| SKU: | EK0404 |
|---|---|
| Pack Size: | 96wells/kit, with removable strips. |
| Validated Species: | Human |
| Application: | ELISA |
| Sensitivity: | <1.5pg/ml |
| Assay Range: | 15.6pg/ml-1000pg/ml |
| Sample Type: | cell culture supernates, cell lysates, serum and plasma (heparin, EDTA). |
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Overview
| Product Name | Human IL-4 PicoKine™ ELISA Kit |
|---|---|
| SKU/Catalog Number | EK0404 |
| Description | Sandwich High Sensitivity ELISA kit for Quantitative Detection of Human IL-4. 96wells/kit, with removable strips. |
| Cite This Product | Human IL-4 PicoKine™ ELISA Kit (Boster Biological Technology, Pleasanton CA, USA, Catalog # EK0404) |
| Validated Species | Human |
| Application | ELISA *Our Boster Guarantee covers the use of this product in the above tested applications. **For positive and negative control design, consult "Tissue specificity" under Protein Target Info. |
| Immunogen | Expression system for standard: E.coli; Immunogen sequence: H25-S153 |
| Cross Reactivity | There is no detectable cross-reactivity with other relevant proteins. |
| Pack Size | 96wells/kit, with removable strips. |
Properties
| Sensitivity | <1.5pg/ml *Sensitivity, or Lower Limit of Detection (LLD), is the minimum level of target protein the ELISA assay can detect. We measure 20 blank wells and if the O.D. value is 2 standard deviations higher than the blanks' average O.D. the sample can be deemed positive. |
|---|---|
| Assay Range | 15.6pg/ml-1000pg/ml *This assay range is determined using common samples. For samples with low target protein concentrations, users can adjust the standard curve to extend the lower limit of assay range. |
| Sample Type | cell culture supernates, cell lysates, serum and plasma (heparin, EDTA). *The above listed samples are the ones valided with the assay. If you do not see your sample of interest listed, as long as there is enough level of target protein present in the sample, this Picokine™ ELISA kit should detect it. **For protocol and tips regarding preparing your sample of interest, please check our ELISA sample preparation guide. |
| Capture Antibody | monoclonal antibody from mouse |
| Detection Antibody | polyclonal antibody from goat |
| Normal Levels | Some research articles suggesting the natural levels of IL4 are listed below: |
| Storage | Store at 4°C for 6 months, at -20°C for 12 months. Avoid multiple freeze-thaw cycles(Shipped with wet ice.) |
Kit Components
| Catalog number | Description | Quantity |
| EK0404-CAP | 96-well plate precoated with anti-Human IL4 antibody | 1 |
| EK0404-ST | lyophilized recombinant Human IL4 standard | 10ng/tubex2 |
| EK0404-DA | biotinylated anti-Human IL4 antibody | 130ul(dilution 1:100) |
| AR1103 | Avidin-Biotin-Peroxidase Complex(ABC) | 130ul(dilution 1:100) |
| AR1106-1 | sample diluent buffer | 30ml |
| AR1106-2 | antibody diluent buffer | 12ml |
| AR1106-3 | ABC diluent buffer | 12ml |
| AR1104 | TMB color developing agent | 10ml |
| AR1105 | TMB stop solution | 10ml |
| PLA-SEA | Adhesive cover | 4 |
Washing buffer Preparation: Disolve AR0030-E to 1000ml distilled water and adjust pH to 7.2~7.6. Finally, adjust the total volume to 1L.
*Additional components can be purchased. If you need extra of the above components please order them together to avoid additional shipping charges.
See Prices For Extra ComponentsMaterial Required But Not Provided
- Microplate reader in standard size.
- Automated plate washer.
- Adjustable pipettes and pipette tips. Multichannel pipettes are recommended in the condition of large amount of samples in the detection.
- Clean tubes and Eppendorf tubes.
- Washing buffer (neutral PBS or TBS).
- Preparation of 0.01M TBS: Add 1.2g Tris, 8.5g NaCl; 450μl of purified acetic acid or 700μl of concentrated hydrochloric acid to 1000ml H2
- Preparation of 0.01 M PBS: Add 8.5g sodium chloride, 1.4g Na O and adjust pH to 7.2-7.
