Synovial mesenchymal stem cell paracrine signaling

"Synovial mesenchymal stem cell paracrine signaling" refers not to a discrete therapeutic target, but to the complex biological process where transplanted or endogenous mesenchymal stem cells (MSCs)—often sourced from synovium or bone marrow—modulate the local cellular environment by secreting a broad range of factors (cytokines, growth factors, exosomes) that regulate immune response, suppress inflammation, promote tissue repair, and support cartilage regeneration. These paracrine actions improve joint homeostasis, influence macrophage polarization from pro-inflammatory to anti-inflammatory phenotypes, regulate T cell responses, and interact with local tissues to reduce osteoarthritis progression and facilitate healing. The "engraftment" of these MSCs refers to their ability to localize within tissue and exert these effects, but the therapeutic benefit often derives primarily from their **secreted factors** rather than durable cellular integration[1][3][6].

Other names

Mesenchymal stem cell engraftment and paracrine effectMSC paracrine signalingSynovial MSC signalingMSC secretome