新技術實現B細胞受體序列的高通量測序
作者:
小柯機器人發布時間:2019/11/29 14:51:29
近日,美國範德比爾特大學醫學中心Ivelin S. Georgiev及其研究組研發的新技術,實現對B細胞受體(BCR)序列針對抗原特異性的高通量測序。2019年11月28日,國際知名學術期刊《細胞》在線發表了這一成果。
研究人員提出了LIBRA-seq(通過測序將B細胞受體與抗原特異性連接)的技術,其可將成對的重鏈和輕鏈BCR序列與其同源抗原特異性進行高通量映射。B細胞與一組DNA條形碼的抗原混合,這樣抗原條形碼和BCR序列均可通過單細胞下一代測序回收。使用LIBRA-seq,研究人員繪製了來自兩個HIV感染者的數千個B細胞的抗原特異性。
這些結果證實了對許多HIV和流感特異性抗體的預測特異性,包括已知和新型的廣泛中和抗體。LIBRA-seq將成為針對多種抗原靶標的抗體發現和疫苗開發工作的不可或缺的工具。
據悉,BCR測序是用於研究對感染和疫苗接種的免疫反應的強大工具,但它提供的BCR抗原特異性信息有限。
附:英文原文
Title: High-Throughput Mapping of B Cell Receptor Sequences to Antigen Specificity
Author: Ian Setliff, Andrea R. Shiakolas, Kelsey A. Pilewski, Amyn A. Murji, Rutendo E. Mapengo, Katarzyna Janowska, Simone Richardson, Charissa Oosthuysen, Nagarajan Raju, Larance Ronsard, Masaru Kanekiyo, Juliana S. Qin, Kevin J. Kramer, Allison R. Greenplate, Wyatt J. McDonnell, Barney S. Graham, Mark Connors, Daniel Lingwood, Priyamvada Acharya, Lynn Morris, Ivelin S. Georgiev
Issue&Volume: November 28, 2019
Abstract: B cell receptor (BCR) sequencing is a powerful tool for interrogating immune responsesto infection and vaccination, but it provides limited information about the antigenspecificity of the sequenced BCRs. Here, we present LIBRA-seq (linking B cell receptorto antigen specificity through sequencing), a technology for high-throughput mappingof paired heavy- and light-chain BCR sequences to their cognate antigen specificities.B cells are mixed with a panel of DNA-barcoded antigens so that both the antigen barcode(s)and BCR sequence are recovered via single-cell next-generation sequencing. Using LIBRA-seq,we mapped the antigen specificity of thousands of B cells from two HIV-infected subjects.The predicted specificities were confirmed for a number of HIV- and influenza-specificantibodies, including known and novel broadly neutralizing antibodies. LIBRA-seq willbe an integral tool for antibody discovery and vaccine development efforts againsta wide range of antigen targets.
DOI: 10.1016/j.cell.2019.11.003
Source: https://www.cell.com/cell/fulltext/S0092-8674(19)31224-3
Cell:《細胞》,創刊於1974年。隸屬於細胞出版社,最新IF:36.216