• Sequential activation of caspases plays a central role in the execution-phase of cell apoptosis. (wikipedia.org)
  • It has been shown to associate with several proteins involved in apoptosis using its CARD domain, including RIP-associated Ich-1/Ced-3-homologue protein with a death domain (RAIDD), apoptosis repressor with caspase recruitment domain (ARC), and death effector filament-forming Ced-4-like apoptosis protein (DEFCAP). (wikipedia.org)
  • Caspases, while dispensable for cell death during mitochondrial apoptosis, inhibit activation of pro-inflammatory pathways after MOMP. (nature.com)
  • Eldadah and Faden, 2000 ), we hypothesized that suppression of apoptotic capability during maturation of mammalian brain results from repression of genes involved in the caspase-3 activation pathway, and that injury-induced neuronal apoptosis in the mature brain results from reactivation of these genes. (jneurosci.org)
  • During apoptosis, Rb is subjected to cleavage by caspase-3 like protease. (novusbio.com)
  • Proteinase 3 sidesteps caspases and cleaves p21(Waf1/Cip1/Sdi1) to induce endothelial cell apoptosis. (mpg.de)
  • The caspases are a family of cysteine proteases that cleave after certain aspartate residues, and are primarily recognized as mediators of apoptosis. (enzolifesciences.com)
  • caspases are synthesized as inactive zymogens that can be cleaved to form active enzymes following the induction of apoptosis by stress or death receptors. (enzolifesciences.com)
  • Caspases are a family of calcium -dependent cysteine proteases , which play essential roles in apoptosis (programmed cell death), necrosis and inflammation . (wikidoc.org)
  • Caspases are essential in cells for apoptosis , one of the main types of programmed cell death in development and most other stages of adult life, and have been termed "executioner" proteins for their roles in the cell. (wikidoc.org)
  • this coupled with the unwanted apoptosis that occurs with ischaemia or Alzheimer's disease , has boomed the interest in caspases as potential therapeutic targets since they were discovered in the mid 1990s. (wikidoc.org)
  • The exact contribution that the cleavage of many caspase substrates makes to the biochemistry and morphology of apoptosis is unclear. (wikidoc.org)
  • The importance of caspases to apoptosis and programmed cell death was originally established by Robert Horvitz and colleagues who found that the ced-3 gene was required for the cell death that took place during the development of the nematode C. elegans . (wikidoc.org)
  • Caspases are cysteine proteases, expressed as inactive precursors, that mediate apoptosis by proteolysis of specific substrates. (neuromics.com)
  • Active caspase identifies multiple molecules as substrates and cleaves them, leading to biological events associated with apoptosis. (caltagmedsystems.co.uk)
  • The detection of caspase activity is crucial for apoptosis research. (caltagmedsystems.co.uk)
  • Caspase-3 cleaves the death substrate PARP to a specific 85 kDa form observed during apoptosis and is inhibitable by the CrmA protein. (thomassci.com)
  • Caspase 2 plays a role in APOPTOSIS by cleaving and activating effector pro-caspases. (umassmed.edu)
  • Mutations in CRADD Result in Reduced Caspase-2-Mediated Neuronal Apoptosis and Cause Megalencephaly with a Rare Lissencephaly Variant. (umassmed.edu)
  • One of the most consistently observed characteristics of apoptosis is the activation of a series of cytosolic proteases called caspases. (bdbiosciences.com)
  • Caspases are activated upon cleavage at aspartate residues during the earliest stages of apoptosis. (bdbiosciences.com)
  • Caspases-9, -8 and -3 have been implicated in apoptosis-caspase-9 in the mitochondrial pathway, caspase-8 in the Fas/CD95 pathway, and caspase-3 more downstream, activated by multiple pathways. (bdbiosciences.com)
  • Activated caspase-9 in turn cleaves and activates caspase-3 that is one of the key proteases, being responsible for the proteolytic cleavage of many key proteins in apoptosis (3). (novusbio.com)
  • Apoptosis is a genetically programmed process for the elimination of damaged or redundant cells by activation of caspases (aspartate-specific cysteine proteases). (kegg.jp)
  • Caspases are the key regulators of apoptosis. (spandidos-publications.com)
  • The most important enzymes involved in apoptosis are caspases, which hydrolyze important structural and functional proteins of the cell, ultimately leading to apoptosis. (spandidos-publications.com)
  • The inhibitor of apoptosis proteins (IAPs) inhibit apoptosis by interacting with and then regulating the functions of caspase-8 or caspase-9, -3 and -7 ( 9 , 11 , 12 ). (spandidos-publications.com)
