通过调节脂质双层来提高细胞模拟剂的透应激耐受性
Shaoying Dai1, Tengda Wang2, Jie Cui3
1CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China; University of Chinese Academy of Sciences, Beijing 100190, PR China.
Journal of colloid and interface science
|August 26, 2024
概括
多德-β-d-葡萄皮化物 (DG) 和聚乙烯糖醇 (PEG) 在透应激下增强细胞生存. 这些化合物在较低度下比糖氨酸贝他因 (GB) 更有效,为细胞保护提供了一种新的方法.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
背景情况:
- 维持细胞平衡对于生物体在透应激期间的生存至关重要.
- 甘氨酸贝他因 (GB) 是一种天然的溶解物,但其产量和有效性有限.
- 需要有效的策略来增强透应激耐受性.
研究的目的:
- 为了研究二甲基-β-d-葡萄糖酸盐 (DG) 和聚乙烯糖醇 (PEG) 在改善透应激耐受性的潜力.
- 为了比较DG和PEG与糖氨酸贝 (GB) 的疗效.
- 阐明DG和PEG增强细胞适应的机制.
主要方法:
- 利用巨型单囊 (GUVs) 作为细胞模型来评估膜变化.
- 采用格拉姆阴性大肠杆菌作为生物模型来评估生存率.
- 使用不同糖度的诱导性透应激.
- 量化了DG和PEG对GUV和细菌存活的影响.
主要成果:
- DG和PEG在GUV中引起了微小的尺寸和形状变化.
- 在低和高的条件下,DG和PEG显著增加了细菌生存率.
- 在比GB低100倍的度下,DG和PEG是有效的.
- 由于DG插入或PEG吸附在脂质双层中,观察到增强的膜透性.
结论:
- 多德-β-d-葡萄皮化物 (DG) 和聚乙烯糖醇 (PEG) 是有效的外源剂,可增强透应激耐受性.
- DG和PEG为增加生物体的适应提供了一个更有效和更容易的替代品,而不是糖氨酸贝 (GB).
- 这些发现为改善细胞抵抗透挑战提供了一种新的策略.
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