Human Caspase 3 ELISA Kit
Human Caspase 3 ELISA Kit - Information
The ELISA Genie Caspase 3 ELISA Kit can assay for Caspase 3 in the following samples: serum, blood, plasma, cell culture supernatant and other related supernatants and tissues.How our Caspase 3 ELISA Kits Work?
The ELISA Genie (enzyme-linked immunosorbent assays) assay kits are designed for the quantitative measurement of analytes in a wide variety of samples. As today's scientists demand high quality consistent data for high impact journals, ELISA Genie have developed our range of sensitive, fast and reliable ELISA kit assays to meet and exceed those demands. Our assay kits use a quantitative sandwich ELISA technique and each kit comes with highly specific antibodies pre-coated onto a 96-well microtiter plate.
At ELISA Genie we understand the need for speed! Therefore, we have developed an ultra-fast protocol meaning you achieve your results rapidly. So, once you have prepared and plated your samples, blanks and standards, you simply incubate with a highly specific biotin-conjugated primary antibody and Avidin conjugated to Horseradish Peroxidase (HRP) and incubate for the appropriate length of time. After washing the plate according to the protocol and addition of the TMB (3,3',5,5'-Tetramethylbenzidine) solution, the appearance of a blue colour should be detected due to an enzymatic reaction catalysed by HRP. Next step is the addition of the Stop Solution which terminates the HRP reaction and the blue colour turns yellow with the signal intensity measured on a plate reader at 450nm. The amount of bound Caspase 3 is proportional to the signal generated by the reaction meaning the kit assay gives you a quantitative measurement of the analyte in your samples.
Human Caspase 3 ELISA Kit - Data
Involved in the activation cascade of caspases responsible for apoptosis execution. At the onset of apoptosis it proteolytically cleaves poly(ADP-ribose) polymerase (PARP) at a '216-Asp-|-Gly-217' bond. Cleaves and activates sterol regulatory element binding proteins (SREBPs) between the basic helix-loop-helix leucine zipper domain and the membrane attachment domain. Cleaves and activates caspase-6, -7 and -9. Involved in the cleavage of huntingtin. Triggers cell adhesion in sympathetic neurons through RET cleavage.
|Post-Translational Modification|| |
Cleavage by granzyme B, caspase-6, caspase-8 and caspase-10 generates the two active subunits. Additional processing of the propeptides is likely due to the autocatalytic activity of the activated protease. Active heterodimers between the small subunit of caspase-7 protease and the large subunit of caspase-3 also occur and vice versa. S-nitrosylated on its catalytic site cysteine in unstimulated human cell lines and denitrosylated upon activation of the Fas apoptotic pathway, associated with an increase in intracellular caspase activity. Fas therefore activates caspase-3 not only by inducing the cleavage of the caspase zymogen to its active subunits, but also by stimulating the denitrosylation of its active site thiol.
CASP3/CPP32/CPP32B/SCA-1/Apoptain/Yama/Apopain/LICE-1/YAMA/Apopain/apoptosis-related cysteine protease/CASP-3/caspase 3 apoptosis-related cysteine peptidase/caspase-3/CPP-32/CPP32/SREBP cleavage activity 1/Cysteine protease CPP32/PARP cleavage protease/procaspase3/Protein Yama
|Detection method|| |
Sandwich ELISA Double Antibody
This immunoassay kit allows for the in vitro quantitative determination of CASP3 concentrations in serum plasma and other biological fluids.
4'C for 6 months
Matrices listed below were spiked with certain level of CASP3 and the recovery rates were calculated by comparing the measured value to the expected amount of CASP3 in samples.
