“…14 Interestingly, the Wharton's jelly mucoid connective tissue has a composition very similar to that of IVD ECM. 15,16 Notably, Wharton's Jelly is rich in matrix components such as hyaluronic acid, various types of collagens, and sulfated glycosaminoglycans; in addition, growth factors (FGF, IGFBP 1, 2, 3, 4, and 6) are present, together with TGF-α, GH, and PDGF-AA. Immunomodulatory cytokines (RANTES, IL-6R, and IL-16), pro-inflammatory cytokines (MCSFR, MIP-1a), anti-inflammatory cytokines (TNF-RI, TNF-RII, and IL-1RA), homeostatic cytokines (TIMP-1 and TIMP-2), cytokines associated with wound healing and regenerative properties (ICAM-1, G-CSF, GDF-15, MCP-1, and GDNF), and extracellular vesicles, are also present.…”