Description
IL-2Ralpha Colorimetric Cell-Based ELISA Kit
The IL-2Ralpha Colorimetric Cell-Based ELISA Kit offered by Assay Genie is a cutting-edge tool for accurately measuring IL-2Ralpha levels in cell cultures. This kit boasts high sensitivity and specificity, ensuring precise and reproducible results for a diverse array of research applications.IL-2Ralpha, also known as CD25, is a critical receptor involved in immune responses, particularly in the regulation of T cell activation and proliferation. Dysregulation of IL-2Ralpha signaling has been implicated in various autoimmune diseases, allergies, and transplant rejection, highlighting its importance as a biomarker for understanding immune system function and developing targeted therapies.
With the IL-2Ralpha Colorimetric Cell-Based ELISA Kit, researchers can gain valuable insights into the role of IL-2Ralpha in immune function and disease pathogenesis, paving the way for innovative research and therapeutic advancements.
| Product Name: | IL-2Ralpha Colorimetric Cell-Based ELISA Kit |
| Product Code: | CBCAB00712 |
| ELISA Type: | Cell-Based |
| Target: | IL-2Ralpha |
| Reactivity: | Human |
| Dynamic Range: | > 5000 Cells |
| Detection Method: | Colorimetric 450 nmStorage/Stability:4°C/6 Months |
| Format: | 96-Well Microplate |
The IL-2Ralpha Colorimetric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can detect IL-2Ralpha protein expression profile in cells. The kit can be used for measuring the relative amounts of IL-2Ralpha in cultured cells as well as screening for the effects that various treatments, inhibitors (ie siRNA or chemicals), or activators have on IL-2Ralpha.
Qualitative determination of IL-2Ralpha concentration is achieved by an indirect ELISA format. In essence, IL-2Ralpha is captured by IL-2Ralpha-specific primary antibodies while the HRP-conjugated secondary antibodies bind the Fc region of the primary antibody. Through this binding, the HRP enzyme conjugated to the secondary antibody can catalyze a colorimetric reaction upon substrate addition. Due to the qualitative nature of the Cell-Based ELISA, multiple normalization methods are needed:
| 1. | A monoclonal antibody specific for human GAPDH is included to serve as an internal positive control in normalizing the target absorbance values. |
| 2. | Following the colorimetric measurement of HRP activity via substrate addition, the Crystal Violet whole-cell staining method may be used to determine cell density. After staining, the results can be analysed by normalizing the absorbance values to cell amounts, by which the plating difference can be adjusted. |
| Database Information: | Gene ID: 3559, UniProt ID: P01589, OMIM: 147730/601942/606367, Unigene: Hs.231367 |
| Gene Symbol: | IL2RA |
| Sub Type: | None |
| UniProt Protein Function: | IL2RA: Receptor for interleukin-2. Non-covalent dimer of an alpha and a beta subunit. IL2R exists in 3 different forms: a high affinity dimer, an intermediate affinity monomer (beta subunit), and a low affinity monomer (alpha subunit). The high and intermediate affinity forms also associate with a gamma subunit. |
| UniProt Protein Details: | Protein type:Membrane protein, integral Chromosomal Location of Human Ortholog: 10p15.1 Cellular Component: plasma membrane Molecular Function:interleukin-2 binding; Ras guanyl-nucleotide exchange factor activity Biological Process: apoptosis; cell proliferation; cell surface receptor linked signal transduction; immune response; inflammatory response; MAPKKK cascade; regulation of T cell tolerance induction Disease: Diabetes Mellitus, Insulin-dependent, 10; Interleukin 2 Receptor, Alpha, Deficiency Of |
| NCBI Summary: | The interleukin 2 (IL2) receptor alpha (IL2RA) and beta (IL2RB) chains, together with the common gamma chain (IL2RG), constitute the high-affinity IL2 receptor. Homodimeric alpha chains (IL2RA) result in low-affinity receptor, while homodimeric beta (IL2RB) chains produce a medium-affinity receptor. Normally an integral-membrane protein, soluble IL2RA has been isolated and determined to result from extracellular proteolyisis. Alternately-spliced IL2RA mRNAs have been isolated, but the significance of each is presently unknown. Mutations in this gene are associated with interleukin 2 receptor alpha deficiency.[provided by RefSeq, Nov 2009] |
| UniProt Code: | P01589 |
| NCBI GenInfo Identifier: | 124317 |
