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Cholera-Derived Toxin Slows Colorectal Tumors in Mice, Rewiring Local Immunity

Researchers report tumor-targeted activity with safety signals in mouse models using the purified cytotoxin MakA.

Overview

  • Systemic MakA significantly reduced tumor growth in colorectal cancer mouse experiments.
  • The toxin accumulated in tumor tissue, increasing cancer cell death and limiting proliferation.
  • MakA reshaped the tumor microenvironment, boosting innate immune cells such as macrophages and neutrophils.
  • Repeated dosing produced no harmful inflammation or detectable effects on weight, general health, or vital organ function.
  • The peer-reviewed study from Umeå University appears in Cell Death & Disease, and the authors call for broader preclinical testing before any clinical evaluation.