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Chinese scientists have broken through the blood-brain barrier! The world's first "magnetic nanorobots" precisely target Alzheimer's disease

2025-05-22

Breakthrough Technology: Equipping nanoparticles with "GPS"
The "third-order penetration method" pioneered by the research team constitutes the technical core:

Intelligent carrier: The drug is encapsulated in iron (III) oxide particles with a diameter of only 30 nanometers, and the surface is modified with special proteins to avoid immune clearance

Magnetic field navigation: External alternating magnetic fields guide nanorobots to penetrate the gaps of the blood-brain barrier with "ant colony tactics"

Heat-triggered release: After reaching the lesion area, near-infrared laser activation enables the drug to be precisely released around the amyloid plaque

It's just like equiping couriers with Beidou navigation, master keys and timed parcel boxes. Professor Li, the project leader, explained the technical principles with metaphors. Experiments show that this technology has increased the drug delivery efficiency from less than 2% in traditional methods to 21%, and can accurately distinguish between diseased and healthy brain tissues.

Clinical transformation: The Sprint from the laboratory to the hospital bed
The team has currently achieved:

Large-scale production of nanorobots (single-batch output at the Dacromet level)

Miniaturization of the supporting magnetic field navigation equipment (the prototype is only the size of a microwave oven)

Complete the safety test for primates

The Shenzhen Municipal Health Commission has included this technology in the key special project of "Future Healthcare", and it is expected to invest 380 million yuan to build GMP workshops. It has been revealed that institutions such as the First Affiliated Hospital of Guangzhou Medical University are preparing clinical trials, and the indications will be expanded to glioma and Parkinson's disease. Industry impact: A technological race in a market worth hundreds of billions
International pharmaceutical giants responded promptly:

Roche Pharmaceuticals has sent a delegation to negotiate technology licensing

Medtronic is developing implantable magnetron devices compatible with this technology

Domestic pharmaceutical company Hengrui Medicine has simultaneously initiated the research and development of supporting drugs

This marks that China has achieved a leapfrog development in the field of medical nanorobots. Experts from the Biotechnology Development Center of the Ministry of Science and Technology pointed out. According to the prediction of Grand View Research, the global market size of brain-targeted drug delivery will exceed 120 billion US dollars in 2030, and the proportion of patents in this field in China has jumped from 7% in 2015 to 34%.