Nanoparticle decoration impacts airborne fungal pathobiology

Nanoparticle decoration impacts airborne fungal pathobiology
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纳米颗粒装饰影响空气真菌病理学

DOI:
10.1073/pnas.1804542115
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发表时间:
2018
期刊:
Proceedings of the National Academy of Sciences
影响因子:
--
通讯作者:
Stauber
Stauber
中科院分区:
--
文献类型:
--
作者:
Westmeier;Solouk-Saran;Vallet;Siemer;Docter;Hasenberg;Hahlbrock;Reinhardt;Schilling;Becker;Gunzer;Hasenberg;Knauer;Stauber

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空气中的真菌病原体,主要是烟曲霉,可引起严重的呼吸道疾病。在这里,我们表明,在环境中,真菌孢子已经可以用纳米颗粒装饰。使用代表性的控制纳米颗粒模型,我们证明了各种纳米颗粒,但不是微粒,快速和稳定地与孢子,没有特定的功能化。纳米粒子孢子复合物的形成增强了小纳米粒子的大小,而不是由材料,电荷,或“隐形”的修改,并通过形成环境或生理生物分子冠浓度依赖性地减少。组装纳米颗粒孢子表面杂交结构影响其病理生物学,包括对防御素的敏感性降低,吞噬细胞的摄取,肺细胞毒性和TLR/姜黄素介导的炎症反应。感染小鼠后,在肺中可检测到纳米颗粒-孢子复合物,并且通过肺免疫防御较不有效地消除,从而增强A.免疫功能低下动物的烟熏感染。总的来说,纳米颗粒-真菌复合物的自组装会影响它们的(病理)生物学特性,这可能会影响人类健康和生态。
Airborne fungal pathogens, predominantlyAspergillus fumigatus, can cause severe respiratory tract diseases. Here we show that in environments, fungal spores can already be decorated with nanoparticles. Using representative controlled nanoparticle models, we demonstrate that various nanoparticles, but not microparticles, rapidly and stably associate with spores, without specific functionalization. Nanoparticle-spore complex formation was enhanced by small nanoparticle size rather than by material, charge, or “stealth” modifications and was concentration-dependently reduced by the formation of environmental or physiological biomolecule coronas. Assembly of nanoparticle-spore surface hybrid structures affected their pathobiology, including reduced sensitivity against defensins, uptake into phagocytes, lung cell toxicity, and TLR/cytokine-mediated inflammatory responses. Following infection of mice, nanoparticle-spore complexes were detectable in the lung and less efficiently eliminated by the pulmonary immune defense, thereby enhancingA. fumigatusinfections in immunocompromised animals. Collectively, self-assembly of nanoparticle-fungal complexes affects their (patho)biological identity, which may impact human health and ecology.
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