Human IL-2 Quantikine ELISA Kit Summary
| Background |
The Quantikine Human IL-2 Immunoassay is a 4.5 hour solid phase ELISA designed to measure human IL-2 levels in cell culture supernates, serum, and plasma. It contains E. coli-expressed recombinant human IL-2 and antibodies raised against recombinant human IL-2. This immunoassay has been shown to accurately quantitate the recombinant factor. Results obtained using natural human IL-2 showed do...se response curves that were parallel to the standard curves obtained using the recombinant Quantikine® kit standards. These results indicate that this kit can be used to determine relative mass values for natural human IL-2. |
| Specificity |
Natural and recombinant human IL-2. |
| Source |
N/A |
| Assay Type |
Solid Phase Sandwich ELISA |
| Inter-Assay |
|
| Intra-Assay |
|
| Spike Recovery |
|
| Sample Volume |
|
| Gene |
IL2 |
Applications/Dilutions
| Dilutions |
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| Application Notes |
No significant interference observed with available related molecules. |
| Publications |
Read Publications using D2050 in the following applications:
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Packaging, Storage & Formulations
| Storage |
Store the unopened product at 2 - 8 °C. Do not use past expiration date. |
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Human IL-2 Quantikine ELISA Kit
Background
Interleukin 2 (IL-2), also known as T cell growth factor (TCGF), is a 15-18 kDa variably
glycosylated alpha -helical polypeptide that is a member of the Common gamma Chain ( gamma c)
cytokine family (1-4). It exists as a monomer and has a notably short half-life (< 30 minutes)
(1). Human IL-2 is synthesized as a 153 amino acid (aa) precursor that contains a 20 aa signal
sequence plus a 133 aa mature region (5, 6). The mature region is alpha -helical in nature, and
contains one utilized O-linked glycosylation site at Thr3 plus three cysteines, two of which form
an intrachain disulfide bond that is essential for activity (7). Mature human IL-2 shares 73%,
66%, 78% and 97% aa identity with canine, rat, feline and rhesus monkey IL-2, respectively.
Although human IL-2 shares only approximately 60% aa identity with the highly polymorphic
mouse IL-2, human IL-2 is known to be active on mouse IL-2 responsive cells. Cells reported to
secrete IL-2 include gamma δ T cells (8), activated conventional CD4+ and CD8+ T cells (1, 9), neurons
(10, 11), microglia (12), and hematopoietic stem cells (13).
The receptor for IL-2 (IL-2 R) is composed of three subunits, the 55 kDa CD25/IL-2 R alpha chain, the
70 kDa IL-2 R beta chain, and the 65 kDa Common gamma Chain (1, 3). IL-2 first binds to CD25, the
binary complex then recruits IL-2 R beta and gamma c to form the quaternary signaling complex (1, 14). In
addition to IL-2, IL-2 R beta is used by IL-15 in its quaternary signaling complex. gamma c also serves as a
signaling receptor for IL-4, -7, -9, -15, and -21 (1, 3).
In vitro studies have shown an important role for IL-2 in T cell activation and expansion. In vivo,
IL-2 is critical for the development, maintenance and function of regulatory T cells (Treg) which
provide protection against autoimmune disease. On the other hand, IL-2 can also promote
autoimmune inflammation in target organs through its roles in regulating the expression of
T cell trafficking genes, and production of Th2 cytokines. Within the CD8+ T cell subset, IL-2 is
essential for optimal primary responses and differentiation into terminal effector cells. IL-2 also
promotes the development of activated CD8+ T cells into memory cells. (1).
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⚠ WARNING: This product can expose you to chemicals including N,N-Dimethylforamide, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
Product General Protocols
Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.
FAQs for IL-2 (D2050). (Showing 1 - 1 of 1 FAQs).
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What is the difference between the Quantikine and Duoset ELISA kits?
- Our Quantikine kits are fully optimized and validated for the sample types listed on the product specific webpage and datasheet, as this can vary between kits. Each kit is supplied ready to use with one pre-coated 96-well plate, a detection antibody directly conjugated to HRP, and all other necessary reagents. These kits are ideal for researchers who want the convenience of a ready to use and optimized ELISA product. Some of these kits are also available prepackaged in larger 6 and 50 plate sizes.Our DuoSet Kits, in contrast, are ELISA development kits containing the capture and detection antibody, the mass-value calibrated standard, and streptavidin-HRP to prepare approximately 5 or 15 plates. Ancillary reagents will need to be used/purchased, and for most kits, we will recommend one of our Ancillary Reagent Kits, which contain the reagents we use ourselves in-house. DuoSet kits are validated only for cell culture supernatant samples and therefore require further development and validation for accurate measurement in more complex samples such as serum and plasma. Our DuoSet Kits offer an economical, flexible alternative for the experienced ELISA user.