PXD074568-1

PXD074568 is an original dataset announced via ProteomeXchange.

Title	Lipopolysaccharide stimulates dynamic changes in B cell metabolism to promote proliferation - Fluvastatin data
Description	Naïve B cells exit quiescence and enter a proliferative state upon activation, ultimately differentiating into antibody-secreting or memory B cells. Toll-like receptor (TLR) ligands, such as lipopolysaccharide (LPS), can serve as physiological stimuli to initiate this transition. Using quantitative proteomics, we show that TLR4 engagement induces metabolic reprogramming in murine B cells, increasing the expression of amino acid transporters and cholesterol biosynthetic enzymes. The amino acid transporter SLC7A5 is markedly upregulated following LPS stimulation, and conditional deletion of Slc7a5 impairs B cell proliferation, underscoring its essential role in B cell activation. LPS also elevates intracellular cholesterol levels, and inhibition of the rate-limiting enzyme HMG-CoA reductase blocks proliferation. This effect was mediated by a dual requirement for cholesterol metabolism and protein prenylation downstream of HMG-CoA reductase. Notably, this was not unique to TLR4 signalling but is also observed in B cells activated via TLR7, TLR9, CD40, or the B cell receptor. Together, these findings reveal that metabolic rewiring, including amino acid uptake and cholesterol metabolism, is an essential feature of B cell activation and proliferation.
HostingRepository	PRIDE
AnnounceDate	2026-05-18
AnnouncementXML	Submission_2026-05-18_05:53:43.173.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Andrew Howden
SpeciesList	scientific name: Mus musculus (Mouse); NCBI TaxID: NEWT:10090;
ModificationList	acetylated residue; monohydroxylated residue; iodoacetamide derivatized residue
Instrument	Orbitrap Astral

Revision	Datetime	Status	ChangeLog Entry
0	2026-02-17 17:09:11	ID requested
⏵ 1	2026-05-18 05:53:44	announced

Dataset with its publication pending

submitter keyword: None

Professor Simon Arthur
contact affiliation	Faculty of Life Sciences, University of Dundee
contact email	j.s.c.arthur@dundee.ac.uk
lab head
Andrew Howden
contact affiliation	University of Dundee
contact email	a.howden@dundee.ac.uk
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD074568
     1. Label: PRIDE project
     2. Name: Lipopolysaccharide stimulates dynamic changes in B cell metabolism to promote proliferation - Fluvastatin data