PXD038065

PXD038065 is an original dataset announced via ProteomeXchange.

Title	Fucosylation of HLA-DRB1 regulates CD4+T cell-mediated anti-melanoma immunity and enhances immunotherapy efficacy: CD4+ T Cell Phosphoproteomics
Description	Immunotherapy efficacy is limited in melanoma, and combinations of immunotherapies with other modalities have yielded limited improvements but also adverse events requiring cessation of treatment. In addition to ineffective patient stratification, efficacy is impaired by paucity of intratumoral immune cells (itICs)—thus, effective strategies to safely increase itICs are needed. We report that dietary administration of L-fucose induces fucosylation and cell surface enrichment of the MHC-II protein HLA-DRB1 in melanoma cells, triggering CD4+T cell-mediated increases in ItICs and anti-tumor immunity, enhancing immune checkpoint blockade responses. Melanoma fucosylation and fucosylated HLA-DRB1 associate with intratumoral T cell abundance and anti-PD1 responder status in patient melanoma specimens, suggesting the potential use of melanoma fucosylation as a strategy for stratifying patients for immunotherapies. Our findings demonstrate that fucosylation is a key mediator of anti-tumor immunity, and importantly, suggest that L-fucose is a powerful agent for safely increasing ItICs and immunotherapy efficacy in melanoma.
HostingRepository	PRIDE
AnnounceDate	2022-12-16
AnnouncementXML	Submission_2022-12-15_19:15:37.710.xml
DigitalObjectIdentifier	https://dx.doi.org/10.6019/PXD038065
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Supported dataset by repository
PrimarySubmitter	JohnKoomen
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	phosphorylated residue; monohydroxylated residue; iodoacetamide derivatized residue
Instrument	Q Exactive

Revision	Datetime	Status	ChangeLog Entry
0	2022-11-09 10:32:25	ID requested
⏵ 1	2022-12-15 19:15:38	announced

10.6019/PXD038065;

submitter keyword: Phosphoproteomics, Fucosylation,Melanoma, CD4 T Cells, Immunotherapy

Eric Lau,PhD
contact affiliation	Tumor Biology Department Molecular Medicine Program Moffitt Cancer Center Tampa, FL, USA
contact email	eric.lau@moffitt.org
lab head
JohnKoomen
contact affiliation	Moffitt Cancer Center
contact email	john.koomen@moffitt.org
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD038065
     1. Label: PRIDE project
     2. Name: Fucosylation of HLA-DRB1 regulates CD4+T cell-mediated anti-melanoma immunity and enhances immunotherapy efficacy: CD4+ T Cell Phosphoproteomics