Human AXIN2 (Axis Inhibition Protein 2) ELISA Kit (HUES01730)

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ELISA Kit Technical ManualMSDS

Human AXIN2 (Axis Inhibition Protein 2) ELISA Kit

This ELISA kit uses Sandwich-ELISA as the method. The micro ELISA plate provided in this kit has been pre-coated with an antibody specific to Human AXIN2 . Standards or samples are added to the appropriate micro ELISA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for Human AXIN2 and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well successively and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain Human AXIN2, biotinylated detection antibody and Avidin-HRP conjugate will appear blue in color. The enzyme-substrate reaction is terminated by adding Stop Solution and the color turns yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The OD value is proportional to the concentration of Human AXIN2. The concentration of Human AXIN2 in samples can be calculated by comparing the OD of the samples to the standard curve.

Assay typeSandwich
Assay time4.5h
Detection MethodColormetric
Detection Range0.31-20 ng/mL
Sensitivity0.19 ng/mL
Sample Volume Required Per Well100uL
Sample TypeSerum, plasma and other biological fluids


This kit recognizes Human AXIN2 in samples. No significant cross-reactivity or interference between Human AXIN2 and analogues was observed.

Typical Data

As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique, washing technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data is provided below for reference only.

O.D Average Corrected


Intra-assay Precision (Precision within an assay): 3 samples with low, mid range and high level Human AXIN2 were tested 20 times on one plate, respectively.

Inter-assay Precision (Precision between assays): 3 samples with low, mid range and high level Human AXIN2 were tested on 3 different plates, 20 replicates in each plate.

Intra-assay Precision Inter-assay Precision
Mean (ng/mL)1.051.817.611.011.767.02
Standard deviation0.
C V (%)5.714.973.816.935.113.85


The recovery of Human AXIN2 spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.

Sample Type Range (%) Average Recovery (%)
Serum (n=5)93-106100
EDTA plasma (n=5)87-10193
Cell culture media (n=5)91-10599


Samples were spiked with high concentrations of Human AXIN2 and diluted with Reference Standard & Sample Diluent to produce samples with values within the range of the assay.

Serum (n=5) EDTA plasma (n=5) Cell culture media (n=5)
1:2Range (%)95-10792-10587-99
Average (%)1009892
1:4Range (%)91-10586-9984-95
Average (%)979189
1:8Range (%)89-9981-9285-98
Average (%)948691
1:16Range (%)91-10580-9487-99
Average (%)988792

Kit Components & Storage

An unopened kit can be stored at 4'C for 1 month. If the kit is not used within 1 month, store the items separately according to the following conditions once the kit is received.

Item Specifications Storage
Micro ELISA Plate(Dismountable)8 wells X12 strips-20'C, 6 months
Reference Standard2 vials
Concentrated Biotinylated Detection Ab (100X)1 vial, 120 uL
Concentrated HRP Conjugate (100X)1 vial, 120 uL-20'C(shading light), 6 months
Reference Standard & Sample Diluent1 vial, 20 mL4'C, 6 months
Biotinylated Detection Ab Diluent1 vial, 14 mL
HRP Conjugate Diluent1 vial, 14 mL
Concentrated Wash Buffer (25X)1 vial, 30 mL
Substrate Reagent1 vial, 10 mL4'C(shading light)
Stop Solution1 vial, 10 mL4'C
Plate Sealer5 pieces
Product Description1 copy
Certificate of Analysis1 copy

