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-157088
    C105SR
    Inhibitor 99.49%
    C105SR is a cyclophilin D (CypD) inhibitor targeting to peptidyl-prolylcis-trans isomerase (PPIase). C105SR inhibits mitochondrial permeability transition opening (mPTP) with an IC 50 of 5 nM. C105SR inhibits hypoxia and reoxygenation inudced hepatocyte apoptosis and increases the level of calcium retention capacity (CRC). C105SR exhibits hepaprotective effect in ischaemia-reperfusion injury (IRI) mouse model.
    C105SR
  • HY-P10939A
    Ac-DMLD-CMK TFA
    Inhibitor 98.44%
    Ac-DMLD-CMK TFA is a polypeptide targeting the mouse caspase 3-Gsdme signaling pathway. Ac-DMLD-CMK TFA can specifically inhibit the activation of caspase 3 and Gsdme. Ac-DMLD-CMK TFA blocks the cleavage of Gsdme by caspase 3, inhibits the occurrence of pyroptosis, thereby reducing renal tubular epithelial cell injury and the secretion of inflammatory cytokines. Ac-DMLD-CMK TFA reduces the levels of serum creatinine and blood urea nitrogen in mice induced by Cisplatin (HY-17394) and alleviates the deterioration of kidney function. Ac-DMLD-CMK TFA is promising for research of chemotherapy drug-induced nephrotoxicity.
    Ac-DMLD-CMK TFA
  • HY-108164
    Aspidin BB
    Activator 98.08%
    Aspidin BB is a phloroglucinol derivative, which can be isolated from the aerial part of Dryopteris championii. Aspidin BB has anticancer activity. Aspidin BB induces cell cycle arrest and apoptosis in human ovarian HO-8910 cells.
    Aspidin BB
  • HY-147929
    Apoptotic agent-3
    Activator
    Apoptotic agent-3 (compound 15f) promotes apoptosis through the potential mitochondria-mediated Bcl-2/Bax pathway and activation of the Caspase 3 pathway. Apoptotic agent-3 exhibits anti-proliferative activities and can be used for cancer research.
    Apoptotic agent-3
  • HY-N2027R
    Taurochenodeoxycholic acid (Standard)
    Taurochenodeoxycholic acid (Standard) is the analytical standard of Taurochenodeoxycholic acid. This product is intended for research and analytical applications. Taurochenodeoxycholic acid (12-Deoxycholyltaurine) is one of the main bioactive substances of animals' bile acid. Taurochenodeoxycholic acid induces apoptosis and shows obvious anti-inflammatory and immune regulation properties[1][2].
    Taurochenodeoxycholic acid (Standard)
  • HY-B1971R
    Deltamethrin (Standard)
    Deltamethrin (Standard) is the analytical standard of Deltamethrin. This product is intended for research and analytical applications. Deltamethrin (Decamethrin) is an orally active synthetic pyrethroid insecticide. Deltamethrin induces oxidative stress and results in inflammation and apoptosis via inhibiting Nrf2/HO-1 pathway. Deltamethrin has an anticancer effect by inducing apoptosis. Deltamethrin can be used extensively in pest control.
    Deltamethrin (Standard)
  • HY-14654S1
    Aspirin-d4
    Activator
    Aspirin-d4 is the deuterium labeled Aspirin (HY-14654). Aspirin (Acetylsalicylic acid) is an orally active, potent and irreversible inhibitor of cyclooxygenase COX-1 and COX-2, with IC50 values of 5 and 210 μg/mL, respectively. Aspirin induces apoptosis. Aspirin inhibits the activation of NF-κB. Aspirin also inhibits platelet prostaglandin synthetase, and can prevent coronary artery and cerebrovascular thrombosis.
    Aspirin-d<sub>4</sub>
  • HY-151966
    TD1092
    Activator 99.49%
    TD1092 is a pan-IAP degrader, degrades cIAP1, cIAP2, and XIAP. TD1092 activates Caspase 3/7, and promotes cancer cells apoptosis via IAP degradation. TD1092 inhibits TNFα mediated NF-κB pathway and reduces the phosphorylation of IKK, IkBα, p65, and p38. TD1092 can act as PROTAC, and is used for cancer research.
    TD1092
  • HY-W750342
    Tryptophol-d4
    Inhibitor 99.97%
    Tryptophol-d4 (Indole-3-ethanol-d4) is the deuterium labeled Tryptophol (HY-W010155). Tryptophol is an aromatic alcohol and secondary metabolite produced by microorganisms. Tryptophol induces apoptosis and cleavage of caspase-8. Tryptophol inhibits Cunninghamella blakesleeana biofilm. Tryptophol has anti-phage infection, biofilm formation regulation, anti-inflammatory, hemolytic, sleep induction, temperature change, seizure susceptibility and immune regulation activities. Tryptophol is used in the research of African trypanosomiasis, sleep disorders, epilepsy.
    Tryptophol-d<sub>4</sub>
  • HY-NP019
    Agkistrodon halys batroxobin
    Inhibitor
    Agkistrodon halys batroxobin is a thrombin-like serine protease. Agkistrodon halys batroxobin reduces the expression of Sirt1 and extracellular signal-regulated kinase activation in brain tissue. Agkistrodon halys batroxobin reduces cleaved caspase-3 expression and inhibits neuronal apoptosis in rat.
    Agkistrodon halys batroxobin
  • HY-118304B
    AKN-028 acetate
    Activator 98.38%
    AKN-028 acetate, a novel tyrosine kinase (TK) inhibitor, is a potent, orally active FMS-like receptor tyrosine kinase 3 (FLT3) inhibitor with an IC50 value of 6 nM. AKN-028 acetate inhibits FLT3 autophosphorylation. AKN-028 acetate induces dose-dependent cytotoxic response (mean IC50=1 μM). AKN-028 acetate induces apoptosisby activation of caspase 3. AKN-028 acetate can be used in research of acute myeloid leukemia (AML).
