and development of colorectal cancer (CRC). Discovery of specific antibacterial agents against F. nucleatum was urgent for the prevention and treatment of CRC. We screened a natural product library and successfully identified higenamine as an antibacterial hit against F. nucleatum. Further hit optimizations led to the discovery of new higenamine derivatives with improved anti-F. nucleatum activity. Among
具核梭杆菌(F. nucleatum)与结直肠癌(CRC)的发生、发展密切相关。发现针对具核梭杆菌的特异性抗菌药物对于预防和治疗结直肠癌迫在眉睫。我们筛选了一个
天然产物库,并成功鉴定去甲
乌药碱对具核梭菌具有抗菌作用。进一步的命中优化导致发现了具有改进的抗具核梭菌活性的新去甲
乌药碱衍
生物。其中,化合物7c对具核梭杆菌表现出强效抗菌活性(MIC 50 = 0.005 μM),对肠道细菌和正常细胞具有良好的选择性。它显着抑制具核梭杆菌诱导的CRC细胞的迁移。机制研究表明,化合物7c损害了
生物膜和细胞壁的完整性,这为开发新型抗具核梭杆菌药物提供了良好的起点。