Product Name:	Human ZEB1 / Zinc finger E-box-binding homeobox 2 ELISA Kit
Product Code:	HUFI01397
Size:	96 Assays
Alias:	ZEB1, Zinc finger E-box-binding homeobox 1, Transcription factor 8, TCF-8, NIL-2-A zinc finger protein, Negative regulator of IL2, AREB6, TCF8, BZP, DELTAEF1, FECD6, NIL2A, PPCD3, ZFHEP, delta-crystallin enhancer binding factor 1, Negative regulator of IL2, posterior polymorphous corneal dystrophy 3, TCF8BZP, represses interleukin 2 expression, ZEB, Zfhep, ZFHEP, ZFHX1A, Zfhx1a
Detection method:	Sandwich ELISA, Double Antibody
Application:	This immunoassay kit allows for the in vitro quantitative determination of Human ZEB1 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 ZEB1 and the recovery rates were calculated by comparing the measured value to the expected amount of Human ZEB1 in samples.

Matrix	Recovery range(%)	Average(%)
serum(n=5)	93-105	100
EDTA plasma(n=5)	86-101	94
UFH plasma(n=5)	89-100	95

Linearity:

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Human ZEB1 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)	86-105%	88-95%	87-105%
EDTA plasma(n=5)	84-98%	84-100%	84-99%
UFH plasma(n=5)	80-93%	89-99%	83-95%

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

P37275

UniProt Protein Function:	TCF8: Acts as a transcriptional repressor. Inhibits interleukin-2 (IL-2) gene expression. Enhances or represses the promoter activity of the ATP1A1 gene depending on the quantity of cDNA and on the cell type. Represses E-cadherin promoter and induces an epithelial-mesenchymal transition (EMT) by recruiting SMARCA4/BRG1. Represses BCL6 transcription in the presence of the corepressor CTBP1. Positively regulates neuronal differentiation. Represses RCOR1 transcription activation during neurogenesis. Represses transcription by binding to the E box (5'-CANNTG-3'). Promotes tumorigenicity by repressing stemness-inhibiting microRNAs. Interacts (via N-terminus) with SMARCA4/BRG1. Colocalizes with SMARCA4/BRG1 in E-cadherin- negative cells from established lines, and stroma of normal colon as well as in de-differentiated epithelial cells at the invasion front of colorectal carcinomas. Expressed in heart and skeletal muscle, but not in liver, spleen, or pancreas. Belongs to the delta-EF1/ZFH-1 C2H2-type zinc-finger family.
UniProt Protein Details:	Protein type:C2H2-type zinc finger protein; DNA-binding; Transcription, coactivator/corepressor; Motility/polarity/chemotaxis Chromosomal Location of Human Ortholog: 10p11.2 Cellular Component: nucleoplasm; transcription factor complex; cytoplasm; nucleus Molecular Function:protein binding; zinc ion binding; double-stranded DNA binding; transcription coactivator activity; chromatin binding; transcription factor binding; transcription factor activity; transcription corepressor activity Biological Process: response to nutrient levels; transcription, DNA-dependent; regulation of T cell differentiation in the thymus; semicircular canal morphogenesis; negative regulation of epithelial cell differentiation; negative regulation of transcription from RNA polymerase II promoter; pattern specification process; embryonic skeletal morphogenesis; regulation of transcription from RNA polymerase II promoter; regulation of mesenchymal cell proliferation; cell proliferation; negative regulation of cell proliferation; regulation of transforming growth factor beta receptor signaling pathway; cartilage development; regulation of smooth muscle cell differentiation; forebrain development; positive regulation of transcription from RNA polymerase II promoter; immune response; response to activity; embryonic camera-type eye morphogenesis; negative regulation of transcription, DNA-dependent; positive regulation of neuron differentiation Disease: Corneal Dystrophy, Posterior Polymorphous, 3; Corneal Dystrophy, Fuchs Endothelial, 6
NCBI Summary:	This gene encodes a zinc finger transcription factor. The encoded protein likely plays a role in transcriptional repression of interleukin 2. Mutations in this gene have been associated with posterior polymorphous corneal dystrophy-3 and late-onset Fuchs endothelial corneal dystrophy. Alternatively spliced transcript variants encoding different isoforms have been described.[provided by RefSeq, Mar 2010]
UniProt Code:	P37275
NCBI GenInfo Identifier:	6166575
NCBI Gene ID:	6935
NCBI Accession:	P37275.2
UniProt Secondary Accession:	P37275,Q12924, Q13800, Q2KJ05, Q5T968, Q5VZ84, Q8NB68 B4DJV0, B4DUW9, E9PCM7, F5H4I8,
UniProt Related Accession:	P37275
Molecular Weight:	122,084 Da
NCBI Full Name:	Zinc finger E-box-binding homeobox 1
NCBI Synonym Full Names:	zinc finger E-box binding homeobox 1
NCBI Official Symbol:	ZEB1
NCBI Official Synonym Symbols:	BZP; TCF8; AREB6; FECD6; NIL2A; PPCD3; ZFHEP; ZFHX1A; DELTAEF1
NCBI Protein Information:	zinc finger E-box-binding homeobox 1; negative regulator of IL2; delta-crystallin enhancer binding factor 1; posterior polymorphous corneal dystrophy 3; zinc finger homeodomain enhancer-binding protein; transcription factor 8 (represses interleukin 2 expression)
UniProt Protein Name:	Zinc finger E-box-binding homeobox 1
UniProt Synonym Protein Names:	NIL-2-A zinc finger protein; Negative regulator of IL2; Transcription factor 8; TCF-8
Protein Family:	Zinc finger E-box-binding homeobox
UniProt Gene Name:	ZEB1
UniProt Entry Name:	ZEB1_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.

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Human ZEB1 / Zinc finger E-box-binding homeobox 2 ELISA Kit

Description