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-P1010
    Z-LEHD-FMK
    Inhibitor ≥98.0%
    Z-LEHD-FMK is a selective and irreversible inhibitor of caspase-9, protects against lethal reperfusion injury and attenuates apoptosis. Z-LEHD-FMK exhibits the neuroprotective effect in a rat model of spinal cord trauma.
    Z-LEHD-FMK
  • HY-13610A
    N1,N11-Diethylnorspermine tetrahydrochloride
    Activator 99.82%
    N1, N11-Diethylnorspermine tetrahydrochloride (DENSPM tetrahydrochloride) is a potent anticancer agent. N1,N11-Diethylnorspermine tetrahydrochloride activates polyamine catabolism and downregulates mTOR protein. N1,N11-Diethylnorspermine tetrahydrochloride induces the release of cytochrome c from mitochondria, resulting in activation of caspase 3. N1,N11-Diethylnorspermine tetrahydrochloride kills glioblastoma multiforme (GBM) through induction of SSAT (spermidine/spermine N1-acetyltransferase) coupled with H2O2 production.
    N1,N11-Diethylnorspermine tetrahydrochloride
  • HY-114544A
    N-3-oxo-dodecanoyl-L-homoserine lactone
    Activator 99.88%
    N-3-oxo-dodecanoyl-L-Homoserine lactone (3-oxo-C12-HSL) is a bacterial quorum-sensing signaling molecule produced by P. aeruginosa and strains of the B. cepacia complex.Quorum sensing is a regulatory system used by bacteria for controlling gene expression in response to increasing cell density.N-3-oxo-dodecanoyl-L-Homoserine lactone induces the production of IL-8 in 16HBE human bronchial epithelial cells.
    N-3-oxo-dodecanoyl-L-homoserine lactone
  • HY-P9958
    Denosumab
    Inhibitor 99.10%
    Denosumab is a human monoclonal antibody that targets the protein RANKL. Denosumab binds to the receptor activator of nuclear factor kappa-B ligand (RANKL) and prevents its binding to the RANK receptor (KD of 0.003 nM for human RANKL). Denosumab promotes proliferation and spermatogenesis. Denosumab prevents bone resorption through inhibition of the NF-κB pathway. Denosumab can be used in bone-related studies.
    Denosumab
  • HY-132591
    Inclisiran
    Inhibitor 99.48%
    Inclisiran is a double-stranded small interfering RNA (siRNA) molecule. Inclisiran inhibits the transcription of PCSK9. Inclisiran inhibits Pyroptosis, activates PPARγ, and reduces NLRP3, cleaved caspase-1, IL-1β, and IL-18. Inclisiran has anti-inflammatory, lipid-regulating and anti-atherosclerotic activities. Inclisiran can be used in researches of hyperlipidemia and cardiovascular disease (CVD).
    Inclisiran
  • HY-B0739
    Citicoline
    Inhibitor 99.57%
    Citicoline is an endogenous intermediate in the synthesis of phosphatidylcholine which is a component of cell membranes. Citicoline inhibits reactive oxygen species (ROS) and apoptosis. Citicoline can be used for neurological disease and hearing loss study.
    Citicoline
  • HY-N0551
    Wedelolactone
    Inhibitor 99.93%
    Wedelolactone suppresses LPS-induced caspase-11 expression by directly inhibits the IKK Complex. Wedelolactone also inhibits 5-lipoxygenase (5-Lox) with an IC50 of 2.5 μM. Wedelolactone induces caspase-dependent apoptosis in prostate cancer cells via downregulation of PKCε without inhibiting Akt. Wedelolactone can extract from Eclipta alba, and it can be used for the research of cancer.
    Wedelolactone
  • HY-171006
    IRF1-IN-1
    Inhibitor 99.72%
    IRF1-IN-1 (Compound I-2) is an IRF1 inhibitor. IRF1-IN-1 decreases the recruitment of IRF1 to the promoter of CASP1. IRF1-IN-1 inhibits cell death signaling pathway (i.e., cleavage of Caspase 1, GSDMD, IL-1 and PARP1). IRF1-IN-1 has a protective effect on ionizing radiation-induced inflammatory skin injury.
