1. Signaling Pathways
  2. Apoptosis
  3. Caspase

Caspase

Caspase is a family of cysteine proteases that play essential roles in apoptosis (programmed cell death), necrosis, and inflammation. There are two types of apoptotic caspases: initiator (apical) caspases and effector (executioner) caspases. Initiator caspases (e.g., CASP2, CASP8, CASP9, and CASP10) cleave inactive pro-forms of effector caspases, thereby activating them. Effector caspases (e.g., CASP3, CASP6, CASP7) in turn cleave other protein substrates within the cell, to trigger the apoptotic process. The initiation of this cascade reaction is regulated by caspase inhibitors. CASP4 and CASP5, which are overexpressed in some cases of vitiligo and associated autoimmune diseases caused by NALP1 variants, are not currently classified as initiator or effector in MeSH, because they are inflammatory enzymes that, in concert with CASP1, are involved in T-cell maturation.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-119272
    EF24
    Activator 99.34%
    EF24, a curcumin analogue, is an NF-kB inhibitor with great anti-tumor efficacy and oral bioavailability via deactivation of the MAPK/ERK signaling pathway in oral squamous cell carcinoma (OSCC). EF24 is active against melanoma and breast cancer cell lines with GI50 values of 0.7 μM and 0.8 μM, respectively. EF24 induces cell cycle arrest and apoptosis in MDA-MB-231 human breast cancer cells and DU-145 human prostate cancer cells. EF24 increases the levels of activated caspase 3 and 9, and decreases the phosphorylated forms of MEK1 and ERK.
    EF24
  • HY-126741
    Azadirachtin
    Activator 99.06%
    Azadirachtin is an oral active triterpenoid compound with anticancer, antimalarial, anti-inflammatory, and insecticidal activities. Azadirachtin induces cell apoptosis through the mitochondrial pathway (by inhibiting Bcl-2/Bax ratio or activating Apaf-1 and caspase-3) or through death receptors (by inhibiting TNFR activation). Additionally, Azadirachtin exerts its anti-inflammatory effects by inhibiting NF-кB signaling pathway activation, and it exhibits insecticidal activity by inducing apoptosis in insect cells.
    Azadirachtin
  • HY-N0716A
    Berberine hemisulfate
    Inhibitor 99.63%
    Berberine hemisulfate is the hemisulfate form of Berberine (HY-N0716). Berberine hemisulfate is an alkaloid isolated from the Chinese herbal medicine Huanglian. Berberine hemisulfate exhibits anti-inflammatory, antibiobic, antitumor, cardiovascular protective and neuroprotective activity.
    Berberine hemisulfate
  • HY-W075517
    ZIF-8
    Activator
    ZIF-8 (2-Methylimidazole zinc salt) is an anticancer agent that intrinsically induces pyroptosis through a caspase-1/gasdermin D (GSDMD)-dependent pathway.
    ZIF-8
  • HY-10805
    Almorexant
    Activator 99.96%
    Almorexant (ACT 078573) is an orally active, potent and competitive dual orexin receptor antagonist, with Kd values of 1.3 nM (OX1) and 0.17 nM (OX2), respectively. Almorexant reversibly blocks signaling of orexin-A and orexin-B peptides. Almorexant totally blocked the intracellular Ca2+ signal pathway. Almorexant stimulates caspase-3 activity in AsPC-1 cells and induces apoptosis.
    Almorexant
  • HY-N0763
    Angelicin
    Activator 99.98%
    Angelicin is a furanocoumarin compound that functions as an inhibitor of NF-κB and MAPK signaling pathways, exhibiting anti-inflammatory, antiviral, and antitumor activities. It suppresses the lytic replication of γ-herpesviruses, such as MHV-68, early during viral infection, potentially inhibiting RTA gene expression (IC50=28.95 μM). Angelicin also mitigates inflammation by inhibiting the phosphorylation and nuclear translocation of NF-κB, and the phosphorylation of p38 and JNK. Furthermore, it induces apoptosis in neuroblastoma cells by downregulating anti-apoptotic proteins like Bcl-2, Bcl-xL, and Mcl-1, while activating caspase-9 and caspase-3.
    Angelicin
  • HY-N8423
    α-Amyrin
    Inducer 99.94%
    α-Amyrin is a pentacyclic triterpenoid compound with oral activity. α-Amyrin activates the ERK and GSK-3β signaling pathways. α-Amyrin can inhibit cancer cells proliferation and induce apoptosis. α-Amyrin shows anti-bacterial and anti-inflammation activity. α-Amyrin can reduce blood glucose level. α-Amyrin can be used for the researches of cancer, infection, inflammation, metabolic disease and neurological disease, such as breast cancer, Streptococcus oralis infection, skin inflammation and diabetes.
    α-Amyrin
  • HY-P99053
    Tralokinumab
    Inhibitor 99.12%
    Tralokinumab (CAT354) is a humanized IgG4 monoclonal antibody that specifically binds to and neutralizes IL-13. Tralokinumab can be used in the research of diseases such as asthma, atopic dermatitis, and pulmonary fibrosis.
    Tralokinumab
  • HY-129960
    L-Selenocystine
    Inhibitor 98.0%
    L-Selenocystine is a selenium-containing amino acid. L-Selenocystine has redox properties. L-Selenocystine is cytotoxic to various tumor cells and can induce the production of ROS and apoptosis. L-Selenocystine can block the Nrf2 and autophagy pathways. L-Selenocystine has anti-tumor activity.
