Interleukin‐1 Is Overexpressed in Injured Muscles Following Spinal Cord Injury and Promotes Neurogenic Heterotopic Ossification
ABSTRACT Neurogenic heterotopic ossifications (NHOs) form in periarticular muscles after severe spinal cord (SCI) and traumatic brain injuries. The pathogenesis of NHO is poorly understood with no effective preventive treatment. The only curative treatment remains surgical resection of pathological NHOs. In a mouse model of SCI‐induced NHO that involves a transection of the spinal cord combined with a muscle injury, a differential gene expression analysis revealed that genes involved in inflammation such as interleukin‐1β (IL‐1β) were overexpressed in muscles developing NHO. Using mice knocked‐out for the gene encoding IL‐1 receptor (IL1R1) and neutralizing antibodies for IL‐1α and IL‐1β, we show that IL‐1 signaling contributes to NHO development after SCI in mice. Interestingly, other proteins involved in inflammation that were also overexpressed in muscles developing NHO, such as colony‐stimulating factor‐1, tumor necrosis factor, or C‐C chemokine ligand‐2, did not promote NHO development. Finally, using NHO biopsies from SCI and TBI patients, we show that IL‐1β is expressed by CD68+ macrophages. IL‐1α and IL‐1β produced by activated human monocytes promote calcium mineralization and RUNX2 expression in fibro‐adipogenic progenitors isolated from muscles surrounding NHOs. Altogether, these data suggest that interleukin‐1 promotes NHO development in both humans and mice. © 2021 American Society for Bone and Mineral Research (ASBMR)..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:37 |
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| Enthalten in: |
Journal of Bone and Mineral Research - 37(2022), 3, Seite 531-546 |
| Beteiligte Personen: |
Tseng, Hsu‐Wen [VerfasserIn] |
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| BKL: |
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| Anmerkungen: |
© 2022 American Society for Bone and Mineral Research |
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| Umfang: |
16 |
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| doi: |
10.1002/jbmr.4482 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a ABSTRACT Neurogenic heterotopic ossifications (NHOs) form in periarticular muscles after severe spinal cord (SCI) and traumatic brain injuries. The pathogenesis of NHO is poorly understood with no effective preventive treatment. The only curative treatment remains surgical resection of pathological NHOs. In a mouse model of SCI‐induced NHO that involves a transection of the spinal cord combined with a muscle injury, a differential gene expression analysis revealed that genes involved in inflammation such as interleukin‐1β (IL‐1β) were overexpressed in muscles developing NHO. Using mice knocked‐out for the gene encoding IL‐1 receptor (IL1R1) and neutralizing antibodies for IL‐1α and IL‐1β, we show that IL‐1 signaling contributes to NHO development after SCI in mice. Interestingly, other proteins involved in inflammation that were also overexpressed in muscles developing NHO, such as colony‐stimulating factor‐1, tumor necrosis factor, or C‐C chemokine ligand‐2, did not promote NHO development. Finally, using NHO biopsies from SCI and TBI patients, we show that IL‐1β is expressed by CD68+ macrophages. IL‐1α and IL‐1β produced by activated human monocytes promote calcium mineralization and RUNX2 expression in fibro‐adipogenic progenitors isolated from muscles surrounding NHOs. Altogether, these data suggest that interleukin‐1 promotes NHO development in both humans and mice. © 2021 American Society for Bone and Mineral Research (ASBMR). | ||
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