| Bioactivity | AF12198 is a potent, selective and specific peptide antagonist for human type I interleukin-1 receptor (IL1-R1) (IC50=8 nM) but not the human type II receptor (IC50=6.7 µM) or the murine type I receptor (IC50>200 µM). AF12198 inhibits IL-1-induced IL-8 production (IC50=25 nM) and IL-1-induced intercellular adhesion molecule-1 (ICAM-1) expression (IC50=9 nM) in vitro. AF12198 has anti-inflammatory activities and blocks responses to IL-1 in vivo[1]. | ||||||
| Invitro | AF12198 competes for binding of 125I-IL-1α with an IC50 of 8.0 nM, nearly equal to that of IL-1ra, IC50 of 4.0 nM for the type I receptor[1].AF12198 (0-5 ng; 8 hours) inhibits IL-6 induction with an IC50 of 15 μM whereas IL-1ra inhibits with an IC50 of 2 nM in heparinized human primate blood. Meanwhile, With blood from cynomolgus monkeys, the IC50 values are 17 μM for AF12198 and 30 nM for IL-1ra. Additionally, AF12198 or IL-1RA alone does not induce IL-6 in blood from either humans or cynomolgus monkeys[1]. | ||||||
| Name | AF12198 | ||||||
| CAS | 185413-30-3 | ||||||
| Sequence | Ac-Phe-Glu-Trp-Thr-Pro-Gly-Trp-Tyr-Gln-{Aze}-Tyr-Ala-Leu-Pro-Leu-NH2 | ||||||
| Shortening | Ac-FEWTPGWYQ-{Aze}-YALPL-NH2 | ||||||
| Formula | C96H123N19O22 | ||||||
| Molar Mass | 1895.12 | ||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||
| Storage | Sealed storage, away from moisture and light, under nitrogen
*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen) |
AF12198
CAS: 185413-30-3 F: C96H123N19O22 W: 1895.12
AF12198 is a potent, selective and specific peptide antagonist for human type I interleukin-1 receptor (IL1-R1) (IC50=8
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