用丰富的益生菌Bacillus amyloliquefaciens C-1的特征和抗炎作用,这是一种潜在的后生菌
1School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
Scientific reports
|August 31, 2023
概括
氨基面菌C-1有效地将化转化为细胞内纳米颗粒 (SeNPs),显示出抗氧化和抗炎性质. 这种菌株显示出开发丰富后生物和生物材料的潜力.
科学领域:
- 微生物学和生物技术
- 纳米材料科学 科学 纳米材料科学
- 营养科学 营养科学
背景情况:
- 乙氨基面菌C-1是一种专利的菌株,表现出抗压能力,并产生二次代谢产物.
- 该菌株已经显示出发展成丰富后生物的潜力.
- 之前的研究表明,功能性化生产的可能性.
研究的目的:
- 研究Bacillus amyloliquefaciens C-1合成纳米颗粒 (SeNPs) 的能力.
- 描述SeNPs和富含的C-1的抗氧化和抗炎活性.
- 在丰富过程中分析C-1的遗传和代谢变化.
主要方法:
- 优化的发酵条件被用于用酸丰富Bacillus amyloliquefaciens C-1与酸.
- 扫描电子显微镜 (SEM),传输电子显微镜 (TEM),能量分散式X射线光谱学 (EDS) 和X射线光电子光谱学 (XPS) 被用于表征.
- 使用激素清除试验 (超氧化物,氧化物,DPPH) 评估了抗氧化活性. 抗炎作用被评估在Caco-2细胞挑战的S. typhimurium和H2O2,与基因表达分析 (IL-8,IL-1β,TNF-α,Claudin-1,Occludin). 进行了转录组分析,以确定差异性基因表达.
主要成果:
- 亚米洛基面菌C-1成功地将55.51%的烯酸转化为细胞内SeNPs.
- SeNPs表现出显著的抗氧化活性,特别是对抗基激素. 富含的C-1通过保护Caco-2细胞完整性和减少炎症标志物,显示出抗炎作用.
- 转录组分析揭示了显著的基因表达差异,包括与还原通路 (MsrA,醇,谷氨,硫素) 相关的基因的上调和ATP合成和鞭毛基因的下调,影响运动和殖民.
结论:
- 乙氨基面菌C-1有效地通过氧化减少途径从矿合成细胞内SeNP.
- 这些SeNP和富含的细胞具有显著的抗氧化和抗炎性质.
- 这项研究强调了Bacillus amyloliquefaciens C-1及其衍生SeNPs的潜力,用于纳米生物材料和丰富后生物的应用.
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