Characterisation of choroid plexus-infiltrating T cells reveals novel therapeutic targets in murine neuropsychiatric lupus

© Author(s) (or their employer(s)) 2024. No commercial re-use. See rights and permissions. Published by BMJ..

OBJECTIVE: Diffuse central nervous system manifestations, referred to as neuropsychiatric lupus (NPSLE), are observed in 20-40% of lupus patients and involve complex mechanisms that have not yet been adequately elucidated. In murine NPSLE models, choroid plexus (ChP)-infiltrating T cells have not been fully evaluated as drivers of neuropsychiatric disease.

METHOD: Droplet-based single-cell transcriptomic analysis (single-cell RNA sequencing) and immune T-cell receptor profiling were performed on ChP tissue from MRL/lpr mice, an NPSLE mouse model, at an 'early' and 'late' disease state, to investigate the infiltrating immune cells that accumulate with NPSLE disease progression.

RESULTS: We found 19 unique clusters of stromal and infiltrating cells present in the ChP of NPSLE mice. Higher resolution of the T-cell clusters uncovered multiple T-cell subsets, with increased exhaustion and hypoxia expression profiles. Clonal analysis revealed that the clonal CD8+T cell CDR3 sequence, ASGDALGGYEQY, matched that of a published T-cell receptor sequence with specificity for myelin basic protein. Stromal fibroblasts are likely drivers of T-cell recruitment by upregulating the VCAM signalling pathway. Systemic blockade of VLA-4, the cognate ligand of VCAM, resulted in significant resolution of the ChP immune cell infiltration and attenuation of the depressive phenotype.

CONCLUSION: Our analysis details the dynamic transcriptomic changes associated with murine NPSLE disease progression, and highlights its potential use in identifying prospective lupus brain therapeutic targets.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - year:2024

Enthalten in:

Annals of the rheumatic diseases - (2024) vom: 26. März

Sprache:

Englisch

Beteiligte Personen:

Moore, Erica [VerfasserIn]
Bharrhan, Sushma [VerfasserIn]
Rao, Deepak A [VerfasserIn]
Macian, Fernando [VerfasserIn]
Putterman, Chaim [VerfasserIn]

Links:

Volltext

Themen:

Journal Article
Lupus Erythematosus, Systemic
T-Lymphocyte subsets
Therapeutics

Anmerkungen:

Date Revised 26.03.2024

published: Print-Electronic

Citation Status Publisher

doi:

10.1136/ard-2023-224689

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370211588