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
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    PAMP-12 (unmodified) TFA
    PAMP-12 (unmodified) TFA is an endogenous peptide and is a MrgX2 agonist. PAMP-12 (unmodified) TFA can reduce cAMP accumulation, increase Ca2+ levels, enhance beta-arrestin recruitment, decrease IP-1, and increases phosphoERK. PAMP-12 (unmodified) TFA can elicit hypotension through inhibiting catecholamine secretion from sympathetic nerve endings and adrenal chromaffin cells. PAMP-12 (unmodified) TFA can be used for the research of hypotension and ulcerative colitis.
    PAMP-12 (unmodified) TFA
  • HY-N6908R
    Continentalic acid (Standard)
    		Modulator
    Continentalic acid (Standard) is the analytical standard of Continentalic acid (HY-N6908). This product is intended for research and analytical applications. Continentalic acid is a diterpenoid organic acid. Continentalic acid exhibits multiple activities including anti-inflammatory, antioxidant, neuroprotective, antibacterial and antitumor effects. Continentalic acid alleviates oxidative stress, reduces pro-inflammatory cytokine production, inhibits MAPK phosphorylation and neutrophil infiltration, and induces growth inhibition and apoptosis of cancer cells. Continentalic acid can be used in research related to traumatic brain injury, cancer, inflammation and infections.
    Continentalic acid (Standard)
  • HY-181817
    (S)-IP-DK143
    		Inhibitor
    (S)-IP-DK143 is a polymeric micellar formulation. (S)-IP-DK143 inhibits the proliferation of cervical cancer cells, induces ROS-mediated apoptosis, and triggers mitochondrial dysfunction. (S)-IP-DK143 activates the p38 MAPK signaling pathway, increases the phosphorylation level of p38. (S)-IP-DK143 can be used for the research of cervical cancer.
    (S)-IP-DK143
  • HY-179702
    KD36
    		Inhibitor
    KD36 is a selective KRAS-G12C inhibitor with an IC50 value of 0.92 μM. KD36 can inhibit the phosphorylation of ERK and AKT, induce the accumulation of reactive oxygen species (ROS), reduce mitochondrial membrane potential, thereby leading to apoptosis of KRAS-G12C mutant cells. KD36 can be used in the research of non-small cell lung cancer (NSCLC).
    KD36
  • HY-139612B
    (Rac)-Opnurasib
    (Rac)-Opnurasib ((Rac)-JDQ-443; (Rac)-NVP-JDQ443) is the levorotomer of Opnurasib (HY-139612). Opnurasib is an orally active, potent, selective, and covalent KRAS G12C inhibitor (extracted from patent WO2021120890A1). Opnurasib shows antitumor activity.
    (Rac)-Opnurasib
  • HY-180786
    DdBIC
    		Activator
    DdBIC is a pyroptosis inducer. DdBIC binds to Nur77 and triggers its translocation to mitochondria, activates SDHA to deplete succinyl-CoA, disrupts heme homeostasis, induces electron leakage, and elicits mitochondrial ROS production. DdBIC induces mitochondrial ROS that oxidatively activates OMA1, promotes OPA1 cleavage and its release into the cytoplasm, activates the integrated stress response via PERK, and ultimately activates granzyme B to cleave GSDMC. DdBIC can be used for the study of melanoma.
    DdBIC
  • HY-106159
    SB-T-101141
    SB-T-101141 is a novel taxane. SB-T-101141 effectively induces a noncanonical ferroptosis to overcome Paclitaxel (HY-B0015) resistance of breast cancer. SB-T-101141 facilitates the production of iron and ferrous ions and ROS. SB-T-101141 stably binds to KHSRP to inhibit the iron-dependent expression of CISD1 related to iron homeostasis. SB-T-101141 synergistically enhances the iron-dependent activation of JNK and PERK pathways via KHSRP. SB-T-101141 suppresses breast tumor growth in MCF-7(PR)/MDA-MB-231(PR) or KHSRP knock-down MCF-7 xenograft mice model.
    SB-T-101141
  • HY-P10757
    DTX-P7
    		Activator
    DTX-P7 is a peptide-drug conjugate. DTX-P7, composed of Docetaxel (DTX, HY-B0011) and a heptapeptide (P7), induces unfolded protein response and subsequent apoptosis by degrading Hsp90.
    DTX-P7
  • HY-182360
    Cytisine-platinum(IV) prodrug-1
    Cytisine-Platinum(IV) Prodrug-1 is a Pt(IV) prodrug incorporating the natural compound Cytisine (HY-N0175) with antiproliferative activity against tumor cells. Cytisine-Platinum(IV) Prodrug-1 promotes calcium transfer across the IP3R1-GRP75-VDAC1 axis to drive mitochondrial calcium overload. Cytisine-Platinum(IV) Prodrug-1 initiates unfolded protein response via PERK, eIF2α, ATF4, and CHOP to modulate Bcl-2 and Bax, triggering apoptosis. Cytisine-Platinum(IV) Prodrug-1 induces mitochondrial dysfunction, ROS production, reduced ATP synthesis, DNA damage, and S-phase cell cycle arrest. Cytisine-Platinum(IV) Prodrug-1 activates the cGAS-STING pathway, reduces PD-L1 expression, drives immunogenic cell death. Cytisine-Platinum(IV) Prodrug-1 exhibits high physiological stability, efficient cellular accumulation, and enhanced platinum-DNA binding, and inhibits tumor growth in mouse models with reduced systemic toxicity. Cytisine-Platinum(IV) Prodrug-1 can be used for the research of lung cancer.
