AMG PERK 44 (AMG44) is an orally active (F = 46% (mouse) & 55% (rat) post 2.5 mg/kg po.), active site-targeing, potent and highly selective PERK (EIF2AK3) inhibitor (IC50 = 6 nM; GCN2 IC50 = 7.3 μM, b-Raf IC50 >1 μM, <65% inhibition at 1 μM against 387 kinases). AMG44 inhibits cellular PERK autophosphorylation (pT980 IC50 = 84 nM; HT1080 T-REx-PERK-FLAG transfectants) and ER stress-induced bulk protein synthesis (IC50 = 400 nM; U2OS), as well as PERK pT980 in HT1080 Matrigel plug implant in mice in vivo (ED50 = 3 mg/kg & ED90 = 60 mg/kg 4 hr post po.).
Orally active, potent and highly selective tool compound for probing PERK (EIF2AK3) pathway both in vitro and in vivo.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Listings
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Journal of medicinal chemistry, 58(3), 1426-1441 (2015-01-15)
The structure-based design and optimization of a novel series of selective PERK inhibitors are described resulting in the identification of 44 as a potent, highly selective, and orally active tool compound suitable for PERK pathway biology exploration both in vitro
Cell death & disease, 10(10), 690-690 (2019-09-20)
Patients with aggressive brain tumors, named glioblastoma multiforme (GBM), have a poor prognoses. Here we explored if the ER stress/unfolded protein response (UPR) is involved in the pathophysiology of GBM and may provide novel therapeutic targets. Immunohistochemical analyses of a
Saxagliptin (Saxa), a dipeptidyl dipeptidase-4 (DPP-4) inhibitor, is widely used for the treatment of type 2 diabetes mellitus. It has been documented to have immunomodulatory and anti-inflammatory actions. Our objective was to delineate the protective effect and the underlying mechanism
Cell death and differentiation, 24(6), 1100-1110 (2017-04-30)
Accumulation of unfolded proteins in the endoplasmic reticulum (ER) causes a state of cellular stress known as ER stress. The cells respond to ER stress by activating the unfolded protein response (UPR), a signaling network emerging from the ER-anchored receptors
IRE1, PERK, and ATF6 are the three transducers of the mammalian canonical unfolded protein response (UPR). GSK2606414 is a potent inhibitor of PERK, while KIRA6 inhibits the kinase activity of IRE1. Both molecules are frequently used to probe the biological
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
![PERK Inhibitor I, GSK2606414 GSK2606414 is a cell-permeable, highly potent inhibitor of EIF2AK3/PERK (IC₅₀ = 0.4 nM; [ATP] = 5 µM). Targets PERK in its inactive DFG conformation at the ATP-binding region.](/deepweb/assets/sigmaaldrich/product/structures/180/559/efa716dc-d5fe-4339-a6f0-0103084fc04a/640/efa716dc-d5fe-4339-a6f0-0103084fc04a.png)
