Tumor-resident Lactobacillus iner…metabolic rewiring.

Researchers found that Lactobacillus iners, a bacterium found in tumors, made cervical cancer cells resistant to chemotherapy and radiation treatment, and was linked to worse patient survival. The same type of lactic acid-producing bacteria showed similar concerning patterns across colorectal, lung, head and neck, and skin cancers. Bottom line: this bacterium fundamentally changes how cancer cells metabolize energy, making treatments less effective.