MMP2 Kit ELISA

N° du produit ABIN455835

Détail du produit MMP2 Kit ELISA

Antigène: MMP2 (Matrix Metalloproteinase 2 (MMP2))

Reactivité: Humain

Méthode de détection: Colorimetric

Type de méthode: Sandwich ELISA

Gamme de detection: 0.312-20 ng/mL

Seuil minimal de détection: 0.312 ng/mL

Application: ELISA

Fonction: This immunoassay kit allows for the in vitro quantitative determination of human MMP-2 concentrations in serum, plasma and other biological fluids.

Type d'échantillon: Plasma, Serum

Analytical Method: Quantitative

Specificité: This assay recognizes recombinant and natural human MMP-2.

Réactivité croisée (Details): No significant cross-reactivity or interference was observed.

Attributs du produit: Homo sapiens,Human,72 kDa type IV collagenase,72 kDa gelatinase,Gelatinase A,Matrix metalloproteinase-2,MMP-2,TBE-1,MMP2,CLG4A,3.4.24.24

Ingrédients: Reagent (Quantity):

• Assay plate (1),
• Standard (2),
• Sample Diluent (1×20 mL),
• Assay Diluent A (1×10 mL),
• Assay Diluent B (1×10 mL),
• Detection Reagent A (1×120 μL),
• Detection Reagent B (1×120 μL),
• Wash Buffer(25 x concentrate) (1×30 mL),
• Substrate (1×10 mL),
• 2 Stop Solution (1×10 mL),
• Plate sealer for 96 wells (5),
• Instruction (1)

Matériel non inclus: Microplate reader. Pipettes and pipette tips. EP tube Deionized or distilled water.

Information d'application

Volume d'échantillon: 100 μL

Plaque: Pre-coated

Protocole: The microtiter plate provided in this kit has been pre-coated with an antibody specific to MMP-2. Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated polyclonal antibody preparation specific for MMP-2. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Then a TMB substrate solution is added to each well. Only those wells that contain MMP-2, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of a sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450 nm 2 nm. The concentration of MMP-2 in the samples is then determined by comparing the O.D. of the samples to the standard curve.

Préparation des réactifs:

Bring all reagents to room temperature before use. Wash Buffer - If crystals have formed in the concentrate, warm to room temperature and mix gently until the crystals have completely dissolved. Dilute 30 mL of Wash Buffer Concentrate into deionized or distilled water to prepare 750 mL of Wash Buffer. Standard - Reconstitute the Standard with 1.0 mL of Sample Diluent. This reconstitution produces a stock solution. Allow the standard to sit for a minimum of 15 minutes with gentle agitation prior to making serial dilutions (Making serial dilution in the wells directly is not permitted). The undiluted standard serves as the high standard. The Sample Diluent serves as the zero standard (0 ng/ml).

Prélèvement de l'échantillon: Serum - Use a serum separator tube and allow samples to clot for 30 minutes before centrifugation for 20 minutes at approximately 1000 g. Remove serum and assay immediately or aliquot and store samples at -20 or -80 . Plasma - Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples for 15 minutes at 1000 g at 2 - 8 within 30 minutes of collection. Store samples at -20 or -80 . Avoid repeated freeze-thaw cycles. Other biological fluids - Remove particulates by centrifugation and assay immediately or 3 aliquot and store samples at -20 or -80 . Avoid repeated freeze-thaw cycles. Sample preparation - Serum/plasma samples require a 100 fold dilution. A suggested 100-fold dilution is 10uL Sample + 990uL Sample Diluent. Sample should be diluted by 0.1 M PBS(PH=7.0-7.2). Note: Serum and plasma to be used within 7 days may be stored at 2-8 , otherwise samples must stored at -20 ( 1 month) or -80 ( 2 months) to avoid loss of bioactivity and contamination. Avoid freeze-thaw cycles. When performing the assay slowly bring samples to room temperature.