Protein Target Info (Source: Uniprot.org)
You can check the tissue specificity below for information on selecting positive and negative control.
| Gene Name | IL4 |
|---|---|
| Protein Name | Interleukin-4 |
| Molecular Weight | 17492 MW |
| Protein Function | Participates in at least several B-cell activation processes as well as of other cell types. It is a costimulator of DNA-synthesis. It induces the expression of class II MHC molecules on resting B-cells. It enhances both secretion and cell surface expression of IgE and IgG1. It also regulates the expression of the low affinity Fc receptor for IgE (CD23) on both lymphocytes and monocytes. . |
| Subcellular Localization | Secreted . |
| Uniprot ID | D4HNR6 |
| Alternative Names | Interleukin-4 ;IL-4 ;B-cell stimulatory factor 1 ;Lymphocyte stimulatory factor 1 ;IL4 ;hCG_24113 ; |
| Research Areas | |immunology|innate immunity|cytokines|interleukins| cancer|tumor immunology| immunology|adaptive immunity|regulatory t cells| |
Background for Interleukin-4
Interleukin-4(IL-4), also knowns as a B-cell stimulatory factor1(BSF1), is an immunomodulatory cytokine, which can inhibit the growth of tumour cells.The human cDNA contains a single open reading frame encoding a protein of 153 amino acids, including a putative signal peptide. IL-4 may act as an autocrine growth factor in pancreatic cancer cells and also give rise to the possibility that cancer-derived IL-4 may suppress cancer-directed immunosurveillance in vivo in addition to its growth-promoting effects, thereby facilitating pancreatic tumor growth and metastasis. The mouse and human genes and their protein products show structural and functional similarities. The human IL-4 gene, which occurs as a single copy in the haploid genome, is mapped on chromosome 5. The standard product used in this kit is recombinant human IL-4, consisting of 130 amino acids with the molecular mass of 14KDa.
Human IL-4 PicoKine™ ELISA Kit Images
Click the images to enlarge.
Human IL-4 PicoKine ELISA Kit standard curve
Intra/Inter Assay Precision
| Intra-Assay Precision | Inter-Assay Precision | |||||
|---|---|---|---|---|---|---|
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 16 | 16 | 16 | 24 | 24 | 24 |
| Mean(pg/ml) | 35 | 216 | 508 | 33 | 195 | 532 |
| Standard deviation | 2.03 | 12.52 | 21.33 | 2.04 | 11.89 | 29.26 |
| CV(%) | 5.8% | 5.8% | 4.2% | 6.2% | 6.1% | 5.5% |
Reproducibility
To assay reproducibility, three samples with differing target protein concentrations were assayed using four different lots.
| Lots | Lot1 (pg/ml) | Lot2 (pg/ml) | Lot3 (pg/ml) | Lot4 (pg/ml) | Mean (pg/ml) | Standard Deviation | CV (%) |
|---|---|---|---|---|---|---|---|
| Sample 1 | 35 | 31 | 34 | 34 | 33 | 1.5 | 4.5% |
| Sample 2 | 216 | 213 | 203 | 197 | 207 | 7.62 | 3.6% |
| Sample 3 | 508 | 515 | 448 | 502 | 493 | 26.52 | 5.3% |
Typical Data Obtained from Human IL-4 PicoKine™ ELISA Kit
(TMB reaction incubate at 37°C for 15-20min)
| Concentration(pg/ml) | 0 | 15.6 | 31.2 | 62.5 | 125 | 250 | 500 | 1000 | ||
| O.D. | 0.019 | 0.042 | 0.067 | 0.129 | 0.339 | 0.780 | 1.651 | 2.241 | ||
*The typical data is obtained from Boster's internal QC result and for reference only. It may differ from the lab test results of the end users. It is more important that the user's lab test results reflect the same linearity demonstrated in the typical data than achieving exactly the same O.D. values.