The linearity of the kit was assayed by testing samples spiked with appropriate concentration of CASP3 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
For Research Use Only
Human Caspase 3 ELISA Kit Protocol
The below protocol is a sample protocol for Human Caspase 3 ELISA Kit using a biotinylated detection antibody and streptavidin-HRP. Sandwich ELISAs allow for the detection and quantification of an analyte in a sample by using known analyte concentrations as standards and plotting absorbance of known concentrations vs known standard concentrations. This allows the researcher to calculate the amount of Human Caspase 3 present in their sample.
Before adding to wells, equilibrate the SABC working solution and TMB substrate for at least 30 min at 37 Â°C. When diluting samples and reagents, they must be mixed completely and evenly. It is recommended to plot a standard curve for each test.
|1.||Set standard, test sample and control (zero) wells on the pre-coated plate respectively, and then, record their positions. It is recommended to measure each standard and sample in duplicate. Wash plate 2 times before adding standard, sample and control (zero) wells!|
|2.||Aliquot 0.1ml standard solutions into the standard wells.|
|3.||Add 0.1 ml of Sample / Standard dilution buffer into the control (zero) well.|
|4.||Add 0.1 ml of properly diluted sample ( Human serum, plasma, tissue homogenates and other biological fluids.) into test sample wells.|
|5.||Seal the plate with a cover and incubate at 37 Â°C for 90 min.|
|6.||Remove the cover and discard the plate content, clap the plate on the absorbent filter papers or other absorbent material. Do NOT let the wells completely dry at any time. Wash plate X2.|
|7.||Add 0.1 ml of Biotin- detection antibody working solution into the above wells (standard, test sample & zero wells). Add the solution at the bottom of each well without touching the side wall.|
|8.||Seal the plate with a cover and incubate at 37Â°C for 60 min.|
|9.||Remove the cover, and wash plate 3 times with Wash buffer. Let wash buffer rest in wells for 1 min between each wash.|
|10.||Add 0.1 ml of SABC working solution into each well, cover the plate and incubate at 37Â°C for 30 min.|
|11.||Remove the cover and wash plate 5 times with Wash buffer, and each time let the wash buffer stay in the wells for 1-2 min.|
|12.||Add 90 Âµl of TMB substrate into each well, cover the plate and incubate at 37Â°C in dark within 10-20 min. (Note: This incubation time is for reference use only, the optimal time should be determined by end user.) And the shades of blue can be seen in the first 3-4 wells (with most concentrated standard solutions), the other wells show no obvious color.|
|13.||Add 50 Âµl of Stop solution into each well and mix thoroughly. The color changes into yellow immediately.|
|14.||Read the O.D. absorbance at 450 nm in a microplate reader immediately after adding the stop solution.|
Human Caspase 3 ELISA Kit components
|ELISA Microplate(Dismountable)||8×12 strips||4°C for 6 months|
|Sample/Standard Dilution Buffer||20ml||4°C|
|Biotin-labeled Antibody(Concentrated)||120ul||4°C (Protect from light)|
|Antibody Dilution Buffer||10ml||4°C|
|HRP-Streptavidin Conjugate(SABC)||120ul||4°C (Protect from light)|
|SABC Dilution Buffer||10ml||4°C|
|TMB Substrate||10ml||4°C (Protect from light)|
Other materials and equipment required:The ELISA Genie Human Caspase 3 ELISA Kit will require other equipment and materials to carry out the assay. Please see list below for further details.
- Microplate reader with 450 nm wavelength filter
- Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
- Deionized or distilled water
- Absorbent paper
- Buffer resevoir
When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.
If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.
If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles.
Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit.
Urine & Cerebrospinal Fluid
Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid.
Cell culture supernatant
Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately.
Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C.
Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C.
Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles.
