SuPAR通过快速改变 podocyte 功能来调解病毒反应蛋白尿症.
Changli Wei1, Prasun K Datta2, Florian Siegerist3,4
1Department of Medicine, Rush University Medical Center, Chicago, IL, USA. changli_wei@rush.edu.
Nature communications
|July 21, 2023
概括
溶性泌尿酶受体 (suPAR) 和蛋白尿的升高与COVID-19的严重程度有关. 这项研究确定病毒反应蛋白尿 (VRP) 是一种与生俱来的免疫机制,涉及suPAR和podocyte整合素,提供新的治疗点.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
背景情况:
- 溶性尿素酶受体 (suPAR) 和蛋白尿的升高在严重的COVID-19中很常见.
- 将病毒感染与损伤联系在一起的确切机制,特别是蛋白尿,需要进一步阐明.
- 不同的SARS-CoV-2变种可能表现出不同的致病机制.
研究的目的:
- 描述一种由病毒感染引起的新型蛋白尿症.
- 调查suPAR和SARS-CoV-2尖端蛋白在诱导蛋白尿症中的作用.
- 探索针对suPAR-整蛋白通路的潜在治疗干预措施.
主要方法:
- 利用非洲绿色和表达suPAR的小鼠模型进行SARS-CoV-2的注射和尖端蛋白暴露.
- 使用suPAR抗体和SARS-CoV-2疫苗接种来评估蛋白尿的阻塞.
- 分析不同变异的大量COVID-19患者中的suPAR水平和蛋白尿.
主要成果:
- 接种SARS-CoV-2疫苗增加了suPAR水平,并在子中引起了淋巴细胞病变.
- 在小鼠中吸入的SARS-CoV-2尖端S1蛋白诱导蛋白尿症,可通过suPAR抗体或疫苗接种预防.
- 在非Omicron的COVID-19感染中观察到suPAR和蛋白尿之间的逐步关联,但不是Omicron.
结论:
- 病毒反应蛋白尿 (VRP) 是一种与生俱来的免疫机制,涉及suPAR和podocyte整合素.
- 在SARS-CoV-2变体的尖端蛋白和它们与细胞整合素的相互作用之间存在生物物理和功能上的差异.
- 针对suPAR-integrin轴为病毒诱导的损伤提供了一个潜在的治疗策略.
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