    AKN-028 acetate
  • HY-130437
    p-nitro-Pifithrin-α
    Inhibitor
    p-nitro-Pifithrin-α, a cell-permeable analog of pifithrin-α, is a potent p53 inhibitor. p-nitro-Pifithrin-α suppresses p53-mediated TGF-β1 expression in HK-2 cells. p-nitro-Pifithrin-α inhibits the activation of caspase-3 by Zika virus (ZIKV) strains. p-nitro-Pifithrin-α attenuates steatosis and liver injury in mice fed a high-fat diet [4]. non-alcoholic fatty liver disease.
    p-nitro-Pifithrin-α
  • HY-175282
    ASX-173
    Agonist
    ASX-173 is an orally active inhibitor of asparagine synthetase (ASNS) (IC50 = 0.113 μM, Ki = 0.4 nM). ASX-173 enhances the anticancer activity of L-asparaginase (ASNase) (HY-P1923). ASX-173 disrupts nucleotide synthesis and induces leukemia cell cycle arrest, apoptosis and autophagy in leukemia cells in combination with ASNase. ASX-173 slows the growth of OCI-AML2 xenografts in combination with ASNase. ASX-173 is indicated for the study of acute lymphoblastic leukemia, acute myeloid leukemia, colorectal cancer, and other cancers.
    ASX-173
  • HY-10131
    Procaspase-3/6 activator 1
    Activator 99.45%
    Procaspase-3/6 activator 1 (compound 1541) is a highly specific and robust activator of executioner procaspases-3 and -6, with EC50 values of 2.4 ± 0.2 and 2.8 ± 0.3 μM, respectively. Procaspase-3/6 activator 1 does not activate procaspases-1 or -7.
    Procaspase-3/6 activator 1
  • HY-W004283R
    Pentadecanoic acid (Standard)
    Activator
    α-Linolenic acid (Standard) is the analytical standard of α-Linolenic acid. This product is intended for research and analytical applications. α-Linolenic acid, isolated from Perilla frutescens, is an essential fatty acid that cannot be synthesized by humans. α-Linolenic acid can affect the process of thrombotic through the modulation of PI3K/Akt signaling. α-Linolenic acid possess the anti-arrhythmic properties and is related to cardiovascular disease and cancer.
    Pentadecanoic acid (Standard)
  • HY-100573A
    (E/Z)-Necrosulfonamide
    Inhibitor 98.84%
    (E/Z)-Necrosulfonamide is a racemic compound of Necrosulfonamide (HY-100573). Necrosulfonamide is a MLKL and Gasdermin D (GSDMD) inhibitor, capable of separately inhibiting necroptosis and pyroptosis of cells. Necrosulfonamide does not affect the activation of upstream signals, but specifically inhibits the downstream executor oligomerization step. Necrosulfonamide reduces the expression of the key kinases NLRP3 and caspase-1 involved in necroptosis and pyroptosis, activate the Nrf2 pathway and the downstream antioxidant enzymes, and also downregulates a variety of inflammatory factors. Necrosulfonamide plays significant roles in various diseases such as neurodegenerative diseases (such as Parkinson’s disease), tissue damage and ischemia-reperfusion injury, inflammatory bowel disease, osteoarthritis and fracture repair, and hair loss by regulating two important programmed necrosis pathways.
    (E/Z)-Necrosulfonamide
  • HY-162858
    BRD-810
    Agonist 98.00%
    BRD-810 is a potent and selective MCL1 inhibitor with a Kd of 0.3 nM. BRD-810 can specifically block the BH3 binding groove of MCL1, while having little effect on other anti-apoptotic proteins (such as Bcl-2, Bcl-xL). BRD-810 effectively destroys the MCL1-BAK complex (IC50 = 1.2 nM) in cancer cells, rapidly activates Caspase and induces cell apoptosis. BRD-810 can be used in the research of various cancers such as hematological tumors and solid tumors.
    BRD-810
  • HY-101997
    BEPP hydrochloride
    Activator
    BEPP hydrochloride is a double-stranded RNA-dependent protein kinase (PKR) inducer and antiviral agent. BEPP hydrochloride effectively inhibits the growth of human lung cancer cell lines overexpressing PKR and induces apoptosis and activates caspase-3 in sensitive cells. In addition, BEPP hydrochloride can also significantly inhibit vaccinia virus replication.
    BEPP hydrochloride
  • HY-N4238
    Dehydrocorydaline nitrate
    Activator 99.90%
    Dehydrocorydaline nitrate (13-Methylpalmatine nitrate) is an alkaloid. Dehydrocorydaline regulates protein expression of Bax, Bcl-2; activates caspase-7, caspase-8, and inactivates PARP. Dehydrocorydaline nitrate elevates p38 MAPK activation. Anti-inflammatory and anti-cancer activities.. Dehydrocorydaline nitrate shows strong anti-malarial effects (IC50 =38 nM), and low cytotoxicity (cell viability > 90%) using P. falciparum 3D7 strain.
    Dehydrocorydaline nitrate
  • HY-P1095
    Ivachtin
    Inhibitor 99.71%
    Ivachtin (Caspase-3 Inhibitor VII; compound 7a) is a nonpeptide, noncompetitive and reversibl caspase-3 inhibitor with an IC50 of 23 nM. Ivachtin has modest selectivity for the remaining caspases.
    Ivachtin
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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