Procédure de l'essai:

Allow all reagents to reach room temperature (Please do not dissolve the reagents at 37 °C directly.). All the reagents should be mixed thoroughly by gently swirling before pipetting. Avoid foaming. Keep appropriate numbers of strips for 1 experiment and remove extra strips from microtiter plate. Removed strips should be resealed and stored at 4 °C until the kits expiry date. Prepare all reagents, working standards and samples as directed in the previous sections. Please predict the concentration before assaying. If values for these are not within the range of the standard curve, users must determine the optimal sample dilutions for their particular experiments.
1. Add 100 μL of Standard, Blank, or Sample per well. Cover with the Plate sealer. Incubate for 2 hours at 37 °C .
2. Remove the liquid of each well, don ’ t wash.
3. Add 100 μL of Detection Reagent A working solution to each well. Cover with the Plate sealer. Incubate for 1 hour at 37 °C . Detection Reagent A working solution may appear cloudy. Warm to room temperature and mix gently until solution appears uniform.
4. Aspirate each well and wash, repeating the process three times for a total of three washes. Wash by filling each well with Wash Buffer (approximately 400 μL) using a squirt bottle, multi-channel pipette, manifold dispenser or autowasher. Complete removal of liquid at each step is essential to good performance. After the last wash, remove any remaining Wash Buffer by aspirating or decanting. Invert the plate and blot it against clean paper towels.
5. Add 100 μL of Detection Reagent B working solution to each well. Cover with a new Plate sealer. Incubate for 1 hours at 37 °C .
6. Repeat the aspiration/wash as in step 4.
7. Add 90 μL of Substrate Solution to each well. Cover with a new Plate sealer. Incubate within 30 minutes at 37 °C . Protect from light.
8. Add 50 μL of Stop Solution to each well. If color change does not appear uniform, gently tap the plate to ensure thorough mixing.
9. Determine the optical density of each well at once, using a microplate reader set to 450 nm.
Important Note:
1. Absorbance is a function of the incubation time. Therefore, prior to starting the assay it is recommended that all reagents should be freshly prepared prior to use and all required strip-wells are secured in the microtiter frame. This will ensure equal elapsed time for each pipetting step, without interruption.
2. Please carefully reconstitute Standards or working Detection Reagent A and B according to the instruction, and avoid foaming and mix gently until the crystals have completely dissolved. The reconstituted Standards can be used only once. This assay requires pipetting of small volumes. To minimize imprecision caused by pipetting, ensure that pipettors are calibrated. It is recommended to suck more than 10 μ l for once pipetting.
3. To ensure accurate results, proper adhesion of plate sealers during incubation steps is necessary. Do not allow wells to sit uncovered for extended periods between incubation steps. Once reagents have been added to the well strips, DO NOT let the 5 strips DRY at any time during the assay.
4. For each step in the procedure, total dispensing time for addition of reagents to the assay plate should not exceed 10 minutes.
5. To avoid cross-contamination, change pipette tips between additions of each standard level, between sample additions, and between reagent additions. Also, use separate reservoirs for each reagent.
6. The wash procedure is critical. Insufficient washing will result in poor precision and falsely elevated absorbance readings.
7. Duplication of all standards and specimens, although not required, is recommended.
8. Substrate Solution is easily contaminated. Please protect it from light.

Calcul des résultats:

Average the duplicate readings for each standard, control, and sample and subtract the average zero standard optical density. Create a standard curve by reducing the data using computer software capable of generating a four parameter logistic (4-PL) curve-fit. As an alternative, construct a standard curve by plotting the mean absorbance for each standard on the x-axis against the concentration on the y-axis and draw a best fit curve through the points on the graph. The data may be linearized by plotting the log of the SAA concentrations versus the log of the O.D. and the best fit line can be determined by regression analysis. It is recommended to use some related software to do this calculation, such as curve expert 13.0. This procedure will produce an adequate but less precise fit of the data. If samples have been diluted, the concentration read from the standard curve must be multiplied by the dilution factor.

Restrictions: For Research Use only

Stockage

Conseil sur la manipulation: 1. The kit should not be used beyond the expiration date on the kit label.
2. Do not mix or substitute reagents with those from other lots or sources.
3. If samples generate values higher than the highest standard, further dilute the samples and repeat the assay. Any variation in standard diluent, operator, pipetting technique, washing technique,incubation time or temperature, and kit age can cause variation in binding.
4. This assay is designed to eliminate interference by soluble receptors, ligands, binding proteins, and other factors present in biological samples. Until all factors have been tested in the Immunoassay, the possibility of interference cannot be excluded.
5. Limited by the current condition and scientific technology, we can't completely conduct the comprehensive identification and analysis on the raw material provided by suppliers. So there might be some qualitative and technical risks to use the kit.

