Glycoproteomic Analyses of Influenza A Viruses Using timsTOF Pro MS.

Glycoproteomic Analyses of Influenza A Viruses Using timsTOF Pro MS.
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DOI:
10.1021/acs.jproteome.2c00469
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发表时间:
2023-01-06
影响因子:
4.4
通讯作者:
Wan, Xiu-Feng
Wan, Xiu-Feng
中科院分区:
生物学2区
文献类型:
--
作者:
Wong, Tin Long;Mooney, Brian P.;Cavallero, Gustavo J.;Guan, Minhui;Li, Lei;Zaia, Joseph;Wan, Xiu-Feng

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流感病毒的血凝素和神经氨酸酶糖蛋白中的N-连接糖基化影响抗原和受体结合特性,并且这些蛋白中的位点特异性糖型的精确分析对于理解流感病毒的抗原和免疫原性特性至关重要。在这项研究中,我们开发了一种糖蛋白质组学的方法,通过使用timsTOF Pro质谱仪(MS)来确定流感糖蛋白的位点特异性糖基化的丰度和异质性。与Q Exactive HF MS相比,没有亲水相互作用液相色谱柱富集的timsTOF Pro MS方法获得了相似的糖肽覆盖率和数量,但在鉴定低丰度糖肽方面更有效。我们定量了A/chicken/Wuxi/0405005/2013(H7 N9)和A/mute swan/罗得岛/A00325125/2008(H7 N3)血凝素中完整位点特异性糖肽的分布。结果显示,两种病毒的血凝素在N22、N38、N240和N483处具有复杂的N-聚糖,但在N411处仅具有高甘露糖聚糖,然而,这些病毒之间的聚糖类型和数量不同。由离子迁移谱法从timsTOF Pro MS数据提供的碰撞截面(CCS)区分了糖肽的唾液酸化键。总之,timsTOF Pro MS方法可以在不富集的情况下定量流感糖蛋白的完整位点特异性聚糖,从而促进流感疫苗的开发和生产。
N-Linked glycosylation in hemagglutinin and neuraminidase glycoproteins of influenza viruses affects antigenic and receptor binding properties, and precise analyses of site-specific glycoforms in these proteins are critical in understanding the antigenic and immunogenic properties of influenza viruses. In this study, we developed a glycoproteomic approach by using a timsTOF Pro mass spectrometer (MS) to determine the abundance and heterogeneity of site-specific glycosylation for influenza glycoproteins. Compared with a Q Exactive HF MS, the timsTOF Pro MS method without the hydrophilic interaction liquid chromatography column enrichment achieved similar glycopeptide coverage and quantities but was more effective in identifying low-abundance glycopeptides. We quantified the distributions of intact site-specific glycopeptides in hemagglutinin of A/chicken/Wuxi/0405005/2013 (H7N9) and A/mute swan/Rhode Island/A00325125/2008 (H7N3). Results showed that hemagglutinin for both viruses had complex N-glycans at N22, N38, N240, and N483 but only high-mannose glycans at N411 and, however, that the type and quantities of glycans were distinct between these viruses. Collisional cross section (CCS) provided by the ion mobility spectrometry from the timsTOF Pro MS data differentiated sialylation linkages of the glycopeptides. In summary, timsTOF Pro MS method can quantify intact site-specific glycans for influenza glycoproteins without enrichment and thus facilitate influenza vaccine development and production.
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