2. Signaling Pathways
  3. Cell Cycle/DNA Damage
  4. PERK

PERK

Protein kinase R-like endoplasmic reticulum kinase; PKR-like endoplasmic reticulum kinase

PERK

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Protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK) is one of four known kinases that respond to cellular stress by deactivating the eukaryotic initiation factor 2 α (eIF2α) or other signal transduction cascades. PERK is highly expressed in pancreatic beta-cells and is essential in the beta-cell's development, differentiation and function.

PERK is a type I ER membrane protein containing a stress-sensing domain facing the ER lumen, a transmembrane segment, and a cytosolic kinase domain. Increase in unfolded proteins in the ER causes release of ER chaperones from the stress-sensing domain of PERK, which results in its activation via oligomerization and autophosphorylation at multiple serine, threonine, and tyrosine residues. Upon activation, PERK phosphorylates eIF2α at serine 51, rendering it an inhibitor of the ribosome translation initiation complex, consequently reducing overall protein synthesis. The reduction in translation reduces the ER burden, providing time for the cell to process or degrade the accumulated unfolded proteins to restore ER homeostasis. Although global protein synthesis is decreased, there is specific increased translation of certain mRNAs, such as ATF4, which modulate cellular survival pathways and enhance UPR function. Interfering with PERK function in cancer cells may limit their ability to thrive under hypoxia or nutrient deprived conditions and lead to apoptosis or tumor growth inhibition.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-157231A
    HC-5404-Fu
    		Inhibitor 98.92%
    HC-5404-Fu is an orally active PERK inhibitor with an IC50 of 0.001 μM against human PERK. HC-5404-Fu blocks PERK activation induced by VEGFR-TKI and disrupts the adaptive stress response triggered by VEGFR-TKI. HC-5404-Fu enhances anti-angiogenic effects by inhibiting newly formed and mature tumor blood vessels in renal cell carcinoma models. HC-5404-Fu can be used in research related to renal cell carcinoma.
    HC-5404-Fu
  • HY-101795
    Larixyl acetate
    		Inhibitor 99.44%
    Larixyl acetate is a potent and selective TRPC6 inhibitor with IC50 values of 0.58 μM and 6.83 μM against hTRPC6-YFP and hTRPC3-YFP, respectively. Larixyl acetate prevents HPV and is effective in protecting against traumatic brain injury-induced systemic endothelial dysfunction.
    Larixyl acetate
  • HY-N0924
    (±)-Stylopine
    		Inhibitor 99.86%
    (±)-Stylopine (Tetrahydrocoptisine) is an alkaloid compound. (±)-Stylopine can be isolated from the tubers of the plant Corydalis. (±)-Stylopine inhibits TNF-α, IL-6, and NO production, and attenuates phosphorylation of p38 MAPK, ERK1/2. (±)-Stylopine inhibits NF-κB expression. (±)-Stylopine exhibits anti-inflammatory activity. (±)-Stylopine has protective effects against foot edema, gastric ulcers, anxiety, depression, and acute lung injury.
    (±)-Stylopine
  • HY-135220
    PERK-IN-2
    		Inhibitor 99.29%
    PERK-IN-2 is a potent PERK inhibitor with an IC50 of 0.2 nM.
    PERK-IN-2
  • HY-111671
    VUBI1
    		Modulator 98.21%
    VUBI1 (SOS1 activator 1) is a benzimidazole derivative and SOS1 activator with a Kd of 44 nM. VUBI1 can significantly activate RAS-GTP and regulate the phosphorylation of ERK. VUBI1 also can serve as a target ligand for synthesizing PROTACs, such as PROTAC SOS1 degrader-1 (HY-145737), to induce SOS1 degradation. VUBI1 can be used in the study of cancer.
    VUBI1
  • HY-112056
    DIM-C-pPhCO2Me
    		99.47%