Human Caspase 3 ELISA Kit Protein Information
|UniProt Protein Function:||CASP3: Involved in the activation cascade of caspases responsible for apoptosis execution. At the onset of apoptosis it proteolytically cleaves poly(ADP-ribose) polymerase (PARP) at a '216-Asp-|-Gly-217' bond. Cleaves and activates sterol regulatory element binding proteins (SREBPs) between the basic helix-loop- helix leucine zipper domain and the membrane attachment domain. Cleaves and activates caspase-6, -7 and -9. Involved in the cleavage of huntingtin. Triggers cell adhesion in sympathetic neurons through RET cleavage. Heterotetramer that consists of two anti-parallel arranged heterodimers, each one formed by a 17 kDa (p17) and a 12 kDa (p12) subunit. Interacts with BIRC6/bruce. Highly expressed in lung, spleen, heart, liver and kidney. Moderate levels in brain and skeletal muscle, and low in testis. Also found in many cell lines, highest expression in cells of the immune system. Inhibited by isatin sulfonamides. Belongs to the peptidase C14A family.|
|UniProt Protein Details:|
Protein type:Protease; EC 22.214.171.124; Apoptosis; Motility/polarity/chemotaxis
Chromosomal Location of Human Ortholog: 4q34
Cellular Component: nucleoplasm; plasma membrane; nucleus; cytosol
Molecular Function:peptidase activity; cyclin-dependent protein kinase inhibitor activity; protein binding; cysteine-type endopeptidase activity; aspartic-type endopeptidase activity
Biological Process: extracellular matrix organization and biogenesis; nerve growth factor receptor signaling pathway; apoptosis; positive regulation of apoptosis; heart development; negative regulation of activated T cell proliferation; negative regulation of B cell proliferation; regulation of caspase activity; proteolysis; neuron differentiation; extracellular matrix disassembly; sensory perception of sound; B cell homeostasis; positive regulation of neuron apoptosis; response to wounding; erythrocyte differentiation; T cell homeostasis; DNA fragmentation during apoptosis; cell structure disassembly during apoptosis; response to UV; release of cytochrome c from mitochondria; cell fate commitment; negative regulation of cyclin-dependent protein kinase activity; keratinocyte differentiation; neuron apoptosis; induction of apoptosis via death domain receptors; caspase activation via cytochrome c; platelet formation; induction of apoptosis by oxidative stress; response to DNA damage stimulus; negative regulation of apoptosis
|NCBI Summary:||This gene encodes a protein which is a member of the cysteine-aspartic acid protease (caspase) family. Sequential activation of caspases plays a central role in the execution-phase of cell apoptosis. Caspases exist as inactive proenzymes which undergo proteolytic processing at conserved aspartic residues to produce two subunits, large and small, that dimerize to form the active enzyme. This protein cleaves and activates caspases 6, 7 and 9, and the protein itself is processed by caspases 8, 9 and 10. It is the predominant caspase involved in the cleavage of amyloid-beta 4A precursor protein, which is associated with neuronal death in Alzheimer's disease. Alternative splicing of this gene results in two transcript variants that encode the same protein. [provided by RefSeq, Jul 2008]|
|NCBI GenInfo Identifier:||77416852|
|NCBI Gene ID:||836|
|UniProt Secondary Accession:||P42574,Q96AN1, Q96KP2, A8K5M2, D3DP53,|
|UniProt Related Accession:||P42574|
|NCBI Full Name:||Caspase-3|
|NCBI Synonym Full Names:||caspase 3, apoptosis-related cysteine peptidase|
|NCBI Official Symbol:||CASP3|
|NCBI Official Synonym Symbols:||CPP32; SCA-1; CPP32B|
|NCBI Protein Information:||caspase-3; CASP-3; CPP-32; apopain; procaspase3; protein Yama; PARP cleavage protease; cysteine protease CPP32; SREBP cleavage activity 1; caspase 3, apoptosis-related cysteine protease|
|UniProt Protein Name:||Caspase-3|
|UniProt Synonym Protein Names:||Apopain; Cysteine protease CPP32; CPP-32; Protein Yama; SREBP cleavage activity 1; SCA-1|
|UniProt Gene Name:||CASP3|
|UniProt Entry Name:||CASP3_HUMAN|