Description
Human Retinoic Acid Receptor Alpha/RAR alpha ELISA Kit
The Human Retinoic Acid Receptor Alpha (RAR Alpha) ELISA Kit is a highly sensitive and specific assay designed for the accurate quantification of RAR Alpha levels in human serum, plasma, and cell culture supernatants. This kit provides reliable and reproducible results, making it an invaluable tool for researchers in a variety of fields.RAR Alpha is a key transcription factor involved in the regulation of gene expression and plays a critical role in cell differentiation and development. Dysregulation of RAR Alpha has been implicated in a variety of diseases, including cancer, inflammatory disorders, and metabolic conditions, highlighting its importance as a potential therapeutic target.
By accurately measuring RAR Alpha levels, researchers can gain valuable insights into disease mechanisms, identify potential therapeutic targets, and monitor the effectiveness of treatment strategies. The Human RAR Alpha ELISA Kit offers a convenient and reliable method for studying the function and regulation of this important protein, making it an essential tool for advancing research in various biomedical disciplines.
| Product Name: | Human Retinoic Acid Receptor Alpha/RAR alpha ELISA Kit |
| Product Code: | HUFI02815 |
| Size: | 96 Assays |
| Alias: | RARalpha, RARA, NR1B1, RARA, alpha polypeptide, RAR-alpha, retinoic acid receptor, alpha, RAR, NR1B1, Nuclear receptor subfamily 1 group B member 1, NR1B1 |
| Detection method: | Sandwich ELISA, Double Antibody |
| Application: | This immunoassay kit allows for the in vitro quantitative determination of Human RARalpha concentrations in serum plasma and other biological fluids. |
| Sensitivity: | 0.094ng/ml |
| Range: | 0.156-10ng/ml |
| Storage: | 4°C for 6 months |
| Note: | For Research Use Only |
| Recovery: | Matrices listed below were spiked with certain level of Human RARalpha and the recovery rates were calculated by comparing the measured value to the expected amount of Human RARalpha in samples. | ||||||||||||||||
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| Linearity: | The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human RARalpha and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected. | ||||||||||||||||
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| CV(%): | Intra-Assay: CV<8% Inter-Assay: CV<10% |
| Component | Quantity | Storage |
| ELISA Microplate (Dismountable) | 8×12 strips | 4°C for 6 months |
| Lyophilized Standard | 2 | 4°C/-20°C |
| Sample/Standard Dilution Buffer | 20ml | 4°C |
| Biotin-labeled Antibody(Concentrated) | 120ul | 4°C (Protect from light) |
| Antibody Dilution Buffer | 10ml | 4°C |
| HRP-Streptavidin Conjugate(SABC) | 120ul | 4°C (Protect from light) |
| SABC Dilution Buffer | 10ml | 4°C |
| TMB Substrate | 10ml | 4°C (Protect from light) |
| Stop Solution | 10ml | 4°C |
| Wash Buffer(25X) | 30ml | 4°C |
| Plate Sealer | 5 | - |
Other materials and equipment required:
- Microplate reader with 450 nm wavelength filter
- Multichannel Pipette, Pipette, microcentrifuge tubes and disposable pipette tips
- Incubator
- Deionized or distilled water
- Absorbent paper
- Buffer resevoir
| Uniprot | P10276 |
| UniProt Protein Function: | RARA: is a receptor for retinoic acid, a potent mammalian morphogen and teratogen that has profound effects on vertebrate development. RARA is a member of the nuclear receptor superfamily. Controls cell function by directly regulating gene expression. Its phosphorylation is crucial for transcriptional activity. Aberrations involving RARA may be a cause of acute promyelocytic leukemia. Two splice-variant isoforms have been described. |
