Multiple cartilage and inflammatory pathways

The term Multiple cartilage and inflammatory pathways refers to a complex network of signaling cascades, including the Wnt pathway and various cytokine-mediated responses, that regulate joint health and disease (Yazici et al., 2020, Osteoarthritis and Cartilage). This is not a single molecular target but rather a functional grouping of pathways involved in chondrocyte differentiation, cartilage matrix synthesis, and the inflammatory milieu of the synovium. It is most prominently discussed in the context of Lorecivivint (SM04690), an intra-articular small-molecule inhibitor of CDC-like kinases (CLKs) and dual-specificity tyrosine-phosphorylation-regulated kinases (DYRKs) developed for the treatment of osteoarthritis (Deshmukh et al., 2019, American College of Rheumatology). In degenerative joint diseases, these pathways are typically dysregulated, leading to accelerated cartilage breakdown and chronic synovial inflammation. By targeting the kinases that regulate the splicing and activity of key proteins within these pathways, therapeutic agents aim to simultaneously promote chondrogenesis and reduce the expression of inflammatory mediators like TNF-alpha and IL-6 (Tambiah et al., 2021, RMD Open). This multi-pronged approach is intended to provide both symptomatic relief and structural modification in patients with osteoarthritis.

Other names

Cartilage and inflammatory signaling networksWnt and inflammatory pathways in osteoarthritisChondrogenic and inflammatory pathways

Modulation of gene expression and protein splicing through the inhibition of CDC-like kinases (CLKs) and dual-specificity tyrosine-phosphorylation-regulated kinases (DYRKs) to influence Wnt signaling and cytokine production.