Scientists engineer bacteria to eat cancer tumors from the inside out
www.sciencedaily.com
Researchers are engineering bacteria to invade tumors and consume them from the inside. Because tumor cores lack oxygen, they’re the perfect breeding ground for these microbes. The team added a genetic tweak that helps the bacteria survive longer near oxygen-exposed edges — but only once enough of them are present to trigger the change. It’s a carefully programmed biological attack that could one day offer a new way to destroy cancer.
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The original was posted on /r/upliftingnews by /u/Past_Product_1476 on 2026-03-02 06:24:23+00:00.

Original Title: University of Waterloo researchers have successfully engineered soil bacteria to “eat” cancer tumors from the inside out. The bacteria target the oxygen-starved core of tumors, leaving healthy, oxygen-rich tissue completely untouched

This breakthrough uses Clostridium sporogenes, a bacterium that naturally thrives only in zero-oxygen environments—exactly like the center of a solid tumor.

The researchers added a “genetic circuit” (using DNA like wires) that acts as a safety switch. It only turns on the bacteria’s survival and cancer-fighting traits once they’ve reached a high enough population inside the tumor. This prevents the bacteria from growing in oxygen-rich areas like the bloodstream, making it a highly targeted “guided missile” for cancer.