PXD012155-1

PXD012155 is an original dataset announced via ProteomeXchange.

Title	Spatiotemporal changes of the phagosomal proteome in dendritic cells in response to LPS stimulation
Description	Dendritic cells (DCs) are professional phagocytes that use innate sensing and phagocytosis to internalize and degrade self as well as foreign material, such as pathogenic bacteria, within phagosomes. These intracellular compartments are equipped to generate antigenic peptides that serve as source for antigen presentation to T cells initiating adaptive immune responses. Nonetheless, the phagosomal proteome of DCs is only partially studied, in particular in response to inflammatory cues. The phagosomal proteome is highly dynamic as it changes during phagosome maturation, when phagosomes sequentially interact with endosomes and lysosomes. In addition, the activation status of the phagocyte can modulate the phagosomal composition and is able to shape phagosomal functions. In this study, we determined spatiotemporal changes of the proteome of DC phagosomes during their maturation and compared resting and lipopolysaccharide (LPS)-stimulated bone marrow-derived DCs by label-free, quantitative mass spectrometry. Ovalbumin-coupled latex beads were used as phagocytosis model system and revealed that LPS-treated DCs show decreased recruitment of proteins involved in phagosome maturation, such as subunits of the vacuolar proton ATPase, cathepsin B, D, S and RAB7. In contrast, those phagosomes were characterized by an increased recruitment of proteins involved in antigen cross-presentation, e.g. different subunits of the proteasome and MHC I molecules, tapasin etc., confirming increased antigen presentation efficacy in those cells. In addition, we identified several phagosomal proteins that were not previously associated with phagosomal functions and reveal a novel role for immune-responsive gene 1 (IRG1) in phagocytic uptake of particles in resting DCs.
HostingRepository	PRIDE
AnnounceDate	2019-02-28
AnnouncementXML	Submission_2019-02-28_09:30:53.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Matthias Trost
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: 10090;
ModificationList	iodoacetamide derivatized residue; deamidated residue
Instrument	Orbitrap Fusion Lumos

Revision	Datetime	Status	ChangeLog Entry
0	2018-12-21 05:37:39	ID requested
⏵ 1	2019-02-28 09:30:54	announced

Pauwels AM, H, ä, rtlova A, Peltier J, Driege Y, Baudelet G, Brodin P, Trost M, Beyaert R, Hoffmann E, Spatiotemporal Changes of the Phagosomal Proteome in Dendritic Cells in Response to LPS Stimulation. Mol Cell Proteomics, 18(5):909-922(2019) [pubmed]

curator keyword: Biological

submitter keyword: denditric cells, label-free quantification, phagosomes, mass spectrometry

Pr Matthias Trost
contact affiliation	Newcastle University Instite for Cell and molecular Biosciences (ICAMB) Framglinton place, N2E4HH Newcastle Upon Tyne, UK
contact email	matthias.trost@ncl.ac.uk
lab head
Matthias Trost
contact affiliation	Newcastle University
contact email	matthias.trost@ncl.ac.uk
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD012155
     1. Label: PRIDE project
     2. Name: Spatiotemporal changes of the phagosomal proteome in dendritic cells in response to LPS stimulation