PXD009707 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Candidate Treponema pallidum biomarkers uncovered in human urine samples from MSM individuals with syphilis using a multi-platform mass spectrometry approach |
Description | Background A molecular diagnostic test that could directly evaluate Treponema pallidum subspecies pallidum antigens in urine would greatly facilitate the prompt diagnosis of syphilis. Methods A multi-platform high resolution shotgun proteomics approach was used to investigate the presence of T. pallidum proteins in male urine samples collected from individuals with and without syphilis. Study participants were included in an observational cohort study conducted at the Institute of Tropical Medicine, Antwerp, Belgium from 2014 to 2017. In total, N = 60 individuals were included in this sub-study, including n = 36 with early symptomatic stage (primary/secondary), n = 13 early latent and n = 5 late latent stage and n = 6 controls. Almost all participants were HIV-positive (56/60; 93 %) and identified as men who have sex with men (MSM) (59/60; 98 %). Sixteen (27 %) individuals were serum PCR positive for T. pallidum at the time of diagnosis. Ten pools containing urine from six participants (±1.5 mL per individual) were created based on clinical staging. Urine protein was extracted from the pools by a two-step molecular weight cut-off centrifugal filtration to remove large proteins and non-protein material. Samples were digested, subjected to multi-dimensional liquid chromatographic separation based on hydrophobicity and were analysed with matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) and/or liquid chromatography- electrospray ionization quadruple ion mobility time-of-flight high-definition mass spectrometry (LC/ESI-Q-IM-TOF) in data dependent (MALDI-TOF/TOF) and data independent HDMSE (ESI-IM-Q-TOF) acquisition modes. Results In total, 26 peptides corresponding to four unique T. pallidum proteins were uncovered in four different pooled urine samples, from n = 3 symptomatic (primary/secondary stage; PSS) and n = 1 latent stage pool. Peptides from GTPase Obg (Tp0742) were detected in two separate PSS pooled samples. Protein designations are listed as in the currently annotated T. pallidum proteome available at the UniProt database (Proteome ID: UP000014259) which is related to the genome assembly and annotation ID GCA_000410535.2 listed on the European Nucleotide Archive. Eleven peptides from an uncharacterized protein (Tp0369) and 8 peptides from a protein annotated as the Borrelia-like p83/100 protein (Tp0486) were detected in two different PSS pooled samples. A protein annotated as an ABC superfamily transport protein (Tp0804) was uncovered in a latent stage pooled sample. BLAST analyses revealed low peptide sequence similarity with other pathogenic and commensal prokaryotes and human proteins. Conclusions High resolution mass spectrometric analyses of protein extracts from pooled urine samples resulted in the detection of four T. pallidum proteins. This is the first successful account of applying proteomics approaches to detect treponemal antigens in clinical samples. These proteins could represent potential biomarkers for downstream diagnostic applications. |
HostingRepository | PRIDE |
AnnounceDate | 2018-10-18 |
AnnouncementXML | Submission_2018-10-18_08:03:07.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | Maarten Dhaenens |
SpeciesList | scientific name: Homo sapiens (Human); NCBI TaxID: 9606; |
ModificationList | methylthiolated residue; monohydroxylated residue; deamidated residue |
Instrument | Synapt MS |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2018-05-07 23:36:55 | ID requested | |
⏵ 1 | 2018-10-18 08:03:08 | announced | |
Publication List
Osbak KK, Van Raemdonck GA, Dom M, Cameron CE, Meehan CJ, Deforce D, Ostade XV, Kenyon CR, Dhaenens M, Candidate Treponema pallidum biomarkers uncovered in urine from individuals with syphilis using mass spectrometry. Future Microbiol, 13(13):1497-1510(2018) [pubmed] |
Keyword List
curator keyword: Biomedical |
submitter keyword: Mass spectrometry |
syphilis |
Treponema pallidum |
biomarker discovery |
antigen test |
urine |
data independent acquisition |
proteomics |
Contact List
Dieter Deforce |
contact affiliation | Laboratory for Pharmaceutical Biotechnology, Ghent University, Ghent, Belgium |
contact email | dieter.deforce@ugent.be |
lab head | |
Maarten Dhaenens |
contact affiliation | Faculity of Pharmaceutical Biotechnology |
contact email | maarten.dhaenens@ugent.be |
dataset submitter | |
Full Dataset Link List
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/2018/10/PXD009707 |
PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD009707
- Label: PRIDE project
- Name: Candidate Treponema pallidum biomarkers uncovered in human urine samples from MSM individuals with syphilis using a multi-platform mass spectrometry approach