Schizophyllan (SPG) is an extracellular beta-glucan produced by the fungus *Schizophyllum commune*. Schizophyllan improves mitochondrial function and protects against metabolic liver injury by activating the SIRT3 pathway. Schizophyllan inhibits osteoclastogenesis and promotes osteoblast differentiation by suppressing the phosphorylation of JNK/p38, as well as downregulating PGC1beta/PPARgamma, c-Fos and NFATc1. Recognized via Dectin-1, schizophyllan enables precise delivery of oligonucleotide drugs and antigens to antigen-presenting cells, thus holding great potential in the treatment of inflammatory diseases and vaccine development[1][2][3].