Publications
Liu B, Piao X, Guo L, Wang G, Sun W, Gao L, Zheng X, Fang Y. Evid Based Complement Alternat Med. 2017;2017:7323129. doi: 10.1155/2017/7323129. Epub 2017 Nov 20. A New Chinese Medicine Intestine Formula Greatly Improves the Effect of Aminosalicylate on Ulcerative Colitis
Dang, W., Xie, W. & Zhou, J. (2017). Expression of PYCARD Gene Transcript Variant mRNA in Peripheral Blood Mononuclear Cells of Primary Gout Patients with Different Chinese Medicine Syndromes. Chinese Journal of Integrative Medicine, 1-8. Advance online publication. doi: 10.1007/s11655-017-2826-9
Wang Yz, Feng Xg, Shi Qg, Hao Yl, Yang Y, Zhang Am, Kong Qx. Inflammation. 2013 Apr;36(2):337-45. Doi: 10.1007/S10753-012-9551-5. Silencing Of Mir155 Promotes The Production Of Inflammatory Mediators In Guillain-Barr?? Syndrome In Vitro.
Ozkara S, Keles E, Ilhan N, Gungor H, Kaygusuz I, Alpay Hc. Eur Arch Otorhinolaryngol. 2012 Dec;269(12):2519-24. Doi: 10.1007/S00405-012-1967-X. Epub 2012 Feb 23. The Relationship Between Th1/Th2 Balance And 1??,25-Dihydroxyvitamin D
Berni Canani R, Paparo L, Nocerino R, Cosenza L, Pezzella V, Di Costanzo M, Capasso M, Del Monaco V, D'Argenio V, Greco L, Salvatore F. Clin Epigenetics. 2015 Mar 31;7(1):38. Doi: 10.1186/S13148-015-0070-8. Ecollection 2015. Differences In Dna Met...
Li J, Li Ff, Zuo W, Zhou Y, Hao Hy, Dang J, Jiang M, He Mz, Deng Dr. J Huazhong Univ Sci Technolog Med Sci. 2014 Aug;34(4):586-90. Doi: 10.1007/S11596-014-1320-2. Epub 2014 Aug 19. Up-Regulated Expression Of Tim-3/Gal-9 At Maternal-Fetal Interface...
Huang L, Cao J. Oxid Med Cell Longev. 2014;2014:248786. Doi: 10.1155/2014/248786. Epub 2014 Mar 5. The Protective Effects Of Shen-Fu Injection On Experimental Acute Pancreatitis In A Rat Model.
Ou J, Shi W, Xu Y, Tao Z. Ann Allergy Asthma Immunol. 2014 Dec;113(6):658-665.E1. Doi: 10.1016/J.Anai.2014.08.015. Epub 2014 Sep 17. Intranasal Immunization With Dna Vaccine Coexpressing Der P 1 And Ubiquitin In An Allergic Rhinitis Mouse Model.
Jin Q, Cheng J, Liu Y, Wu J, Wang X, Wei S, Zhou X, Qin Z, Jia J, Zhen X. Brain Behav Immun. 2014 Aug;40:131-42. Doi: 10.1016/J.Bbi.2014.03.003. Epub 2014 Mar 12. Improvement Of Functional Recovery By Chronic Metformin Treatment Is Associated With...
Qiu Jl, Zhu Wl, Lu Yj, Bai Zf, Liu Zg, Zhao P, Sun C, Zhang Yb, Li H, Liu W. Neurochem Int. 2015 Jun-Jul;85-86:46-52. Doi: 10.1016/J.Neuint.2015.04.007. Epub 2015 May 4. The Selective Mglur5 Agonist Chpg Attenuates So2-Induced Oxidative Stress And...
Ozkan Zs, Deveci D, Kumbak B, Simsek M, Ilhan F, Sekercioglu S, Sapmaz E. J Reprod Immunol. 2014 Jun;103:53-8. Doi: 10.1016/J.Jri.2013.11.002. Epub 2013 Dec 8. What Is The Impact Of Th1/Th2 Ratio, Socs3, Il17, And Il35 Levels In Unexplained Infert...
