Detection of membrane-bound and soluble antigens by magnetic levitation.

Detection of membrane-bound and soluble antigens by magnetic levitation.
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DOI:
10.1039/c7lc00402h
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发表时间:
2017-10-11
期刊:
影响因子:
6.1
通讯作者:
Ghiran I
Ghiran I
中科院分区:
工程技术1区
文献类型:
--
作者:
Andersen MS;Howard E;Lu S;Richard M;Gregory M;Ogembo G;Mazor O;Gorelik P;Shapiro NI;Sharda AV;Ghiran I

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磁悬浮是一种用于测量悬浮在顺磁场中的物体的密度和磁性的技术。我们描述了一种新的磁悬浮为基础的方法,可以特异性地检测细胞膜结合的和可溶性抗原的可测量的变化,悬浮高度的抗体包被的珠和抗原复合物的形成所导致的。我们证明了我们的方法能够灵敏地检测血液中发现的一系列膜结合和可溶性抗原,包括T细胞抗原CD 3,嗜酸性粒细胞抗原Siglec-8,红细胞抗原CD 35和RhD,红细胞结合的EB病毒颗粒和可溶性IL-6,并通过流式细胞术和免疫荧光显微镜平行进行验证结果。此外,采用便宜的单透镜、手动聚焦、支持wifi的相机,我们扩展了我们的方法的便携性,以用于其作为护理点诊断测定的潜在用途。
Magnetic levitation is a technique for measuring the density and the magnetic properties of objects suspended in a paramagnetic field. We describe a novel magnetic levitation-based method that can specifically detect cell membrane-bound and soluble antigens by measurable changes in levitation height that result from the formation of antibody-coated bead and antigen complex. We demonstrate our method's ability to sensitively detect an array of membrane-bound and soluble antigens found in blood, including T-cell antigen CD3, eosinophil antigen Siglec-8, red blood cell antigens CD35 and RhD, red blood cell-bound Epstein-Barr viral particles, and soluble IL-6, and validate the results by flow cytometry and immunofluorescence microscopy performed in parallel. Additionally, employing an inexpensive, single lens, manual focus, wifi-enabled camera, we extend the portability of our method for its potential use as a point-of-care diagnostic assay.
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