Development of ‘Smart’ DNA Drug That Functions Like an Internal Computer in the Body

Scientists at the University of Geneva have developed a ‘smart’ drug system that operates like a tiny computer inside the body. Made from synthetic DNA, this drug specifically destroys cancer cells while protecting healthy cells. This research was recently published in the prestigious scientific journal Nature Biotechnology.

The system works based on the concept of computer “logic gates.” Similar to two-factor authentication used in digital banking, this drug activates through a dual-switch mechanism. The drug contains different DNA strands, and it only activates when it detects two specific markers on the surface of cancer cells. If it finds only one marker or none at all, the drug remains inactive, thereby safeguarding healthy cells that are free of cancer.

Upon detecting cancer cells, the drug initiates a chain reaction that increases the concentration of the drug at the tumor site, enhancing treatment effectiveness. Unlike conventional chemotherapy, which destroys both cancerous and healthy cells, this smart drug does not harm healthy tissues. Furthermore, it can carry multiple kinds of drugs simultaneously, helping to overcome the resistance that cancer cells often develop against medication.

According to lead author Professor Nicolas Winssinger, the complexity of designing new drugs with the aid of computers and artificial intelligence is now a thing of the past. This drug has the capability to understand biological signals and respond intelligently based on them. The technology is poised to open new doors for personalized medicine. Researchers are currently working to refine this approach further and develop even more complex “smart” drugs that can make decisions autonomously within the body.