Wang Xj, Deng Hz, Jiang B, Yao H. Int J Colorectal Dis. 2012 May;27(5):575-81. Doi: 10.1007/S00384-011-1352-Z. Epub 2011 Nov 15. The Natural Plant Product Sophocarpine Ameliorates Dextran Sodium Sulfate-Induced Colitis In Mice By Regulating Cytoki...
Huang J, Wang P, Li M, Ge J, Chen J, Chen X. Int J Mol Med. 2015 Aug;36(2):493-500. Doi: 10.3892/Ijmm.2015.2249. Epub 2015 Jun 16. Trichostatin A Reduces Cisplatin-Induced Ototoxicity Through The Stat6 Signaling Pathway.
Presti I, D'Orazio G, Labra M, La Ferla B, Mezzasalma V, Bizzaro G, Giardina S, Michelotti A, Tursi F, Vassallo M, Di Gennaro P. Appl Microbiol Biotechnol. 2015 Jul;99(13):5613-26. Doi: 10.1007/S00253-015-6482-8. Epub 2015 Mar 7. Evaluation Of The...
Li S, Hu X, Wang Z, Wu M, Zhang J. Inflamm Res. 2015 May;64(5):363-71. Doi: 10.1007/S00011-015-0816-Y. Epub 2015 Mar 27. Different Profiles Of Notch Signaling In Cigarette Smoke-Induced Pulmonary Emphysema And Bleomycin-Induced Pulmonary Fibrosis.
Chen F, Ni Y, Ye Y, Sun H, Li X, Xu S. Int Immunopharmacol. 2010 Oct;10(10):1153-60. Doi: 10.1016/J.Intimp.2010.06.021. Epub 2010 Jul 4. Comparison Of Immunosuppressive Activity Of Stephanoside E And Its Aglycone From Stephanotis Mucronata In Vitro.
Yu Zm, Liu Zh, Chen J, Zeng Q. Chin J Integr Med. 2014 Dec;20(12):934-43. Doi: 10.1007/S11655-014-1863-X. Epub 2014 Nov 27. Anti-Inflammatory Effect Of Qingwen Baidu Decoction (????????????
Zhu Hc, Qiu T, Liu Xh, Dong Wc, Weng Xd, Hu Ch, Kuang Yl, Gao Rh, Dan C, Tao T. Cell Immunol. 2012;274(1-2):12-8. Doi: 10.1016/J.Cellimm.2012.02.012. Epub 2012 Mar 14. Tolerogenic Dendritic Cells Generated By Relb Silencing Using Shrna Prevent Acu...
Sofian M, Aghakhani A, Farazi Aa, Banifazl M, Eslamifar A, Rashidi N, Khadem Sadegh A, Ramezani A. Hepat Mon. 2012 Dec;12(12):E6156. Doi: 10.5812/Hepatmon.6156. Epub 2012 Dec 29. Serum Profile Of T Helper 1 And T Helper 2 Cytokines In Hepatitis C ...
Li L, Yu Ch, Ying Hz, Yu Jm. J Ethnopharmacol. 2013 May 2;147(1):238-44. Doi: 10.1016/J.Jep.2013.03.012. Epub 2013 Mar 15. Antiviral Effects Of Modified Dingchuan Decoction Against Respiratory Syncytial Virus Infection In Vitro And In An Immunosup...
Customer Q&As
Q: Does the TMB color developing agent contain H2O2?
A: Yes, the TMB color developing agent contain H2O2.
Q: Does this ELISA kit contain any product produced in humans or primates?
Keywords: component, ingredient
Keywords: component, ingredient
A: None of the components in our ELISA kits are produced in humans or primates.
Q: What is the volume of the recombinant protein control? What is its shelf life?
Keywords: expiration, storage, temperature, size
Keywords: expiration, storage, temperature, size
A: The volume of the control is around 100pg. If unopened, the shelf life of the control is the same as the whole kit - "Store at 4˚C for 6 months, at -20˚C for 12 months." The reconstituted control can be stored at -20˚C for 2 days.
