IRE1 Antagonist
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PAIR2
0 ImagesCat. No.: HY-145425CAS No.: 2771006-54-1PAIR2 is a highly selective inhibitor targeting the kinase domain of human IRE1α, with a Ki value of 8.8 nM against human IRE1α. PAIR2 fully occupies the ATP-binding site of the IRE1α kinase domain, partially antagonizes the ribonuclease activity of IRE1α, specifically inhibits regulated IRE1α-dependent decay (RIDD) and its mediated substrate cleavage, while preserving the splicing function of Xbp1 mRNA. PAIR2 also promotes the differentiation of B cells into plasma cells, blocks IRE1α-induced cell apoptosis, and restores the expression of Fgfr2 mRNA in AT2 cells. PAIR2 effectively reaches a steady-state concentration in the lung tissues of Mus musculus, and serves as an important tool for investigating the function of the IRE1α signaling pathway in diseases such as pulmonary fibrosis.
