在Euglena gracilis中通过CRISPR/Cas9和它的抗衰老效果增强了帕拉米隆的生产
Yajun Huang1,2, Xinyue Yang3, Hanqi Liu1
1College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Journal of agricultural and food chemistry
|July 30, 2025
概括
改造的Euglena gracilis菌株显著提高了帕拉米隆的生产. 这种纯化的帕拉米隆在Caenorhabditis elegans中表现出强大的抗氧化和抗衰老作用,增强了线粒体功能和寿命.
科学领域:
- 生物技术是生物技术.
- 微生物学 微生物学
- 生物化学 生物化学
背景情况:
- 优格莱利斯 (Euglena gracilis) 是一种微藻类,能够合成一种独特的多糖化合物 - - 帕拉米隆.
- 帕拉米隆因其特性而具有各种应用的潜力.
研究的目的:
- 通过CRISPR/Cas9技术,对Euglena gracilis进行改造,以增强其对帕米隆的产生.
- 为了研究paramylon在Caenorhabditis elegans中的抗氧化和抗衰老作用.
主要方法:
- 通过CRISPR/Cas9基因编辑,在Euglena gracilis中消除β-1,3-葡萄糖酸化酶.
- 优化生长媒介和碳源,以提高帕拉米龙的产量.
- 使用光散射光谱学评估帕米隆纯度.
- 在体内对Caenorhabditis elegans进行研究,以评估抗氧化和抗衰老特性,包括线粒体功能和基因表达分析.
主要成果:
- 在ldp1突变菌株中,paramylon含量达到68.20% (1.49 g/L).
- 用葡萄糖补充剂增加了帕米隆含量,达到72.92% (1.51 g/L),纯度高.
- 帕拉米隆减少了活性氧物种,增强了抗氧化酶,并改善了C. elegans的抗压能力.
- 帕拉米隆治疗对C. elegans的线粒体信号传递,ATP生产和与长寿相关的基因表达产生了积极的影响.
结论:
- 克里斯普尔/Cas9有效地提高了Euglena gracilis.中的paramylon产量.
- 优化paramylon表现出显著的抗氧化和抗衰老益处,可能通过胰岛素/IGF信号通路和改善线粒体功能.
- 这项研究为大规模的paramylon生产及其治疗应用提供了基础.
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