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Dynamic Surface Proteomes of Allergenic Fungal Conidia.
Journal of Proteome Research ( IF 3.8 ) Pub Date : 2020-04-01 , DOI: 10.1021/acs.jproteome.0c00013
Matthew G Blango 1 , Annica Pschibul 1, 2 , Flora Rivieccio 1, 2 , Thomas Krüger 1 , Muhammad Rafiq 1, 2 , Lei-Jie Jia 1 , Tingting Zheng 3 , Marie Goldmann 1, 2 , Vera Voltersen 1 , Jun Li 4, 5 , Gianni Panagiotou 3 , Olaf Kniemeyer 1, 2 , Axel A Brakhage 1, 2
Affiliation  

Fungal spores and hyphal fragments play an important role as allergens in respiratory diseases. In this study, we performed trypsin shaving and secretome analyses to identify the surface-exposed proteins and secreted/shed proteins of Aspergillus fumigatus conidia, respectively. We investigated the surface proteome under different conditions, including temperature variation and germination. We found that the surface proteome of resting A. fumigatus conidia is not static but instead unexpectedly dynamic, as evidenced by drastically different surface proteomes under different growth conditions. Knockouts of two abundant A. fumigatus surface proteins, ScwA and CweA, were found to function only in fine-tuning the cell wall stress response, implying that the conidial surface is very robust against perturbations. We then compared the surface proteome of A. fumigatus to other allergy-inducing molds, including Alternaria alternata, Penicillium rubens, and Cladosporium herbarum, and performed comparative proteomics on resting and swollen conidia, as well as secreted proteins from germinating conidia. We detected 125 protein ortholog groups, including 80 with putative catalytic activity, in the extracellular region of all four molds, and 42 nonorthologous proteins produced solely by A. fumigatus. Ultimately, this study highlights the dynamic nature of the A. fumigatus conidial surface and provides targets for future diagnostics and immunotherapy.

中文翻译:

过敏性真菌分生孢子的动态表面蛋白质组。

真菌孢子和菌丝碎片在呼吸道疾病中作为过敏原发挥着重要作用。在这项研究中,我们进行了胰蛋白酶剃须和分泌组分析,以分别鉴定烟曲霉分生孢子的表面暴露蛋白和分泌/脱落蛋白。我们研究了不同条件下的表面蛋白质组,包括温度变化和发芽。我们发现静止的烟曲霉分生孢子的表面蛋白质组不是静态的,而是出乎意料的动态,这可以从不同生长条件下截然不同的表面蛋白质组证明。发现两种丰富的烟曲霉表面蛋白 ScwA 和 CweA 的敲除仅在微调细胞壁应激反应中起作用,这意味着分生孢子表面对扰动非常稳健。然后,我们将烟曲霉的表面蛋白质组与其他引起过敏的霉菌进行了比较,包括链格孢菌、青霉和枝孢菌,并对静止和肿胀的分生孢子以及发芽分生孢子的分泌蛋白质进行了比较蛋白质组学。我们在所有四种霉菌的细胞外区域检测到 125 个蛋白质直系同源基团,其中 80 个具有推定的催化活性,以及​​ 42 种仅由烟曲霉产生的非直系同源蛋白质。最终,这项研究突出了烟曲霉分生孢子表面的动态特性,并为未来的诊断和免疫治疗提供了目标。以及从发芽的分生孢子中分泌的蛋白质。我们在所有四种霉菌的细胞外区域检测到 125 个蛋白质直系同源基团,其中 80 个具有推定的催化活性,以及​​ 42 种仅由烟曲霉产生的非直系同源蛋白质。最终,这项研究突出了烟曲霉分生孢子表面的动态特性,并为未来的诊断和免疫治疗提供了目标。以及从发芽的分生孢子中分泌的蛋白质。我们在所有四种霉菌的细胞外区域检测到 125 个蛋白质直系同源基团,其中 80 个具有推定的催化活性,以及​​ 42 种仅由烟曲霉产生的非直系同源蛋白质。最终,这项研究突出了烟曲霉分生孢子表面的动态特性,并为未来的诊断和免疫治疗提供了目标。
更新日期:2020-04-01
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