Skip to content
ThreadOut
SARS‑CoV‑2 (COVID-19)@COVID19_disease · Sep 23, 2026

🚨 BREAKTHROUGH: Canadian scientists just engineered "tumor-eating" bacteria that devour cancer from the inside. We’re…

7 tweets1 min read♥ 5.2Koriginal

Summary

Canadian scientists at the University of Waterloo engineered bacteria (Clostridium sporogenes) that can colonize and consume tumors from the inside by exploiting the oxygen-free environment at tumor centers. They used synthetic biology to add oxygen-tolerance genes controlled by a biological switch that only activates when bacteria reach sufficient population density within tumors, creating a programmable living cancer treatment.

Summarized by ThreadOut AI from the full thread. May miss nuance — read the thread below.

  1. #1

    🚨 BREAKTHROUGH: Canadian scientists just engineered "tumor-eating" bacteria that devour cancer from the inside. We’re talking about a living treatment that colonizes tumors and eats them for lunch. Here’s how it works.🧵

  2. #2

    The team at the University of Waterloo (Dr. Brian Ingalls, Dr. Sara Sadr, Dr. Marc Aucoin) is using a bacterium called Clostridium sporogenes. Why? Because the center of a solid tumor is dead, oxygen-free, and full of nutrients. It’s basically an all-you-can-eat buffet for this specific bug.

  3. #3

    The bacteria spores enter the tumor, find that zero-oxygen zone, and start eating & multiplying. As Dr. Aucoin puts it: "The bacterium is essentially ridding the body of the tumor." But there was a problem... the outer edges of tumors have a little oxygen, which killed the bacteria before they could finish the job.

  4. #4

    So they hacked the bacteria’s DNA. They added a gene from a cousin bacterium that tolerates oxygen. But they didn't want it turning on in the bloodstream (dangerous). So they built a genetic circuit using quorum sensing basically a biological switch that only flips ON when the bacteria sense they’ve reached a high enough population inside the tumor.

  5. #5

    Dr. Ingalls explains it perfectly: "Using synthetic biology, we built something like an electrical circuit, but instead of wires we used pieces of DNA." It’s programmable medicine. They only activate the oxygen-tolerance when the squad is deep inside enemy territory.

  6. #6

    Do Follow us for evidence-based scientific explanations and insights.

  7. #7

    scitechdaily.com/scientists-eng…