Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil.
Fungal Genet Biol. 2013 Nov;60:74-86. doi: 10.1016/j.fgb.2013.07.001. Epub 2013 Jul 13.
Candida albicans is the most common fungal pathogen of humans, forming both commensal and opportunistic pathogenic interactions, causing a variety of skin and soft tissue infections in healthy people. In immunocompromised patients C. albicans can result in invasive, systemic infections that are associated with a high incidence of mortality. Propolis is a complex mixture of several resinous substances which are collected from plants by bees. Here, we demonstrated the fungicidal activity of propolis against all three morphogenetic types of C. albicans and that propolis-induced cell death was mediated via metacaspase and Ras signaling. To identify genes that were involved in propolis tolerance, we screened ~800 C. albicans homozygous deletion mutants for decreased tolerance to propolis. Fifty-one mutant strains were identified as being hypersensitive to propolis including seventeen genes involved in cell adhesion, biofilm formation, filamentous growth, phenotypic switching and pathogenesis (HST7, GIN4, VPS34, HOG1, ISW2, SUV3, MDS3, HDA2, KAR3, YHB1, NUP85, CDC10, MNN9, ACE2, FKH2, and SNF5). We validated these results by showing that propolis inhibited the transition from yeast-like to hyphal growth. Propolis was shown to contain compounds that conferred fluorescent properties to C. albicans cells. Moreover, we have shown that a topical pharmaceutical preparation, based upon propolis, was able to control C. albicans infections in a mouse model for vulvovaginal candidiasis. Our results strongly indicate that propolis could be used as a strategy for controlling candidiasis.
白色念珠菌是人类最常见的真菌病原体,形成共生和机会致病的相互作用,导致健康人群中各种皮肤和软组织感染。在免疫功能低下的患者中,白色念珠菌可导致侵袭性、系统性感染,死亡率高。蜂胶是由蜜蜂从植物中收集的几种树脂物质的复杂混合物。在这里,我们证明了蜂胶对白色念珠菌的所有三种形态发生类型都具有杀菌活性,并且蜂胶诱导的细胞死亡是通过介导线粒体半胱天冬酶和 Ras 信号传导介导的。为了鉴定参与蜂胶耐受的基因,我们筛选了大约 800 株白色念珠菌纯合缺失突变体,以确定它们对蜂胶的耐受性降低。鉴定出 51 株突变株对蜂胶敏感,包括 17 个与细胞黏附、生物膜形成、丝状生长、表型转换和发病机制相关的基因(HST7、GIN4、VPS34、HOG1、ISW2、SUV3、MDS3、HDA2、KAR3、YHB1、NUP85、CDC10、MNN9、ACE2、FKH2 和 SNF5)。我们通过显示蜂胶抑制从酵母样到菌丝生长的转变验证了这些结果。蜂胶被证明含有使白色念珠菌细胞具有荧光特性的化合物。此外,我们已经表明,基于蜂胶的局部药物制剂能够控制阴道念珠菌病小鼠模型中的白色念珠菌感染。我们的研究结果强烈表明,蜂胶可作为控制念珠菌病的一种策略。
Fungal Genet Biol. 2013-7-13
J Chemother. 2003-10
J Altern Complement Med. 2010-3
Appl Microbiol Biotechnol. 2019-10-28
J Proteome Res. 2025-7-4
Polymers (Basel). 2024-6-26
J Fungi (Basel). 2024-1-23
Appl Environ Microbiol. 2022-5-24
Antibiotics (Basel). 2021-11-13