    IRF1-IN-1
  • HY-N0568
    Madecassoside
    Inhibitor 99.58%
    Madecassoside is a pentacyclic triterpene isolated from Centella asiatica and has anti-inflammatory properties. Antioxidant and anti-aging effects. Madecassoside is a pentacyclic triterpene isolated from Centella asiatica. Madecassoside is orally active and has inhibitory properties against inflammation, oxidation, apoptosis and autophagy. Madecassosid inhibits activities of p38 MAPK and NF-kB, exhibits an anti-apopototic property, activates Nrf2 expression to reduce the neurotoxicity. Madecassoside can be used in endocrine diseases, cardiovascular diseases, skin diseases and other diseases.
    Madecassoside
  • HY-13523
    PAC-1
    Activator 99.88%
    PAC-1 is a procaspase-3 activator that induces apoptosis in cancer cells with an EC50 of 2.08 μM.
    PAC-1
  • HY-W010155
    Tryptophol
    99.96%
    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
  • HY-B1193
    Terfenadine
    Activator 99.98%
    Terfenadine ((±)-Terfenadine) is a potent open-channel blocker of hERG with an IC50 of 204 nM. Terfenadine, an H1 histamine receptor antagonist, acts as a potent apoptosis inducer in melanoma cells through modulation of Ca2+ homeostasis. Terfenadine induces ROS-dependent apoptosis, simultaneously activates Caspase-4, -2, -9.
    Terfenadine
  • HY-14521
    Lometrexol
    Inducer 99.44%
    Lometrexol (DDATHF), an antipurine antifolate, can inhibit the activity of glycinamide ribonucleotide formyltransferase (GARFT) but do not induce detectable levels of DNA strand breaks. Lometrexol can further inhibit de novo purine synthesis, causing abnormal cell proliferation and apoptosis, even cell cycle arrest. Lometrexol has anticancer activity. Lometrexol also is a potent human Serine hydroxymethyltransferase1/2 (hSHMT1/2) inhibitor.
    Lometrexol
  • HY-W040329
    2'-Deoxyadenosine
    Activator 99.99%
    2′-Deoxyadenosine is an adenine nucleoside that inhibits glucose-stimulated insulin release. 2′-Deoxyadenosine inhibits glucose-stimulated increases seen in islet cyclic AMP (cAMP) accumulation. 2'-Deoxyadenosine activates caspase-3 and promotes apoptosis. 2'-Deoxyadenosine inhibits the activity of S-adenosyl-L-homocysteine hydrolase (SAHH). 2'-Deoxyadenosine inhibits the growth of various cells. 2'-Deoxyadenosine has an anticancer effect on colon cancer.
    2'-Deoxyadenosine
  • HY-124476
    Cystamine
    Inhibitor 99.85%
    Cystamine is the disulfide form of the free thiol, cysteamine. Cystamine is an orally active transglutaminase (Tgase) inhibitor. Cystamine also has inhibition activity for caspase-3 with an IC50 value of 23.6 μM. Cystamine can be used for the research of severals diseases including Huntington's disease (HD) .
    Cystamine
  • HY-X0009
    Tambiciclib
    Activator 99.21%
    Tambiciclib (GFH009, JSH-009) is an orally active, highly potent and selective CDK9 inhibitor (IC50 = 1 nM), demonstrating >200-fold selectivity over other CDKs, >100-fold selectivity over DYRK1A/B, and excellent selectivity over 468 kinases/mutants. Tambiciclib demonstrates potent in vitro and in vivo antileukemic efficacy in acute myeloid leukemia (AML) mouse models by inhibiting RNA Pol II phosphorylation, downregulating MCL1 and MYC, and inducing apoptosis. Tambiciclib can be used for AML research.
    Tambiciclib
  • HY-14654R
    Aspirin (Standard)
    Activator
    Aspirin (Standard) is the analytical standard of Aspirin. This product is intended for research and analytical applications. 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 (Standard)
  • HY-W004283
    Pentadecanoic acid
    Activator 99.94%
    Pentadecylic acid is a saturated fatty acid with a 15-carbon backbone.
    Pentadecanoic acid
  • HY-P10004
    Z-Ala-Ala-Asp-CMK
    Inhibitor 99.08%
    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-P99111
    Golimumab
    Inhibitor 99.77%
    Golimumab (CNTO-148) is a potent human IgG1 TNFα antagonist monoclonal antibody. Golimumab has anti-inflammation activitity and inhibits IL-6 and IL-1β production. Golimumab acts via targeting and neutralizing TNF to prevent inflammation and destruction of cartilage and bone. Golimumab has the anticancer activity and induces cell apoptosis. Golimumab can be used for rheumatoid arthritis, Crohn's disease and cancer research.
    Golimumab
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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