    L-Selenocystine
  • HY-N5042
    Forsythoside I
    Inhibitor 99.94%
    Forsythoside I is an orally active caffeoyl phenylethanoid glycoside (CPG) that can be isolated from Forsythia suspense (Thunb.) Vahl. Forsythoside I has anti-inflammatory activity and can exert a protective effect in a mouse model of acute lung injury.
    Forsythoside I
  • HY-N3584
    Paris saponin VII
    Inhibitor 99.96%
    Paris saponin VII (Chonglou Saponin VII) is a steroidal saponin isolated from the roots and rhizomes of Trillium tschonoskii. Paris saponin VII-induced apoptosis in K562/ADR cells is associated with Akt/MAPK and the inhibition of P-gp. Paris saponin VII attenuates mitochondrial membrane potential, increases the expression of apoptosis-related proteins, such as Bax and cytochrome c, and decreases the protein expression levels of Bcl-2, caspase-9, caspase-3, PARP-1, and p-Akt. Paris saponin VII induces a robust autophagy in K562/ADR cells and provides a biochemical basis in the treatment of leukemia.
    Paris saponin VII
  • HY-101019
    Ossirene
    Inhibitor ≥98.0%
    Ossirene (AS101), an immunomodulatory tellurium compound, is a potent IL-1β inhibitor. Ossirene abolishes phosphorylation of STAT3 by inhibiting IL-10. Ossirene potently inhibits Caspase-1 and is used for the autoimmune diseases and certain malignancies.
    Ossirene
  • HY-136241
    OT-82
    Activator 99.95%
    OT-82 is a potent, selective and orally active inhibitor of NAMPT. OT-82 is selectively toxic to cells of hematopoietic origin and?induces cell death in a NAD+ dependent manner. OT-82 is a promising antineoplastic agent for the study of hematological malignancies.
    OT-82
  • HY-B0987
    Ascorbyl palmitate
    Activator 99.62%
    Ascorbyl palmitate is an orally active ester formed from ascorbic acid and palmitic acid, used as an antioxidant and food additive. Ascorbyl palmitate in preventing fat and oil oxidation is more efficient than Butylated hydroxyanisole (HY-B1066) and Butylated hydroxytoluene (HY-Y0172). Ascorbyl palmitate mitigates inhibition of collagen synthesis by select calcium and sodium channel blockers. Ascorbyl palmitate induces Apoptosis in human umbilical vein endothelial cells (HUVECs). Ascorbyl palmitate ameliorates inflammatory diseases by inhibition of NLRP3 inflammasome.
    Ascorbyl palmitate
  • HY-17583
    Griseofulvin
    98.93%
    Griseofulvin is an orally active antifungal antibiotic with antitumor activity. Griseofulvin induces apoptosis and G2/M cell cycle arrest in cancer cells. Griseofulvin also has cardiovascular modulatory activity, reducing angina pectoris, relieving hand artery spasm associated with onychomycosis, and peripheral vascular diseases such as shoulder-hand syndrome.
    Griseofulvin
  • HY-P10004
    Z-Ala-Ala-Asp-CMK
    Inhibitor 98.14%
    Z-Ala-Ala-Asp-CMK (Z-AAD-CMK) is a selective granzyme B inhibitor. By binding to the active site of granzyme B, Z-Ala-Ala-Asp-CMK blocks its proteolytic function. Z-Ala-Ala-Asp-CMK has anti-inflammatory activity and can be used in the research of inflammatory diseases and cancer.
    Z-Ala-Ala-Asp-CMK
  • HY-N0876
    Arenobufagin
    99.86%
    Arenobufagin is a natural bufadienolide that can be extracted from toad venom. Arenobufagin can induce apoptosis and autophagy in human hepatocellular carcinoma cells through inhibition of PI3K/Akt/mTOR pathway. Arenobufagin has potent antineoplastic activity against HCC HepG2 cells as well as corresponding multidrug-resistant HepG2/ADM cells. Arenobufagin can inhibit VEGF-mediated angiogenesis through suppression of VEGFR-2 signaling pathway.
    Arenobufagin
  • HY-19204
    Zinc phthalocyanine
    Activator 98.0%
    Zinc phthalocyanine (ZnPc) is commonly applied in industry (catalysts, photoconductors) and biomedical (photodynamic therapy, PDT). Zinc phthalocyanine can be used to photooxidise cyclohexane and is promising for research of solar-cell applications.
    Zinc phthalocyanine
  • HY-145765
    JQAD1
    Inducer 98.24%
    JQAD1 is a CRBN-dependent PROTAC that selectively targets EP300 for degradation. JQAD1 suppresses EP300 expression and the H3K27ac modification. JQAD1 induces apoptosis. JQAD1 can be used in research of cancer.
    JQAD1
  • HY-13981
    Ligandrol
    Activator 99.93%
    Ligandrol is an orally active, selective androgen receptor (AR) agonist. Ligandrol enhances protein synthesis, inhibits muscle breakdown and oxidative stress, improves muscle cell viability and bone tissue microstructure, and reduces Cisplatin (HY-17394)-induced muscle toxicity and apoptosis. Ligandrol promotes muscle growth, protects bone structure, and has anti-diabetic, anti-apoptotic and antioxidant effects. Ligandrol can antagonize Streptozotocin (HY-13753) damage to pancreatic islets and improve the symptoms of type 2 diabetes.
    Ligandrol
Cat. No. Product Name / Synonyms Species Source
Cat. No. Product Name / Synonyms Application Reactivity

