Ratiometric electrochemical OR gate assay for NSCLC-derived exosomes.

Ratiometric electrochemical OR gate assay for NSCLC-derived exosomes.
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DOI:
10.1186/s12951-023-01833-2
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发表时间:
2023-03-24
影响因子:
10.2
通讯作者:
Huang, Lin
Huang, Lin
中科院分区:
工程技术1区
文献类型:
--
作者:
Meng, Fanyu;Yu, Wenjun;Niu, Minjia;Tian, Xiaoting;Miao, Yayou;Li, Xvelian;Zhou, Yan;Ma, Lifang;Zhang, Xiao;Qian, Kun;Yu, Yongchun;Wang, Jiayi;Huang, Lin

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非小细胞肺癌(NSCLC)是LC最常见的病理类型,是癌症死亡的主要原因。循环外泌体已成为诊断NSCLC的有价值的生物标志物,而目前用于外泌体检测的电化学测定的性能受到不令人满意的灵敏度和特异性的限制。在这里,我们将比率生物传感器与OR逻辑门集成,以形成用于临床血清样品中外泌体的表面蛋白质谱分析的测定。通过使用特异性适体识别临床验证的生物标志物(EpCAM和CEA),该检测试剂盒能够超灵敏地检测复杂血清样品中痕量水平的NSCLC来源的外泌体(102-108 μ L−1线性范围内的15.1 μ L − 1颗粒)。该检测方法在NSCLC的准确诊断、分期和预后方面优于六种血清生物标志物的分析,即使在早期(I期)也显示出93.3%的诊断灵敏度。该测定提供了用于外泌体定量的先进工具,并促进了用于临床癌症管理的基于外泌体的液体活检。在线版本包含补充材料,可通过10.1186/s12951-023-01833-2获得。
Non-small cell lung cancer (NSCLC) is the most common pathological type of LC and ranks as the leading cause of cancer deaths. Circulating exosomes have emerged as a valuable biomarker for the diagnosis of NSCLC, while the performance of current electrochemical assays for exosome detection is constrained by unsatisfactory sensitivity and specificity. Here we integrated a ratiometric biosensor with an OR logic gate to form an assay for surface protein profiling of exosomes from clinical serum samples. By using the specific aptamers for recognition of clinically validated biomarkers (EpCAM and CEA), the assay enabled ultrasensitive detection of trace levels of NSCLC-derived exosomes in complex serum samples (15.1 particles μL−1 within a linear range of 102–108 particles μL−1). The assay outperformed the analysis of six serum biomarkers for the accurate diagnosis, staging, and prognosis of NSCLC, displaying a diagnostic sensitivity of 93.3% even at an early stage (Stage I). The assay provides an advanced tool for exosome quantification and facilitates exosome-based liquid biopsies for cancer management in clinics. The online version contains supplementary material available at 10.1186/s12951-023-01833-2.
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