在氧化应激下适应性实验室进化在乳球菌乳糖亚种. 乳糖 LM1009:转录基因改造和功能增强
Soobin Park1, Huijin Jeong1, Yeji You2
1Department of Food Science and Biotechnology, Gachon University, Seongnam, 13120, Republic of Korea.
World journal of microbiology & biotechnology
|November 11, 2025
概括
适应性实验室进化增强了乳球菌乳糖亚种. 乳糖糖 LM10099 的使用情况
科学领域:
- 微生物学 微生物学
- 益生菌 益生菌 益生菌
- 压力 抗压力 抗压力
背景情况:
- 乳球菌乳酸菌亚种. 乳糖 LM1009是一种具有潜在益生菌应用的细菌.
- 氧化应激可以限制益生菌的疗效.
- 改善抗压能力对于增强益生菌功能至关重要.
研究的目的:
- 为了增强Lactococcus lactis亚种的氧化应激抵抗力. 乳糖糖 LM1009.9. 这是一个很好的方法.
- 描述适应菌株的功能和分子变化.
- 为了评估适应菌株的抗炎潜力.
主要方法:
- 使用逐渐增加过氧化度的适应性实验室进化.
- 压力抵抗,粘附和抗氧化活性的表型特征.
- 转录和实时定量PCR分析.
- 在体外评估激活脂多糖糖刺激巨细胞的抗炎作用.
主要成果:
- 一个适应的菌株,L. lactis亚种. 乳糖 LM1009-A,是开发的5毫米的过氧化耐受性.
- 适应的菌株对氧化,酸性和热应激有较强的抗性.
- 观察到改善的抗氧化活性,表面疏水性,自聚和肠粘附.
- 转录组分析揭示了氧化防御和氧化还原平衡通路的显著重编程.
- 适应的菌株抑制了氧化的释放和巨细胞中的炎症标志物.
- 通过ROS介导的信号通路 (MAPK,NF-κB) 的激活减少.
结论:
- 适应性进化成功地产生了一个强大的L. lactis亚种. 乳糖菌株具有优越的抗压能力.
- 适应的菌株表现出增强的功能生物活性,包括抗氧化和抗炎性质.
- L. lactis 亚种 亚种 亚种 乳糖LM1009-A作为下一代益生菌来管理氧化和炎症压力的承诺.
- 调整后的菌株适用于需要增强稳定性和功能性的工业应用.
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