AF12198

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.

Product information

CAS Number: 185413-30-3

Molecular Weight: 1895.12

Formula: C96H123N19O22

Chemical Name: (4S)-4-{[(1S)-1-{[(2S,3R)-1-[(2S)-2-[({[(1S)-1-{[(1S)-1-{[(2S)-4-carbamoyl-1-[(2S)-2-{[(1S)-1-{[(1S)-1-{[(2S)-1-[(2S)-2-{[(1S)-1-carbamoyl-3-methylbutyl]carbamoyl}pyrrolidin-1-yl]-4-methyl-1-oxopentan-2-yl]carbamoyl}ethyl]carbamoyl}-2-(4-hydroxyphenyl)ethyl]carbamoyl}azetidin-1-yl]-1-oxobutan-2-yl]carbamoyl}-2-(4-hydroxyphenyl)ethyl]carbamoyl}-2-(1H-indol-3-yl)ethyl]carbamoyl}methyl)carbamoyl]pyrrolidin-1-yl]-3-hydroxy-1-oxobutan-2-yl]carbamoyl}-2-(1H-indol-3-yl)ethyl]carbamoyl}-4-[(2S)-2-acetamido-3-phenylpropanamido]butanoic acid

Smiles: CC(=O)N[C@@H](CC1C=CC=CC=1)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC1=CNC2=CC=CC=C12)C(=O)N[C@@H]([C@@H](C)O)C(=O)N1CCC[C@H]1C(=O)NCC(=O)N[C@@H](CC1=CNC2=CC=CC=C12)C(=O)N[C@@H](CC1C=CC(O)=CC=1)C(=O)N[C@@H](CCC(N)=O)C(=O)N1CC[C@H]1C(=O)N[C@@H](CC1C=CC(O)=CC=1)C(=O)N[C@@H](C)C(=O)N[C@@H](CC(C)C)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(C)C)C(N)=O

InChiKey: VASLMBMCJADVGR-XQDBXYBUSA-N

InChi: InChI=1S/C96H123N19O22/c1-51(2)41-69(83(98)124)107-92(133)77-24-16-38-113(77)95(136)75(42-52(3)4)111-84(125)53(5)102-86(127)71(44-57-25-29-61(118)30-26-57)110-93(134)78-37-40-115(78)94(135)68(33-35-79(97)120)106-88(129)72(45-58-27-31-62(119)32-28-58)108-89(130)73(46-59-48-99-65-21-13-11-19-63(59)65)104-80(121)50-101-91(132)76-23-15-39-114(76)96(137)82(54(6)116)112-90(131)74(47-60-49-100-66-22-14-12-20-64(60)66)109-85(126)67(34-36-81(122)123)105-87(128)70(103-55(7)117)43-56-17-9-8-10-18-56/h8-14,17-22,25-32,48-49,51-54,67-78,82,99-100,116,118-119H,15-16,23-24,33-47,50H2,1-7H3,(H2,97,120)(H2,98,124)(H,101,132)(H,102,127)(H,103,117)(H,104,121)(H,105,128)(H,106,129)(H,107,133)(H,108,130)(H,109,126)(H,110,134)(H,111,125)(H,112,131)(H,122,123)/t53-,54+,67-,68-,69-,70-,71-,72-,73-,74-,75-,76-,77-,78-,82-/m0/s1

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO : 100 mg/mL (52.77 mM; Need ultrasonic).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 ^oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 ^oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

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. 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.

In Vivo:

AF12198 (intravenous infusion; 16 mg/kg; 30 min before LPS intravenous injection) significantly attenuates the increase in lung MPO activity induced by LPS in acute lung inflammation and it reduces the lung microvascular leakage from rats inflamed with LPS at the 4 h (32.6%), 12 h (50.1%) and 24 h (65.3%) after LPS.

Products are for research use only. Not for human use.