  • Involved in the activation cascade of caspases responsible for apoptosis execution. (nih.gov)
  • BCL2 proteins are described as 'crucial regulators of apoptosis' (PMID:15868100)and the intrinsic apoptosis pathway is initiated by the release of mitochondrial cytochrome c into the cytoplasm, which results in the activation of caspases (15102863) - help in generating a defintion for intrinsic apoptosis? (geneontology.org)
  • should the term ['GO:0006919] activation of caspase activity' be a child of positive regulation of apoptosis or induction of apoptosis rather than directly to apoptosis? (geneontology.org)
  • def of apoptosis includes requirement for caspases - is this correct? (geneontology.org)
  • does all activation of caspases require other proteins also involved in apoptosis - therefore shouldn't this term be a part of apoptosis? (geneontology.org)
  • Apoptosis is a programmed form of cell death involving the degradation of cellular constituents by a group of cysteine proteases called caspases. (geneontology.org)
  • Although the presence of active caspases and DNA fragmentation is helpful in identifying possible apoptosis, they should not be employed as an exclusive means to demonstrate this process as apototic cell death can occur without DNA fragmentation or caspase activity. (geneontology.org)
  • We show that a cysteine-aspartic protease of the apoptosis cascade, caspase-6, serves as an important host factor for efficient coronavirus replication. (cdc.gov)
  • Active caspase-9, in turn, activates executioner caspases-3 and -7. (jneurosci.org)
  • It activates various caspases and cleaves proteins such as aggrecan (3). (rndsystems.com)
  • the apoptosome (regulated by cytochrome c and the Bcl-2 family ) which activates caspase-9 . (wikidoc.org)
  • Promotes apoptosome formation and activates caspase-9/caspase-3 pathway. (rndsystems.com)
  • For instance, caspase-3 indirectly activates CAD (caspase-activated deoxyribonuclease) while inactivating ICAD (inhibitor of caspase-activated deoxyribonuclease), which contributes to chromatin fragmentation in nucleosome units. (caltagmedsystems.co.uk)
  • This protein cleaves and activates caspases 6, 7 and 9, and the protein itself is processed by caspases 8, 9 and 10. (thermofisher.com)
  • Endoplasmic Reticulum Stress Activates the Inflammasome via NLRP3- and Caspase-2-Driven Mitochondrial Damage. (umassmed.edu)
  • Binding of caspase-9 to Apaf-1 leads to activation of the protease which then cleaves and activates caspase-3. (nih.gov)
  • It belongs to a family of cysteine proteases called caspases that cleave proteins only at an amino acid following an aspartic acid residue. (wikipedia.org)
  • The proteases involved are of different origins and types: (i) present as precursor in plasma, (ii) secreted into the plasma by activated platelets or other blood cells, or (iii) intracellularly activated and cleaving cytosolic receptor domains. (frontiersin.org)
  • Although these platelet activation processes are relatively well-studied as a function of the platelet environment, only since recently it is becoming clear that a multitude of proteases present in plasma or produced by platelets themselves are important for the distinct properties of platelet populations, often by cleaving specific receptors. (frontiersin.org)
  • They are called cysteine proteases , because they use a cysteine residue to cut those proteins, and are called caspases because the cysteine residue cleaves their substrate proteins at specific asparagine residues. (wikidoc.org)
  • Breaching the mitochondrial OM releases apoptogenic factors, including cytochrome c and DIABLO (also known as Smac), which activate a group of aspartate-specific proteases known as caspases ( Youle and Strasser, 2008 ). (biologists.com)
  • CASP3 , CASP6 , CASP7 ) in turn cleave other protein substrates within the cell resulting in the apoptotic process. (wikidoc.org)
  • BD Biosciences also offers a range of tools for caspase activity assays from individual fluorogenic peptide substrates and inhibitors, to kits, to ready-to-use assay plates. (bdbiosciences.com)
  • All are based on the use of synthetic tetrapeptide substrates that are designed such that proteolytic cleavage by active human or mouse caspases results in release of a fluorophore or chromophore. (bdbiosciences.com)
  • The individual synthetic tetrapeptide substrates, together with the caspase inhibitors and active caspase enzymes, offer flexibility in the experimental design of a caspase activity assay. (bdbiosciences.com)
  • Granzyme B, similarly to the caspases, cleaves its substrates after aspartic acid residues, suggesting that this protease has the ability to activate members of the caspase family directly. (kegg.jp)