| NCBI Gene ID: | 3559 |
| NCBI Accession: | P01589.1 |
| UniProt Secondary Accession: | P01589,Q5W007, |
| UniProt Related Accession: | P01589 |
| Molecular Weight: | 30,819 Da |
| NCBI Full Name: | Interleukin-2 receptor subunit alpha |
| NCBI Synonym Full Names: | interleukin 2 receptor subunit alpha |
| NCBI Official Symbol: | IL2RA |
| NCBI Official Synonym Symbols: | p55; CD25; IL2R; IMD41; TCGFR; IDDM10 |
| NCBI Protein Information: | interleukin-2 receptor subunit alpha |
| UniProt Protein Name: | Interleukin-2 receptor subunit alpha |
| UniProt Synonym Protein Names: | TAC antigen; p55; CD_antigen: CD25 |
| UniProt Gene Name: | IL2RA |
| Component | Quantity |
| 96-Well Cell Culture Clear-Bottom Microplate | 2 plates |
| 10X TBS | 24 mL |
| Quenching Buffer | 24 mL |
| Blocking Buffer | 50 mL |
| 15X Wash Buffer | 50 mL |
| Primary Antibody Diluent | 12 mL |
| 100x Anti-Phospho Target Antibody | 60 µL |
| 100x Anti-Target Antibody | 60 µL |
| Anti-GAPDH Antibody | 60 µL |
| HRP-Conjugated Anti-Rabbit IgG Antibody | 12 mL |
| HRP-Conjugated Anti-Mouse IgG Antibody | 12 mL |
| SDS Solution | 12 mL |
| Stop Solution | 24 mL |
| Ready-to-Use Substrate | 12 mL |
| Crystal Violet Solution | 12 mL |
| Adhesive Plate Seals | 2 seals |
The following materials and/or equipment are NOT provided in this kit but are necessary to successfully conduct the experiment:
- Microplate reader able to measure absorbance at 450 nm and/or 595 nm for Crystal Violet Cell Staining (Optional)
- Micropipettes with capability of measuring volumes ranging from 1 µL to 1 ml
- 37% formaldehyde (Sigma Cat# F-8775) or formaldehyde from other sources
- Squirt bottle, manifold dispenser, multichannel pipette reservoir or automated microplate washer
- Graph paper or computer software capable of generating or displaying logarithmic functions
- Absorbent papers or vacuum aspirator
- Test tubes or microfuge tubes capable of storing ≥1 ml
- Poly-L-Lysine (Sigma Cat# P4832 for suspension cells)
- Orbital shaker (optional)
- Deionized or sterile water
*Note: Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.
| Step | Procedure |
| 1. | Seed 200 µL of 20,000 adherent cells in culture medium in each well of a 96-well plate. The plates included in the kit are sterile and treated for cell culture. For suspension cells and loosely attached cells, coat the plates with 100 µL of 10 µg/ml Poly-L-Lysine (not included) to each well of a 96-well plate for 30 minutes at 37°C prior to adding cells. |
| 2. | Incubate the cells for overnight at 37°C, 5% CO2. |
| 3. | Treat the cells as desired. |
| 4. | Remove the cell culture medium and rinse with 200 µL of 1x TBS, twice. |
| 5. | Fix the cells by incubating with 100 µL of Fixing Solution for 20 minutes at room temperature. The 4% formaldehyde is used for adherent cells and 8% formaldehyde is used for suspension cells and loosely attached cells. |
| 6. | Remove the Fixing Solution and wash the plate 3 times with 200 µL 1x Wash Buffer for five minutes each time with gentle shaking on the orbital shaker. The plate can be stored at 4°C for a week. |
| 7. | Add 100 µL of Quenching Buffer and incubate for 20 minutes at room temperature. |
| 8. | Wash the plate 3 times with 1x Wash Buffer for 5 minutes each time. |
| 9. | Add 200 µL of Blocking Buffer and incubate for 1 hour at room temperature. |
| 10. | Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time. |
| 11. | Add 50 µL of 1x primary antibodies (Anti-IL-2Ralpha Antibody and/or Anti-GAPDH Antibody) to the corresponding wells, cover with Parafilm and incubate for 16 hours (overnight) at 4°C. If the target expression is known to be high, incubate for 2 hours at room temperature. |
| 12. | Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time. |
| 13. | Add 50 µL of 1x secondary antibodies (HRP-Conjugated AntiRabbit IgG Antibody or HRP-Conjugated Anti-Mouse IgG Antibody) to corresponding wells and incubate for 1.5 hours at room temperature. |
| 14. | Wash 3 times with 200 µL of 1x Wash Buffer for 5 minutes each time. |
| 15. | Add 50 µL of Ready-to-Use Substrate to each well and incubate for 30 minutes at room temperature in the dark. |
| 16. | Add 50 µL of Stop Solution to each well and read OD at 450 nm immediately using the microplate reader. |
(Additional Crystal Violet staining may be performed if desired – details of this may be found in the kit technical manual.)
