R7050 是一种肿瘤坏死因子受体拮抗剂，对TNFα具有更高选择性。

R-7050 is a tumor necrosis factor receptor (TNFR) antagonist with greater selectivity toward TNFα.

R-7050 is a cell-permeable triazoloquinoxaline compound that selectively inhibits TNF-α induced cellular signaling. Unlike biologic TNF inhibitors (e.g. Infliximab, Etanercept, Adalimumab) that directly bind TNF-α and function as decoy receptors, R-7050 does not affect binding of TNF-α to TNFR. In contrast, R-7050 selectively inhibits the association of TNFR with intracellular adaptor molecules (e.g. TRADD, RIP), limits receptor internalization, and prevents subsequent cellular responses after TNF-α binding[2].

R-7050 (6 mg/kg) reduces Evans blue extravasation to 28.7±5.9 μg and 30.3±1.9 μg Evans blue/g brain tissue when administered at 0.5 h or 2 h post-ICH, respectively (p<0.05 and p<0.01 vs ICH, respectively; not significantly different from sham). Brain water content which is a measure of brain edema increases from 75.6±0.3% in sham-operated mice to 81.5±0.5% at 24h post-ICH (p<0.05 vs. sham). 6, 12, or 18 mg/kg R-7050 reduces brain water content to 78.5±0.3%, 78.3±0.3%, or 79.3±0.5%, respectively (all treatments p<0.05 vs. ICH; treatments not significantly different from each other). Notably, mice treated with 18 mg/kg exhibit a reduction in general activity/locomotion. As is observed with Evans blue extravasation, R-7050 (6 mg/kg) significantly reduces brain water content after ICH. Administration of R-7050 at 0.5h or 2h post-ICH attenuates brain water content to levels observed in sham-operated mice (p<0.05 vs ICH, not significantly different from sham)[2].

303997-35-5

C16H8ClF3N4S

380.77

TNF-α Antagonist III

DMSO:25 mg/mL
Powder: -20°C for 3 years
In solvent: -80°C for 2 years