated brains. Bexorg insists that the brains lack coordinated neural activity required for consciousness, and the synthetic blood contains propofol to suppress electrical activity. Bioethicists on the advisory board support these safeguards.
While the technology promises to accelerate drug development and reduce costs, it raises profound ethical questions about the definition of life and death.
