双色念珠菌的性状、毒力、关联因素及介导多药耐药表型的基因突变

IF 2.9 3区 生物学 Q2 MYCOLOGY
Hao Zhou, Xi Yang, Quan Zhou, Cai Hu, Caiyan Xin, Zhangyong Song
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引用次数: 0

摘要

念珠菌病,传统上以白色念珠菌感染为主,现在面临着一个范式转变与非c的出现。白色念珠菌感染,如多重耐药(MDR)念珠菌(原念珠菌)物种。至关重要的是,多重耐药(MDR)假丝酵母(也称为假丝酵母)的出现对抗真菌治疗提出了严峻的挑战。在这项比较研究中,我们分析了四种临床分离的双雄乳香杆菌(cd, cd1, cd2和cd3),以建立菌株特异性毒力和抗真菌耐药性谱。采用结晶紫(CV)和2,3-二-(2-甲氧基-4-硝基-5-磺胺基)- 2h -四氮唑-5-羧基苯胺(XTT)代谢活性测定的生物膜定量结果显示,不同菌株的生物量生产水平不同。细胞聚集能力差异显著,而细胞表面疏水性(CSH)呈相反规律。在mellonella感染模型中,观察到毒力分层。抗真菌药敏试验显示最小抑菌浓度(MIC)为唑类梯度。cd1菌株的耐药范围扩展到5-氟胞嘧啶(5-FC)和阿尼杜拉芬素(ANI),而cd3菌株则表现出与cd2菌株不同的泊沙康唑(PSZ)中间耐药性。氨基酸序列分析表明,cd和cd1菌株在FUR1基因的ERG11和D139N中存在Y132F替代。基因表达分析记录了菌株间不同的调控情况。这些分析提供了一份完整的双色棘球蚴耐药性-毒力矩阵,为流行病学监测建立了基线特征,并为今后的比较研究提供了参考框架。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Character Virulence Association Factors and Gene Mutation Mediating Multidrug Resistance Phenotypes in Candidozyma duobushaemulonii.

Candidiasis, traditionally dominated by Candida albicans infection, now faces a paradigm shift with the emergence of non-C. albicans infections, such as the multidrug-resistant (MDR) Candidozyma (formerly Candida) species. Critically, the emergence of multidrug resistance (MDR) Candidozyma duobushaemulonii (also known as Candida duobushaemulonii) poses critical challenges to antifungal therapy. Here, in this comparative study, we analyzed four clinical C. duobushaemulonii isolates (cd, cd1, cd2, and cd3) to establish strain-specific virulence and antifungal resistance profiles. Biofilm quantification using crystal violet (CV) and 2,3-Bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) metabolic activity assays showed different biomass production levels across strains. Cellular aggregation capacity differed significantly, while cell surface hydrophobicity (CSH) showed inverse patterns. In Galleria mellonella infection models, virulence stratification was observed. Antifungal susceptibility testing revealed minimum inhibitory concentration (MIC) azole gradients. MDR in the cd1 strain extended to 5-fluorocytosine (5-FC) and anidulafungin (ANI), whereas the cd3 strain showed intermediate posaconazole (PSZ) resistance distinct to the cd2 strain. Amino acid sequence analyses indicated that Y132F substitutes in ERG11 and D139N in FUR1 genes occurred in cd and cd1 strains. Gene expression analysis recorded various regulatory situations among strains. These analyses provide a complete resistance-virulence matrix for C. duobushaemulonii, establishing baseline characteristics for epidemiological surveillance and a reference framework for future comparative studies.

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来源期刊
Mycopathologia
Mycopathologia 生物-真菌学
CiteScore
6.80
自引率
3.60%
发文量
76
审稿时长
3 months
期刊介绍: Mycopathologia is an official journal of the International Union of Microbiological Societies (IUMS). Mycopathologia was founded in 1938 with the mission to ‘diffuse the understanding of fungal diseases in man and animals among mycologists’. Many of the milestones discoveries in the field of medical mycology have been communicated through the pages of this journal. Mycopathologia covers a diverse, interdisciplinary range of topics that is unique in breadth and depth. The journal publishes peer-reviewed, original articles highlighting important developments concerning medically important fungi and fungal diseases. The journal highlights important developments in fungal systematics and taxonomy, laboratory diagnosis of fungal infections, antifungal drugs, clinical presentation and treatment, and epidemiology of fungal diseases globally. Timely opinion articles, mini-reviews, and other communications are usually invited at the discretion of the editorial board. Unique case reports highlighting unprecedented progress in the diagnosis and treatment of fungal infections, are published in every issue of the journal. MycopathologiaIMAGE is another regular feature for a brief clinical report of potential interest to a mixed audience of physicians and laboratory scientists. MycopathologiaGENOME is designed for the rapid publication of new genomes of human and animal pathogenic fungi using a checklist-based, standardized format.
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