相关实验视频

Updated: May 30, 2025

Measurements of Physiological Stress Responses in C. Elegans

Measurements of Physiological Stress Responses in C. Elegans

Published on: May 21, 2020

外源LEA蛋白的表达通过减少氧化应激来增强哺乳动物细胞的耐寒性

Martina Lo Sterzo¹, Domenico Iuso¹, Luca Palazzese¹

¹Department of Veterinary Medicine, University of Teramo, Via Renato Balzarini 1, 64100, Teramo, Italy.

Scientific reports

|January 27, 2025

概括

来自植物的晚期胚胎生成丰富 (LEA) 蛋白质为哺乳动物细胞提供了显著的寒冷保护,与维生素E相当. 这些蛋白质通过减少冷暴露期间的氧化应激和DNA损伤来维持细胞活力和代谢功能.

科学领域:

分子生物学分子生物学
细胞生物学细胞生物学
生物化学生物化学

背景情况:

哺乳动物细胞的抗寒性对于医学应用至关重要.
晚期胚芽生殖丰富 (LEA) 蛋白质在植物和极端动物中赋予寒冷耐受性.
维生素E是一种已知的抗氧化剂,具有保护性细胞功能.

研究的目的:

研究哺乳动物细胞中外源LEA蛋白表达的防寒作用.
为了比较LEA蛋白与维生素E在缓解感冒压力的有效性.
阐明LEA蛋白质介导的抗寒性背后的分子机制.

主要方法:

哺乳动物细胞系中植物性LEA蛋白的外源表达.
评估细胞活力和代谢活动在寒冷后的压力和回暖后.
测量线粒体应激,反应性氧物种 (ROS) 生产,细胞骨稳定性和DNA损伤.

主要成果:

表达LEA蛋白质的哺乳动物细胞表现出与维生素E相似的防寒效果.
在暴露于寒冷后,LEA蛋白保留了细胞活力和代谢功能.
简单的蛋白质减轻了寒冷诱导的线粒体压力和ROS过度生产,增强了细胞骨的稳定性并减少了DNA损伤.

结论:

植物性LEA蛋白具有强大的抗氧化特性,在哺乳动物细胞中提供显著的防寒保护.
LEA蛋白提供了一个有希望的替代品或补充维生素E,以增强细胞冷耐受性.
这项研究突出了利用极端类蛋白质在冷和冷藏中的生物医学应用的潜力.

关键词:

抗氧化剂是一种抗氧化剂.细胞细胞细胞冰冷保护冰冷保护晚期胚胎发生丰富的蛋白质晚期胚胎发生

更多相关视频

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

Using Caenorhabditis elegans as a Model System to Study Protein Homeostasis in a Multicellular Organism

Published on: December 18, 2013

Strategies for Study of Neuroprotection from Cold-preconditioning

Strategies for Study of Neuroprotection from Cold-preconditioning

Published on: September 2, 2010

相关概念视频

Responses to Heat and Cold Stress

Responses to Heat and Cold Stress

Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.

Introduction to Plant Diversity

Introduction to Plant Diversity

From Water to Land

Leaky Scanning

Leaky Scanning

During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...