Growth factor-responsive musculoskeletal cells via paracrine signaling

Growth factor-responsive musculoskeletal cells via paracrine signaling refers to a physiological system where musculoskeletal progenitor cells, such as mesenchymal stem cells (MSCs) or satellite cells, are activated by growth factors secreted by neighboring cells. This paracrine signaling network is essential for the maintenance, repair, and regeneration of tissues like bone, muscle, and cartilage (Caplan & Correa, 2011, Cell Stem Cell). Key growth factors involved in these interactions include Bone Morphogenetic Proteins (BMPs), Transforming Growth Factor-beta (TGF-beta), and Insulin-like Growth Factor 1 (IGF-1) (Gnecchi et al., 2008, Circ Res). In disease states such as osteoarthritis or sarcopenia, these signaling pathways may be disrupted, leading to impaired tissue healing and chronic degeneration (Molloy et al., 2003, Sports Med). Therapeutic approaches often aim to modulate this environment by delivering exogenous growth factors or using cell-based therapies that secrete regenerative signals. However, this term does not identify a specific protein or receptor, but rather a broad biological mechanism involving multiple molecular components. Consequently, it is not classified as a discrete therapeutic target in standard pharmacological databases.

Other names

Paracrine-mediated musculoskeletal regenerationGrowth factor-responsive musculoskeletal progenitorsParacrine signaling in musculoskeletal tissues

Activation of transmembrane receptor tyrosine kinases or serine/threonine kinase receptors on musculoskeletal cells via paracrine growth factor binding to stimulate intracellular signaling cascades such as MAPK/ERK or SMAD pathways.