MASP1 Kit ELISA

N° du produit ABIN455814

Détail du produit MASP1 Kit ELISA

Antigène: MASP1 (Mannan-Binding Lectin Serine Peptidase 1 (MASP1))

Reactivité: Humain

Méthode de détection: Colorimetric

Type de méthode: Sandwich ELISA

Gamme de detection: 1.56-100 U/L

Seuil minimal de détection: 1.56 U/L

Application: ELISA

Fonction: This immunoassay kit allows for the use in vitro quantitative determination of human MBL associated serine protease, MASP concentrations in cell culture supernates, serum, plasma and other biological fluids.

Type d'échantillon: Cell Culture Supernatant, Plasma, Serum

Analytical Method: Quantitative

Specificité: This assay recognizes recombinant and natural human MASP.

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

Sensibilité: < 0.39 U/L
The sensitivity of this assay, or Lower Limit of Detection (LLD) was defined as the lowest detectable concentration that could be differentiated from zero.

Attributs du produit: Homo sapiens,Human,Mannan-binding lectin serine protease 1,Complement factor MASP-3,Complement-activating component of Ra-reactive factor,Mannose-binding lectin-associated serine protease 1,MASP-1,

Ingrédients: Reagent (Quantity): Assay plate (1), Standard (2), Sample Diluent (1x20ml), Assay Diluent A (1x10ml), Assay DiluentB 1 x 10ml Detection Reagent A (1x120µl), Detection Reagent B (1x120µl), Wash Buffer(25 x concentrate) (1x30ml), Substrate (1x10ml), Stop Solution (1x10ml), Plate sealer for 96 wells (1x5)

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 MASP. Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated polyclonal antibody preparation specific for MASP and Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Then a TMB (3,3'5, 5' tetramethyl-benzidine) substrate solution is added to each well. Only those wells that contain MASP, 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 2 concentration of MASP 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 0.5 mL of Sample Diluent. This reconstitution produces a stock solution of 100 U/L. Allow the standard to sit for a minimum of 15 minutes with gentle agitation prior to making serial dilutions. The undiluted standard serves as the high standard (100 U/L). The Sample Diluent serves as the zero standard (0 U/L). Detection Reagent A and B - Dilute to the working concentration specified on the vial label using Assay Diluent A and B (1:100), respectively.

Prélèvement de l'échantillon: Serum - Use a serum separator tube (SST) and allow samples to clot for 30 minutes before centrifugation for 15 minutes at approximately 1000 x g. Remove serum and assay immediately or aliquot and store samples at -20 °C or -80 °C. Plasma - Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples for 15 minutes at 1000 x g at 2 - 8 °C within 30 minutes of collection. Store samples at -20 °C or -80 °C. Avoid repeated freeze-thaw cycles. Cell culture supernates and other biological fluids - Remove particulates by centrifugation and assay immediately or aliquot and store samples at -20 °C or -80 °C. Avoid repeated freeze-thaw cycles. Note: Serum, plasma, and cell culture supernatant samples to be used within 7 days may be stored at 2-8C, otherwise samples must stored at -20 °C (≤ 3 months) or -80 °C (≤ 6 months) to avoid loss of bioactivity and contamination. Avoid freeze-thaw cycles. When performing the assay slowly bring samples to room temperature. It is recommended that all samples be assayed in duplicate.

Procédure de l'essai:

Allow all reagents to reach room temperature. All the reagents should be mixed thoroughly by gently swirling before pipetting. Avoid foaming. Arrange and label required number of strips. Prepare all reagents, working standards and samples as directed in the previous sections.
1. Add 100 uL 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 uL 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 (350 uL) 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 uL 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 uL 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 uL 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. 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.
2. The wash procedure is critical. Insufficient washing will result in poor precision and falsely elevated absorbance readings.
3. It is recommended that no more than 32 wells be used for each assay run if manual pipetting is used since pipetting of all standards, specimens and controls should be completed within 5 minutes. A full plate of 96 wells may be used if automated pipetting is available.
4. Duplication of all standards and specimens, although not required, is recommended.
5. When mixing or reconstituting protein solutions, always avoid foaming.
6. 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.
7. To ensure accurate results, proper adhesion of plate sealers during incubation steps is necessary.
8. Do not substitute reagents from one kit lot to another. Use only the reagents supplied by manufacturer.

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 y-axis against the concentration on the x-axis and draw a best fit curve through the points on the graph. The data may be linearized by plotting the log of the MASP concentrations versus the log of the O.D. and the best fit line can be determined by regression analysis. 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 with the Assay Diluent and repeat the assay. Any variation in standard diluent, operator, pipetting technique, washing technique,incubation time or temperature, and kit age can cause variation 3 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.

Stock: 4 °C/-20 °C

Stockage commentaire: The Standard, Detection Reagent A, Detection Reagent B and the 96-well strip plate should be stored at -20 °C upon being received. The other reagents can be stored at 4 °C.

Détail du antigène

Antigène: MASP1 (Mannan-Binding Lectin Serine Peptidase 1 (MASP1))

Autre désignation: MASP1 (MASP1 Produits)

Synonymes: AW048060 Kit ELISA, CCPII Kit ELISA, Crarf Kit ELISA, Masp1/3 Kit ELISA, 3MC1 Kit ELISA, CRARF Kit ELISA, CRARF1 Kit ELISA, MAP1 Kit ELISA, MASP Kit ELISA, MASP3 Kit ELISA, MAp44 Kit ELISA, PRSS5 Kit ELISA, RaRF Kit ELISA, mannan-binding lectin serine peptidase 1 Kit ELISA, mannan binding lectin serine peptidase 1 Kit ELISA, Masp1 Kit ELISA, MASP1 Kit ELISA

Sujet: Mannose-binding lectin (MBL) is a serum component which participates in innate immunity by activating complement via a novel pathway. Human MBL forms complexes with two types of serine proteases termed MASP (MBL-associated serine protease). These two proteases, MASP1 and MASP2, are structurally similar to one another as well as to C1r and C1s. Together, MASP, C1r and C1s constitute a novel serine protease family. It is likely that human MASP1 is able to activate C3, while human MASP2 cleaves C4, although further functional studies are required to confirm this. Based on the analysis of MASP cDNA of vertebrates and ascidians, the MASP/C1r/C1s family can be classified into two groups. The first group is characterized by a histidine loop in its serine protease domain, an active-center serine encoded by TCN, and a proline as the amino acid residue at the-3 position from the active serine. Human MASP1, human MASP1, Xenopus MASP1 and ascidian MASPs all belong to this group. MASP of the second group has structural features which are distinct from those of the first group: an absence of a histidine loop, an active-serine encoded by AGY, and an alanine or valine as the amino acid residue at the -3 position from the active-serine. The second group includes human MASP2, Xenopus MASP2, carp MASP, shark MASP, C1r and C1s. The TCN-type of MASP may have emerged prior to the AGY-type as an ancestral protease of the MASP/C1r/C1s family and played a crucial role in cleaving C3.

Pathways: Système du Complément