Q: Will it be okay to run the experiment if I accidentally used the wrong buffer (e.g. sample diluent buffer) for antibody dilution instead of the antibody diluent buffer? Keywords: dilution, replace, substitute, sample buffer
A: Using the sample diluent buffer for antibody dilution instead of the antibody diluent buffer will negatively affect the test result to some extent. The values of both standard and sample might be lower than the normal values.
Q: The protocol says to use neutral PBS and provides a recipe. Could I use neutral PBS made with KCl or KH2PO4 (common constituents for most PBS recipes) instead?
Keywords: protocol, alternative buffer, applications, reagent recipe
A: Yes, it is ok to use common PBS recipes. We have tried many types of buffers with common constituents, and no significant difference was observed whatsoever.
Q: Why are my O.D. values different than your values on the datasheet?
Keyword: troubleshooting, reference
A: We detected the kit in our lab and got our values on the datasheet before delivery, but protein activity will decrease as time goes on, so you may get lower O.D. values than ours. However, it should still be in a reasonable range and the standards can be used to calculate sample values. Good linearity of curve is more important than the actual numerical value.
Q: On the ELISA kit datasheet it says "HRP substrate TMB was used to visualize HRP enzymatic reaction." What is HRP and which part of the kit contains HRP?
Keyword: kit components, reagents, protocol
A: It means Avidin-Biotin-Peroxidase Complex(AR1103) and you could find it in Kit Components.
Q: Do you offer any ELISA kits that can work with whole blood samples instead of plasma or urine?
Keyword: applications
A: We test serum and plasma routinely, and there is very little difference between serum, plasma and whole blood. The whole blood also contains proteins we need to test. The kit can be used to test whole blood in theory.
Q: Does silicic acid (formula SiOH4) affect the results of the ELISA assay?
Keyword: protocol, reagents
A: The acid may affect the binding of antigen to antibody, it is not recommended to use. That being said, it is unlikely to affect the reaction if the solution remains an overall neutral environment.
Q: Is there lot-to-lot variation of the ELISA kits? What are Boster's general services when I have questions about your kits?
Keyword: technical support, help, customer service
A: The NIBSC/WHO 1st International Standard is evaluated, we always test our kits before delivery, and customers can find the test result on the protocol. If the customer needs technical support from us to analyze their data, please contact us and we ask that you provide us the following information: the lot# and production date, and when did the customer detect the kit.
Q: The results of my standards do not look correct, what could be the problem?
Keyword: troubleshoot, protocol
A: Double check the protocol for plate washing. It should be examined on three aspects: 1) Did you make the washing buffer correctly? 2) How long did you let the buffer stay in wells? 3) What was the volume of the washing buffer added to each well? In addition, pay attention when adding sample to avoid contamination. And we suggest testing the standards again. Values of standards at low concentration are more affected than that at higher concentration, so customer can still get expected values at high concentration even if there is an error. If problems persist, please contact technical support with the catalog and lot number of your product.
Q: What is the well depth of the 96 well plates for the ELISA kits?
Keyword: well capacity, product size
A: The well depth is 300ul, and the max capacity is 350ul. The height of the well is 1.1 cm, and the internal size is 1 cm.
Q: The kit does not include wash solution, what should I do?
Keyword: wash buffer
A: Our Elisa kits do not come with wash solution, but we have included information about how to make washing buffer on the datasheet. Please refer to the "Material Required But Not Provided" section. We also offer washing buffer for sale separately (Phosphate Buffered Saline Powder SKU: AR0030).
Q: For your ELISA kits, are the capture and detection antibodies polyclonals or monoclonals?
Keyword: antibody clonality
A: This information can be found for each kit under the "Properties" section, and you can find the immunogen sequence information in the "Overview" section.
Q: Do your ELISA kits come with sealants or plate covers?
Keyword: storage, sequential use
A: The kit can be used within a month sequentially if it's opened and stored at 4 degree. There is no need to use sealants, the plate can be packaged with aluminum foil bag, and for other reagents keep bottle tightly closed.
Q: What is the concentration of Sodium Azide in your Elisa kits?
