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-N2518
    Agnuside
    Inhibitor 99.90%
    Agnuside is used in the study of asthma, inflammation, and angiogenic diseases. Agnuside is an orally active compound that can be extracted from Vitex negundo.
    Agnuside
  • HY-136744
    Caspase-9 Inhibitor III
    Inhibitor 98.78%
    Caspase-9 Inhibitor III (Ac-LEHD-cmk) is a caspase-9 inhibitor. Caspase-9 Inhibitor III exhibits protective effects on ischemia-reperfusion-induced myocardial injury.
    Caspase-9 Inhibitor III
  • HY-B0739A
    Citicoline sodium
    Inhibitor 99.77%
    Citicoline sodium is an endogenous intermediate in the synthesis of phosphatidylcholine which is a component of cell membranes. Citicoline sodium inhibits reactive oxygen species (ROS) and apoptosis. Citicoline sodium can be used for neurological disease and hearing loss study.
    Citicoline sodium
  • HY-N1423R
    Glycocholic acid (Standard)
    Activator
    Glycocholic acid (Standard) is the analytical standard of Glycocholic acid (HY-N1423). This product is intended for research and analytical applications. Glycocholic acid is a bile acid with anticancer activity, targeting against pump resistance-related and non-pump resistance-related pathways.
    Glycocholic acid (Standard)
  • HY-157396
    JAB-2485
    Activator 99.87%
    JAB-2485 is an orally active and selective Aurora kinase A (AURKA) inhibitor with an IC50 value of 0.327 nM. JAB-2485 exhibits inhibitory activity against various tumor cell lines such as neuroblastoma, triple-negative breast cancer, small cell lung cancer, and epithelial ovarian cancer. JAB-2485 can induce cell cycle arrest and apoptosis in tumor cells. JAB-2485 has antitumor activity.
    JAB-2485
  • HY-N1431
    Tabersonine
    Inhibitor 98.13%
    Tabersonine is a selective, orally active NLRP3 inhibitor. Tabersonine directly binds to the NACHT domain of NLRP3, inhibiting its ATPase activity and oligomerization, thereby blocking ASC spot formation and caspase-1 activation, and reducing the release of pro-inflammatory cytokines such as IL-1β. Tabersonine also inhibits K63-linked ubiquitination of TRAF6, blocking NF-κB, PI3K/Akt, and p38 MAPK signaling pathways. Tabersonine can inhibit inflammatory responses, induce apoptosis of liver cancer cells through mitochondrial pathways and death receptor pathways, reduce mitochondrial membrane potential, promote cytochrome c release, and activate caspase proteins. Tabersonine is mainly used in the study of NLRP3-driven inflammatory diseases (such as acute lung injury, sepsis, peritonitis) and tumors such as liver cancer.
    Tabersonine
  • HY-113041
    Prostaglandin A2
    Activator 99.9%
    Prostaglandin A2 (PGA2) is a Cyclopentenone prostaglandin. Prostaglandin A2 induces Caspase-dependent Apoptosis, activates p53. Prostaglandin A2 activates ERK2 and JNK1/SAPK. Prostaglandin A2 shows antiviral activity against HSV-1. Prostaglandin A2 has anti-tumor effects. Prostaglandin A2 can be used for the research of colorectal cancer, colorectal carcinoma, breast carcinoma, and herpetic keratitis.
    Prostaglandin A2
  • HY-19696B
    Tauroursodeoxycholate dihydrate
    Inhibitor 99.96%
    Tauroursodeoxycholate dehydrate is an orally active taurine conjugate of Ursodeoxycholic acid (HY-13771). Tauroursodeoxycholate dehydrate inhibits caspase-3/7, Apoptosis, IRE1α/TRAF2/NF-κB, prevents JNK phosphorylation, inhibits ROS generation, and activates Akt signaling. Tauroursodeoxycholate dehydrate prevents cataract formation, reduces renal tubular damage in type 2 diabetic mice, reduces I/R injury in liver, and inhibits intestinal inflammation and barrier disruption in nonalcoholic fatty liver disease.
    Tauroursodeoxycholate dihydrate
  • HY-W020958
    Ru(acac)3
    Activator 99.9%
    Ru (acac) 3 (Tris (acetylacetonato) ruthenium (III)) is a caspase-3 activator and Apoptosis inducer. Ru (acac) 3 exerts growth inhibitory effects on various cell lines in vitro by inhibiting DNA/RNA synthesis and inducing mild reversible S-phase cell cycle arrest. Ru (acac) 3 is commonly used in research related to ovarian cancer, osteosarcoma, cervical cancer, melanoma, and other fields.
