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介导抗真菌耐药性的侵袭性形态转变和免疫适应

Invasive morphological transitions and immunoadaptations mediating antifungal resistance.

作者信息

Bengyella Louis, Yekwa Elsie Laban, Subhani Muhammad Nasir, Tambo Ernest, Nawaz Kiran, Hetsa Bakoena Ashton, Iftikhar Sehrish, Waikhom Sayanika Devi, Roy Pranab

机构信息

Department of Biomedical Science, The School of Basic and Biomedical Sciences, University of Health and Allied Sciences, Ho, Ghana.

Department of Biotechnology, Faculty of Applied and Computer Sciences, Vaal University of Technology, Vanderbijlpark, South Africa.

出版信息

Infect Drug Resist. 2017 Nov 7;10:425-436. doi: 10.2147/IDR.S147331. eCollection 2017.

Abstract

BACKGROUND AND AIMS

Thom is a pathogen of public health and agricultural importance for its seamless abilities to expand its ecological niche. The aim of this study was holistically to investigate morphological and immunoadaptations and their implication in antifungal resistance and proliferation during infection.

MATERIALS AND METHODS

In-depth unstructured mining of relevant peer-reviewed literature was performed for morphological, immune, resistance, and genetic diversity based on the sequenced calmodulin-like gene.

RESULTS

Accessory conidia and phialidic conidia produced by confer discrete anti-fungal resistance that ensures survivability during therapies. Interestingly, by producing unique metabolites such as Asp-melanin and terretonin, is capable of hijacking macrophages and scavenging iron, respectively. As such, has established a rare mechanism to mitigate phagocytosis and swing the interaction dynamics in favor of its proliferation and survival in hosts.

CONCLUSION

It is further unraveled that besides genetic diversity, morphological, biochemical, and immunologic adaptations associated with conidia germination and discharge of chemical signals during infection enable masking of the host defense as an integral part of its strategy to survive and rapidly colonize hosts.

摘要

背景与目的

Thom是一种对公共卫生和农业具有重要意义的病原体,因为它具有无缝扩展其生态位的能力。本研究的目的是全面研究其形态和免疫适应性及其在感染过程中对抗真菌耐药性和增殖的影响。

材料与方法

基于测序的类钙调蛋白基因,对相关同行评审文献进行了深入的非结构化挖掘,以获取形态、免疫、耐药性和遗传多样性方面的信息。

结果

Thom产生的副分生孢子和瓶梗状分生孢子具有独特的抗真菌耐药性,可确保其在治疗过程中的生存能力。有趣的是,通过产生诸如天冬氨酸 - 黑色素和土曲霉毒素等独特代谢产物,Thom能够分别劫持巨噬细胞和清除铁元素。因此,Thom建立了一种罕见的机制来减轻吞噬作用,并改变相互作用动态,以利于其在宿主体内的增殖和存活。

结论

进一步揭示的是,除了Thom的遗传多样性外,与分生孢子萌发以及感染期间化学信号释放相关的形态、生化和免疫适应性能够掩盖宿主防御,这是其生存和快速定殖宿主策略的一个组成部分。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7da2/5683776/7efeaa479266/idr-10-425Fig1.jpg

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