    Cytisine-platinum(IV) prodrug-1
  • HY-183316
    Anticancer agent 319
    		Inhibitor
    Anticancer agent 319 is an anticancer agent. Anticancer agent 319 inhibits the proliferation of liver cancer cells. Anticancer agent 319 inhibits AKT phosphorylation and blocks the PI3K/AKT signaling axis; meanwhile, it inhibits ERK1/2 phosphorylation and blocks the MAPK/ERK signaling axis. Anticancer agent 319 induces G2/M phase cell cycle arrest, triggers apoptosis, and reduces mitochondrial membrane potential in liver cancer cells. Anticancer agent 319 can be used for the research of hepatocellular carcinoma.
    Anticancer agent 319
  • HY-112417
    Ki11502
    		Inhibitor 99.30%
    Ki11502 is a multi-targeted receptor tyrosine kinase (RTK) inhibitor that selectively inhibits the activity of PDGF β/α receptors with IC50 values less than 10 nM. Ki11502 selectively inhibits PDGF β receptor phosphorylation, proliferation, and proteoglycan synthesis in human vascular smooth muscle cells. Ki11502 can induce Apoptosis) and exhibits profound antiproliferative effects on select subsets of leukemia, including those with Imatinib (HY-15463) resistant mutations. Ki11502 is highly suitable for studying the role of PDGF in vascular diseases, particularly the role of proteoglycans in atherosclerosis.
    Ki11502
  • HY-101145
    CK37
    		Inhibitor
    CK37 is a competitive choline kinase-α inhibitor. CK37 inhibits purified recombinant human choline kinase-α activity. CK37 suppresses MAPK and PI3K/AKT signaling, disrupts actin cytoskeletal organization. CK37 diminishs activating phosphorylations of ERK. CK37 exhibits anticancer activity against cervical cancer, melanoma, Lewis lung carcinoma, lung adenocarcinoma, breast cancer, and leukemia.
    CK37
  • HY-181546
    Ibt-DOX
    		Inhibitor
    Ibt-DOX is a BTK inhibitor with an IC50 of 2.89 nM. Ibt-DOX is also a targeted covalent activated chemotherapeutic agent composed of the targeting ligand Ibrutinib (HY-10997), Doxorubicin (DOX) (HY-15142A), α-MAA (HY-W017180), and a linker (HY-Y0892). Ibt-DOX specifically binds to BTK and releases DOX, synergistically achieving BTK inhibition and chemotherapeutic killing, significantly enhancing toxicity against B-cell lymphoma cells and greatly reducing the toxic side effects of DOX on BTK-negative cells. Ibt-DOX can be used in lymphoma-related research.
    Ibt-DOX
  • HY-170849
    Nur77 modulator 4
    Nur77 modulator 4 (Compound 15h) is a Nur77 inducer with a KD of 0.477 μM. Nur77 modulator 4 significantly induces Nur77 expression and apoptosis, showing excellent growth inhibition in HepG2 and MCF-7 cells, with an IC50 of less than 5 μM. Nur77 modulator 4 activates Nur77-mediated ER stress through the PERK-ATF4 and IRE1 signaling pathways, thereby inducing cell apoptosis. Nur77 modulator 4 can be used in cancer research applications .
    Nur77 modulator 4
  • HY-P11831
    RD-pepcan-11
    		Activator
    RD-pepcan-11 is a CB1 receptor agonist. RD-pepcan-11 increases the relative phosphorylation level of ERK1/2. RD-pepcan-11 mediates analgesic effects through interaction with CB1 receptors in a carrageenan-induced mouse inflammatory pain model. RD-pepcan-11 can be used in studies related to inflammatory pain.
    RD-pepcan-11
  • HY-N3737
    Derrone
    		Inducer
    Derrone, a prenylated isoflavones, is an Aurora kinase inhibitor, with IC50 values of 6 and 22.3 μM against Aurora B and Aurora A, respectively. Derrone shows anti-tumor activity.
    Derrone
  • HY-182411
    KRAS-IN-56
    		Inhibitor
    KRAS-IN-56 (Compound 18) is a KRAS inhibitor with an EC50 of 33 μM. KRAS-IN-56 inhibits the interaction between GTP-KRAS and SOS1. KRAS-IN-56 induces a decrease in p-ERK levels. KRAS-IN-56 can be used in research related to lung cancer.
    KRAS-IN-56
  • HY-144693
    MEK/PI3K-IN-2
    		Inhibitor
    MEK/PI3K-IN-2 (compound 6s) is a potent MEK/PI3K inhibitor, with IC50 values of 352 nM (MEK1), 107 nM (PI3Kα), and 137 nM (PI3Kδ), respectively. MEK/PI3K-IN-2 suppresses pAKT and pERK1/2 levels. MEK/PI3K-IN-2 shows anti-proliferative activity against tumor cell lines.
    MEK/PI3K-IN-2
  • HY-153010
    ER proteostasis regulator-1
    		Modulator ≥98.0%
    ER proteostasis regulator-1 (compound 481) is a potent ER proteostasis regulator. ER proteostasis regulator-1 has the potential for the research of Alzheimer's disease and diabetes.
    ER proteostasis regulator-1
  • HY-18318
    Takeda-6D
    		Inhibitor 99.41%
    Takeda-6D (compound 6d) is an orally active and potent BRAF/VEGFR2 inhibitor, with IC50 values of 7.0 and 2.2 nM, respectively. Takeda-6D shows antiangiogenesis by suppressing the VEGFR2 pathway in 293/KDR and VEGF-stimulated HUVEC cells.Takeda-6D shows significant suppression of ERK1/2 phosphorylation. Takeda-6D shows antitumor activity.
    Takeda-6D
Cat. No. Product Name / Synonyms Application Reactivity