Mouse Forkhead box protein P3 (Foxp3) ELISA Kit

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SKU:
MOEB1746
Product Type:
ELISA Kit
Size:
96 Assays
Uniprot:
Q99JB6
Range:
0.25-16 ng/mL
ELISA Type:
Sandwich
Synonyms:
Foxp3, AIID, DIETER
Reactivity:
Mouse
Frequently bought together:

Description

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Product Name:Mouse Forkhead box protein P3 (Foxp3) ELISA Kit
Product Code:MOEB1746
Alias:Forkhead box protein P3, Scurfin, Foxp3
Uniprot:Q99JB6
Reactivity:Mouse
Range:0.25-16 ng/mL
Detection Method:Sandwich
Size:96 Assay
Storage:Please see kit components below for exact storage details
Note:For research use only
UniProt Protein Function:FOXP3: Probable transcription factor. Plays a critical role in the control of immune response. Interacts with IKZF3. 3 isoforms of the human protein are produced by alternative splicing.
UniProt Protein Details:

Protein type:Transcription factor; Cell cycle regulation; DNA-binding; C2H2-type zinc finger protein

Cellular Component: cytoplasm; intracellular; nucleus

Molecular Function:DNA binding; histone acetyltransferase binding; histone deacetylase binding; metal ion binding; NFAT protein binding; nucleic acid binding; protein binding; protein homodimerization activity; RNA polymerase II transcription factor activity, enhancer binding; sequence-specific DNA binding; transcription corepressor activity; transcription factor activity

Biological Process: B cell homeostasis; CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation; CD4-positive, CD25-positive, alpha-beta regulatory T cell lineage commitment; cytokine production; inhibition of CREB transcription factor; inhibition of NF-kappaB transcription factor; myeloid cell homeostasis; negative regulation of cell proliferation; negative regulation of chronic inflammatory response; negative regulation of cytokine biosynthetic process; negative regulation of cytokine secretion; negative regulation of histone acetylation; negative regulation of histone deacetylation; negative regulation of immune response; negative regulation of inflammatory response; negative regulation of interferon-gamma biosynthetic process; negative regulation of interferon-gamma production; negative regulation of interleukin-10 production; negative regulation of interleukin-17 production; negative regulation of interleukin-2 biosynthetic process; negative regulation of interleukin-2 production; negative regulation of interleukin-4 production; negative regulation of interleukin-5 production; negative regulation of interleukin-6 production; negative regulation of isotype switching to IgE isotypes; negative regulation of lymphocyte proliferation; negative regulation of T cell cytokine production; negative regulation of T cell proliferation; negative regulation of transcription factor activity; negative regulation of transcription from RNA polymerase II promoter; negative regulation of transcription, DNA-dependent; negative regulation of tumor necrosis factor production; positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation; positive regulation of histone acetylation; positive regulation of immature T cell proliferation in the thymus; positive regulation of interleukin-4 production; positive regulation of peripheral T cell tolerance induction; positive regulation of regulatory T cell differentiation; positive regulation of T cell anergy; positive regulation of T cell tolerance induction; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription, DNA-dependent; positive regulation of transforming growth factor-beta1 production; regulation of immunoglobulin production; regulation of isotype switching to IgG isotypes; regulation of T cell anergy; regulation of transcription from RNA polymerase II promoter; regulation of transcription, DNA-dependent; regulatory T cell differentiation; T cell activation; T cell mediated immunity; T cell receptor signaling pathway; tolerance induction; tolerance induction to self antigen; transcription, DNA-dependent

NCBI Summary:The protein encoded by this gene is a member of the forkhead/winged-helix family of transcriptional regulators. Defects in this gene result in the scurfy phenotype (sf). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2015]
UniProt Code:Q99JB6
NCBI GenInfo Identifier:16905075
NCBI Gene ID:20371
NCBI Accession:NP_473380.1
UniProt Related Accession:Q99JB6
Molecular Weight:
NCBI Full Name:forkhead box protein P3
NCBI Synonym Full Names:forkhead box P3
NCBI Official Symbol:Foxp3  
NCBI Official Synonym Symbols:sf; JM2; scurfin  
NCBI Protein Information:forkhead box protein P3
UniProt Protein Name:Forkhead box protein P3
UniProt Synonym Protein Names:Scurfin
Protein Family:Forkhead box protein
UniProt Gene Name:Foxp3  
UniProt Entry Name:FOXP3_MOUSE
Component Quantity (96 Assays) Storage
ELISA Microplate (Dismountable) 8×12 strips -20°C
Lyophilized Standard 2 -20°C
Sample Diluent 20ml -20°C
Assay Diluent A 10mL -20°C
Assay Diluent B 10mL -20°C
Detection Reagent A 120µL -20°C
Detection Reagent B 120µL -20°C
Wash Buffer 30mL 4°C
Substrate 10mL 4°C
Stop Solution 10mL 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

*Note: The below protocol is a sample protocol. Protocols are specific to each batch/lot. For the correct instructions please follow the protocol included in your kit.

Allow all reagents to reach room temperature (Please do not dissolve the reagents at 37°C directly). All the reagents should be mixed thoroughly by gently swirling before pipetting. Avoid foaming. Keep appropriate numbers of strips for 1 experiment and remove extra strips from microtiter plate. Removed strips should be resealed and stored at -20°C until the kits expiry date. Prepare all reagents, working standards and samples as directed in the previous sections. Please predict the concentration before assaying. If values for these are not within the range of the standard curve, users must determine the optimal sample dilutions for their experiments. We recommend running all samples in duplicate.

Step
1. Add Sample: Add 100µL of Standard, Blank, or Sample per well. The blank well is added with Sample diluent. Solutions are added to the bottom of micro ELISA plate well, avoid inside wall touching and foaming as possible. Mix it gently. Cover the plate with sealer we provided. Incubate for 120 minutes at 37°C.
2. Remove the liquid from each well, don't wash. Add 100µL of Detection Reagent A working solution to each well. Cover with the Plate sealer. Gently tap the plate to ensure thorough mixing. Incubate for 1 hour at 37°C. Note: if Detection Reagent A appears cloudy warm to room temperature until solution is uniform.
3. Aspirate each well and wash, repeating the process three times. Wash by filling each well with Wash Buffer (approximately 400µL) (a squirt bottle, multi-channel pipette,manifold dispenser or automated washer are needed). Complete removal of liquid at each step is essential. After the last wash, completely remove remaining Wash Buffer by aspirating or decanting. Invert the plate and pat it against thick clean absorbent paper.
4. Add 100µL of Detection Reagent B working solution to each well. Cover with the Plate sealer. Incubate for 60 minutes at 37°C.
5. Repeat the wash process for five times as conducted in step 3.
6. Add 90µL of Substrate Solution to each well. Cover with a new Plate sealer and incubate for 10-20 minutes at 37°C. Protect the plate from light. The reaction time can be shortened or extended according to the actual color change, but this should not exceed more than 30 minutes. When apparent gradient appears in standard wells, user should terminatethe reaction.
7. Add 50µL of Stop Solution to each well. If color change does not appear uniform, gently tap the plate to ensure thorough mixing.
8. Determine the optical density (OD value) of each well at once, using a micro-plate reader set to 450 nm. User should open the micro-plate reader in advance, preheat the instrument, and set the testing parameters.
9. After experiment, store all reagents according to the specified storage temperature respectively until their expiry.

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.

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