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相关概念视频

Proteoglycans01:05

Proteoglycans

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Glycans, a class of complex heterogeneous molecules, can be covalently attached to proteins to form glycosylated proteins that regulate various physiological and pathological processes. Glycosylated proteins or glycoproteins comprise N-linked and O-linked oligosaccharides. O-glycosylation is the most common type of protein glycosylation. Here, glycans attach to the oxygen atom of the hydroxyl groups of Serine or Threonine residues. O-linked glycosylation occurs later in protein processing,...
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Oligosaccharide Assembly01:24

Oligosaccharide Assembly

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Protein glycosylation starts in the ER lumen and continues in the Golgi apparatus. Glycosyltransferases catalyze the addition of sugar molecules or glycosylation of proteins. Usually, these enzymes add sugars to the hydroxyl groups of selected serine or threonine residues to form O-linked glycans or the amino groups of asparagine residues to form N-linked glycans. Different positions on the same polypeptide chain can contain differently linked glycans.
Multiple sugar molecules that may or may...
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Complement System01:27

Complement System

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The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a...
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相关实验视频

Updated: Jul 12, 2025

Preparation of CD4+ T Cells for Analysis of GD3 and GD2 Ganglioside Membrane Expression by Microscopy
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Preparation of CD4+ T Cells for Analysis of GD3 and GD2 Ganglioside Membrane Expression by Microscopy

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单质化物GM1a可以防止补充剂的攻击.

Henri Wedekind1, Julia Beimdiek1, Charlotte Rossdam1

  • 1Institute of Clinical Biochemistry, Hannover Medical School, Hannover, Germany.

Cell death discovery
|October 25, 2023
PubMed
概括
此摘要是机器生成的。

细胞上的化损失会触发补充攻击. 添加单氨基化物GM1a通过增强补充因子H结合来保护细胞,为补充介导疾病提供了一种新的治疗方法.

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Antibody Binding Specificity for Kappa (Vκ) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study
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Ganglioside Extraction, Purification and Profiling
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相关实验视频

Last Updated: Jul 12, 2025

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Antibody Binding Specificity for Kappa (Vκ) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study
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Ganglioside Extraction, Purification and Profiling
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Ganglioside Extraction, Purification and Profiling

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科学领域:

  • 免疫学 免疫学 免疫学
  • 葡萄糖生物学 葡萄糖生物学
  • 细胞生物学 细胞生物学

背景情况:

  • 补体系统对于天生的免疫至关重要,它需要严格的宿主细胞表面调节,以防止自我损伤.
  • 在小鼠的胎盘细胞中,细胞表面化损失导致了母体补体攻击和妊娠损失.
  • 缺乏化的热原体干细胞 (TSC) 在体外表现出补充敏感性和细胞死亡.

研究的目的:

  • 调查化在调节补体激活中的作用.
  • 为了识别参与补充控制的特定化分子.
  • 探索外源性化分子在预防补充介导细胞损伤方面的治疗潜力.

主要方法:

  • 产生化缺陷的热囊细胞干细胞 (TSCs).
  • 使用多重毛细体凝电泳结合激光诱导光检测 (xCGE-LIF) 的糖脂类分析.
  • 补充剂敏感性和细胞死亡的评估 in vitro 和 in vivo 模型.

主要成果:

  • 单二醇化物GM1a被确定为细胞表面补剂的关键调节者.
  • 外源性施用的GM1a集成到热囊细胞膜中,增加了补充因子H (FH) 的结合,并保护细胞免受补充剂的攻击.
  • 治疗GM1a可以从补充介导的损伤中拯救人类内皮细胞和红细胞,并减少Paroxysmal nocturnal hemoglobinuria (PNH) 红细胞的血液溶解.

结论:

  • 细胞表面化,特别是通过GM1a,对于调节补体激活至关重要.
  • 外源性施用GM1a显示出显著的补充调节潜力.
  • liosides代表了一个有前途的新类的sialoglycotherapeutics针对向补体抑制.