大骨B细胞阻断了脂酶A2受体与其抗体之间的结合
Zixin Feng1, Fu-Sheng Guo2, Qian Wang3
1Renal Division, Peking University First Hospital, Beijing, China; Institute of Nephrology, Peking University, Beijing, China; Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, China; Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China; Research Units of Diagnosis and Treatment of Immune-mediated Kidney Diseases, Chinese Academy of Medical Sciences, Beijing, China.
研究人员选了4000多种化合物,以寻找脂酶A2受体 (PLA2R) 抗体的抑制剂,这是膜性病的关键因素. 巨骨B显示有前途,减少PLA2R-抗体结合,并保护人体细胞免受伤害.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 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:
- 抗脂酶A2受体 (PLA2R) 抗体在一次性膜性病 (MN) 中具有病原性.
- 准PLA2R-抗体相互作用为MN提供了一个潜在的治疗策略.
研究的目的:
- 为了确定PLA2R-抗体相互作用的小分子抑制剂.
- 评估已识别的抑制剂在保护人体受体细胞免受损伤方面的有效性.
主要方法:
- 与酶相关的免疫吸收试验 (ELISA) 选超过4000个小分子以检测PLA2R-抗体结合抑制.
- 表面等离子体共振 (SPR) 来评估抑制剂亲和力和抗PLA2RIgG结合.
- 在体外测试 (CCK-8,伤口愈合,西部斑,免疫光) 使用暴露于MN血和/或抑制剂的人类受体细胞.
主要成果:
- 15种化合物抑制了PLA2R-抗体相互作用>20%.
- 麦克罗卡尔巴B证明了强大的,剂量依赖的PLA2R-抗体结合抑制 (~30%),与已知的抑制剂相当.
- 大手B结合的PLA2R (KD = 1.47 × 10-6 M),但不是抗PLA2R的IgG.
- 大手B保护人体细胞免受MN等离子体诱导的损伤,包括减少素表达和改善活力和迁移.
结论:
- 小分子,特别是大手B,可以有效地抑制MN的致病性PLA2R-抗体相互作用.
- 在实验室中,B大手通过减轻细胞损伤来证明其治疗潜力.
- 需要进一步研究Macrocarpal B作为膜性病的治疗方法.
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