NT1-Tau Is Increased in CSF and Plasma of CJD Patients, and Correlates with Disease Progression.

NT1-Tau Is Increased in CSF and Plasma of CJD Patients, and Correlates with Disease Progression.
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DOI:
10.3390/cells10123514
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发表时间:
2021-12-13
期刊:
影响因子:
6
通讯作者:
Walsh DM
Walsh DM
中科院分区:
生物学2区
文献类型:
--
作者:
Mengel D;Mok TH;Nihat A;Liu W;Rissman RA;Galasko D;Zetterberg H;Mead S;Collinge J;Walsh DM

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本研究调查了克雅氏病 (CJD) 患者体液中不同形式 tau 的诊断和预后潜力。细胞外 tau 具有分子异质性,使用超灵敏定制 Simoa 检测 N 末端 (NT1)、中部区域和全长 tau 进行测量。我们评估了健康对照、阿尔茨海默病 (AD) 患者和克雅氏病患者的横截面脑脊液和血浆。然后,我们在纵向 CJD 队列 (n = 145) 中评估了表现最佳的 tau 检测 (NT1-tau) 与临床严重程度和功能衰退(使用 MRC 朊病毒疾病评定量表)的相关性。在一项横断面研究中,使用 NT1 和中区 Simoa 检测在 CSF 中测量 tau,将 CJD (n = 15) 与 AD (n = 18) 和对照 (n = 21) 分开,其诊断准确性 (AUC:0.98–1.00) 与神经丝轻链 (NfL;AUC:0.96–0.99) 相当或更好。在血浆中,与 AD (n = 15) 和对照组 (n = 15) 相比,CJD (n = 5) 中 NT1 测量的 tau 蛋白升高。此外,在克雅氏病血浆(n = 145)中,NT1-tau 水平与疾病进展的阶段和速率相关,并且对临床进展的影响被 PRNP 密码子 129 修改。我们的研究结果表明,血浆 NT1-tau 有希望作为克雅氏病的微创诊断和预后生物标志物,应该进一步研究其监测疾病进展和治疗反应的潜力。
This study investigates the diagnostic and prognostic potential of different forms of tau in biofluids from patients with Creutzfeldt-Jakob disease (CJD). Extracellular tau, which is molecularly heterogeneous, was measured using ultra-sensitive custom-made Simoa assays for N-terminal (NT1), mid-region, and full-length tau. We assessed cross-sectional CSF and plasma from healthy controls, patients with Alzheimer’s disease (AD) and CJD patients. Then, we evaluated the correlation of the best-performing tau assay (NT1-tau) with clinical severity and functional decline (using the MRC Prion Disease Rating Scale) in a longitudinal CJD cohort (n = 145). In a cross-sectional study, tau measured in CSF with the NT1 and mid-region Simoa assays, separated CJD (n = 15) from AD (n = 18) and controls (n = 21) with a diagnostic accuracy (AUCs: 0.98–1.00) comparable to or better than neurofilament light chain (NfL; AUCs: 0.96–0.99). In plasma, NT1-measured tau was elevated in CJD (n = 5) versus AD (n = 15) and controls (n = 15). Moreover, in CJD plasma (n = 145) NT1-tau levels correlated with stage and rate of disease progression, and the effect on clinical progression was modified by the PRNP codon 129. Our findings suggest that plasma NT1-tau shows promise as a minimally invasive diagnostic and prognostic biomarker of CJD, and should be further investigated for its potential to monitor disease progression and response to therapies.
了解细胞外TAU的复杂性有助于对阿尔茨海默氏病血液筛查的发展。
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