9-O-butyl-13-(4-isopropylbenzyl)berberine, KR-72, Is a Potent Antifungal Agent That Inhibits the Growth of Cryptococcus neoformans by Regulating Gene Expression
作者:Soohyun Bang、Hyojeong Kwon、Hyun Sook Hwang、Ki Duk Park、Sung Uk Kim、Yong-Sun Bahn
DOI:10.1371/journal.pone.0109863
日期:——
In this study we explored the mode of action of KR-72, a 9-O-butyl-13-(4-isopropylbenzyl)berberine derivative previously shown to exhibit potent antifungal activity against a variety of human fungal pathogens. The DNA microarray data revealed that KR-72 treatment significantly changed the transcription profiles of C. neoformans, affecting the expression of more than 2,000 genes. Genes involved in translation and transcription were mostly upregulated, whereas those involved in the cytoskeleton, intracellular trafficking, and lipid metabolism were downregulated. KR-72 also exhibited a strong synergistic effect with the antifungal agent FK506. KR-72 treatment regulated the expression of several essential genes, including ECM16, NOP14, HSP10 and MGE1, which are required for C. neoformans growth. The KR-72-mediated induction of MGE1 also likely reduced the viability of C. neoformans by impairing cell cycle or the DNA repair system. In conclusion, KR-72 showed antifungal activity by modulating diverse biological processes through a mode of action distinct from those of clinically available antifungal drugs such as polyene and azole drugs.
在这项研究中,我们探索了 KR-72 的作用模式,KR-72 是一种 9-O-丁基-13-(4-异丙基苄基)小檗碱衍生物,以前曾被证明对多种人类真菌病原体具有很强的抗真菌活性。DNA 微阵列数据显示,KR-72 的处理显著改变了 C. neoformans 的转录谱,影响了 2000 多个基因的表达。参与翻译和转录的基因大多上调,而参与细胞骨架、细胞内运输和脂质代谢的基因则下调。KR-72 还与抗真菌剂 FK506 具有很强的协同作用。KR-72 处理调节了几个重要基因的表达,包括 ECM16、NOP14、HSP10 和 MGE1,这些基因是 C. neoformans 生长所必需的。KR-72 介导的 MGE1 诱导还可能通过损害细胞周期或 DNA 修复系统来降低 C. neoformans 的活力。总之,KR-72 通过调节不同的生物过程显示出抗真菌活性,其作用模式与临床上可用的抗真菌药物(如多烯类和唑类药物)不同。