Stock: 4 °C/-20 °C

Stockage commentaire: The Assay Plate, Standard, Detection Reagent A and Detection Reagent B should be stored at -20°C upon being received. After receiving the kit , Substrate should be always stored at 4°C.

Détail du antigène

Antigène: MMP2 (Matrix Metalloproteinase 2 (MMP2))

Autre désignation: MMP2 (MMP2 Produits)

Synonymes: 2-MMP Kit ELISA, CG1794 Kit ELISA, DM2-MMP Kit ELISA, Dm2-MMP Kit ELISA, Dmel\\CG1794 Kit ELISA, MMP2 Kit ELISA, anon-WO0118547.84 Kit ELISA, dm-2MMP Kit ELISA, dmmp2 Kit ELISA, l(2)02353 Kit ELISA, mmp2 Kit ELISA, wu:fa99h12 Kit ELISA, wu:fk89d01 Kit ELISA, fgmmp-2 Kit ELISA, Mmp-2 Kit ELISA, LOC100135793 Kit ELISA, Clg4a Kit ELISA, GelA Kit ELISA, MMP-2 Kit ELISA, CLG4 Kit ELISA, CLG4A Kit ELISA, MMP-II Kit ELISA, MONA Kit ELISA, TBE-1 Kit ELISA, matrix metallopeptidase 2 Kit ELISA, Matrix metalloproteinase 2 Kit ELISA, matrix metalloproteinase 2 Kit ELISA, matrix metalloproteinase-2 Kit ELISA, MMP2 Kit ELISA, Mmp2 Kit ELISA, mmp2 Kit ELISA, LOC657982 Kit ELISA, LOC100135793 Kit ELISA

Sujet: Matrix metalloproteinases (MMPs), also called matrixins, constitute a family of zinc and calcium-dependent endopeptidases that function in the breakdown of extracellular matrix and in the processing of a variety of biological molecules. They play an important role in many normal physiological processes such as embryonic development, morphogenesis, reproduction and tissue remodeling . They also participate in many pathological processes such as arthritis, cancer and cardiovascular disease . While the amounts of newly synthesized MMPs are regulated mainly at the levels of transcription, the proteolytic activities of existing MMPs are controlled through both the activation of proenzymes or zymogens and the inhibition of active enzymes by endogenous inhibitors such as alpha 2-macroglobulins and tissue inhibitors of metalloproteinases (TIMPs). MMP-2 (gelatinase A) is primarily expressed in mesenchymal cells (mainly fibroblasts) during development and tissue regeneration. It is highly expressed in stromal cells surrounding the invading front of metastasizing tumors and associated with many connective tissue cells as well as neutrophils, macrophages and monocytes. It is required for the switch to the angiogenic phenotype in a tumor model and its levels are elevated in tumor endothelium and in urine of patients with a variety of cancers. Together with MMP-9 (gelatinase B), it degrades type IV collagen, the major component of basement membranes and gelatin (denatured collagen). It can also degrade other types of collagens (V, VII and X) as well as elastin and fibronectin. It processes many other molecules, modulating their functions in different pathways. Human and mouse MMP-2 are secreted as 72 kDa proenzymes of 631 and 662 amino acids, respectively. The removal of the pro domain can be initiated by membrane-type MMPs or by serine proteases such as thrombin and activated protein C. The resulting mature and active enzyme consists of a catalytic domain, which is interrupted by three contiguous fibronectin type II-like domains, and a C-terminal, hemopexin-like domain. TIMPs inhibit active MMP-2 through tight, but non-covalent binding of their N-terminal domains to the catalytic domain of MMP-2 in a 1:1 2 stoichiometry. In addition, TIMP-2 can bind to the proenzyme through interaction between the C-terminal domains of both proteins.

Pathways: Activation of Innate immune Response