探索与人乳寡糖和血液组抗原的加列相互作用,确定了BGA6作为功能性加列-4连接体
Alejandro J Cagnoni1, Mora Massaro2, Anabela M Cutine1
1Laboratorio de Glicómica Funcional y Molecular, Programa de Glicoinmunología, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina; Laboratorio de Glicomedicina, Programa de Glicoinmunología, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
The Journal of biological chemistry
|July 15, 2024
概括
人类胆素表现出与人乳寡糖和血型抗原的特定结合. 盖莱克-4的使用方法
科学领域:
- 葡萄糖生物学 葡萄糖生物学
- 免疫学 免疫学 免疫学
- 生物化学 生化学
背景情况:
- 盖लेक्ट因是具有多种生物作用的糖结合蛋白.
- 与人乳寡糖化物 (HMO) 和血型抗原的特定的加勒相互作用尚未完全理解.
研究的目的:
- 为了研究人类质素 (Gal-1, -3, -4, -7, -12) 的糖结合特异性.
- 使用实验和计算方法探索与人乳寡糖和血型抗原的相互作用.
主要方法:
- 利用了实验和计算技术的组合.
- 评估了被选中的人类胆素与各种寡糖的结合 afinities.
- 使用和转移差核磁共振验证了Gal-4与A血型抗原四糖6 (BGA6) 的结合.
主要成果:
- 盖列-1和-7对Lac/LacNAc残留物和已知的基化甘氨酸具有差异性亲和力.
- 盖莱克-3强烈地结合到多-LacNAc结构.
- 盖莱克-12优先认可的3-基化甘氨酸.
- 盖莱克-4证明了与血液组抗原的特定结合,特别是BGA6.6.
- -4-BGA6的相互作用抑制了互白素-6的分泌.
结论:
- 人类胆素对HMO和血液组抗原具有独特的糖结合特异性.
- 加勒-4与BGA6的相互作用具有生物学相关性,并影响炎症反应.
- 研究结果提供了关于加勒素功能和潜在治疗点的见解.
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