相关实验视频
Updated: Jan 18, 2026

08:43
OLIgo Mass Profiling OLIMP of Extracellular Polysaccharides
Published on: June 20, 2010
14.1K
超声波提取,结构特征,和免疫活性的多糖类从西西木 jambos (L.) 阿尔斯顿阿尔斯顿 (L.)
Shao-Qian Wang1, Hui Yuan1, Hao-Qiang Qin1
1College of Food Science and Technology, Shanghai Ocean University, Shanghai, China.
Chemistry & biodiversity
|September 8, 2025
概括
提取和分析了西西木山果的多糖 (PSJAP-5). 这种化合物通过增强巨细胞功能和激活关键免疫信号通路来表现出显著的免疫调节活性.
科学领域:
- 自然产品化学 自然产品化学
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 多糖是复杂的碳水化合物,具有多样化的生物活动.
- 一个植物物种Syzygium jambos是新型生物活性化合物的潜在来源.
- 了解植物性多糖的免疫调节潜力对于治疗开发至关重要.
研究的目的:
- 为了提取和描述来自Syzygium jambos的多糖类 (PSJAP-5).
- 研究PSJAP-5对巨细胞的体外免疫调节作用.
- 阐明PSJAP-5免疫增强性质的潜在分子机制.
主要方法:
- 响应表面方法用于优化多糖提取.
- 结构特征包括分子量测定和单糖组成分析.
- 试验室试验评估了巨细胞的增殖,细胞分裂,氧化 (NO) 和活性氧物种 (ROS) 的产生,以及细胞因子的释放 (IL-6,TNF-α,IL-1β).
- 信号通路分析涉及使用托尔样受体4 (TLR4),核因子-卡帕B (NF-κB) 和基激活蛋白激酶 (MAPK) 抑制剂,以及西式涂抹来评估蛋白质酸化.
主要成果:
- 提取PSJAP-5成功,平均分子量为58,102Da,主要由银河糖,阿拉伯糖和银河酸组成.
- PSJAP-5显著促进了巨细胞的增殖和细胞分裂.
- 根据剂量,PSJAP-5刺激了NO和ROS的产生,并增加了益炎性细胞因子 (IL-6,TNF-α,IL-1β) 的释放.
- PSJAP-5的免疫调节作用通过TLR4,NF-κB和MAPK信号通路进行调节,由抑制剂研究和p38和IκBα的酸化变化所证实.
结论:
- PSJAP-5表现出强大的免疫调节活性.
- PSJAP-5通过通过TLR4,NF-κB和MAPK通路激活巨细胞来增强先天免疫反应.
- PSJAP-5具有作为免疫相关疾病治疗剂的潜力.
关键词:
艾尔斯顿 (Alston) 的西西 (Syzygium jambos (L.) Alston) 是一个葡萄树.免疫活性 免疫活性聚糖类是一种多糖类.表面响应的表面响应.结构性特征的结构性特征.更多相关视频
11:49Sequencing of Plant Wall Heteroxylans Using Enzymic, Chemical Methylation and Physical Mass Spectrometry, Nuclear Magnetic Resonance Techniques
Published on: March 24, 2016
8.0K
11:06Structural Characterization of Mannan Cell Wall Polysaccharides in Plants Using PACE
Published on: October 16, 2017
10.2K
相关概念视频
Biosynthesis of Polysaccharides
561
Polysaccharides such as glycogen and starch are synthesized from nucleoside diphosphate sugars, primarily uridine diphosphate glucose (UDPG) and adenosine diphosphate glucose (ADPG). These activated glucose donors act as key intermediates in carbohydrate metabolism and biosynthesis. UDPG primarily involves glycogen synthesis in animals and many bacteria, while ADPG plays a fundamental role in starch synthesis in plants and certain bacteria.UDPG is formed when glucose-1-phosphate reacts with...
561
Cellulose and Pectic Polysaccharides
4.6K
Every plant cell has a cell wall that protects the cell, provides structural support, and gives the cell shape. Cellulose, the main structural component of the plant cell wall, makes up over 30% of plant matter. It is the most abundant organic compound on earth. Cellulose is an unbranched polysaccharide composed of linear chains of glucose molecules linked by β (1→4) glycosidic bonds.
As a cell matures, its cell wall specializes according to its type. For example, the...
As a cell matures, its cell wall specializes according to its type. For example, the...
4.6K