Dataset Information

Absolute quantification of influenza virus proteins

ABSTRACT: SWATH- mass spectrometry coupled with isotope labelled standard peptides for absolute quantification (AQUA) of proteins is a relatively new technique for the characterization of proteins. In this study, a mass spectrometry-based method for absolute quantification of selected influenza A virus proteins (hemagglutinin, neuraminidase, nucleoprotein, matrix protein 1) is presented.

ORGANISM(S): Influenza A Virus (a/puerto Rico/8/1934(h1n1))

SUBMITTER: Jan Küchler

PROVIDER: PXD029784 | panorama | Sun Aug 07 00:00:00 BST 2022

REPOSITORIES: PanoramaPublic

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Absolute quantification of viral proteins during single-round replication of MDCK suspension cells.

Küchler Jan J Püttker Sebastian S Lahmann Patrick P Genzel Yvonne Y Kupke Sascha S Benndorf Dirk D Reichl Udo U

Journal of proteomics 20220301

Madin-Darby canine kidney (MDCK) cells are widely used in basic research and for the propagation of influenza A viruses (IAV) for vaccine production. To identify targets for antiviral therapies and to optimize vaccine manufacturing, a detailed understanding of the viral life cycle is important. This includes the characterization of virus entry, the synthesis of the various viral RNAs and proteins, the transfer of viral compounds in the cell and virus budding. In case quantitative information is ...[more]

PMID: 35240312

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Project description:We propose a fully automated novel workflow for lipidomics based on flow injection, followed by liquid chromatography-high-resolution mass spectrometry (FI/LC-HRMS). The workflow combined in-depth characterization of the lipidome achieved via reversed-phase LC-HRMS with absolute quantification by using a large number of lipid species-specific and/or retention time (RT)-matched/class-specific calibrants. The lipidome of 13C-labelled yeast (LILY) provided a large panel of cost-effective internal standards (ISTDs) covering triacylglycerols (TG), steryl esters (SE), free fatty acids (FA), diacylglycerols (DG), sterols (ST), ceramides (Cer), hexosyl ceramides (HexCer), phosphatidylglycerols (PG), phosphatidylethanolamines (PE), phosphatidic acids (PA), cardiolipins (CL), phosphatidylinositols (PI), phosphatidylserines (PS), phosphatidylcholines (PC), lysophosphatidylcholines (LPC) and lysophosphatidylethanolamines (LPE). The workflow in combination with the LILY lipid panel enables simultaneous quantification via (1) external multi-point calibration with internal standardization and (2) internal one-point calibration with LILY as a surrogate ISTD, increasing the coverage while keeping the accuracy and throughput high. Extensive measures on quality control allowed us to rank the calibration strategies and to automatically select the calibration strategy of the highest metrological order for the respective lipid species. Overall, the workflow enabled a streamlined analysis, with a limit of detection in the low femtomolar range, and provided validation tools together with absolute concentration values for >350 lipids in human plasma on a species level. Based on the selected standard panel, lipids from 7 classes (LPC, LPE, PC, PE, PI, DG, TG) passed stringent quality filters, which included QC accuracy, a precision and recovery bias of <30% and concentrations within the 99% confidence interval of the international laboratory comparison of SRM 1950, NIST, USA. The quantitative values are independent of common deuterated or non-endogenous ISTDs, thus offering cross-validation of different lipid methods and further standardizing lipidomics.

Dataset Information

Absolute quantification of influenza virus proteins

Publications

Absolute quantification of viral proteins during single-round replication of MDCK suspension cells.

Similar Datasets

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