申请人:University of Notre Dame du Lac
公开号:US11168062B2
公开(公告)日:2021-11-09
Clostridium difficile infection (CDI) is a public health threat that results in 14,000 annual deaths in the United States. Challenges involve the production of CDI spores that can remain dormant for years and the production of toxins that damage the gut. Current therapies for CDI include vancomycin and metronidazole, but neither inhibits spore or toxin production. Thus, recurrence of infection occurs in 25% of patients and there are no antibiotics that are effective for multiple recurrences. We describe oxadiazoles with activity against C. difficile, including the highly virulent NAP1/027 strain with increased production of toxins A and B, as well as the additional binary toxin. Oxadiazole 2 is poorly absorbed, thus advantageously achieving high concentrations in the gut. The compound targets peptidoglycan synthesis and inhibits vegetative cells, spores, and toxin production.
艰难梭菌感染(CDI)是一种公共卫生威胁,在美国每年造成 14,000 人死亡。其挑战在于 CDI 孢子的产生,这种孢子可保持休眠状态数年之久,并产生损害肠道的毒素。目前治疗 CDI 的药物包括万古霉素和甲硝唑,但这两种药物都不能抑制孢子或毒素的产生。因此,25% 的患者会出现感染复发,而目前还没有对多次复发有效的抗生素。我们介绍了对艰难梭菌具有活性的噁二唑类药物,包括毒性极强的 NAP1/027 菌株,其毒素 A 和毒素 B 以及额外的二元毒素的产量均有所增加。噁二唑 2 的吸收性很差,因此在肠道中具有高浓度的优势。该化合物靶向肽聚糖合成,抑制无性细胞、孢子和毒素的产生。