由 FSGS 相关的循环因子诱导的 podocyte 转录组和生物通路的扰乱
Priyanka Rashmi1, Tara K Sigdel1, Dmitry Rychkov1
1Department of Surgery, University of California San Francisco, San Francisco, CA, USA.
Annals of translational medicine
|July 5, 2023
概括
焦点细分型淋巴结核硬化 (FSGS) 的 podocyte 损伤是由可溶性尿激酶型等离子素激活体受体 (suPAR) 和 CD40 自体抗体驱动的. 针对这些因素的新型人类抗体在体外有效地阻止了FSGS的进展.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 焦点细分型血小板硬化 (FSGS) 导致蛋白尿和功能衰竭,移植后复发率高 (rFSGS).
- 循环因素,如可溶性尿激酶类型等离子素激活剂受体 (suPAR) 和CD40自身抗体 (CD40autoAb),都与FSGS的发病有关.
- 瘤亡因子 (TNF) 路径激活是FSGS中疑似下游机制.
研究的目的:
- 调查suPAR和CD40autoAb在FSGS介导的细胞损伤中的作用.
- 评估使用新型人类抗体阻断suPAR和CD40通路的治疗潜力.
- 为了确定FSGS中激活的独特的炎症途径.
主要方法:
- 在实验室中使用了人体 podocyte 损伤模型,测量了 Actin 应激纤维损失.
- 从FSGS和对照组中分离出患者衍生的CD40autoAb.
- 测试了新型人类抗-uPAR和抗-CD40抗体,以测试它们减轻 podocyte 损伤的能力.
- 使用全人类基因组微阵列进行的转录形状分析是在用患者衍生抗体治疗的 podocytes 上进行的.
主要成果:
- 在FSGS患者的血清诱导下细胞损伤中介于CD40和suPAR.
- 人类抗uPAR和抗CD40抗体成功地阻断了FSGS相关的细胞损伤.
- 转录组分析揭示了与FSGS损伤相关的独特炎症途径,与CD40autoAb和suPAR不同.
结论:
- 在FSGS中的足细胞损伤是由CD40和suPAR驱动的.
- 使用新型人体抗体对suPAR和CD40通路的向阻塞可以抑制FSGS中的 podocyte损伤.
- 确定了对FSGS进展有贡献的新基因和途径.
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