Components
1.ELISpot Plates.
2.Positive Control.
3.20 X Wash Buffer Concentrated.
4.Concentrated Human MCAF Detection Antibody.
5.Detection Antibody Diluent.
6.Concentrated Streptavidin - AP.
7.Streptavidin-AP Diluent.
8.Substrate Solution.
Material not included
1.Pipettes with disposable tips, bottles, test tubes and racks, graduated cylinders, absorbent paper, and squirt bottle.
2.37°C CO2 incubator.
3.Deionized or distilled water.
4.Dissection microscope or ELISpot reader.
Assay Procedure
1.Wash 1 time with Cell Culture Media Fill each well completely with sterile Cell Culture Media. Don't discard until cells are ready to be plated.
2.Prepare Positive Control.
3.Add 2 wells positive control, 2 wells negative control (unstimulated cells), 2 wells background control (sterile cell culture media) and MCAF secreting cells with appropriate concentration to each plate, 100 µL/well. Incubate at 37°C CO2 incubator for 4-48 hours.
4.Prepare 1x Wash Buffer, Human MCAF Detection Antibody solution, and Streptavidin-AP solution.
5.Wash the plate 5 times with 1 x Wash Buffer.
6.Immediately add 100 µL of Human MCAF Detection Antibody to each well of the plate. Cover the plate and incubate 1hour at room temperature (20-25°C).
7.Repeat wash procedure as described in step 5. Wash plate 5 times.
8.Immediately add 100µL of Streptavidin-AP to each well of the plate. Cover the plate and incubate 1hour at room temperature (20-25°C).
9.Repeat wash procedure as described in step 5. Wash plate 5 times.
10.Immediately add 100 µL of Substrate Solution to each well of the plate. Cover the plate and incubate 5-15 minutes at room temperature (20-25°C) in dark.
11.Stop the assay Rinse 5 times with deionized water/distilled water. After final wash, invert plate, and dry by hitting plate onto absorbent paper slightly.
12.Dry plate Wet plates show higher background than completely dry plates. Remove the plastic underdrain from bottom of the plate. Allow the plate dry for 60-90 min at room temperature, or over night at room temperature, or 15-30 min at 37° C in dark. We recommend dry plate over night at room temperature.
13.Quantify spots using a dissection microscope or ELISpot reader.
14.Dried plate can be stored in sealed plastic bag in dark for 6 months.
Precaution of Use
1.Allow kit reagents and materials to reach room temperature (20-25°C) before use.
2.Do not use kit components beyond their expiration date. Do not substitute reagents from one kit lot to another.
3.The toxicity of the Substrate Solution is not currently known, wear gloves to avoid contact with skin. Follow local, state and federal regulations to dispose of used Substrate Solution.
4.If 20 x Wash Buffer Concentrated is stored at lower temperature (2-8 °C), crystals may form which must be dissolved by warming prior to use.
5.When samples are added to the wells, don't let the pipette tips contact the membrane.
Handling Advice
1.Don't let the plate dry during the assay.
2.In order to avoid edge effect don't stack plates during cell incubation.
3.Avoid move the plate during cells incubation period.
4.Don't dry the plate at a temperature higher than 37°C.
5.Spots can't be counted accurately until PVDF membranes were completely dry.
Restrictions
For Research Grade Use Only.