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This study delved into the molecular mechanisms underlying mechanical stress-induced intervertebral disc degeneration (msi-IDD) through single-cell and high-throughput transcriptome sequencing in mouse models and patient samples. Results exhibited an upsurge in macrophage presence in msi-IDD intervertebral disc (IVD) tissues, with secreted phosphoprotein 1 (SPP1) identified as a pivotal driver exacerbating degeneration via the protein kinase RNA-like endoplasmic reticulum kinase/ activating transcription factor 4/ interleukin-10 (PERK/ATF4/IL-10) signaling axis. Inhibition of SPP1 demonstrated promising outcomes in mitigating msi-IDD progression in both in vitro and in vivo models. These findings underscore the therapeutic promise associated with the modulation of the PERK signaling pathway in IDD, shedding light on the pathogenesis of msi-IDD and proposing a promising avenue for intervention strategies.
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| http://dx.doi.org/10.1007/s10565-024-09948-4 | DOI Listing |
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