人 IL12B / NKSF2 / p40 ELISA Pair Set

ABIN2010398 产品详细信息, 供应商: Log in to see
蛋白/底物
  • IL-12B
  • IL12B
  • p40
  • Il-12b
  • Il12p40
  • Il-12p40
  • Il12
  • CLMF
  • CLMF2
  • NKSF
  • NKSF2
  • IL12p40
  • IL-12
  • IL-12.p40
  • IL-12p40
  • interleukin 12 p40 subunit
  • interleukin 12A (natural killer cell stimulatory factor 1, cytotoxic lymphocyte maturation factor 1, p35)
  • interleukin 12b
  • interleukin 12B
  • interleukin 12B (natural killer cell stimulatory factor 2, cytotoxic lymphocyte maturation factor 2, p40)
  • IL-12
  • IL12A
  • Il12b
  • IL12B
适用

应用范围
ELISA
选项
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原理 The ELISA Pair Set is a solid phase sandwich ELISA (Enzyme-Linked Immunosorbent Assay). It utlizes monoclonal antibody specific for IL12B (NKSF2 / p40) coated on a 96-well plate. Standards and samples are addedto the wells, and any IL12B (NKSF2 / p40) present binds to the immobilized antibody. The wells are washed and ahorseradish peroxidase conjugated rabbit anti-IL12B monoclonal antibody is then added, producing an antibody-antigen-antibody "sandwich". The wells are again washed and TMB substrate solution is loaded, which produces colorin proportion to the amount of IL12B (NKSF2 / p40) present in the sample. To end the enzyme reaction, the stopsolution is added and absorbances of the microwell are read at 450 nm.
灵敏度 The minimum detectable dose of human IL12B ( NKSF2 / p40 ) was determined to be approximately 7.8125 pg/mL. This is defined as at least three times standard deviations above the mean optical density of 10 replicates of the zero standard.
产品特性 Pair Set
组件 Capture Antibody - 0.5 mg/mL of mouse anti-IL12B monoclonal antibody. Dilute to a workingconcentration of 2.0 μg/mL in CBS before coating.
Detection Antibody - 0.4 mg/mL biotinylated rabbit anti-IL12B monoclonal antibody. Dilute toworking concentration of 0.5 μg/mL in detection antibody diluteion buffer before use.
Standard - Each vial contains 9 ng of recombinant IL12B. Reconstitute standard powder with 1mLdetection antibody dilution buffer. After reconstitution, store at -20 °C to -70 °C in a manual defrostfreezer. A seven-point standard curve using 2-fold serial dilutions in sample dilution buffer, and ahigh standard of 500 pg/mL is recommended.
试剂未包括 CBS - 0.05 M
Na2CO3 - 0.05 M
NaHCO3, pH 9.6, 0.2 μm filtered
TBS - 25 mM
Tris, adjust pH to 7.4 by HCl
Wash Buffer - 0.05 % Tween20 in TBS, pH 7.2 - 7.4
Blocking Buffer - 5 % BSA in Wash Buffer
Sample dilution buffer - 0.5 % BSA in wash buffer, pH 7.2 - 7.4, 0.2 μm filtered
Detection antibody dilution buffer - 0.5 % BSA in wash buffer, pH 7.2 - 7.4, 0.2 μm filtered
Substrate Solution: To achieve best assay results, fresh substrate solution is recommended Substrate stock solution - 10 mg/mL TMB (Tetramethylbenzidine ) in DMSO Substrate dilution buffer - 0.05 M Na2HPO4 and 0.025 M citric acid , adjust pH to 5.5
Substrate working solution - For each plate dilute 250 μL substrate stock solution in 25 mL substrate dilutionbuffer and then add 80 μL 0.75 % H2O2 , mix it well
Stop Solution - 2 N H2SO4
别名 IL12B
背景 Interleukin 12 (IL-12) , also known as NKSF or CLMF, is a disulfide-linked heterodimeric cytokine composed of a 35 kDasubunit P35 and a 40 kDa subunit P40, also designated as IL-12A and IL-12B. IL-12 is predominantly produced bymacrophages and B lymphocytes and plays an important role in the activities of natural killer cells and T lymphocytes. Itis involved in the differentiation and development of Th1 cells, enhancement of natural killer cells' cytolytic function andmitogenic effects, as well as induction of IFN-gamma during which it can synergize with other IFN-gamma inducers. Alarge excess of monomeric IL-12B is also secreted by the cells producing IL-12, and exhibits no demonstrable biologicalactivity. Overexpression of IL-12B has been shown to be associated with the pathogenesis of multiple sclerosis.
研究领域 Hormones, Cytokines
应用备注 Optimal working dilution should be determined by the investigator.
说明

