Human WNT3A ELISA Kit (HUFI01808)

Product Name:	Human WNT3A ELISA Kit
Product Code:	HUFI01808
Size:	96 Assays
Alias:	WNT3A, MGC119418, MGC119419, MGC119420, protein Wnt-3a, wingless-type MMTV integRation site family, member 3A
Detection method:	Sandwich ELISA, Double Antibody
Application:	This immunoassay kit allows for the in vitro quantitative determination of Human WNT3A concentrations in serum plasma and other biological fluids.
Sensitivity:	18.75pg/ml
Range:	31.25-2000pg/ml
Storage:	4°C for 6 months
Note:	For Research Use Only

Recovery:

Matrices listed below were spiked with certain level of Human WNT3A and the recovery rates were calculated by comparing the measured value to the expected amount of Human WNT3A in samples.

Matrix	Recovery range(%)	Average(%)
serum(n=5)	88-102	95
EDTA plasma(n=5)	86-104	96
UFH plasma(n=5)	87-99	94

Linearity:

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human WNT3A and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample	1:2	1:4	1:8
serum(n=5)	85-97%	97-105%	86-102%
EDTA plasma(n=5)	88-100%	88-97%	84-100%
UFH plasma(n=5)	81-95%	87-98%	80-100%

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

P56704

UniProt Protein Function:	WNT3A: Ligand for members of the frizzled family of seven transmembrane receptors. Wnt-3 and Wnt-3a play distinct roles in cell-cell signaling during morphogenesis of the developing neural tube. Interacts with PORCN. Interacts with APCDD1 and WLS. Component of the Wnt-Fzd-LRP5-LRP6 signaling complex that contains a WNT protein, a FZD protein and LRP5 or LRP6. Interacts directly in the complex with LRP6. Moderately expressed in placenta and at low levels in adult lung, spleen, and prostate. Belongs to the Wnt family.
UniProt Protein Details:	Protein type:Secreted; Secreted, signal peptide Chromosomal Location of Human Ortholog: 1q42 Cellular Component: proteinaceous extracellular matrix; extracellular space; cell surface; endoplasmic reticulum lumen; early endosome membrane; Golgi lumen; plasma membrane; extracellular region Molecular Function:protein domain specific binding; protein binding; frizzled binding; transcription coactivator activity; receptor agonist activity; frizzled-2 binding Biological Process: positive regulation of mesodermal cell fate specification; axon guidance; extracellular matrix organization and biogenesis; positive regulation of protein binding; positive regulation of transcription, DNA-dependent; cell proliferation in forebrain; positive regulation of receptor internalization; positive regulation of caspase activity; Wnt receptor signaling pathway through beta-catenin; positive regulation of collateral sprouting in the absence of injury; palate development; negative regulation of axon extension involved in axon guidance; Wnt receptor signaling pathway in forebrain neuroblast division; negative regulation of neurogenesis; neuron differentiation; mammary gland development; positive regulation of cell proliferation; positive regulation of B cell proliferation; hemopoiesis; heart looping; dorsoventral neural tube patterning; inner ear morphogenesis; in utero embryonic development; hippocampus development; negative regulation of fat cell differentiation; positive regulation of peptidyl-serine phosphorylation; osteoblast differentiation; paraxial mesodermal cell fate commitment; signalosome assembly; spinal cord association neuron differentiation; positive regulation of transcription factor activity; positive regulation of transcription from RNA polymerase II promoter; positive regulation of protein amino acid phosphorylation
NCBI Summary:	The WNT gene family consists of structurally related genes which encode secreted signaling proteins. These proteins have been implicated in oncogenesis and in several developmental processes, including regulation of cell fate and patterning during embryogenesis. This gene is a member of the WNT gene family. It encodes a protein which shows 96% amino acid identity to mouse Wnt3A protein, and 84% to human WNT3 protein, another WNT gene product. This gene is clustered with WNT14 gene, another family member, in chromosome 1q42 region. [provided by RefSeq, Jul 2008]
UniProt Code:	P56704
NCBI GenInfo Identifier:	20532424
NCBI Gene ID:	89780
NCBI Accession:	P56704.2
UniProt Secondary Accession:	P56704,Q3SY79, Q3SY80, Q969P2,
UniProt Related Accession:	P56704
Molecular Weight:	39kDa
NCBI Full Name:	Protein Wnt-3a
NCBI Synonym Full Names:	wingless-type MMTV integration site family, member 3A
NCBI Official Symbol:	WNT3A
NCBI Protein Information:	protein Wnt-3a
UniProt Protein Name:	Protein Wnt-3a
UniProt Gene Name:	WNT3A
UniProt Entry Name:	WNT3A_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 Âµl 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 Âµl 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.

Human WNT3A ELISA Kit (HUFI01808)

Description