    DIM-C-pPhCO2Me is a nuclear receptor 4A1 (NR4A1) antagonist. DIM-C-pPhCO2Me induces Apoptosis. DIM-C-pPhCO2Me decreases PAX3-FOXO1A, N-Myc, Rassf4, MyoD1, Grem1, and DAPK1 proteins. DIM-C-pPhCO2Me decreases expression of TXNDC5 and IDH1, induces markers of ER stress (CHOP, ATF4 and p-PERK). DIM-C-pPhCO2Me inhibits renal cell carcinoma, breast cancer. DIM-C-pPhCO2Me can also be used in rhabdomyosarcoma research.
    DIM-C-pPhCO2Me
  • HY-137813
    PERK-IN-4
    		Inhibitor 98.21%
    PERK-IN-4 is a potent and selective PERK (protein kinase R (PKR)-like endoplasmic reticulum kinase) inhibitor with an IC 50 of 0.3 nM. PERK is activated in response to a variety of endoplasmic reticulum stresses implicated in numerous disease states.
    PERK-IN-4
  • HY-159649
    BMS-986408
    		Modulator 99.35%
    BMS-986408 is an orally active inhibitor of DGKα and DGKζ, with IC50 values of 0.0003 μM and 0.002 μM, respectively. BMS-986408 activates intratumoral T cell responses, enhances the priming and expansion of tumor-reactive T cells in tumor-draining lymph nodes, and functions as an immunostimulant. BMS-986408 can be used in the research of tumors.
    BMS-986408
  • HY-N0687
    Vindoline
    		Inhibitor 99.95%
    Vindoline is an orally active vinca alkaloid. Vindoline can be extracted from the leaves of Catharanthus roseus. Vindoline has a weak inhibitory effect on the self-assembly of tubulin. Vindoline alleviates Apoptosis, inhibits p-p65 and p-ERK. Vindoline improves diabetes, bone loss, osteoarthritis, and kidney damage.
    Vindoline
  • HY-N0911
    Rehmannioside A
    		Inhibitor 99.96%
    Rehmannioside A is a compound that can be isolated from Rehmanniae radix. Rehmannioside A is an inhibitor of CYP3A4, 2C9 and 2D6, with IC50 values of 10.08, 12.62 and 16.43 μM, respectively. Rehmannioside A has anti-inflammatory, antioxidant, anti-apoptosis, anti-ferroptosis, cognitive improvement and neuroprotective activities. Rehmannioside A can be used for the research of nervous system and inflammation-related diseases.
    Rehmannioside A
  • HY-116214
    Cyprodinil
    		Inducer 98.84%
    Cyprodinil (CGA-219417) is a broad-spectrum anilinopyrimidine fungicide and an activator of the aryl hydrocarbon receptor. Cyprodinil also has anti-androgenic and androgenic activities. Cyprodinil can inhibit the biosynthesis of methionine in plant-pathogenic fungi and protect fruits and vegetables from a variety of pathogens.
    Cyprodinil
  • HY-N5083
    Saponarin
    		Inhibitor 99.95%
    Saponarin is an orally active flavonoid compound. Saponarin can be isolated from Gypsophila trichotoma. Saponarin inhibits ERK/p38, NF-κB and MAPK phosphorylation and activates AMPK. Saponarin reduces IL-1β and COX-2. Saponarin has antioxidant, anti-inflammatory, hepatoprotective, hypoglycemic and hypotensive effects. Saponarin improves sleep disorders.
    Saponarin
  • HY-111237
    Butyrolactone I
    		99.80%
    Butyrolactone I is an orally active and ATP-competitive inhibitor of CDK1. Butyrolactone I inhibits NF-κB, cdc2 kinase, Bax, ROS production, modulates the PERK/CHOP. Butyrolactone I mitigates heat-stress-induced Apoptosis. Butyrolactone I shows anti-inflammatory and intestinal protective activity. Butyrolactone I has antitumor effects against non-small cell lung, small cell lung, prostate cancer and leukemia. Butyrolactone I can be used in NASH research.
    Butyrolactone I
  • HY-129138
    Cyanidin 3,5-diglucoside chloride
    		Inhibitor 99.44%
    Cyanidin 3,5-diglucoside chloride is an anthocyanin. Cyanidin 3,5-diglucoside chloride inhibits inflammatory cytokines (IL-1α, IL-1β, and IL-6) expression and NO production. Cyanidin 3,5-diglucoside chloride inhibits the phosphorylation of STAT3, IκB, ERK, p38, and AKT. Cyanidin 3,5-diglucoside chloride inhibits high pressure-induced decrease in GLAST. Cyanidin 3,5-diglucoside chloride exerts anti-inflammatory and skin barrier modulating effects. Cyanidin 3,5-diglucoside chloride can be used in retinal research.
