It turns out that bacteria are capable of sacrificing themselves to save their community — and a groundbreaking experiment is harnessing that ability to destroy cancer with remarkable efficiency.
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When a virus attacks bacteria, it injects genetic material into them. That material penetrates the cell, rewrites its genetic code, and hijacks it to replicate the virus over and over, spreading the infection to additional cells.
Certain bacteria are equipped with a self-destruction mechanism that halts the production of new viruses and saves the entire bacterial colony.
This remarkable mechanism relies on proteins and RNA strands found within the bacterial cell's interior. When the RNA strands detect the presence of a virus, the protein unfolds and exposes its inner region, which carries a positive electric charge. That charge attracts the cell's nucleic acids and DNA strands; once they bind to it, the protein clamps onto them, bends them, and shreds them apart until the cell dies.
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Researchers at the University of Utah have succeeded in isolating this capability and deploying it exclusively against cancer cells, without harming the healthy cells surrounding them.
The method builds on CRISPR technology, which is used to cut and edit DNA sequences — but instead of targeting DNA, the researchers focused on detecting RNA specific to cancer cells. When the injected protein recognizes the presence of cancerous RNA inside a cell, it unfolds, binds to the DNA strands, and degrades them completely.
The implications are far-reaching: the approach achieved results comparable to chemotherapy, without the devastating damage and side effects that typically arise from injuring the healthy cells surrounding a tumor.
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This technology poses a direct threat to the traditional cancer drug industry by offering a more effective alternative.
It also holds considerable promise in the field of diagnostics: DNA molecules carrying a fluorescent material can be injected into a test tube containing a patient's blood. If the patient has cancer, the destruction process will be triggered, destroying the DNA in the test tube as well and releasing the fluorescent material. That market alone has the potential to be worth tens of billions of dollars.
The focus on RNA also confers a commercial advantage, as it is not entangled in the legal disputes over ownership that have plagued CRISPR technology.
If this technology does prove itself, there will be a rare beauty in the fact that a trait from nature — self-sacrifice for the good of the collective — will be what prevents suffering and saves human lives.
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👋 Hi, I'm Shlomo Strauss — follow me for more fascinating content on science and technology.