The human IL12B ( NKSF2 / p40 ) ELISA Pair Set is for the quantitative determination of human IL12B.This ELISA Pair Set contains the basic components required for the development of sandwich ELISAs.

试剂准备
  1. Dilute the capture antibody to the working concentration in CBS. Immediately coat a 96-well microplate with 100 μL per well of the diluted capture antibody. Seal the plate and incubate overnight at 4 °C.
    2. Aspirate each well and wash with at least 300 μL wash buffer, repeating the process two times for a total of three washes. Complete removal of liquid at each step is essential for good performance. After the last wash, remove any remaining wash buffer by inverting the plate and blotting it against clean paper towels.
    3. Block plates by adding 300 μL of blocking buffer to each well. Incubate at room temperature for a minimum of 1 hour.
    4. Repeat the aspiration/wash as in step 2. The plates are now ready for sample addition.
实验流程
  1. Add 100 μL of sample or standards in sample dilution buffer per well. Seal the plate and incubate 2 hours at roomtemperature.
    2. Repeat the aspiration/wash as in step 2 of plate preparation.
    3. Add 100 μL of the detection antibody, diluted in antibody dilution buffer, to each well. Seal the plate and incubate 1hour at room temperature.
    4. Repeat the aspiration/wash as in step 2 of plate preparation.
    5. Add 200 μL of substrate solution to each well. Incubate for 20 minutes at room temperature (if substrate solutionis not as requested, the incubation time should be optimized). Avoid placing the plate in direct light.
    6. Add 50 μL of stop solution to each well. Gently tap the plate to ensure thorough mixing.
    7. Determine the optical density of each well immediately, using a microplate reader set to 450 nm.
结果分析

Calculate the mean absorbance for each set of duplicate standards, controls and samples. Subtract the mean zero standard absorbance from each. 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. To determine the concentration of the unknowns, find the unknowns' mean absorbance value on the y-axis and draw a horizontal line to the standard curve. At the point of intersection, draw a vertical line to the x-axis and read the concentration. If samples have been diluted, the concentration read from the standard curve must be multiplied by the dilution factor. Alternatively, computer-based curve-fitting statistical software may also be employed to calculate the concentration of the sample.

限制 仅限研究用
状态 Lyophilized
注意事项 The Stop Solution suggested for use with this Pair Set is an acid solution. Wear eye, hand, face, andclothing protection when using this material.
注意事项 Avoid repeated freeze-thaw cycles.
储存条件 4 °C/-20 °C/-80 °C
储存方法 Capture Antibody: Aliquot and store at -20°C to -80°C for up to 6 months from date of receipt. Detection Antibody: Aliquot and store at -20°C to -80°C for up to 6 months from date of receipt. Standard: Store lyophilized standard at -20°C to -80°C for up to 6 months from date of receipt. Aliquot and store the reconstituted Standard at -80°C for up to 1 month. Streptavidin-HRP: Store at 4°C and protect it from prolonged exposure to light. DO NOT FREEZE! It is stable for up to 6 months from date of receipt.
有效期 6 months
厂商提供的图像
 image for Human IL12B / NKSF2 / p40 ELISA Pair Set (ABIN2010398) Human IL12B / NKSF2 / p40 ELISA Pair Set