Cell type mapping of inflammatory muscle diseases highlights selective myofiber vulnerability in inclusion body myositis.


Journal

Nature aging
ISSN: 2662-8465
Titre abrégé: Nat Aging
Pays: United States
ID NLM: 101773306

Informations de publication

Date de publication:
04 Jun 2024
Historique:
received: 20 09 2023
accepted: 03 05 2024
medline: 5 6 2024
pubmed: 5 6 2024
entrez: 4 6 2024
Statut: aheadofprint

Résumé

Inclusion body myositis (IBM) is the most prevalent inflammatory muscle disease in older adults with no effective therapy available. In contrast to other inflammatory myopathies such as subacute, immune-mediated necrotizing myopathy (IMNM), IBM follows a chronic disease course with both inflammatory and degenerative features of pathology. Moreover, causal factors and molecular drivers of IBM progression are largely unknown. Therefore, we paired single-nucleus RNA sequencing with spatial transcriptomics from patient muscle biopsies to map cell-type-specific drivers underlying IBM pathogenesis compared with IMNM muscles and noninflammatory skeletal muscle samples. In IBM muscles, we observed a selective loss of type 2 myonuclei paralleled by increased levels of cytotoxic T and conventional type 1 dendritic cells. IBM myofibers were characterized by either upregulation of cell stress markers featuring GADD45A and NORAD or protein degradation markers including RNF7 associated with p62 aggregates. GADD45A upregulation was preferentially seen in type 2A myofibers associated with severe tissue inflammation. We also noted IBM-specific upregulation of ACHE encoding acetylcholinesterase, which can be regulated by NORAD activity and result in functional denervation of myofibers. Our results provide promising insights into possible mechanisms of myofiber degeneration in IBM and suggest a selective type 2 fiber vulnerability linked to genomic stress and denervation pathways.

Identifiants

pubmed: 38834884
doi: 10.1038/s43587-024-00645-9
pii: 10.1038/s43587-024-00645-9
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Informations de copyright

© 2024. The Author(s).

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Auteurs

Sven Wischnewski (S)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Thomas Thäwel (T)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Chiseko Ikenaga (C)

Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Anna Kocharyan (A)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Celia Lerma-Martin (C)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Amel Zulji (A)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Hans-Werner Rausch (HW)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

David Brenner (D)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
Department of Neurology, University of Ulm, Ulm, Germany.

Leonie Thomas (L)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Michael Kutza (M)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Brittney Wick (B)

Genomics Institute, University of California, Santa Cruz, Santa Cruz, CA, USA.

Tim Trobisch (T)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Corinna Preusse (C)

Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany.

Maximilian Haeussler (M)

Genomics Institute, University of California, Santa Cruz, Santa Cruz, CA, USA.

Jan Leipe (J)

Division of Rheumatology, Department of Medicine V, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.

Albert Ludolph (A)

Department of Neurology, University of Ulm, Ulm, Germany.
Deutsches Zentrum für Neurodegenerative Erkrankungen, Ulm, Germany.

Angela Rosenbohm (A)

Department of Neurology, University of Ulm, Ulm, Germany.

Ahmet Hoke (A)

Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA.

Michael Platten (M)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
DKTK Clinical Cooperation Unit Neuroimmunology and Brain Tumor Immunology, German Cancer Research Center, Heidelberg, Germany.
Mannheim Center for Translational Neuroscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
Mannheim Institute for Innate Immunoscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany.

Jochen H Weishaupt (JH)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
Mannheim Center for Translational Neuroscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
Mannheim Institute for Innate Immunoscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany.

Clemens J Sommer (CJ)

Institute for Neuropathology, University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany.

Werner Stenzel (W)

Department of Neuropathology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin and Berlin Institute of Health, Berlin, Germany.

Thomas E Lloyd (TE)

Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA. thomas.lloyd@bcm.edu.
Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, USA. thomas.lloyd@bcm.edu.
Department of Neurology, Baylor College of Medicine, Houston, TX, USA. thomas.lloyd@bcm.edu.

Lucas Schirmer (L)

Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany. lucas.schirmer@medma.uni-heidelberg.de.
Mannheim Center for Translational Neuroscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany. lucas.schirmer@medma.uni-heidelberg.de.
Mannheim Institute for Innate Immunoscience, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany. lucas.schirmer@medma.uni-heidelberg.de.
Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany. lucas.schirmer@medma.uni-heidelberg.de.

Classifications MeSH