PXD020644-2

PXD020644 is an original dataset announced via ProteomeXchange.

Title	A mass spectrometry-based targeted assay for detection of SARS-CoV-2 antigen from clinical specimens
Description	The COVID-19 pandemic caused by severe acute respiratory syndrome-coronavirus 2 (SARS-CoV-2) has overwhelmed health systems worldwide and highlighted limitations of diagnostic testing. Several types of diagnostic tests including RT-PCR-based assays and antigen detection by lateral flow assays, each with their own strengths and weaknesses, have been developed and deployed in a short time. Here, we describe an immunoaffinity purification approach followed a by high resolution mass spectrometry-based targeted qualitative assay capable of detecting SARS-CoV-2 viral antigen from nasopharyngeal swab samples. Based on our discovery experiments using purified virus, recombinant viral protein and nasopharyngeal swab samples from COVID-19 positive patients, nucleocapsid protein was selected as a target antigen. We then developed an automated antibody capture-based workflow coupled to targeted high-field asymmetric waveform ion mobility spectrometry (FAIMS) - parallel reaction monitoring (PRM) assay on an Orbitrap Exploris 480 mass spectrometer. An ensemble machine learning-based model for determining COVID-19 positive samples was developed using fragment ion intensities from the PRM data. The optimized targeted assay, which was used to analyze 88 positive and 88 negative nasopharyngeal swab samples for validation, resulted in 98% (95% CI = 0.922-0.997) (86/88) sensitivity and 100% (95% CI = 0.958-1.000) (88/88) specificity using RT-PCR-based molecular testing as the reference method. Our results demonstrate that direct detection of infectious agents from clinical samples by tandem mass spectrometry-based assays have potential to be deployed as diagnostic assays in clinical laboratories, which has hitherto been limited to analysis of pure microbial culture
HostingRepository	PRIDE
AnnounceDate	2021-06-10
AnnouncementXML	Submission_2021-06-09_22:48:50.639.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Akhilesh Pandey
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	monohydroxylated residue; iodoacetamide derivatized residue
Instrument	Orbitrap Eclipse; Orbitrap Exploris 480

Revision	Datetime	Status	ChangeLog Entry
0	2020-07-29 22:10:51	ID requested
1	2020-08-12 22:22:29	announced
⏵ 2	2021-06-09 22:48:51	announced	2021-06-10: Updated project metadata.
3	2021-06-09 22:50:02	announced	2021-06-10: Updated project metadata.
4	2024-10-22 05:10:43	announced	2024-10-22: Updated project metadata.

Dataset with its publication pending

ProteomeXchange project tag: Sars-cov-2, Covid-19

submitter keyword: Human, Clinical diagnosis, LC-MSMS, AP-MS, SRM/PRM, Coronavirus, Viral antigen, SARS-CoV-2, COVID19, Targeted proteomics, Swab

Akhilesh Pandey
contact affiliation	Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA
contact email	pandey.akhilesh@mayo.edu
lab head
Akhilesh Pandey
contact affiliation	Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905
contact email	pandey.akhilesh@mayo.edu
dataset submitter

Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://ftp.pride.ebi.ac.uk/pride/data/archive/2020/08/PXD020644

PRIDE project URI

• PRIDE
  1. PXD020644
     1. Label: PRIDE project
     2. Name: A mass spectrometry-based targeted assay for detection of SARS-CoV-2 antigen from clinical specimens