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通过调节谷的耐受性增强,由Aspergillus sydowiiwii的真空分隔所赋予

Yue Teng¹, Yan Yang², Zhenjun Wang²

¹School of Environmental and Civil Engineering, Jiangsu Key Laboratory of Anaerobic Biotechnology, Jiangnan University, Wuxi 214122, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, China.

|February 19, 2024

概括

谷氨酸 (GSH) 是Aspergillus耐受重金属如 (Cd) 的关键. 这项研究表明,GSH有助于在真空中对Cd进行分隔,并平衡细胞氧化还原,帮助排毒.

科学领域:

环境微生物学环境微生物学
生物修复是一种生物修复.
细胞毒理学细胞毒理学

背景情况:

阿斯珀吉勒斯种类对重金属具有很高的耐受性,这表明它们具有高效的排毒机制.
谷氨 (GSH) 和活性氧物种 (ROS) 在阿斯伯菌中 (Cd) 耐受性中的特定作用仍然不完全理解.
了解这些机制对于推进生物修复战略至关重要.

研究的目的:

为了研究GSH在阿斯珀吉勒斯菌中的积和耐受性中的亚细胞机制.
在Cd压力下的原生体和真空体内量化Cd,GSH和ROS水平.
阐明GSH在真空区分和重金属暴露期间细胞氧化还原平衡中的作用.

主要方法:

总 (Cd),Cd2+,谷氨 (GSH) 和反应性氧物种 (ROS) 在阿斯伯吉路斯菌株原质体和真空体中的量化.
调节GSH合成使用布氨酸硫胺 (BSO) 来降低GSH和2-oxothiazolidine-4-carboxylic acid (OTC) 来增加GSH.
分析Cd-GSH-ROS系统对改变的GSH水平的反应.

主要成果:

在压力下,GSH在Cd的真空分离中发挥着关键作用.
GSH和GSSG作为氧化还原缓冲剂,维持细胞的氧化还原平衡,而GSH可以化Cd,降低毒性.
用BSO或OTC改变GSH水平影响了Cd-GSH-ROS系统,证实了GSH在真空运输和储存中的监管作用.
GSH主要局部在细胞质中,表明它是氧化还原活性的主要部位.

结论:

GSH对于阿斯伯吉勒斯的排毒至关重要,主要是通过真空封存和氧化还原缓冲.
细胞质是涉及GSH的氧化还原反应的主要地点,而不是真空细胞.
提高生物体中的GSH生产能力有望提高未来土壤中的生物修复效率.

关键词:

BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO BSO 在Cd中排毒.在OTC交易所.亚细胞分离子细胞分离

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