盖莱克-9作为淋巴细胞通过结合H血组的葡萄糖来对内皮粘附的潜在调节剂
Eugenia M Rapoport1, Ivan M Ryzhov1, Ekaterina V Slivka1
1Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry RAS, 16/10 Miklukho-Maklaya Str., Moscow 117997, Russia.
Biomolecules
|August 26, 2023
概括
加勒-9通过H抗原调解淋巴细胞与内皮细胞的粘附. 这种相互作用需要在内皮细胞上特定的H (2型) 三糖结构,以便有效地招募免疫细胞.
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:
- 白血球对炎症组织的招募对于免疫反应至关重要.
- galectins 和 galectin-9 一样,也参与了细胞粘附过程.
- 内皮细胞表达ABH血型抗原,这是加勒素的潜在结合部位.
研究的目的:
- 通过H抗原调查加勒-9在调解淋巴细胞通过内皮细胞粘附中的作用.
- 为了确定这种相互作用所需的特定的甘氨酸结构.
主要方法:
- 使用了Jurkat细胞 (淋巴细胞) 和EA.hy 926细胞 (内皮细胞).
- 操纵EA.hy 926细胞的化,以改变H抗原的表达.
- 使用合成H (2型) 三糖甘油脂恢复粘附.
主要成果:
- 朱尔卡特细胞对EA.hy 926细胞的粘附取决于H抗原的存在.
- 内皮细胞的去化消除了淋巴细胞的粘附.
- 用H (2型) 三糖恢复化,恢复了可比的粘附水平.
结论:
- 加勒-9与内皮细胞上的H (2型) 三糖化合物结合,调解了淋巴细胞的粘附.
- 这种相互作用对于白细胞在炎症反应中的招募至关重要.
- 三糖化H甘氨酸结构足以进行加勒-9介导的粘附.
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