| UniProt Protein Details: | Protein type:DNA-binding; Oncoprotein; Transcription factor; Nuclear receptor Chromosomal Location of Human Ortholog: 17q21 Cellular Component: nucleoplasm; cell surface; cell soma; perinuclear region of cytoplasm; cytoplasm; dendrite; nuclear chromatin; nucleus; actin cytoskeleton Molecular Function:protein domain specific binding; protein kinase B binding; retinoic acid binding; zinc ion binding; chromatin DNA binding; translation repressor activity, nucleic acid binding; transcription coactivator activity; phosphoinositide 3-kinase regulator activity; drug binding; alpha-actinin binding; transcription factor binding; protein binding; enzyme binding; protein heterodimerization activity; protein kinase A binding; steroid hormone receptor activity; mRNA 5'-UTR binding; retinoic acid receptor activity; transcription factor activity; transcription corepressor activity; receptor binding Biological Process: retinoic acid receptor signaling pathway; limb development; prostate gland development; negative regulation of translational initiation; regulation of myelination; estrogen receptor signaling pathway; glandular epithelial cell development; positive regulation of transcription, DNA-dependent; ventricular cardiac muscle cell differentiation; regulation of synaptic plasticity; female pregnancy; negative regulation of transcription from RNA polymerase II promoter; signal transduction; protein amino acid phosphorylation; regulation of phosphoinositide 3-kinase activity; response to estradiol stimulus; response to vitamin A; negative regulation of granulocyte differentiation; germ cell development; positive regulation of interleukin-4 production; negative regulation of cell proliferation; Sertoli cell fate commitment; positive regulation of T-helper 2 cell differentiation; ureteric bud development; negative regulation of interferon-gamma production; positive regulation of cell proliferation; positive regulation of interleukin-13 production; transmembrane transport; positive regulation of interleukin-5 production; transcription initiation from RNA polymerase II promoter; response to retinoic acid; multicellular organism growth; positive regulation of cell cycle; positive regulation of binding; negative regulation of tumor necrosis factor production; liver development; embryonic camera-type eye development; positive regulation of phosphoinositide 3-kinase cascade; positive regulation of protein kinase B signaling cascade; response to ethanol; response to cytokine stimulus; neural tube closure; gene expression; spermatogenesis; positive regulation of transcription from RNA polymerase II promoter; steroid hormone mediated signaling; positive regulation of neuron differentiation; negative regulation of transcription, DNA-dependent; apoptotic cell clearance; negative regulation of apoptosis Disease: Acute Promyelocytic Leukemia |
| NCBI Summary: | This gene represents a nuclear retinoic acid receptor. The encoded protein, retinoic acid receptor alpha, regulates transcription in a ligand-dependent manner. This gene has been implicated in regulation of development, differentiation, apoptosis, granulopoeisis, and transcription of clock genes. Translocations between this locus and several other loci have been associated with acute promyelocytic leukemia. Alternatively spliced transcript variants have been found for this locus.[provided by RefSeq, Sep 2010] |
| UniProt Code: | P10276 |
| NCBI GenInfo Identifier: | 133483 |
| NCBI Gene ID: | 5914 |
| NCBI Accession: | P10276.2 |
| UniProt Secondary Accession: | P10276,P78456, Q13440, Q13441, Q96S41, Q9NQS0, B8Y636 |
| UniProt Related Accession: | P10276 |
| Molecular Weight: | 39,700 Da |
| NCBI Full Name: | Retinoic acid receptor alpha |
| NCBI Synonym Full Names: | retinoic acid receptor, alpha |
| NCBI Official Symbol: | RARA |
| NCBI Official Synonym Symbols: | RAR; NR1B1 |
| NCBI Protein Information: | retinoic acid receptor alpha; RAR-alpha; retinoic acid receptor, alpha polypeptide; nuclear receptor subfamily 1 group B member 1; retinoic acid nuclear receptor alpha variant 1; retinoic acid nuclear receptor alpha variant 2; nucleophosmin-retinoic acid receptor alpha fusion protein NPM-RAR long form |
| UniProt Protein Name: | Retinoic acid receptor alpha |
| UniProt Synonym Protein Names: | Nuclear receptor subfamily 1 group B member 1 |
| Protein Family: | Retinoic acid receptor |
| UniProt Gene Name: | RARA |
| UniProt Entry Name: | RARA_HUMAN |
*Note: Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.
