July 11, 2025 #1 Local News, Information and Event Source for the Century City/Westwood areas.

Study Published Today On Therapy That Uses Salmonella Bacterium to Combat Pancreatic Cancer

ThinkstockPhotos-459886493Researchers at the City of Hope said in a study published today that they have created a therapy that uses the Salmonella bacterium to combat pancreatic ductal adenocarcinoma, an aggressive form of pancreatic cancer.

Patients with pancreatic ductal adenocarcinoma currently have few good therapeutic options, with most medications able to increase survival by only a few months while exacting a high physical toll, City of Hope said in a statement, adding that an engineered Salmonella bacterium is expected to be the exception.

In a new study in the journal Cancer Immunology Research, published by the American Association for Cancer Research, the researchers say that a specific bacterial-based therapy is able to home in on tumors and trigger “an extremely effective tumor-killing response.”

The study, involving laboratory mice, found that the therapy frequently triggered the complete regression of pancreatic tumors and significantly extended survival, the statement said.

“The results were, in a word, remarkable,” said lead researcher Don J. Diamond, Ph.D., who chairs the Department of Experimental Therapeutics at City of Hope. “This method has the potential to treat a variety of cancers that share similar features to pancreatic ductal adenocarcinoma, currently one of the most difficult-to-treat cancers and one for which we desperately need better options.”

Bacteria-based therapies have been used to treat solid tumors for decades and are commonly used to treat bladder cancer, but the success of such therapies has been limited by many tumor defenses. In the new study, Diamond and his colleagues engineered the bacterium Salmonella typhimurium to crack those defenses.

The researchers did so by transforming the bacterium to carry a piece of DNA that targets a molecule known as IDO, which camouflages cancer cells and prevents the immune system from recognizing and killing the tumor, the statement said.

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