A discrete 'early-responder' stromal-cell subtype orchestrates immunocyte recruitment to injured tissue

© 2023. The Author(s), under exclusive licence to Springer Nature America, Inc..

Following acute injury, stromal cells promote tissue regeneration by a diversity of mechanisms. Time-resolved single-cell RNA sequencing of muscle mesenchymal stromal cells (MmSCs) responding to acute injury identified an 'early-responder' subtype that spiked on day 1 and expressed a notable array of transcripts encoding immunomodulators. IL-1β, TNF-α and oncostatin M each strongly and rapidly induced MmSCs transcribing this immunomodulatory program. Macrophages amplified the program but were not strictly required for its induction. Transfer of the inflammatory MmSC subtype, tagged with a unique surface marker, into healthy hindlimb muscle induced inflammation primarily driven by neutrophils and macrophages. Among the abundant inflammatory transcripts produced by this subtype, Cxcl5 was stroma-specific and highly upregulated with injury. Depletion of this chemokine early after injury revealed a substantial impact on recruitment of neutrophils, a prolongation of inflammation to later times and an effect on tissue regeneration. Mesenchymal stromal cell subtypes expressing a comparable inflammatory program were found in a mouse model of muscular dystrophy and in several other tissues and pathologies in both mice and humans. These 'early-responder' mesenchymal stromal cells, already in place, permit rapid and coordinated mobilization and amplification of critical cell collaborators in response to injury.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:24

Enthalten in:

Nature immunology - 24(2023), 12 vom: 20. Dez., Seite 2053-2067

Sprache:

Englisch

Beteiligte Personen:

Yaghi, Omar K [VerfasserIn]
Hanna, Bola S [VerfasserIn]
Langston, P Kent [VerfasserIn]
Michelson, Daniel A [VerfasserIn]
Jayewickreme, Teshika [VerfasserIn]
Marin-Rodero, Miguel [VerfasserIn]
Benoist, Christophe [VerfasserIn]
Mathis, Diane [VerfasserIn]

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Journal Article

Anmerkungen:

Date Completed 29.11.2023

Date Revised 21.02.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1038/s41590-023-01669-w

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM364242647