Keyword: preservative
A: Our Elisa kits contain 0.02% Sodium Azide. All of the components except TMB colour developing reagent and stop solution contains 0.02% Sodium azide as the preservative.
Q: Are there positive and negative controls available for my ELISA kit?
Keyword: positive control, negative control
A: We can provide a recombinant protein as a control. It costs $50 per control and takes 2 weeks to manufacture. We cannot provide a positive or negative control in serum.
Q: Why do I get positive results for my knockout (KO) model when used as a control?
A: The knockout (KO) model may contain truncated forms of the target protein which can be detected by the ELISA assay.
Q: How long do I soak my plate in the wash buffer?
A: The plate should soak in 0.3mL PBS or TBS wash buffer for at least 1-2 minutes in an automated wash station.
Q: Can I use Tween in my wash buffer?
A: While it is not recommended to use Tween in your wash buffer, small amounts (<0.1% concentration) may decrease background due to insufficient blocking.
Q: What plate type do I use to set up the microplate reader?
A: Our plates are made with the Corning costar plates similar to the DNA-BIND 96 -well plates.
Q: What should I use for negative control?
A: Please contact us for negative control suggestions. You can also check expression databases such as genecards, uniprot etc. Due to logistic reasons, we do not sell serum or lysates that we use internally for positive or negative control.
Q: Where can I find troubleshooting information? What should I do if I have unexpected bands, high background, no signal, weak signal
A: You can find Boster's troubleshoot guides under tech support tab. Please contact us for further assistance on troubleshooting your experiment.
Q: What is the normal level of this protein in my sample of interest?
A: We have reviewed literature and have gathered this information for most of our ELISA kits. You can find this information on the product page or contact us if you cannot find it. However this information is only suggestive and cannot replace pilot studies in determining the optimal sample dilution ratio.
Q: Is the plate separable? Can I use only part of the kit and save the rest for later? How many samples can I run with one kit?
A: Yes the plate is separable. There are 12 strips of 8 wells each, all removable from the plate. The amount of samples you can run depend on a few factors. In the most common ELISA set up, you will use two strips for standards, and 10 strips for samples using duplicates, which let you run up to 40 samples per kit. Contact us if you have questions regarding other situations.
Q: Does the kit contain sample preparation reagents? How do I prepare my samples?
A: Since different sample types require different reagents, we do not include them in the ELISA kit. However we do have each reagent mentioned in the file below available at very reasonable prices. Be sure to check them out. For sample preparation protocols please download the file below: https://www.bosterbio.com/media/pdf/Boster_Sample_Preparation_Protocols.pdf
Q: Can this ELISA kit work on brain tissue homogenate, cell culture supernatant, saliva, urine, serum, whole blood or any other sample type?
A: In theory the ELISA kit will work for all sample types if the target protein is present at a level that falls within the linear range of the ELISA kit detection range. We guarantee the kit to work on the sample types that we have tested. If you want dilution ratio suggestions on these sample types please contact our technical support. For sample types that we have not tested for, we suggest you run pilot experiments to decide the optimal sample dilution.
Q: Can this ELISA kit react with the pro-form of the target protein? Can this ELISA kit react with an isoform of the protein?
A: In general, unless otherwise specified, the ELISA kit is pan-specific, meaning that it will react with all different forms of the target protein if they share the majority of the target protein's sequence. The capture and detection antibodies are reactive to the entire sequence of the standard protein. You can find the sequence information of the standard protein in the "immunogen" section. For more information about the specificity of the kit for your particular experiment, please contact our techincal support.
Q: Can this ELISA kit react with human, mouse, rat or other species?
A: If the kit is reactive to another commonly used species (human, mouse, and/or rat), we would have listed it as a separate product. If you want to check cross-reactivity to a species that is not included in the 3 species listed above, please contact our technical support for more information. As a rule of thumb, if the sequences are 90%+ identical, there is a high chance of cross-reactivity for your species of interest.
Q: What are some alternative names that could be used to describe this product?
A: Some common names include but are not limited to human il 4 elisa kit, human interleukin 4 elisa kit
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