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4μ8C blocks substrate(RIDD) access to the active site of IRE1 and selectively inactivates both Xbp1 splicing and IRE1-mediated mRNA degradation. IRE1 inhibition subsequently induces ER stress without measureable acute toxicity. 4μ8C, as an IRE1 inhibitor, blocks IL-4, IL-5, and IL-13 production from CD4+ T cells.
| Cell Experiment | |
|---|---|
| Cell lines | Wild-type MEFs |
| Preparation method | Cells are seeded in phenol red-free cell culture medium in 96 or 24 well dishes at a density of 5 × 103 or 5 × 104 cells per well, respectively. Cultures are incubated for 16 h before treatment with 4μ8C for 24 h. Cultures are then analyzed by the addition of 200 μM WST1 and 10 μM phenazine metho-sulfate. After development of the reagent for 2 h at 37°C, the hydrolyzed dye is detected by absorbance at 450 nm, after subtracting background and absorbance at 595 nm. Alternatively, cell viability is determined by staining of the adherent culture with crystal violet. Quantitation of the dye uptake is analyzed by extensive washing of the stained cells with water and solublization of the crystal violet in methanol followed by absorbance measurements at 595 nm. |
| Concentrations | ~128 μM |
| Incubation time | 24 hours |
| Animal Experiment | |
|---|---|
| Animal models | |
| Formulation | |
| Dosages | |
| Administration | |
| Molecular Weight | 204.18 |
| Formula | C11H8O4 |
| CAS Number | 14003-96-4 |
| Solubility (25°C) | DMSO 18 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Related IRE1 Products |
|---|
| BDM44768
BDM44768 is an inhibitior of IDE. |
| IRE1α kinase-IN-5
IRE1α kinase-IN-5 is a potent IRE1α inhibitor with an Ki of 98 nM. |
| Z4P
Z4P is a BBB-permeable IRE1 inhibitor (IC50: 1.11 μM). |
| IRE1α kinase-IN-9
IRE1α kinase-IN-9 is a potent IRE-1α inhibitor, exhibits an average IC50 value of <0.1 μM. |
| IRE1α kinase-IN-8
IRE1α kinase-IN-8, a benzoheterocyclecarboxaldehyde derivative, is a potent IRE-1α inhibitor. |
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