开发了来自Lamprey的抗体来对抗人类血型抗原
Pascal B Kunz1,2, Ea Kristine Clarisse Tulin1, Akul Y Mehta1
1Department of Surgery, Beth Israel Deaconess Medical Center, National Center for Functional Glycomics, Harvard Medical School, Boston, MA.
研究人员利用海的免疫力开发了新的单克隆抗体 (mAbs),以检测红细胞 (RBC) 上的特定碳水化合物抗原. 这些新型试剂向H抗原和N-乙酸氨酸胺 (LacNAc),有助于糖甘研究.
科学领域:
- 葡萄糖科学 葡萄糖科学
- 免疫学 免疫学 免疫学
- 血液学 血液学 血液学
背景情况:
- 像单克隆抗体 (mAbs) 这样的敏感和特定的糖甘结合试剂的稀缺性在糖糖科学中构成了挑战.
- 检测和分离特定的甘氨酸,特别是基于碳水化合物的红细胞 (RBC) 抗原,需要强大的工具.
研究的目的:
- 开发和表征能够与基于碳水化合物的红细胞抗原结合的新型单克隆抗体 (mAbs),包括ABO (H) 抗原.
- 为了利用海洋的独特免疫系统产生高亲和力,糖甘特异性抗体.
主要方法:
- 用红细胞免疫接种海.
- 使用完整的红细胞和定制微阵列开发针对性抗体丰富和查过程.
- 通过甘氨酸微阵列,Luminex平台,西部斑块和流细胞测量进行甘氨酸结合分析.
- 通过抑制试验和序列同质分析进行亲和度测量和机械洞察.
主要成果:
- 鉴定了两个新型的mAbs,A_25和A_39,具有对H抗原和终端N-乙酸盐胺 (Galβ1-4GlcNAc,LacNAc) 的特异性.
- 两种mAbs在所有ABO血型中都与红细胞结合,在O血型红细胞中观察到的结合最强.
- 测量了纳米级范围的亲和力,表明开发的mAbs.的高特异性和灵敏性.
结论:
- 海的免疫系统是一个有效的平台,可以产生特定于糖甘的mAbs.
- 开发的mAbs (A_25和A_39) 是用于研究人类组织中H抗原和LacNAc表达的有价值的试剂.
- 未来的应用包括这些mAbs的分子工程,以对其他研究不足的血液组抗原进行特异性.
更多相关视频
09:07Single-cell Screening Method for the Selection and Recovery of Antibodies with Desired Specificities from Enriched Human Memory B Cell Populations
Published on: August 22, 2019
11:10Antibody Binding Specificity for Kappa (Vκ) Light Chain-containing Human (IgM) Antibodies: Polysialic Acid (PSA) Attached to NCAM as a Case Study
Published on: June 29, 2016
相关概念视频
Blood Typing
Antigens are protein molecules that reside on the surface of red blood cells (RBCs). The ABO and Rh blood typing systems target...
Development of Immunocompetence
The initial cells that migrate from the fetal thymus settle within the skin and epithelial tissues lining the mouth, digestive tract, and in females, the uterus and vagina. These cells, including skin-based dendritic cells, serve as antigen-presenting cells, playing a key role in T cell activation.
Subsequent T...
The ABO Blood Group
Antigens in the ABO Blood Group System
Antigens are substances that can trigger an immune response, leading to the production of antibodies. In the ABO blood group system,...
Blood Transfusion and Agglutination
History
The history of blood transfusion dates back to the 17th century, when early attempts were made in animals. In 1818 James Blundell, a British doctor, performed the first successful human blood transfusion. Later in 1900, Karl...
Hybridoma Technology
Hybridoma Selection
Commonly used fusion techniques — electroporation,...
