Pro-inflammatory signaling in muscle cells

Pro-inflammatory signaling in muscle cells refers to the complex network of intracellular pathways, including NF-κB, JAK/STAT, and MAPK, that are activated in skeletal muscle in response to inflammatory stimuli (PMID: 17604310). These pathways are typically triggered by pro-inflammatory cytokines such as Tumor Necrosis Factor-alpha (TNF-α) and Interleukin-6 (IL-6), which are often elevated in chronic disease states like cancer cachexia, sarcopenia, and autoimmune myositis (PMID: 15550551). Activation of these signaling cascades leads to the upregulation of E3 ubiquitin ligases, such as MuRF1 and Atrogin-1, which promote muscle protein degradation and subsequent atrophy (PMID: 25681347). Furthermore, chronic pro-inflammatory signaling can impair muscle regeneration by inhibiting satellite cell activation and contributing to insulin resistance in metabolic disorders. While individual components of these pathways are targeted by drugs like TNF inhibitors or JAK inhibitors, the term itself describes a broad biological process rather than a single, discrete therapeutic target.

Other names

Muscle inflammation signalingMyogenic inflammatory pathwaysPro-inflammatory cytokine signaling in skeletal muscle

Inhibition of pro-inflammatory cytokines or their downstream signaling mediators to mitigate muscle wasting and inflammation.