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Irisin ameliorates the progression of intervertebral disc degeneration via LATS/YAP/CTGF signaling.

ABSTRACT: Irisin ameliorates the progression of intervertebral disc degeneration via LATS/YAP/CTGF signaling.

PROVIDER: PRJNA838468 | ENA |

REPOSITORIES: ENA

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Irisin ameliorates the progression of intervertebral disc degeneration via LATS/YAP/CTGF signaling.

Project description:Taken together, this study demonstrated that FNDC5 was lost in degenerative NP tissues, while irisin treatment ameliorated the ECM metabolism of NPCs and delay the progression of IDD via LATS/YAP/CTGF signaling. Taken together, this study demonstrated that FNDC5 was lost in degenerative NP tissues, while irisin treatment ameliorated the ECM metabolism of NPCs and delay the progression of IDD via LATS/YAP/CTGF signaling.

2025-04-26 | GSE203068 | GEO

Irisin Ameliorates Intervertebral Disc Degeneration by Activating LATS/YAP/CTGF Signaling.

Project description:Unbalanced metabolism of an extracellular matrix (ECM) in nucleus pulposus cells (NPCs) is widely acknowledged as the primary cause of intervertebral disc degeneration (IDD). Irisin, a novel myokine, is cleaved from fibronectin type III domain-containing 5 (FNDC5) and has recently been proven to regulate the metabolism of ECM. However, little is known about its potential on NPCs and the development of IDD. Therefore, this study sought to examine the protective effects and molecular mechanism of irisin on IDD in vivo and in vitro. Decreased expression levels of FNDC5 and anabolism markers (COL2A1 and ACAN) but increased levels of catabolism markers (ADAMTS4) were found in degenerative nucleus pulposus (NP) tissues. In a punctured-induced rat IDD model, irisin treatment was found to significantly slow the development of IDD, and in TNF-α-stimulated NPCs, irisin treatment partly reversed the disorder of ECM metabolism. In mechanism, RNA-seq results suggested that irisin treatment affected the Hippo signaling pathway. Further studies revealed that with irisin treatment, the phosphorylation levels of key factors (LATS and YAP) were downregulated, while the expression level of CTGF was upregulated. Moreover, CTGF knockdown partially eliminated the protective effects of irisin on the metabolism of ECM in NPCs, including inhibiting the anabolism and promoting the catabolism. Taken together, this study demonstrated that the expression levels of FNDC5 were decreased in degenerative NP tissues, while irisin treatment promoted the anabolism, inhibited the catabolism of the ECM in NPCs, and delayed the progression of IDD via LATS/YAP/CTGF signaling. These results shed light on the protective actions of irisin on NPCs, leading to the development of a novel therapeutic target for treating IDD.

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