Endoplasmic reticulum aminopeptidase 1, Erap1 ELISA KIT/ Mouse Endoplasmic reticulum aminopeptidase 1, Erap1 ELISA试剂盒

Mouse ERAP1 ELISA KIT

Packing  96Tests

FOR RESEARCH USE ONLY; NOT FOR THERAPEUTIC OR DIAGNOSTIC APPLICATIONS! PLEASE READ ENTIRE PROCEDURE!

Gene Name  ERAP1

Protein Name  Endoplasmic reticulum aminopeptidase 1

Alternative Name

Mouse ERAP1 ELISA KIT , A-LAP; ALAP; APPILS; ARTS-1; ARTS1; ERAAP; ERAAP1; PILS-AP; PILSAP; endoplasmic reticulum aminopeptidase 1; CTD-2260A17.2; adipocyte-derived leucine aminopeptidase; aminopeptidase PILS; aminopeptidase regulator of TNFR1 shedding; endoplasmic reticulum aminopeptidase 1 delta-Exon-11 isoform; endoplasmic reticulum aminopeptidase 1 delta-Exon-13 isoform; endoplasmic reticulum aminopeptidase 1 delta-Exon-14 isoform; endoplasmic reticulum aminopeptidase 1 delta-Exon-15 isoform; endoplasmic reticulum aminopeptidase associated with antigen processing; puromycin-insensitive leucyl-specific aminopeptidase; type 1 tumor necrosis factor receptor shedding aminopeptidase regulator

Intended use

Mouse ERAP1 ELISA KIT allows for the in vitro quantitative determination of ERAP1 concentrations in serum, plasma, tissue homogenates, cell culture supernates or other biological fluids.

 

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

 

Test principle      

The microtiter plate provided in Mouse ERAP1 ELISA KIT has been pre-coated with an ERAP1 antibody specific to ERAP1. Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody preparation specific for ERAP1 and then 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 ERAP1, 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 ERAP1 in the samples is then determined by comparing the O.D. of the samples to the standard curve.

 

Sample collection and storage 

Serum - Use a serum separator tube (SST) and allow samples to clot for 30 minutes before centrifugation for 15 minutes at approximately 1000 × g. Remove serum and assay immediately or aliquot and store samples at -20鈩?/p>

or -80鈩?.

Plasma - Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples  for 15 minutes at 1000 × g at 2鈩? 8鈩?nbsp; within 30 minutes of collection. Store samples at -20鈩?nbsp; or -80鈩?.

Tissue homogenates - The preparation of tissue homogenates will vary depending upon tissue type. For this assay, tissue was rinsed with ice-cold 1×PBS to remove excess blood, homogenized in ice-cold 1×PBS and stored overnight at ≤-20鈩?. In most cases, 10% homogenate (eg.1g of tissue in 10mL of ice-cold 1×PBS) is recommended. After two freeze-thaw cycles were performed  to  break the cell membranes, the homogenates were  centrifuged

for 5 minutes at 5000 x g. Remove the supernate and assay immediately or aliquot and store at ≤-20鈩?nbsp; .

Cell culture supernates and Other biological fluids - Remove particulates by centrifugation and assay immediately or aliquot and store samples at -20鈩?or -80鈩?.

Fresh  samples are first choice. If not, avoid freeze-thaw of samples.

 

Reagent preparation   

Standard - Please refer to the Data Sheet inserting in the ELISA kit.

Detection Reagent A and B - Dilute to the working concentration using Assay Diluent A and B (1:100), respectively.

Wash Buffer - If crystals have formed in the concentrate, warm to room temperature and mix gently until the crystals have  completely dissolved.  Dilute 30mL of Wash Buffer Concentrate into deionized or distilled water to prepare 750 mL of Wash Buffer.

 

Assay procedure 

Allow all reagents to reach room temperature (Please do not dissolve the reagents at 37鈩?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 -20鈩?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鈩?

2.      Remove  the  liquid  of  each  well,  don’t  wash.  Add  100μL  of  Detection

Reagent A working solution to each well. Cover with the Plate sealer. Incubate for 1 hour at 37鈩? Detection Reagent A working solution may appear  cloudy.  Warm  to  room  temperature and mix gently until solution

appears uniform.

3.      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, and let it sit for 1~2 minutes. Complete removal of liquid at each step is essential for 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.

4.      Add 100μL of Detection Reagent B working solution to each well. Cover with a new Plate sealer. Incubate for 1 hour at 37鈩?

5.      Repeat the aspiration/wash process for 5 times as conducted in step 3.

6.      Add 90μL of Substrate Solution to each well. Cover with a new Plate sealer. Incubate within 15-30 minutes at 37鈩? Protect from light.

7.      Add  50μL of  Stop  Solution  to each well. If color change does not appear

uniform, gently tap the plate to ensure thorough mixing.

8.      Determine the optical density of each well at once, using a microplate reader set to 450 nm.

 

Calculation of results 

Average the duplicate readings for each standard, control, and sample and sample, then 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 ERAP1 concentrations versus the log of the O.D. and the best fit line can be determined by regression analysis. It is recommended to use professional software to do this calculation, such as CurveExpert. 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.

 

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, Detection Reagent A and B can be used only once.

2.      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 strips DRY at any time during the assay.

3.      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.

4.      The wash procedure is critical. Insufficient washing will result in poor precision and falsely elevated absorbance  readings.

5.      Substrate Solution is easily contaminated. Please protect it from light.

6.      ELISA Kits from different batches may be a little different in detection range, sensitivity and color developing time.Please perform the experiment exactly according to printed instruction inside in the kit while electronic ones from our website is for reference only.

7.      Do not substitute reagents from one lot to another. Use only the reagents in the same kit supplied by manufacturer.

8.      Even the same operator might get different results in two separate experiments. In order to get better reproducible results, the operation of every step in the assay should be controlled. Furthermore, a preliminary experiment before assay for each batch is recommended.

9.      Each ELISA kit has been strictly passed QC test. However, results from end users might be inconsistent with our in-house data due to some unexpected transportation conditions or different lab equipments. Intra-assay variance among kits from different batches might arise from above factors, too.

10.    ELISA Kits from different manufacturers for the same item might produce different results, since we haven’t compared our products with other manufacturers.

11.    Period of validity: six months.

 

Precaution   

The Stop Solution provided with Mouse ERAP1 ELISA KIT is an acid solution. Wear eye, hand, face, and clothing protection when using this material.

 

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