Architectural B-cell organization in skeletal muscle identifies subtypes of dermatomyositis

Abstract: Objective:
To study the B-cell content, organization, and existence of distinct B-cell subpopulations in relation to the expression of type 1 interferon signature related genes in dermatomyositis (DM).

Methods:
Evaluation of skeletal muscle biopsies from patients with adult DM (aDM) and juvenile DM (jDM) by histology, immunohistochemistry, electron microscopy, and quantitative reverse-transcription PCR.

Results:
We defined 3 aDM subgroups—classic (containing occasional B cells without clusters), B-cell–rich, and follicle-like aDM—further elucidating IM B-lymphocyte maturation and immunity. The quantity of B cells and formation of ectopic lymphoid structures in a subset of patients with aDM were associated with a specific profile of cytokines and chemokines involved in lymphoid neogenesis. Levels of type 1 interferon signature related gene expression paralleled B-cell content and architectural organization and link B-cell immunity to the interferon type I signature.

Conclusion:
These data corroborate the important role of B cells in DM, highlighting the direct link between humoral mechanisms as key players in B-cell immunity and the role of type I interferon–related immunity

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch
Notes
Neurology : Neuroimmunology & Neuroinflammation. - 5, 3 (2018) , e451, ISSN: 2332-7812

Event
Veröffentlichung
(where)
Freiburg
(who)
Universität
(when)
2023
Creator
Radke, Josefine
Koll, Randi
Preuße, Corinna
Pehl, Debora
Todorova, Kremena
Schönemann, Constanze
Allenbach, Yves
Aronica, Eleonora M.A
Visser, Marianne de
Heppner, Frank L.
Weis, Joachim
Doostkam, Soroush
Maisonobe, Thierry
Benveniste, Olivier
Goebel, Hans Hilmar
Stenzel, Werner

DOI
10.1212/nxi.0000000000000451
URN
urn:nbn:de:bsz:25-freidok-1478664
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
14.08.2025, 10:59 AM CEST

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Associated

Time of origin

  • 2023

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