分离方法影响来自犬骨质母细胞和骨髓瘤细胞的细胞外囊制剂中的甘氨酸模式
Daniela Cortes Galvez1, Silvio Kau-Strebinger1, Simone Gabner1
1Department of Biomedical Sciences and Pathobiology, Institute of Morphology University of Veterinary Medicine Vienna Vienna Austria.
Journal of extracellular biology
|February 11, 2026
概括
研究来自狗骨髓瘤和骨质母细胞的细胞外囊泡 (EV) 显示,分离方法显著改变了它们的甘氨酸配置文件. 狗骨质细胞EV显示了更高的特异糖水平,突出显示了依赖于方法的EV特征.
科学领域:
- 生物化学 生物化学
- 细胞生物学 细胞生物学
- 在瘤学瘤学.
背景情况:
- 细胞外囊泡 (EVs) 通过转移生物活性分子来调解细胞间的通信.
- 电动体在生理和病理过程中发挥作用,包括癌症的进展.
- EV糖化对受体细胞的附着和吸收产生影响.
研究的目的:
- 为了研究从狗骨髓瘤 (OS) 细胞和狗骨质母细胞中获得的EVs的糖概况.
- 为了比较不同分离方法 (超离心,尺寸排除色谱,沉套件) 对EV糖化模式的影响.
- 分析来自癌症和非癌症犬细胞的EV之间的糖化差异.
主要方法:
- 在使用超离心法 (UC),尺寸排除色谱法 (SEC) 和商用沉套件 (TEI) 来从狗骨和骨质细胞系中分离出EV.
- 使用莱克斑点分析了糖甘配置文件.
- 在纯度,产量和蛋白质糖化模式方面比较了EV制剂.
主要成果:
- 分离方法导致异质的EV糖化模式,TEI套件显示最少的可重复性.
- 在骨质细胞EV中,SEC始终显示出高水平的特定糖,包括UC和TEI制剂中缺少的独特糖蛋白.
- 与骨质细胞 EV 相比,骨髓瘤 EV 呈现出糖蛋白的相对减少,并且特定的糖在 EV 中比细胞溶解物更丰富.
结论:
- 选择EV分离方法对观察到的EV特征,特别是糖化模式,产生重大影响.
- 狗骨髓瘤和骨质母细胞的EV之间存在显著的糖概况差异.
- 为了准确的生物学解释,EV糖化分析需要仔细考虑隔离技术.
更多相关视频
相关概念视频
01:24Role of Affect in Interpersonal Attraction
237
Affect plays a crucial role in shaping interpersonal evaluations and perceptions. Emotions influence how individuals judge and respond to others, often determining whether interactions are viewed positively or negatively. This effect can manifest directly through interactions with the person in question or indirectly via associations with unrelated emotional experiences.Direct Effects of Affect on AttractionAffect directly influences interpersonal attraction when a person’s behavior...
237
01:29The Influence of Affect on Cognition
301
Positive affect significantly influences cognitive processes, including evaluation, memory, creativity, and social judgments. Compared to negative affect, positive emotional states promote more favorable interpretations of stimuli, cognitive flexibility, and heuristic processing. These effects highlight emotions' powerful role in shaping how individuals perceive, remember, and interact with the world.Influence on Evaluation and AttributionWhen individuals experience positive affect, they are...
301
01:29The Influence of Cognition on Affect
226
Cognition plays a pivotal role in shaping emotional experiences, as demonstrated by Schachter and Singer’s two-factor theory of emotion. According to this model, emotion arises from a combination of physiological arousal and cognitive interpretation. The body’s physiological response to stimuli is ambiguous and only gains emotional significance through cognitive labeling. For instance, an increased heart rate and adrenaline surge while standing near an attractive person may be...
226
01:20Overview Of Cell Separation And Isolation
7.7K
Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.
7.7K
02:27Background and Environment Affect Phenotype
7.7K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
7.7K
01:42The Extracellular Matrix
89.4K
Overview
89.4K