DM4-SMe 是抗体-美登素偶联物 (AMC) 的代谢产物，是一种微管蛋白 (tubulin) 抑制剂，还是一种抗体-药物偶联物 (ADCs) 的细胞毒性部分，可通过二硫键或稳定的硫醚键与抗体连接。DM4-SMe 抑制 KB 细胞的增殖，IC50 值为 0.026 nM。
DM4-SMe is a metabolite of antibody-maytansin conjugates (AMCs) and a tubulin inhibitor, and also a cytotoxic moiety of antibody-drug conjugates (ADCs), which can be linked to antibody through disulfide bond or stable thioether bond. DM4-SMe inhibits KB cells with an IC50 of 0.026 nM[1][2].
[1]. Widdison W, et al. Metabolites of antibody-maytansinoid conjugates: characteristics and in vitro potencies. Mol Pharm. 2015 Jun 1;12(6):1762-73. [2]. Chen H, et al. Tubulin Inhibitor-Based Antibody-Drug Conjugates for Cancer Therapy. Molecules. 2017 Aug 1;22(8).
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