immunosuppression

Genipin ((+)-Genipin), an active aglycone derived from an iridoid glycoside called geniposide, is found in the fruit of Gardenia jasminoides Ellis.

Scoparone (Aesculetin dimethyl ether) can be found in a number of food items such as sweet orange, wild celery, mandarin orange (clementine, tangerine), and lemon. It is found in the Chinese herb Artemisia scoparia and has been studied for its potential pharmacological properties including immunosuppression and vasorelaxation. Scoparone is found in anise. Scoparone is found in several citrus oils.

Tacrolimus (FK506, Fujimycin) is a macrolide immunosuppressant that binds to FKBP12 to form a high-affinity complex (Ki = 0.2 nM), which inhibits calcineurin phosphatase activity, thereby suppressing T lymphocyte signal transduction and the transcription and release of IL-2. It exerts potent immunosuppressive effects and can be used to induce immunosuppression models.

Protosappanin A (PTA) has anti-oxidative nitrative activities on brain immune and neuroinflammation through regulation of CD14 TLR4-dependent IKK IκB NF-κB inflammation signal pathway; it exerts anti-neuroinflammatory effect by inhibiting JAK2-STAT3 pathway in lipopolysaccharide-induced BV2 microglia. Protosappanin A induces immunosuppression of rats heart transplantation targeting T cells in grafts via NF-kappaB pathway. Protosappanin A and protosappanin B have antimicrobial activity, they show both alone activities and resistance reversal effects of amikacin and gentamicin against MRSA. Protosappanin A shows strong effect against HIV-1 IN with an IC50 value of 12.6 uM.