The diterpene natural product pleuromutilin was subjected to reaction sequences focused on creating ring system diversity in few synthetic steps. This effort resulted in a collection of compounds with previously unreported ring systems, providing a novel set of structurally diverse and highly complex compounds suitable for screening in a variety of different settings. Biological evaluation identified the novel compound ferroptocide, a small molecule that rapidly and robustly induces ferroptotic death of cancer cells. Target identification efforts and CRISPR knockout studies reveal that ferroptocide is an inhibitor of thioredoxin, a key component of the antioxidant system in the cell. Ferroptocide positively modulates the immune system in a murine model of breast cancer and will be a useful tool to study the utility of pro-ferroptotic agents for treatment of cancer.
二
萜类天然产物截短侧耳素经过一系列旨在通过少数合成步骤创造环系多样性的反应序列处理。这一努力产生了一批具有先前未报道环系的化合物,提供了一套结构多样且高度复杂的新化合物,适合在各种不同环境中进行筛选。
生物学评估发现了一种新型化合物
铁死亡素,这是一种小分子,能迅速且强有力地诱导癌细胞发生
铁死亡。目标识别努力和CRI
SPR敲除研究表明,
铁死亡素是一种
硫氧还蛋白
抑制剂,这是细胞抗氧化系统的一个关键组成部分。
铁死亡素在乳腺癌的小鼠模型中正向调节免疫系统,并将成为研究促进
铁死亡剂治疗癌症效用的有用工具。