  • Here we demonstrate that, during brain maturation, the potential of the intrinsic apoptotic pathway is progressively reduced and that such repression is associated with downregulation of apoptotic protease-activating factor-1 (Apaf-1) and caspase-3 gene expression. (jneurosci.org)
  • These results suggest that differential expression of Apaf-1 and caspase-3 genes may underlie regulation of apoptotic susceptibility during brain development, as well as after acute injury to mature brain, through the intrinsic pathway of caspase activation. (jneurosci.org)
  • Radiation induces caspase activation fundamentally via the mitochondrial pathway. (spandidos-publications.com)
  • Radiation and other agents induce caspase activation fundamentally via the mitochondrial pathway, which includes mitochondrial integration of apoptotic signals and the subsequent release of cytochrome c into the cytosol ( 5 , 9 , 10 ). (spandidos-publications.com)
  • By contrast, the extrinsic apoptotic pathway can activate caspases without the participation of mitochondria. (biologists.com)
  • However, in certain cell types, the extrinsic pathway also induces mitochondrial damage by cleaving the pro-apoptotic Bcl-2 family protein Bid to its activated truncated form (tBid), which leads to Bak and Bax activation. (biologists.com)
  • Because caspase-1 is a principle effector protease within the pyroptotic cell death pathway, it stands to reason that the intracellular detection of activated caspase-1 be a key indicator of a pyroptosis activity. (immunochemistry.com)
  • Furthermore, irradiation-induced pyroptosis is triggered by GSDME, which are cleaved by activated caspase-3 in the intrinsic mitochondrial pathway. (biomedcentral.com)
  • Caspases exist as inactive proenzymes that undergo proteolytic processing at conserved aspartic residues to produce two subunits, large and small, that dimerize to form the active enzyme. (wikipedia.org)
  • Caspases have the ability to cleave after aspartic acid residues. (neuromics.com)
  • Specificity is predominantly directed towards residues that occupy the S1 binding pocket, so that caspases cleave aspartyl bonds, legumains cleave asparaginyl bonds, and gingipains cleave lysyl or arginyl bonds. (embl.de)
  • They are first synthesized as inactive pro-caspases , that consist of a prodomain, a small subunit and a large subunit. (wikidoc.org)
  • The antibody recognizes an epitope in the large domain subunit of Caspase-3. (thermofisher.com)
  • As such it will recognize pro Caspase-3 and the large subunit cleavage fragment. (thermofisher.com)
  • Separase is a caspase-like cysteine protease, which plays a central role in triggering ANAPHASE by cleaving the SCC1/RAD21 subunit of the cohesin complex. (bvsalud.org)
  • Active Caspase-3 contains two p17 and two p12 subunits. (rndsystems.com)
  • MBLI 's APOPCYTO Caspase-3,8,9 Colorimetric Assay Kit detects caspase activity in cell extract with LEHD-pNA as a substrate, in which LEHD sequence is recognised by each active caspase selectively. (caltagmedsystems.co.uk)
  • After being activated by active cathepsin C, rhGranzyme B cleaves a thioester substrate described previously (3). (rndsystems.com)
  • Caspase-3 is a widely expressed dimeric peptidase that is the major executioner caspase, the primary downstream mediator of apoptotic-associated proteolysis. (rndsystems.com)
  • CASP2 , CASP8 , CASP9 and CASP10 ) cleave inactive pro-forms of effector caspases, thereby activating them. (wikidoc.org)
  • This allows them to autoactivate, so that they can then proceed to activate the effector caspases. (wikidoc.org)
  • These two pathways converge at the level of effector caspases, such as caspase-3 and caspase-7. (kegg.jp)
  • This gene encodes a protein which is a member of the cysteine-aspartic acid protease (caspase) family. (thermofisher.com)
  • Proteolytically cleaves poly(ADP-ribose) polymerase (PARP). (nih.gov)
  • The caspases can be activated through either the intrinsic (mitochondrial mediated) or extrinsic (death receptor mediated) apoptotic pathways. (geneontology.org)
  • The caspases that are first activated, activate other molecules of caspases, which activate yet others, until the entire cell is destroyed. (livescience.com)
  • Injury-induced cytochrome c -specific cleavage of caspase-9 followed by activation of caspase-3 in mature brain correlated with marked increases in Apaf-1 and caspase-3 mRNA and protein expression. (jneurosci.org)
  • Apaf1 binds to cytochrome c (Apaf2) and caspase-9 (Apaf3), which leads to caspase-9 activation. (novusbio.com)
