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Deep-Sea Bacterial Molecule Triggers Pyroptosis to Suppress Tumor Growth

By targeting five membrane phospholipids to trigger inflammatory cell death, EPS3.9 has emerged as a preclinical lead for carbohydrate-based cancer drugs.

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Overview

  • EPS3.9 is an exopolysaccharide extracted from the Spongiibacter nanhainus CSC3.9 strain that comprises mannose and glucose.
  • Mechanistic analyses confirm that EPS3.9 binds five specific membrane phospholipids to activate pyroptosis in human leukemia cells.
  • In murine liver cancer models, EPS3.9 treatment significantly reduced tumor burden and stimulated anti-tumor immune responses.
  • Findings published July 23 in The FASEB Journal validate the compound’s mechanism of action and its anti-tumor efficacy.
  • Researchers at the Chinese Academy of Sciences plan to develop EPS3.9 into carbohydrate-based therapies and expand exploration of deep-sea microbial resources.