PXD030591 is an
original dataset announced via ProteomeXchange.
Dataset Summary
Title | Promiscuity of peptides presented in HLA-DP molecules from different immunogenicity groups is associated with T-cell cross-reactivity |
Description | In the context of HLA-DP-mismatched allogeneic stem cell transplantation, mismatched HLA-DP alleles can provoke profound allo-HLA-DP-specific immune responses from the donor T-cell repertoire leading to graft-versus-leukemia effect and/or graft-versus-host disease in the patient. The magnitude of allo-HLA-DP-specific immune responses has been shown to depend on the specific HLA-DP disparity between donor and patient and the immunogenicity of the mismatched HLA-DP allele(s). HLA-DP peptidome clustering (DPC) was developed to classify the HLA-DP molecules based on similarities and differences in their peptide-binding motifs. To investigate a possible categorization of HLA-DP molecules based on overlap of presented peptides, we identified and compared the peptidomes of the thirteen most frequently expressed HLA-DP molecules. Our categorization based on shared peptides was in line with the DPC classification. We found that the HLA-DP molecules within the previously defined groups DPC-1 or DPC-3 shared the largest numbers of presented peptides. However, the HLA-DP molecules in DPC-2 segregated into two subgroups based on the overlap in presented peptides. Besides overlap in presented peptides within the DPC groups, a substantial number of peptides was also found to be shared between HLA-DP molecules from different DPC groups, especially for groups DPC-1 and -2. The functional relevance of these findings was illustrated by demonstration of cross-reactivity of allo-HLA-DP-reactive T-cell clones not only against HLA-DP molecules within one DPC group, but also across different DPC groups. The promiscuity of peptides presented in various HLA-DP molecules and the cross-reactivity against different HLA-DP molecules demonstrate that these molecules cannot be strictly categorized in immunogenicity groups. |
HostingRepository | PRIDE |
AnnounceDate | 2022-02-12 |
AnnouncementXML | Submission_2022-02-11_16:08:30.876.xml |
DigitalObjectIdentifier | |
ReviewLevel | Peer-reviewed dataset |
DatasetOrigin | Original dataset |
RepositorySupport | Unsupported dataset by repository |
PrimarySubmitter | G Janssen |
SpeciesList | scientific name: Homo sapiens (Human); NCBI TaxID: 9606; |
ModificationList | acetylated residue; monohydroxylated residue |
Instrument | Orbitrap Fusion Lumos; Orbitrap Exploris 480 |
Dataset History
Revision | Datetime | Status | ChangeLog Entry |
0 | 2021-12-22 02:19:45 | ID requested | |
⏵ 1 | 2022-02-11 16:08:31 | announced | |
Publication List
Dataset with its publication pending |
Keyword List
submitter keyword: AlloSCT, HLA-DP, peptidome, DPC-classification, CD4 T-cell clones, cross-reactivity |
Contact List
P.A. van Veelen |
contact affiliation | Head Proteomics Group | Leiden University Medical Center |Center for Proteomics and Metabolomics | PO Box 9600 | 2300 RC Leiden | The Netherlands |
contact email | p.a.van_veelen@lumc.nl |
lab head | |
G Janssen |
contact affiliation | Leiden University Medical Center |
contact email | g.m.c.janssen@lumc.nl |
dataset submitter | |
Full Dataset Link List
Dataset FTP location
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PRIDE project URI |
Repository Record List
[ + ]
[ - ]
- PRIDE
- PXD030591
- Label: PRIDE project
- Name: Promiscuity of peptides presented in HLA-DP molecules from different immunogenicity groups is associated with T-cell cross-reactivity