Human AXIN2 (Axis Inhibition Protein 2) ELISA Kit (HUES01730) Assay procedure

    1. Set standard, test sample and control (zero) wells on the pre-coated plate and record theirpositions. It is recommended to measure each standard and sample in duplicate. Note: addall solutions to the bottom of the plate wells while avoiding contact with the well walls. Ensuresolutions do not foam when adding to the wells.
    2. Aliquot 100µl of standard solutions into the standard wells.
    3. Add 100µl of Sample / Standard dilution buffer into the control (zero) well.
    4. Add 100µl of properly diluted sample (serum, plasma, tissue homogenates and otherbiological fluids) into test sample wells.
    5. Cover the plate with the sealer provided in the kit and incubate for 90 min at 37°C.
    6. Aspirate the liquid from each well, do not wash. Immediately add 100µL of BiotinylatedDetection Ab working solution to each well. Cover the plate with a plate seal and gently mix.Incubate for 1 hour at 37°C.
    7. Aspirate or decant the solution from the plate and add 350µL of wash buffer to each welland incubate for 1-2 minutes at room temperature. Aspirate the solution from each well andclap the plate on absorbent filter paper to dry. Repeat this process 3 times. Note: a microplatewasher can be used in this step and other wash steps.
    8. Add 100µL of HRP Conjugate working solution to each well. Cover with a plate seal andincubate for 30 min at 37°C.
    9. Aspirate or decant the solution from each well. Repeat the wash process for five times asconducted in step 7.
    10. Add 90µL of Substrate Reagent to each well. Cover with a new plate seal and incubate forapproximately 15 min at 37°C. Protect the plate from light. Note: the reaction time can beshortened or extended according to the actual color change, but not by more than 30min.
    11. Add 50 µL of Stop Solution to each well. Note: Adding the stop solution should be done inthe same order as the substrate solution.
    12. Determine the optical density (OD value) of each well immediately with a microplate readerset at 450 nm.

Human AXIN2 (Axis Inhibition Protein 2) ELISA Kit (HUES01730) Protein Information

UniProt Protein Function:axin 2: is a negative regulator of the Wnt pathway, which is critical in stem cell signaling, morphogenesis, the mesenchymal-epithelial transition, and many cancers. Axin functions as a tumor suppressor. Probably facilitates the phosphorylation of beta-catenin and APC by GSK3B, leading to their ubiquitination and subsequent proteolysis. Is downregulated during progression of esophageal squamous cell carcinoma. Axin1/2 mediate cross-talk between TGF-beta and Wnt signaling pathways.
UniProt Protein Details:

Protein type:Adaptor/scaffold

Chromosomal Location of Human Ortholog: 17q24.1

Cellular Component: nucleoplasm; microtubule cytoskeleton; Golgi apparatus; centrosome; cytoplasmic microtubule; cytoplasm; cytoplasmic membrane-bound vesicle; postsynaptic density; plasma membrane; cell cortex; cytosol; nucleus; beta-catenin destruction complex

Molecular Function:protein binding; enzyme binding; ubiquitin protein ligase binding; beta-catenin binding; protein kinase binding; GTPase activator activity

Biological Process: odontogenesis; negative regulation of cell proliferation; cell proliferation; intramembranous ossification; regulation of mismatch repair; mRNA stabilization; dorsal/ventral axis specification; negative regulation of osteoblast differentiation; positive regulation of protein amino acid phosphorylation; maintenance of DNA repeat elements; bone mineralization; positive regulation of GTPase activity

Disease: Oligodontia-colorectal Cancer Syndrome

NCBI Summary:The Axin-related protein, Axin2, presumably plays an important role in the regulation of the stability of beta-catenin in the Wnt signaling pathway, like its rodent homologs, mouse conductin/rat axil. In mouse, conductin organizes a multiprotein complex of APC (adenomatous polyposis of the colon), beta-catenin, glycogen synthase kinase 3-beta, and conductin, which leads to the degradation of beta-catenin. Apparently, the deregulation of beta-catenin is an important event in the genesis of a number of malignancies. The AXIN2 gene has been mapped to 17q23-q24, a region that shows frequent loss of heterozygosity in breast cancer, neuroblastoma, and other tumors. Mutations in this gene have been associated with colorectal cancer with defective mismatch repair. [provided by RefSeq, Jul 2008]
UniProt Code:Q9Y2T1
NCBI GenInfo Identifier:12643949
NCBI Gene ID:8313
NCBI Accession:Q9Y2T1.1
UniProt Secondary Accession:Q9Y2T1,Q3MJ88, Q9H3M6, Q9UH84,
UniProt Related Accession:Q9Y2T1
Molecular Weight:843
NCBI Full Name:Axin-2
NCBI Synonym Full Names:axin 2
NCBI Official Symbol:AXIN2  
NCBI Official Synonym Symbols:AXIL; ODCRCS  
NCBI Protein Information:axin-2; conductin; axin-like protein; axis inhibition protein 2
UniProt Protein Name:Axin-2
UniProt Synonym Protein Names:Axin-like protein; Axil; Axis inhibition protein 2; Conductin
Protein Family:Axin
UniProt Gene Name:AXIN2  
UniProt Entry Name:AXIN2_HUMAN
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