    Cyanidin 3,5-diglucoside chloride
  • HY-158196
    PERK/eIF2α activator 1
    		Activator 98.88%
    PERK/eIF2α activator 1 (compound V8) is a flavonoid with an anti-tumor activity. PERK/eIF2α activator 1 induces apoptosis and activates the PERK-eIF2α-ATF4 pathway. PERK/eIF2α activator 1 inhibits HepG2 cell proliferation with an IC50 value of 23 μM.
    PERK/eIF2α activator 1
  • HY-N2445
    Flavokawain C
    		99.79%
    Flavokawain C is an orally active natural chalcone. Flavokawain C inhibits the proliferation of various cancer cells. Flavokawain C upregulates GADD153 in cancer cells, inhibits the phosphorylation of Akt and JNK, suppresses early ERK phosphorylation, activates late ERK phosphorylation, activates caspase related subtypes, induces PARP-1 cleavage, causes upregulation of p21 and p27, downregulation of mutant p53 and anti-apoptotic IAP proteins, elevates intracellular ROS levels, reduces SOD activity, and induces apoptosis. Flavokawain C downregulates FABP4, induces autophagy in cancer cells, and activates the AMPK/mTOR pathway. Flavokawain C decreases the expression of glycolysis-related proteins GLUT1 and HK2, and inhibits glycolysis in nasopharyngeal carcinoma cells. Flavokawain C inhibits the activation of the EGFR/PI3K/Akt/mTOR signaling pathway and reduces the expression of HSP90B1. Flavokawain C inhibits angiogenesis by decreasing the expression of angiogenic proteins Ang-1 and VEGF in human umbilical vein endothelial cells. Flavokawain C increases γ-H2AX levels in cells, inhibits the phosphorylation of FAK, PI3K and AKT in cells, and induces DNA damage in cells. Flavokawain C exerts anti-tumor activity in multiple tumor xenograft mouse models. Flavokawain C is applicable to research related to colorectal cancer, colon adenocarcinoma, nephroblastoma, nasopharyngeal carcinoma and liver cancer.
    Flavokawain C
  • HY-50670
    DGAT-1 inhibitor 2
    		Activator
    DGAT-1 inhibitor 2 is an orally active DGAT-1 inhibitor with IC50 values of 15 nM and 9 nM for human DGAT-1 and rat DGAT-1, respectively. DGAT-1 inhibitor 2 increases ROS concentration, GRP78, and PERK protein abundance. DGAT-1 inhibitor 2 increases SREBF1, CPT1A, and MTTP mRNA in fatty acid-treated cells. DGAT-1 inhibitor 2 improves obesity.
    DGAT-1 inhibitor 2
  • HY-W010451
    1,2,4-Trihydroxybenzene
    		Activator 99.96%
    1,2,4-Trihydroxybenzene (Hydroxyhydroquinone) is an ER stress inducer that targets proteins such as PKR-like ER kinase PERK to induce cytotoxicity. 1,2,4-Trihydroxybenzene selectively activates eIF2α phosphorylation, activates the PERK-eIF2α signaling pathway and induces stress granule formation. 1,2,4-Trihydroxybenzene subsequently exacerbates oxidative stress and causes DNA double-strand breaks, destroying organelles such as mitochondria and ER, and inducing cell death. 1,2,4-Trihydroxybenzene also has the potential to exhibit anti-tumor effect, increase blood pressure, and relieve spasm.
    1,2,4-Trihydroxybenzene
  • HY-N1198
    Strictosamide
    		Inhibitor 99.94%
    Strictosamide is a compound that can be isolated from Nauclea officinalis. Strictosamide has various activities such as anti-inflammatory, analgesic, anti-Plasmodium, antifungal, and promoting wound healing.
    Strictosamide
  • HY-101991
    ML291
    		Activator 99.80%
    ML291 is a UPR (unfolded protein response)-inducing sulfonamidebenzamide. ML291 overwhelms the adaptive capacity of the UPR and induces apoptosis in a variety of solid cancer models. ML291 can activate the PERK/eIF2a/CHOP (apoptotic) arm of the UPR and reduce leukemic cell burden.
    ML291
Cat. No. Product Name / Synonyms Application Reactivity