Altered B-cell, plasma cell and antibody immune profiles in blood of systemic mastocytosis.
B-lymphocyte
immunoglobulin
mast cell
plasma cell
systemic mastocytosis
Journal
The Journal of allergy and clinical immunology
ISSN: 1097-6825
Titre abrégé: J Allergy Clin Immunol
Pays: United States
ID NLM: 1275002
Informations de publication
Date de publication:
16 Oct 2024
16 Oct 2024
Historique:
received:
30
04
2024
revised:
18
09
2024
accepted:
07
10
2024
medline:
19
10
2024
pubmed:
19
10
2024
entrez:
18
10
2024
Statut:
aheadofprint
Résumé
Systemic mastocytosis (SM) is a heterogeneous disease characterised by an expansion of KIT-mutated constitutively activated mast cells (MC) which release MC mediators that might act on the tumour microenvironment including other immune cells. Here we investigated the blood distribution of B-cell, plasma cell (PC) and antibody-isotype compartments in SM. We used spectral flow cytometry and the EuroFlow Immunomonitoring panel and Lymphocyte Screening Tube to quantify B-cells, PC and their subsets in blood of 108 SM patients - 35 bone marrow mastocytosis (BMM), 64 indolent SM (ISM), 9 aggressive SM (ASM)- vs 117 age-matched healthy donors (HD) and paired bone marrow (BM) samples of 31 SM vs 17 controls, respectively. In parallel, immunoglobulin (Ig) M, IgD, IgG, IgA and IgE plasma levels of were measured. Compared to HD, SM patients showed an increased immature B-cell production in BM (P=0.003) associated with a greater release of pre-germinal center immature (P<0.001) and naive CD5 Our results reveal a significant dysregulation of the B-cell and PC compartments in blood of SM patients, consistent with distinctly altered antibody-isotype profiles in plasma of BMM vs ISM vs ASM patients.
Sections du résumé
BACKGROUND
BACKGROUND
Systemic mastocytosis (SM) is a heterogeneous disease characterised by an expansion of KIT-mutated constitutively activated mast cells (MC) which release MC mediators that might act on the tumour microenvironment including other immune cells.
OBJECTIVE
OBJECTIVE
Here we investigated the blood distribution of B-cell, plasma cell (PC) and antibody-isotype compartments in SM.
METHODS
METHODS
We used spectral flow cytometry and the EuroFlow Immunomonitoring panel and Lymphocyte Screening Tube to quantify B-cells, PC and their subsets in blood of 108 SM patients - 35 bone marrow mastocytosis (BMM), 64 indolent SM (ISM), 9 aggressive SM (ASM)- vs 117 age-matched healthy donors (HD) and paired bone marrow (BM) samples of 31 SM vs 17 controls, respectively. In parallel, immunoglobulin (Ig) M, IgD, IgG, IgA and IgE plasma levels of were measured.
RESULTS
RESULTS
Compared to HD, SM patients showed an increased immature B-cell production in BM (P=0.003) associated with a greater release of pre-germinal center immature (P<0.001) and naive CD5
CONCLUSION
CONCLUSIONS
Our results reveal a significant dysregulation of the B-cell and PC compartments in blood of SM patients, consistent with distinctly altered antibody-isotype profiles in plasma of BMM vs ISM vs ASM patients.
Identifiants
pubmed: 39423877
pii: S0091-6749(24)01062-5
doi: 10.1016/j.jaci.2024.10.005
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
Copyright © 2024. Published by Elsevier Inc.