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Intracellular oxidative damage due to antibiotics on gut bacteria reduced by glutathione oxidoreductase-derived antioxidant molecule GM15
Archives of Microbiology ( IF 2.3 ) Pub Date : 2020-02-14 , DOI: 10.1007/s00203-020-01825-y
Anbazahan Sannasimuthu 1 , Dhrubjyoti Sharma 1 , Bilal Ahamad Paray 2 , Mohammad K Al-Sadoon 2 , Jesu Arockiaraj 3
Affiliation  

The human gut consists of > 1000 different bacterial species for the smooth functioning of the gut. In normal conditions, the antioxidant system present in cells minimize the effects of reactive oxygen species. Upon exposure to antibiotics, there is a rise in ROS level which induces oxidative stress to the cells, ultimately killing the cells. Two broad-spectrum antibiotics, streptomycin and gentamicin at a concentration of 50 µM and 25 µM, were treated with Bacillus subtilis SRMIST201901 (MN726522) and B. cereus SRMIST201902 (MN726923); the treatment reduced the cell counts. Considering the bacterial defense property which relies on the antioxidant mechanism, in this study, we have reported an antioxidant peptide (GM15) derived from glutathione oxidoreductase of spirulina (or called cyanobacteria) Arthrospira platensis ( Ap ) which reduced the intracellular oxidative stress. Cellular ROS detection was confirmed by fluorescent-associated cell sorting (FACS) using the DCFDA dye. Resazurin dye test also confirmed the activity of peptide on the growth of the Bacillus sp . Based on the results obtained, it was concluded that there was a significant ( P < 0.05) reduction in the intracellular oxidative stress on treating with GM15 peptide. Overall, the study indicates the influence of antioxidant peptide on the intracellular oxidative stress, leading to the development of an antioxidant drug from glutathione oxidoreductase of A. platensis against oxidative-related stresses.

中文翻译:

谷胱甘肽氧化还原酶衍生的抗氧化分子 GM15 减少抗生素对肠道细菌的细胞内氧化损伤

人类肠道由 > 1000 种不同的细菌组成,以保证肠道的顺畅运作。在正常情况下,细胞中存在的抗氧化系统最大限度地减少了活性氧的影响。接触抗生素后,ROS 水平会升高,从而对细胞产生氧化应激,最终杀死细胞。用枯草芽孢杆菌 SRMIST201901 (MN726522) 和蜡状芽孢杆菌 SRMIST201902 (MN726923) 处理两种广谱抗生素,链霉素和庆大霉素,浓度分别为 50 µM 和 25 µM;治疗减少了细胞计数。考虑到依赖于抗氧化机制的细菌防御特性,在本研究中,我们报道了一种抗氧化肽 (GM15),它来源于螺旋藻(或称为蓝藻)钝顶藻(Ap)的谷胱甘肽氧化还原酶,可降低细胞内氧化应激。使用 DCFDA 染料通过荧光相关细胞分选 (FACS) 确认细胞 ROS 检测。刃天青染料试验也证实了肽对芽孢杆菌属生长的活性。基于获得的结果,得出结论,用GM15肽处理后细胞内氧化应激显着降低(P < 0.05)。总体而言,该研究表明抗氧化肽对细胞内氧化应激的影响,导致开发了一种抗氧化药物,来自 A. platensis 的谷胱甘肽氧化还原酶,以对抗氧化相关应激。使用 DCFDA 染料通过荧光相关细胞分选 (FACS) 确认细胞 ROS 检测。刃天青染料试验也证实了肽对芽孢杆菌属生长的活性。基于获得的结果,得出结论,用GM15肽处理后细胞内氧化应激显着降低(P < 0.05)。总体而言,该研究表明抗氧化肽对细胞内氧化应激的影响,导致开发了一种抗氧化药物,来自 A. platensis 的谷胱甘肽氧化还原酶,以对抗氧化相关应激。使用 DCFDA 染料通过荧光相关细胞分选 (FACS) 确认细胞 ROS 检测。刃天青染料试验也证实了肽对芽孢杆菌属生长的活性。基于获得的结果,得出结论,用GM15肽处理后细胞内氧化应激显着降低(P < 0.05)。总体而言,该研究表明抗氧化肽对细胞内氧化应激的影响,导致开发了一种抗氧化药物,来自 A. platensis 的谷胱甘肽氧化还原酶,以对抗氧化相关应激。得出的结论是,用 GM15 肽处理后细胞内氧化应激显着降低( P < 0.05)。总体而言,该研究表明抗氧化肽对细胞内氧化应激的影响,导致开发了一种抗氧化药物,来自 A. platensis 的谷胱甘肽氧化还原酶,以对抗氧化相关应激。得出的结论是,用 GM15 肽处理后细胞内氧化应激显着降低( P < 0.05)。总体而言,该研究表明抗氧化肽对细胞内氧化应激的影响,导致开发了一种抗氧化药物,来自 A. platensis 的谷胱甘肽氧化还原酶,以对抗氧化相关应激。
更新日期:2020-02-14
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