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单个尿液细胞外囊泡蛋白学识别了补充受体CD35作为毒症相关的急性损伤的生物标志物
Ning Li1, Tao-Tao Tang1, Menglei Gu2
1Institute of Nephrology, Southeast University School of Medicine, Zhong Da Hospital, Nanjing, China.
Nature communications
|July 29, 2025
概括
与败血症相关的急性损伤 (SA-AKI) 的早期诊断具有挑战性. 一项新的研究确定了单个尿液细胞外囊泡 (CD35-uEV) 上的补充受体CD35,作为SA-AKI诊断和风险分层的有希望的生物标志物.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 生物标志物发现发现
- 分子诊断学 分子诊断
背景情况:
- 败血症相关的急性损伤 (SA-AKI) 是一个重大的临床挑战,患病率和死亡率很高.
- 早期和准确的SA-AKI诊断仍然很困难,阻碍了及时的干预.
研究的目的:
- 在SA-AKI中开发和验证一种用于分析单个尿液细胞外囊泡 (uEVs) 的新方法.
- 为早期SA-AKI诊断和风险分层确定特定的UEV表面蛋白质特征.
主要方法:
- 靠近性依赖条码测定 (PBA) 用于描述单个UEV的表面蛋白质组.
- 在单个UEV (CD35-uEV) 上的补充受体CD35在查,验证和潜在队列中分析了诊断潜力.
主要成果:
- CD35-uEV显示SA-AKI的高诊断准确性 (验证队列中的AUC-ROC为0.89).
- CD35-uEV确定了亚临床AKI (AUC-ROC0.84) 并与AKI严重程度相关.
- CD35-uEV预测了持续的AKI,死亡风险和发展为AKD (AUC-ROC分别为0.77,0.70和0.66).
- 多omics分析表明CD35-uEV来源于受伤的受伤细胞,CD35表达减少.
结论:
- CD35-uEV作为早期SA-AKI诊断的敏感和特定的生物标志物.
- CD35-uEV有助于根据AKI严重程度,持续AKI风险,死亡率和进展到AKD的患者分层.
- 这项研究强调了针对SA-AKI管理中受损的 podocyte 衍生的 uEVs 的潜力.
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