Before adding to wells, equilibrate the SABC working solution and TMB substrate for at least 30 min at 37°C. When diluting samples and reagents, they must be mixed completely and evenly. It is recommended to plot a standard curve for each test.
| Step | Protocol |
| 1. | Set standard, test sample and control (zero) wells on the pre-coated plate respectively, and then, record their positions. It is recommended to measure each standard and sample in duplicate. Wash plate 2 times before adding standard, sample and control (zero) wells! |
| 2. | Aliquot 0.1ml standard solutions into the standard wells. |
| 3. | Add 0.1 ml of Sample / Standard dilution buffer into the control (zero) well. |
| 4. | Add 0.1 ml of properly diluted sample ( Human serum, plasma, tissue homogenates and other biological fluids.) into test sample wells. |
| 5. | Seal the plate with a cover and incubate at 37 °C for 90 min. |
| 6. | Remove the cover and discard the plate content, clap the plate on the absorbent filter papers or other absorbent material. Do NOT let the wells completely dry at any time. Wash plate X2. |
| 7. | Add 0.1 ml of Biotin- detection antibody working solution into the above wells (standard, test sample & zero wells). Add the solution at the bottom of each well without touching the side wall. |
| 8. | Seal the plate with a cover and incubate at 37°C for 60 min. |
| 9. | Remove the cover, and wash plate 3 times with Wash buffer. Let wash buffer rest in wells for 1 min between each wash. |
| 10. | Add 0.1 ml of SABC working solution into each well, cover the plate and incubate at 37°C for 30 min. |
| 11. | Remove the cover and wash plate 5 times with Wash buffer, and each time let the wash buffer stay in the wells for 1-2 min. |
| 12. | Add 90 µl of TMB substrate into each well, cover the plate and incubate at 37°C in dark within 10-20 min. (Note: This incubation time is for reference use only, the optimal time should be determined by end user.) And the shades of blue can be seen in the first 3-4 wells (with most concentrated standard solutions), the other wells show no obvious color. |
| 13. | Add 50 µl of Stop solution into each well and mix thoroughly. The color changes into yellow immediately. |
| 14. | Read the O.D. absorbance at 450 nm in a microplate reader immediately after adding the stop solution. |
When carrying out an ELISA assay it is important to prepare your samples in order to achieve the best possible results. Below we have a list of procedures for the preparation of samples for different sample types.
| Sample Type | Protocol |
| Serum | If using serum separator tubes, allow samples to clot for 30 minutes at room temperature. Centrifuge for 10 minutes at 1,000x g. Collect the serum fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. If serum separator tubes are not being used, allow samples to clot overnight at 2-8°C. Centrifuge for 10 minutes at 1,000x g. Remove serum and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. |
| Plasma | Collect plasma using EDTA or heparin as an anticoagulant. Centrifuge samples at 4°C for 15 mins at 1000 × g within 30 mins of collection. Collect the plasma fraction and assay promptly or aliquot and store the samples at -80°C. Avoid multiple freeze-thaw cycles. Note: Over haemolysed samples are not suitable for use with this kit. |
| Urine & Cerebrospinal Fluid | Collect the urine (mid-stream) in a sterile container, centrifuge for 20 mins at 2000-3000 rpm. Remove supernatant and assay immediately. If any precipitation is detected, repeat the centrifugation step. A similar protocol can be used for cerebrospinal fluid. |
| Cell culture supernatant | Collect the cell culture media by pipette, followed by centrifugation at 4°C for 20 mins at 1500 rpm. Collect the clear supernatant and assay immediately. |
| Cell lysates | Solubilize cells in lysis buffer and allow to sit on ice for 30 minutes. Centrifuge tubes at 14,000 x g for 5 minutes to remove insoluble material. Aliquot the supernatant into a new tube and discard the remaining whole cell extract. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C. |
| Tissue homogenates | The preparation of tissue homogenates will vary depending upon tissue type. Rinse tissue with 1X PBS to remove excess blood & homogenize in 20ml of 1X PBS (including protease inhibitors) and store overnight at ≤ -20°C. Two freeze-thaw cycles are required to break the cell membranes. To further disrupt the cell membranes you can sonicate the samples. Centrifuge homogenates for 5 mins at 5000xg. Remove the supernatant and assay immediately or aliquot and store at -20°C or -80°C. |
| Tissue lysates | Rinse tissue with PBS, cut into 1-2 mm pieces, and homogenize with a tissue homogenizer in PBS. Add an equal volume of RIPA buffer containing protease inhibitors and lyse tissues at room temperature for 30 minutes with gentle agitation. Centrifuge to remove debris. Quantify total protein concentration using a total protein assay. Assay immediately or aliquot and store at ≤ -20 °C. |
| Breast Milk | Collect milk samples and centrifuge at 10,000 x g for 60 min at 4°C. Aliquot the supernatant and assay. For long term use, store samples at -80°C. Minimize freeze/thaw cycles. |
