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T-2 toxin, produced by Fusarium moulds, is a type A trichothecene mycotoxin which is known to inhibit protein synthesis and also reported to induce DNA lesions, potentially causing DNA fragmentation. T-2 toxin is a very potent cytotoxic toxin, which displays anti-tumor properties. Nevertheless, more studies are still needed to explore its antitumor mechanisms as well as its clinical application in cancer treatment. Here, we report the identification and characterization of a T-2 toxin produced by a Fusarium poae isolated from Jilin, Northeast China. 17 strains of Fusarium poae were screened for T-2 toxin-production and one strain with the highest yield was selected further studies. T-2 toxin produced by the selected Fusarium poae was isolated and purified by HPLC. Anticancer properties of the purified T-2 toxin were evaluated with human hepatoma cell SMMC-7721. The purified T-2 toxin inhibits the proliferation of SMMC-7721 cells and induces cell apoptosis. The mitochondrial membrane potential decreased and the intracellular ROS was up-regulated after T-2 treatment of the cells. Further studies revealed that T-2 treatment activates the intrinsic mitochondrial and MAPKs pathway. Our data provide insight into the promising application of the T-2 toxin in cancer treatment.

rsc advances

Identification and characterization of a T-2 toxin-producingFusarium poaestrain and the anti-tumor effect of the T-2 toxin on human hepatoma cell line SMMC-7721