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客戶采用我司鏈霉親和素磁珠(PuriMag G-strep)偶聯(lián)biotin修飾的糖基

Influenza Virus Precision Diagnosis and Continuous Purification Enabled by Neuraminidase-Resistant Glycopolymer-Coated Microbeads

Gefei Li, Wenxiao Ma, Juan Mo, Boyang Cheng, Shin-ichiro Shoda, Demin Zhou*, and Xin-Shan Ye*
Cite this: ACS Appl. Mater. Interfaces 2021, 13, 39, 46260–46269
Publication Date:September 22, 2021

https://doi.org/10.1021/acsami.1c11561

Abstract
Rapid diagnosis and vaccine development are critical to prevent the threat posed by viruses. However, rapid tests, such as colloidal gold assays, yield false-negative results due to the low quantities of viruses; moreover, conventional virus purification, including ultracentrifugation and nanofiltration, is multistep and time-consuming, which limits laboratory research and commercial development of viral vaccines. A rapid virus enrichment and purification technique will improve clinical diagnosis sensitivity and simplify vaccine production. Hence, we developed the surface-glycosylated microbeads (glycobeads) featuring chemically synthetic glycoclusters and reversible linkers to selectively capture the influenza virus. The surface plasmon resonance (SPR) evaluation indicated broad spectrum affinity of S-linked glycosides to various influenza viruses. The magnetic glycobeads were integrated into clinical rapid diagnosis, leading to a 30-fold lower limit of detection. Additionally, the captured viruses can be released under physiological conditions, delivering purified viruses with >50% recovery and without decreasing their native infectivity. Notably, this glycobead platform will facilitate the sensitive detection and continuous one-step purification of the target virus that contributes to future vaccine production.
快速診斷和疫苗開發(fā)對于預防病毒構成的威脅至關重要。然而，由于病毒數量少，快速檢測（如膠體金檢測）會產生假陰性結果；此外，包括超速離心和納濾在內的常規(guī)病毒純化是多步驟且耗時的，這限制了病毒疫苗的實驗室研究和商業(yè)開發(fā)?？焖俨《靖患图兓夹g將提高臨床診斷的敏感性并簡化疫苗生產。因此，我們開發(fā)了具有化學合成糖簇和可逆接頭的表面糖基化微珠（糖珠），以選擇性地捕獲流感病毒。表面等離子共振 (SPR) 評估表明 S-連接糖苷對各種流感病毒具有廣譜親和力。磁性糖珠被整合到臨床快速診斷中，導致檢測下限降低 30 倍。此外，捕獲的病毒可以在生理條件下釋放，以> 50％的回收率提供純化的病毒，并且不會降低其天然傳染性。值得注意的是，這個糖珠平臺將促進目標病毒的靈敏檢測和連續(xù)一步純化，有助于未來的疫苗生產。

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