Upon binding to their cognate ligand, death receptors such as Fas and TRAILR can activate initiator Caspases (Pro-caspase 8 and Pro-caspase 10) through dimerization mediated by adaptor proteins such as FADD and TRADD. Active Caspase 8 and Caspase 10 then cleave and activate the effector Caspase 3, 6 and 7, leading to apoptosis. ROS/DNA damage and ER stress trigger Caspase 2 activation. Active Caspase 2 cleaves and activates Caspase 3 and initiates apoptosis directly. Caspase 2, 8 and 10 can also cleave Bid, stimulate mitochondrial outer membrane permeabilization (MOMP) and initiate the intrinsic apoptotic pathway. Following MOMP, mitochondrial intermembrane space proteins such as Smac and Cytochrome C are released into the cytosol. Cytochrome C interacts with Apaf-1, triggering apoptosome assembly, which activates Caspase 9. Active Caspase 9, in turn, activates Caspase 3, 6 and 7, leading to apoptosis. Mitochondrial release of Smac facilitates apoptosis by blocking the inhibitor of apoptosis (IAP) proteins. 

 

Following the binding of TNF to TNFR1, TNFR1 binds to TRADD, which recruits RIPK1, TRAF2/5 and cIAP1/2 to form TNFR1 signaling complex I. Formation of the complex IIa and complex IIb is initiated either by RIPK1 deubiquitylation mediated by CYLD or by RIPK1 non-ubiquitylation due to depletion of cIAPs. The Pro-caspase 8 homodimer in complex IIa and complex IIb generates active Caspase 8. This active Caspase 8 in the cytosol then carries out cleavage reactions to activate downstream executioner caspases and thus induce classical apoptosis[1][2]

 

Reference:

[1]. Thomas C, et al. Caspases in retinal ganglion cell death and axon regeneration. Cell Death Discovery volume 3, Article number: 17032 (2017).
[2]. Brenner D, et al. Regulation of tumour necrosis factor signalling: live or let die. Nat Rev Immunol. 2015 Jun;15(6):362-74.

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