  • Cytochrome c then forms a multi-protein complex known as the 'apoptosome' and initiates activation of the caspase cascade through caspase 9. (geneontology.org)
  • Recognition of PAMPs, DAMPs, and some foreign toxins can lead to inflammasome activation, which triggers activation of caspase-1, and the initiation of pyroptosis [1, 3]. (immunochemistry.com)
  • Activation of the inflammasome subsequently leads to processing and activation of caspase-1 [9]. (immunochemistry.com)
  • The following product was used in this experiment: Active/Pro-Caspase 3 Monoclonal Antibody (31A1067) from Thermo Fisher Scientific, catalog # MA1-91637, RRID AB_1954999. (thermofisher.com)
  • Western Blot analysis of (A) RAW264.7 and (B) NIH-3T3 cell lysate using Active/Pro-Caspase 3 Monoclonal Antibody (31A1067) (Product # MA1-91637). (thermofisher.com)
  • It begins with a signal either from the inside or the outside that informs enzymes within the cells called caspases to start cleaving the cell. (livescience.com)
  • A synthetic peptide corresponding to a region of the caspase-3-induced cleavage site of human Rb was used as immunogen. (novusbio.com)
  • The cone-enriched apoptotic protease caspase-7 ( Casp7 ) is thought to be triggered by endoplasmic reticulum (ER) stress and plays a pivotal role in mice deficient in the cone cyclic nucleotide-gated channels, a deficiency that causes achromatopsia in humans and in mice with autosomal dominant rhodopsin mutations, in particular the T17M mutation. (molvis.org)
  • Once activated, caspase-1 cleaves pro-IL-1β and pro-IL-18 into their mature forms, and it cleaves Gasdermin D (encoded by GSDMD) to induce pore opening and pyroptosis [10]. (immunochemistry.com)
  • Caspase-2 cleaves at amino acid 552 and caspase-6 at amino acid 586. (thermofisher.com)
  • Together with RAIDD and p53-induced protein with a death domain ([PIDD])(LRDD), caspase 2 has been shown to form the so-called PIDDosome, which may serve as an activation platform for the protease, although it may also be activated in the absence of PIDD. (wikipedia.org)
  • The inflammatory cytokines IL-1β and IL-18 undergo caspase-1-dependent activation and secretion during pyroptosis. (immunochemistry.com)
  • Overall, caspase 2 appears to be a very versatile caspase with multiple functions beyond cell death induction. (wikipedia.org)
  • Apoptotic caspase activity inhibits cell death-associated inflammation. (nature.com)
  • Thus, identifying a specific caspase as part of a cell death mechanism can give insights into the underlying cause for cell death. (molvis.org)
  • Caspase 2 also known as CASP2 is an enzyme that, in humans, is encoded by the CASP2 gene. (wikipedia.org)
  • [ 8 ] Caspase inhibition in clonal striatal cells showed no correlation between the reduction of aggregates in the cells and increased survival. (medscape.com)
  • Caspase-1-regulated cellular membrane pores dissipate cellular ionic gradients, producing a net increased osmotic pressure, water influx, cell swelling and, eventually, osmotic lysis and release of inflammatory intracellular contents [4]. (immunochemistry.com)
  • Caspases are synthesized in the cell as inactive zymogens and require to be activated to be functional. (spandidos-publications.com)
  • However, the function of ICAD/DFF45 is to restrain the enzyme CAD (Caspase Activated DNase). (wikidoc.org)
  • The cleavage and inactivation of ICAD/DFF45 by a caspase allows CAD to enter the nucleus and fragment the DNA, causing the characteristic 'DNA ladder' seen in apoptotic cells. (wikidoc.org)
  • Pro-caspase-2 contains two subunits, p19 and p12. (wikipedia.org)
  • Can inflammation occur under caspase-proficient conditions? (nature.com)
  • Following this discovery, the other mammalian caspases, in addition to caspases in other organisms such as the fruit fly Drosophila melanogaster , were soon identified and characterised. (wikidoc.org)
  • z-VAD-fmk ( N -benzyloxycarbonyl-Val-Ala-Asp-fluoromethylketone) is a powerful, irreversible and cell permeable inhibitor of caspases, and has been demonstrated to directly block the activity of caspases ( 13 ). (spandidos-publications.com)
  • As a result, the present study aimed to investigate changes in the expression of X-linked IAP (XIAP) induced by radiation injury, the activity and expression of caspase members following radiation and the effect of caspase blockade. (spandidos-publications.com)
  • Isoform 2 lacks activity is an dominant-negative inhibitor of caspase-9. (nih.gov)
  • We recommend using 1U per assay for analyzing caspase activity. (enzolifesciences.com)
  • A long pro-domain caspase that contains a caspase recruitment domain in its pro-domain region. (umassmed.edu)