    Ru(acac)3
  • HY-N0534
    Vitexin-2"-O-rhamnoside
    Inhibitor 99.78%
    Vitexin-2"-O-rhamnoside is an orally active flavonoid glycoside. Vitexin-2"-O-rhamnoside inhibits Apoptosis, increases the phosphorylation levels of PI3K/Akt, inhibits caspase-3, SOD activity, and promotes cytokine (IL-2, IL-6, and IL-12) secretion. Vitexin-2"-O-rhamnoside strongly inhibits DNA synthesis in MCF-7 cells with an IC50 of 17.5 μM. Vitexin-2"-O-rhamnoside enhances immune function and improves the absorption of active compounds. Vitexin-2"-O-rhamnoside has antioxidant activity. Vitexin-2"-O-rhamnoside is used in the study of cardiovascular disease and immune-related diseases.
    Vitexin-2
  • HY-16366
    Briciclib
    Activator 99.45%
    Briciclib (ON 014185) is a eukaryotic translation initiation factor 4E (eIF4E) inhibitor. Briciclib exhibits broad-spectrum anti-cancer activity, including in mantle cell leukemia, breast cancer, gastric cancer, and esophageal cancer cells. Briciclib reduces the expression of cyclin D1 and c-Myc, and enhances the expression of P53 and Cleaved Caspase 3 pro-apoptotic proteins. Briciclib can be used for the study of hematological system tumors and solid tumors.
    Briciclib
  • HY-N2420
    Flavokawain A
    Activator 99.73%
    Flavokawain A is a chalcone compound and an orally active inhibitor of PRMT5 and cytochrome P450. Flavokawain A has anti-inflammatory, anti-tumor, and immunomodulatory effects. Flavokawain A can inhibit the proliferation of tumor cells and induce apoptosis. Flavokawain A can be used in the research of diseases such as bladder cancer.
    Flavokawain A
  • HY-W042191
    Oxychlororaphine
    Activator 98.98%
    Oxychloroaphine could be isolated from the bacterium Pantoea agglomerans naturally present in soil. Oxychloroaphine has broad-spectrum antifungal activity. Oxychloroaphine has cytotoxicity in a dose-dependent manner and induces apoptosis. Oxychloroaphine can be used in research of cancer.
    Oxychlororaphine
  • HY-14654S
    Aspirin-d3
    Activator 99.84%
    Aspirin-d3 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>3</sub>
  • HY-123230
    Trifloxystrobin
    99.49%
    Trifloxystrobin (CGA 279202) is a type of fungicide. Trifloxystrobin has toxicity, antiparasitic activity and induce apoptosis, oxidative stress and DNA damage. Trifloxystrobin can be used for the reaesrch of fungal diseases.
    Trifloxystrobin
  • HY-N6046
    Kamebakaurin
    Activator 99.64%
    Kamebakaurin is an orally active diterpenoid compound that can be isolated from Isodon excia (Maxin.). Kamebakaurin can inhibit NF-κB activation by directly targeting the DNA-binding activity of p50. Kamebakaurin can induce apoptosis and cell cycle arrest in tumor cells. Kamebakaurin has anti-inflammatory and anti-tumor activities.
    Kamebakaurin
  • HY-P2970
    Stem bromelain
    Activator
    Stem bromelain (EC 3.4.22.32) is a cysteine protease and antibacterial agent. Stem bromelain can be isolated from the stem of the pineapple (Ananas comosus). Stem bromelain induces dose-dependent secretion of IL-12p70, and IL-6, induces Apoptosis, causes cleavage of full-length PARP protein, Caspase 3, and Caspase 9, increases Bax, and decreases Bcl-2. Stem bromelain possesses various fibrinolytic, antiedema, antithrombotic, and anti-inflammatory activities. Stem bromelain also exhibits in vivo antitumor and antileukemic activities, as well as antimetastatic effects. Stem bromelain has antimycobacterial activity. Stem bromelain provides protection against lead poisoning.
    Stem bromelain
  • HY-N0840
    Bruceantin
    Activator 99.94%
    Bruceantin ((-)-Bruceantin) is a quassinoid found in B. javanica. Bruceantin activates caspase signaling pathway, causes the mitochondrial dysfunction, inhibits cell proliferation, induces cell differentiation and apoptosis. Bruceantin exhibits anti-leukemia and antiprotozoal activities.
    Bruceantin
  • HY-122883
    BC-1471
    Inhibitor 99.69%
    BC-1471 is a STAMBP deubiquitinase inhibitor with an IC50 of 0.33 μM. BC-1471 can inhibit the activity of the NALP7 inflammasome. BC-1471 has anti-inflammatory activity and can be used for the research of inflammatory diseases.
    BC-1471
  • HY-179078
    CT-179
    Activator 99.61%
    CT-179 is a brain-penetrant and orally active OLIG2 inhibitor with a human IC50 of 1250 nM. CT-179 disrupts OLIG2 dimerization, phosphorylation, and DNA binding, blocking OLIG2-driven transcription. CT-179 induces G2/M phase arrest and increases G0 population. CT-179 induces apoptosis by reducing anti-apoptotic proteins and increasing cleaved caspase-3 and cleaved PARP. CT-179 can be used for the research of subgroup medulloblastoma.
    CT-179
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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